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C#","\u002Fcsharp\u002Fadvanced-core\u002Fadditional-features","01.csharp\u002F03.advanced-core\u002F06.additional-features",{"title":121,"icon":122,"path":123,"stem":124,"children":125,"page":59},"Architecture Best Practices","i-lucide-building-2","\u002Fcsharp\u002Farchitecture-best-practices","01.csharp\u002F04.architecture-best-practices",[126,130,149,153,157,161,165,169],{"title":127,"path":128,"stem":129},"Software Design Principles (Частина 1)","\u002Fcsharp\u002Farchitecture-best-practices\u002Fsoftware-design-principles","01.csharp\u002F04.architecture-best-practices\u002F01.software-design-principles",{"title":131,"icon":132,"path":133,"stem":134,"children":135,"page":59},"Design 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Програмування","\u002Fcsharp\u002Fsystem-programming-windows\u002Fasync-fundamentals","01.csharp\u002F07.system-programming-windows\u002F12.async-fundamentals",{"title":344,"path":345,"stem":346},"SynchronizationContext та ConfigureAwait — Контекст Виконання","\u002Fcsharp\u002Fsystem-programming-windows\u002Fasync-context-configureawait","01.csharp\u002F07.system-programming-windows\u002F13.async-context-configureawait",{"title":348,"path":349,"stem":350},"Async — Просунуті Паттерни","\u002Fcsharp\u002Fsystem-programming-windows\u002Fasync-advanced","01.csharp\u002F07.system-programming-windows\u002F14.async-advanced",{"title":352,"path":353,"stem":354},"System.Threading.Channels — Async Producer-Consumer","\u002Fcsharp\u002Fsystem-programming-windows\u002Fchannels","01.csharp\u002F07.system-programming-windows\u002F15.channels",{"title":356,"path":357,"stem":358},"Асинхронна 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ОС","\u002Fcsharp\u002Fsystem-programming-windows\u002Fwindows-hooks-services","01.csharp\u002F07.system-programming-windows\u002F20.windows-hooks-services",{"title":376,"path":377,"stem":378},"Системне Програмування C# (Windows) — 07.system-programming-windows","\u002Fcsharp\u002Fsystem-programming-windows\u002Fimplementation_plan","01.csharp\u002F07.system-programming-windows\u002Fimplementation_plan",{"title":380,"icon":132,"path":381,"stem":382,"children":383,"page":59},"Io","\u002Fcsharp\u002Fio","01.csharp\u002F08.io",[384,388,392,396,400],{"title":385,"path":386,"stem":387},"8.1.1. Основи роботи з файловою системою","\u002Fcsharp\u002Fio\u002Ffile-system-basics","01.csharp\u002F08.io\u002F01.file-system-basics",{"title":389,"path":390,"stem":391},"8.1.2. Потоки (Streams) та Серіалізація Даних","\u002Fcsharp\u002Fio\u002Fstreams-serialization","01.csharp\u002F08.io\u002F02.streams-serialization",{"title":393,"path":394,"stem":395},"8.2.1. JSON Serialization з System.Text.Json","\u002Fcsharp\u002Fio\u002Fjson-serialization","01.csharp\u002F08.io\u002F03.json-serialization",{"title":397,"path":398,"stem":399},"8.2.2. XML Serialization та LINQ to XML","\u002Fcsharp\u002Fio\u002Fxml-serialization","01.csharp\u002F08.io\u002F04.xml-serialization",{"title":401,"path":402,"stem":403},"8.2.3. Binary Serialization: MessagePack та Protocol Buffers","\u002Fcsharp\u002Fio\u002Fbinary-serialization","01.csharp\u002F08.io\u002F05.binary-serialization",{"title":405,"icon":132,"path":406,"stem":407,"children":408,"page":59},"Ado Net","\u002Fcsharp\u002Fado-net","01.csharp\u002F09.ado-net",[409,413,417,421,425,429,433,437,441,445,449,453],{"title":410,"path":411,"stem":412},"9.1. Введення в ADO.NET","\u002Fcsharp\u002Fado-net\u002Fintroduction-to-adonet","01.csharp\u002F09.ado-net\u002F01.introduction-to-adonet",{"title":414,"path":415,"stem":416},"9.2. Клас DbConnection — з'єднання з базою даних","\u002Fcsharp\u002Fado-net\u002Fconnection","01.csharp\u002F09.ado-net\u002F02.connection",{"title":418,"path":419,"stem":420},"9.3. Клас DbCommand — виконання SQL-запитів","\u002Fcsharp\u002Fado-net\u002Fcommand-and-queries","01.csharp\u002F09.ado-net\u002F03.command-and-queries",{"title":422,"path":423,"stem":424},"9.4. Клас DbDataReader — ефективне читання даних","\u002Fcsharp\u002Fado-net\u002Fdatareader","01.csharp\u002F09.ado-net\u002F04.datareader",{"title":426,"path":427,"stem":428},"9.5. Параметризовані запити та захист від SQL Injection","\u002Fcsharp\u002Fado-net\u002Fparameters-and-sql-injection","01.csharp\u002F09.ado-net\u002F05.parameters-and-sql-injection",{"title":430,"path":431,"stem":432},"9.6. Транзакції в ADO.NET","\u002Fcsharp\u002Fado-net\u002Ftransactions","01.csharp\u002F09.ado-net\u002F06.transactions",{"title":434,"path":435,"stem":436},"9.7. DbProviderFactory — провайдер-незалежний код","\u002Fcsharp\u002Fado-net\u002Fprovider-factory","01.csharp\u002F09.ado-net\u002F07.provider-factory",{"title":438,"path":439,"stem":440},"9.8. Асинхронний доступ до даних","\u002Fcsharp\u002Fado-net\u002Fasync-data-access","01.csharp\u002F09.ado-net\u002F08.async-data-access",{"title":442,"path":443,"stem":444},"9.9. Від'єднаний режим: DataSet, DataTable, DataRow","\u002Fcsharp\u002Fado-net\u002Fdisconnected-mode-dataset","01.csharp\u002F09.ado-net\u002F09.disconnected-mode-dataset",{"title":446,"path":447,"stem":448},"9.10. DataAdapter — міст між DataSet та базою даних","\u002Fcsharp\u002Fado-net\u002Fdata-adapter","01.csharp\u002F09.ado-net\u002F10.data-adapter",{"title":450,"path":451,"stem":452},"9.11. Data Mapper та Repository: Архітектура доступу до даних","\u002Fcsharp\u002Fado-net\u002Fdata-mapper-repository","01.csharp\u002F09.ado-net\u002F11.data-mapper-repository",{"title":454,"path":455,"stem":456},"9.12. Identity Map, Unit of Work та Specification Pattern","\u002Fcsharp\u002Fado-net\u002Fadvanced-patterns","01.csharp\u002F09.ado-net\u002F12.advanced-patterns",{"title":458,"icon":255,"path":459,"stem":460,"children":461,"page":59},"Ef Core","\u002Fcsharp\u002Fef-core","01.csharp\u002F10.ef-core",[462,466,470,474,478,482,486,490,494,498,502,506,510,514,518,522,526,532,538,542,546,550,554,558,562,566,570,574,578,582,586,590,594,598,602,606,610,614,618,622,626,630,634,638,642,646],{"title":463,"path":464,"stem":465},"Що таке ORM? Від SQL до об'єктів","\u002Fcsharp\u002Fef-core\u002Fwhat-is-orm","01.csharp\u002F10.ef-core\u002F01.what-is-orm",{"title":467,"path":468,"stem":469},"Перший проєкт — від нуля до CRUD","\u002Fcsharp\u002Fef-core\u002Ffirst-project","01.csharp\u002F10.ef-core\u002F02.first-project",{"title":471,"path":472,"stem":473},"DbContext — Серце EF Core","\u002Fcsharp\u002Fef-core\u002Fdbcontext-deep-dive","01.csharp\u002F10.ef-core\u002F03.dbcontext-deep-dive",{"title":475,"path":476,"stem":477},"Провайдери баз даних — Архітектура та Вибір СУБД","\u002Fcsharp\u002Fef-core\u002Fdatabase-providers","01.csharp\u002F10.ef-core\u002F04.database-providers",{"title":479,"path":480,"stem":481},"Конвенції EF Core — Магія без конфігурації","\u002Fcsharp\u002Fef-core\u002Fconventions","01.csharp\u002F10.ef-core\u002F05.conventions",{"title":483,"path":484,"stem":485},"Fluent API та Data Annotations — Явна конфігурація моделі","\u002Fcsharp\u002Fef-core\u002Ffluent-api-vs-annotations","01.csharp\u002F10.ef-core\u002F06.fluent-api-vs-annotations",{"title":487,"path":488,"stem":489},"Зв'язки — One-to-One та One-to-Many","\u002Fcsharp\u002Fef-core\u002Frelationships-basics","01.csharp\u002F10.ef-core\u002F07.relationships-basics",{"title":491,"path":492,"stem":493},"Зв'язки Advanced — Many-to-Many та Складні Сценарії","\u002Fcsharp\u002Fef-core\u002Frelationships-advanced","01.csharp\u002F10.ef-core\u002F08.relationships-advanced",{"title":495,"path":496,"stem":497},"Властивості — Типи, Конвертери, Компаратори (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fproperty-configuration-part1","01.csharp\u002F10.ef-core\u002F09.property-configuration-part1",{"title":499,"path":500,"stem":501},"Властивості — Value Comparers, Generators, Shadow Properties (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fproperty-configuration-part2","01.csharp\u002F10.ef-core\u002F09.property-configuration-part2",{"title":503,"path":504,"stem":505},"Складні типи — Owned Types та Complex Types (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fcomplex-types-owned-part1","01.csharp\u002F10.ef-core\u002F10.complex-types-owned-part1",{"title":507,"path":508,"stem":509},"Складні типи — Complex Types, Keyless Entities, Порівняння (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fcomplex-types-owned-part2","01.csharp\u002F10.ef-core\u002F10.complex-types-owned-part2",{"title":511,"path":512,"stem":513},"JSON Columns — Складні дані у JSON (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fjson-columns-part1","01.csharp\u002F10.ef-core\u002F11.json-columns-part1",{"title":515,"path":516,"stem":517},"JSON Columns — Value Comparers, Індекси, Провайдери (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fjson-columns-part2","01.csharp\u002F10.ef-core\u002F11.json-columns-part2",{"title":519,"path":520,"stem":521},"Успадкування — Абстрактні класи та TPH (Частина 1)","\u002Fcsharp\u002Fef-core\u002Finheritance-part1","01.csharp\u002F10.ef-core\u002F12.inheritance-part1",{"title":523,"path":524,"stem":525},"Успадкування — TPT, TPC та Порівняння Стратегій (Частина 2)","\u002Fcsharp\u002Fef-core\u002Finheritance-part2","01.csharp\u002F10.ef-core\u002F12.inheritance-part2",{"title":527,"path":528,"stem":529,"children":530},"Індекси, Обмеження та Схема (Частина 1)","\u002Fcsharp\u002Fef-core\u002Findexes-constraints-part1","01.csharp\u002F10.ef-core\u002F13.indexes-constraints-part1",[531],{"title":527,"path":528,"stem":529},{"title":533,"path":534,"stem":535,"children":536},"Індекси, Обмеження та Схема (Частина 2)","\u002Fcsharp\u002Fef-core\u002Findexes-constraints-part2","01.csharp\u002F10.ef-core\u002F13.indexes-constraints-part2",[537],{"title":533,"path":534,"stem":535},{"title":539,"path":540,"stem":541},"Seed Data — Початкові Дані (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fseeding-part1","01.csharp\u002F10.ef-core\u002F14.seeding-part1",{"title":543,"path":544,"stem":545},"Seed Data — SQL-скрипти, Bogus та Стратегії (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fseeding-part2","01.csharp\u002F10.ef-core\u002F14.seeding-part2",{"title":547,"path":548,"stem":549},"Global Query Filters — Глобальні Фільтри (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fglobal-query-filters-part1","01.csharp\u002F10.ef-core\u002F15.global-query-filters-part1",{"title":551,"path":552,"stem":553},"Global Query Filters — Підводні камені та Інтеграція (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fglobal-query-filters-part2","01.csharp\u002F10.ef-core\u002F15.global-query-filters-part2",{"title":555,"path":556,"stem":557},"LINQ-запити в EF Core (Частина 1)","\u002Fcsharp\u002Fef-core\u002Flinq-queries-part1","01.csharp\u002F10.ef-core\u002F16.linq-queries-part1",{"title":559,"path":560,"stem":561},"LINQ-запити в EF Core (Частина 2)","\u002Fcsharp\u002Fef-core\u002Flinq-queries-part2","01.csharp\u002F10.ef-core\u002F16.linq-queries-part2",{"title":563,"path":564,"stem":565},"Завантаження Пов'язаних Даних (Частина 1)","\u002Fcsharp\u002Fef-core\u002Floading-related-data-part1","01.csharp\u002F10.ef-core\u002F17.loading-related-data-part1",{"title":567,"path":568,"stem":569},"Завантаження Пов'язаних Даних (Частина 2)","\u002Fcsharp\u002Fef-core\u002Floading-related-data-part2","01.csharp\u002F10.ef-core\u002F17.loading-related-data-part2",{"title":571,"path":572,"stem":573},"Raw SQL, Views та Stored Procedures (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fraw-sql-part1","01.csharp\u002F10.ef-core\u002F18.raw-sql-part1",{"title":575,"path":576,"stem":577},"Raw SQL — Stored Procedures, DbFunction та Bulk Operations (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fraw-sql-part2","01.csharp\u002F10.ef-core\u002F18.raw-sql-part2",{"title":579,"path":580,"stem":581},"Продвинуті Запити — Compiled Queries, Bulk та Оптимізація (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fadvanced-queries-part1","01.csharp\u002F10.ef-core\u002F19.advanced-queries-part1",{"title":583,"path":584,"stem":585},"Продвинуті Запити — Query Tags, Bulk та Interceptors (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fadvanced-queries-part2","01.csharp\u002F10.ef-core\u002F19.advanced-queries-part2",{"title":587,"path":588,"stem":589},"Change Tracker — Відстеження Змін (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fchange-tracking-part1","01.csharp\u002F10.ef-core\u002F20.change-tracking-part1",{"title":591,"path":592,"stem":593},"Change Tracker — Графи Об'єктів та Disconnected (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fchange-tracking-part2","01.csharp\u002F10.ef-core\u002F20.change-tracking-part2",{"title":595,"path":596,"stem":597},"Збереження Даних та Транзакції (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fsaving-data-part1","01.csharp\u002F10.ef-core\u002F21.saving-data-part1",{"title":599,"path":600,"stem":601},"Збереження Даних — Concurrency та Outbox (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fsaving-data-part2","01.csharp\u002F10.ef-core\u002F21.saving-data-part2",{"title":603,"path":604,"stem":605},"Конкурентність та Блокування (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fconcurrency-part1","01.csharp\u002F10.ef-core\u002F22.concurrency-part1",{"title":607,"path":608,"stem":609},"Конкурентність — Дедлоки та Queue Processing (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fconcurrency-part2","01.csharp\u002F10.ef-core\u002F22.concurrency-part2",{"title":611,"path":612,"stem":613},"Міграції в EF Core — Основи (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fmigrations-basics-part1","01.csharp\u002F10.ef-core\u002F23.migrations-basics-part1",{"title":615,"path":616,"stem":617},"Міграції в EF Core — Основи (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fmigrations-basics-part2","01.csharp\u002F10.ef-core\u002F23.migrations-basics-part2",{"title":619,"path":620,"stem":621},"Міграції — Просунуті Сценарії (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fmigrations-advanced-part1","01.csharp\u002F10.ef-core\u002F24.migrations-advanced-part1",{"title":623,"path":624,"stem":625},"Міграції — Просунуті Сценарії (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fmigrations-advanced-part2","01.csharp\u002F10.ef-core\u002F24.migrations-advanced-part2",{"title":627,"path":628,"stem":629},"Управління Схемою та Database-First (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fschema-management-part1","01.csharp\u002F10.ef-core\u002F25.schema-management-part1",{"title":631,"path":632,"stem":633},"Управління Схемою та Database-First (Частина 2)","\u002Fcsharp\u002Fef-core\u002Fschema-management-part2","01.csharp\u002F10.ef-core\u002F25.schema-management-part2",{"title":635,"path":636,"stem":637},"Продуктивність EF Core — Основи (Частина 1)","\u002Fcsharp\u002Fef-core\u002Fperformance-fundamentals-part1","01.csharp\u002F10.ef-core\u002F26.performance-fundamentals-part1",{"title":639,"path":640,"stem":641},"Interceptors в EF Core (Частина 1)","\u002Fcsharp\u002Fef-core\u002Finterceptors-part1","01.csharp\u002F10.ef-core\u002F29.interceptors-part1",{"title":643,"path":644,"stem":645},"Interceptors в EF Core — Connection, Transaction та Materialization (Частина 2)","\u002Fcsharp\u002Fef-core\u002Finterceptors-part2","01.csharp\u002F10.ef-core\u002F29.interceptors-part2",{"title":647,"path":648,"stem":649},"План вивчення Entity Framework Core — Повний курс","\u002Fcsharp\u002Fef-core\u002Fimplementation_plan","01.csharp\u002F10.ef-core\u002Fimplementation_plan",{"title":651,"icon":652,"path":653,"stem":654,"children":655,"page":59},"ASP.NET","i-devicon-dotnetcore","\u002Fcsharp\u002Faspnet","01.csharp\u002F11.aspnet",[656,730,791,869,927,941,967,1057,1111,1182,1212,1289,1346],{"title":657,"icon":658,"path":659,"stem":660,"children":661,"page":59},"Minimal API","i-lucide-network","\u002Fcsharp\u002Faspnet\u002Fminimal-api","01.csharp\u002F11.aspnet\u002F01.minimal-api",[662,666,670,674,678,682,686,690,694,698,702,706,710,714,718,722,726],{"title":663,"path":664,"stem":665},"Вступ до ASP.NET та еволюція фреймворку","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fintroduction","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F01.introduction",{"title":667,"path":668,"stem":669},"Перший додаток на ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Ffirst-application","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F02.first-application",{"title":671,"path":672,"stem":673},"WebApplication, Builder та Dependency Injection","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fwebapplication-builder","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F03.webapplication-builder",{"title":675,"path":676,"stem":677},"Конвеєр запитів та Middleware","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Frequest-pipeline-middleware","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F04.request-pipeline-middleware",{"title":679,"path":680,"stem":681},"Маршрутизація в ASP.NET Core: Основи","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Frouting-basics","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F05.routing-basics",{"title":683,"path":684,"stem":685},"Маршрутизація в ASP.NET Core: Розширені можливості","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Frouting-advanced","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F06.routing-advanced",{"title":687,"path":688,"stem":689},"Статичні файли в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fstatic-files","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F07.static-files",{"title":691,"path":692,"stem":693},"Статичні Активи: MapStaticAssets (ASP.NET Core 9.0)","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fstatic-assets","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F08.static-assets",{"title":695,"path":696,"stem":697},"Конфігурація в ASP.NET Core: Основи","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fconfiguration-fundamentals","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F09.configuration-fundamentals",{"title":699,"path":700,"stem":701},"Конфігурація: Паттерн Options","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fconfiguration-options","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F10.configuration-options",{"title":703,"path":704,"stem":705},"Логування в ASP.NET Core: Основи","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Flogging-basics","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F11.logging-basics",{"title":707,"path":708,"stem":709},"Логування: Serilog та Middleware","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Flogging-advanced","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F12.logging-advanced",{"title":711,"path":712,"stem":713},"Управління станом: HttpContext.Items та Cookies","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fstate-management","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F13.state-management",{"title":715,"path":716,"stem":717},"Стан сесії: Sessions","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fsession-state","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F14.session-state",{"title":719,"path":720,"stem":721},"Структура проєкту: від хаосу до архітектури","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fproject-structure","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F15.project-structure",{"title":723,"path":724,"stem":725},"Scalar у Minimal API: повний проєкт і Fluent OpenAPI","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fscalar-openapi-fluent","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F16.scalar-openapi-fluent",{"title":727,"path":728,"stem":729},"Swagger \u002F Swashbuckle у Minimal API: окремий класичний шлях","\u002Fcsharp\u002Faspnet\u002Fminimal-api\u002Fswagger-swashbuckle","01.csharp\u002F11.aspnet\u002F01.minimal-api\u002F17.swagger-swashbuckle",{"title":731,"icon":658,"path":732,"stem":733,"children":734,"page":59},"API","\u002Fcsharp\u002Faspnet\u002Fapi","01.csharp\u002F11.aspnet\u002F02.api",[735,739,743,747,751,755,759,763,767,771,775,779,783,787],{"title":736,"path":737,"stem":738},"Що таке API. Клієнт-серверна архітектура","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fwhat-is-api","01.csharp\u002F11.aspnet\u002F02.api\u002F01.what-is-api",{"title":740,"path":741,"stem":742},"Формати даних: JSON, XML, TOML та бінарні формати","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fdata-formats","01.csharp\u002F11.aspnet\u002F02.api\u002F02.data-formats",{"title":744,"path":745,"stem":746},"Парадигми API та концепція REST","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fapi-paradigms-rest","01.csharp\u002F11.aspnet\u002F02.api\u002F03.api-paradigms-rest",{"title":748,"path":749,"stem":750},"HTTP-методи, статус-коди та заголовки","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fhttp-methods-status-codes","01.csharp\u002F11.aspnet\u002F02.api\u002F04.http-methods-status-codes",{"title":752,"path":753,"stem":754},"Організація HTTP API за принципами REST","\u002Fcsharp\u002Faspnet\u002Fapi\u002Frest-organizing","01.csharp\u002F11.aspnet\u002F02.api\u002F05.rest-organizing",{"title":756,"path":757,"stem":758},"Номенклатура URL та CRUD-операції","\u002Fcsharp\u002Faspnet\u002Fapi\u002Furl-nomenclature-crud","01.csharp\u002F11.aspnet\u002F02.api\u002F06.url-nomenclature-crud",{"title":760,"path":761,"stem":762},"Правила дизайну: іменування та стандарти","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fapi-design-naming","01.csharp\u002F11.aspnet\u002F02.api\u002F07.api-design-naming",{"title":764,"path":765,"stem":766},"Валідація, ліміти та обробка помилок","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fapi-design-validation","01.csharp\u002F11.aspnet\u002F02.api\u002F08.api-design-validation",{"title":768,"path":769,"stem":770},"Обробка помилок у Minimal API","\u002Fcsharp\u002Faspnet\u002Fapi\u002Ferror-handling-http","01.csharp\u002F11.aspnet\u002F02.api\u002F09.error-handling-http",{"title":772,"path":773,"stem":774},"Ідемпотентність та синхронізація стану","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fidempotency-sync","01.csharp\u002F11.aspnet\u002F02.api\u002F10.idempotency-sync",{"title":776,"path":777,"stem":778},"Пагінація та організація списків","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fpagination-lists","01.csharp\u002F11.aspnet\u002F02.api\u002F11.pagination-lists",{"title":780,"path":781,"stem":782},"Безпека API, кешування та інтернаціоналізація","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fsecurity-auth","01.csharp\u002F11.aspnet\u002F02.api\u002F12.security-auth",{"title":784,"path":785,"stem":786},"Процес проєктування API та документування","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fapi-design-process","01.csharp\u002F11.aspnet\u002F02.api\u002F13.api-design-process",{"title":788,"path":789,"stem":790},"OpenAPI: контракт, специфікація та документація API","\u002Fcsharp\u002Faspnet\u002Fapi\u002Fopenapi","01.csharp\u002F11.aspnet\u002F02.api\u002F14.openapi",{"title":792,"icon":793,"path":794,"stem":795,"children":796,"page":59},"Auth","i-lucide-shield-check","\u002Fcsharp\u002Faspnet\u002Fauth","01.csharp\u002F11.aspnet\u002F03.auth",[797,801,805,809,813,817,821,825,829,833,837,841,845,849,853,857,861,865],{"title":798,"path":799,"stem":800},"Основи аутентифікації та авторизації","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fauth-fundamentals","01.csharp\u002F11.aspnet\u002F03.auth\u002F01.auth-fundamentals",{"title":802,"path":803,"stem":804},"JWT-аутентифікація","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fjwt-authentication","01.csharp\u002F11.aspnet\u002F03.auth\u002F02.jwt-authentication",{"title":806,"path":807,"stem":808},"Авторизація: ролі, політики та resource-based доступ","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fauthorization-policies","01.csharp\u002F11.aspnet\u002F03.auth\u002F03.authorization-policies",{"title":810,"path":811,"stem":812},"Cookie-аутентифікація та ASP.NET Core Identity","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fcookie-auth-identity","01.csharp\u002F11.aspnet\u002F03.auth\u002F04.cookie-auth-identity",{"title":814,"path":815,"stem":816},"JWT + Refresh Tokens (HttpOnly Cookie)","\u002Fcsharp\u002Faspnet\u002Fauth\u002F04b.identity-auth-jwt","01.csharp\u002F11.aspnet\u002F03.auth\u002F04b.identity-auth-jwt",{"title":818,"path":819,"stem":820},"Identity: Підтвердження Email та Скидання Пароля","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fidentity-email-confirmation","01.csharp\u002F11.aspnet\u002F03.auth\u002F05.identity-email-confirmation",{"title":822,"path":823,"stem":824},"Identity: Двофакторна Аутентифікація (2FA)","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fidentity-two-factor","01.csharp\u002F11.aspnet\u002F03.auth\u002F06.identity-two-factor",{"title":826,"path":827,"stem":828},"Identity: Внутрішня Архітектура та Кастомізація","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fidentity-internals","01.csharp\u002F11.aspnet\u002F03.auth\u002F07.identity-internals",{"title":830,"path":831,"stem":832},"OAuth 2.0 та зовнішні провайдери","\u002Fcsharp\u002Faspnet\u002Fauth\u002Foauth-external-providers","01.csharp\u002F11.aspnet\u002F03.auth\u002F08.oauth-external-providers",{"title":834,"path":835,"stem":836},"Безпека на практиці: CORS, HTTPS та захист від атак","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fsecurity-hardening","01.csharp\u002F11.aspnet\u002F03.auth\u002F09.security-hardening",{"title":838,"path":839,"stem":840},"Теорія OAuth 2.0: Поняття, Аналогії та Флоу","\u002Fcsharp\u002Faspnet\u002Fauth\u002Foauth-theory","01.csharp\u002F11.aspnet\u002F03.auth\u002F10.oauth-theory",{"title":842,"path":843,"stem":844},"OIDC, OAuth 2.0 та Keycloak в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Foidc-keycloak","01.csharp\u002F11.aspnet\u002F03.auth\u002F10.oidc-keycloak",{"title":846,"path":847,"stem":848},"API Keys аутентифікація в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fapi-keys","01.csharp\u002F11.aspnet\u002F03.auth\u002F11.api-keys",{"title":850,"path":851,"stem":852},"Rate Limiting та Throttling в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Frate-limiting","01.csharp\u002F11.aspnet\u002F03.auth\u002F12.rate-limiting",{"title":854,"path":855,"stem":856},"Refresh Token Rotation в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Frefresh-token-rotation","01.csharp\u002F11.aspnet\u002F03.auth\u002F13.refresh-token-rotation",{"title":858,"path":859,"stem":860},"Certificate Authentication та mTLS в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fcertificate-auth","01.csharp\u002F11.aspnet\u002F03.auth\u002F14.certificate-auth",{"title":862,"path":863,"stem":864},"RBAC, ABAC та ReBAC в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Frbac-abac-rebac","01.csharp\u002F11.aspnet\u002F03.auth\u002F15.rbac-abac-rebac",{"title":866,"path":867,"stem":868},"Multi-tenancy та ізоляція даних в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fauth\u002Fmulti-tenancy","01.csharp\u002F11.aspnet\u002F03.auth\u002F16.multi-tenancy",{"title":870,"icon":871,"path":872,"stem":873,"children":874,"page":59},"Нотифікації","i-lucide-bell","\u002Fcsharp\u002Faspnet\u002Fnotifications","01.csharp\u002F11.aspnet\u002F04.notifications",[875,879,883,887,891,895,899,903,907,911,915,919,923],{"title":876,"path":877,"stem":878},"In-App нотифікації через базу даних","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fin-app-database-notifications","01.csharp\u002F11.aspnet\u002F04.notifications\u002F01.in-app-database-notifications",{"title":880,"path":881,"stem":882},"Polling: Регулярний запит оновлень","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fpolling","01.csharp\u002F11.aspnet\u002F04.notifications\u002F02.polling",{"title":884,"path":885,"stem":886},"Server-Sent Events: Однострімовий push від сервера","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fserver-sent-events","01.csharp\u002F11.aspnet\u002F04.notifications\u002F03.server-sent-events",{"title":888,"path":889,"stem":890},"WebSockets: Двостороннє з'єднання в реальному часі","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fwebsockets","01.csharp\u002F11.aspnet\u002F04.notifications\u002F04.websockets",{"title":892,"path":893,"stem":894},"SignalR: Абстракція над транспортами реального часу","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fsignalr","01.csharp\u002F11.aspnet\u002F04.notifications\u002F05.signalr",{"title":896,"path":897,"stem":898},"Background Services: Фонові задачі в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fbackground-services","01.csharp\u002F11.aspnet\u002F04.notifications\u002F06.background-services",{"title":900,"path":901,"stem":902},"Web Push нотифікації","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fweb-push","01.csharp\u002F11.aspnet\u002F04.notifications\u002F07.web-push",{"title":904,"path":905,"stem":906},"Email нотифікації","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Femail-notifications","01.csharp\u002F11.aspnet\u002F04.notifications\u002F08.email-notifications",{"title":908,"path":909,"stem":910},"Порівняння підходів: Як вибрати правильну технологію нотифікацій","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fchoosing-the-right-approach","01.csharp\u002F11.aspnet\u002F04.notifications\u002F09.choosing-the-right-approach",{"title":912,"path":913,"stem":914},"Hangfire: Надійне планування фонових задач","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fhangfire","01.csharp\u002F11.aspnet\u002F04.notifications\u002F10.hangfire",{"title":916,"path":917,"stem":918},"Практика: Конвертація зображень у WebP через Hangfire","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fhangfire-image-webp","01.csharp\u002F11.aspnet\u002F04.notifications\u002F11.hangfire-image-webp",{"title":920,"path":921,"stem":922},"Практика: Підготовка відео до HLS-стрімінгу через Hangfire","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Fhangfire-video-hls","01.csharp\u002F11.aspnet\u002F04.notifications\u002F12.hangfire-video-hls",{"title":924,"path":925,"stem":926},"Telegram-нотифікації: від одного повідомлення до масових розсилок і мульти-канального підходу","\u002Fcsharp\u002Faspnet\u002Fnotifications\u002Ftelegram-notifications","01.csharp\u002F11.aspnet\u002F04.notifications\u002F13.telegram-notifications",{"title":928,"icon":929,"path":930,"stem":931,"children":932,"page":59},"Інтернаціоналізація","i-lucide-languages","\u002Fcsharp\u002Faspnet\u002Fi18n","01.csharp\u002F11.aspnet\u002F05.i18n",[933,937],{"title":934,"path":935,"stem":936},"Інтернаціоналізація (i18n) у Minimal API: від A до Я","\u002Fcsharp\u002Faspnet\u002Fi18n\u002Finternationalization","01.csharp\u002F11.aspnet\u002F05.i18n\u002F01.internationalization",{"title":938,"path":939,"stem":940},"Humanizer: людиномовні рядки у .NET","\u002Fcsharp\u002Faspnet\u002Fi18n\u002Fhumanizer","01.csharp\u002F11.aspnet\u002F05.i18n\u002F02.humanizer",{"title":942,"icon":943,"path":944,"stem":945,"children":946,"page":59},"Кешування","i-lucide-layers","\u002Fcsharp\u002Faspnet\u002Fcaching","01.csharp\u002F11.aspnet\u002F06.caching",[947,951,955,959,963],{"title":948,"path":949,"stem":950},"Огляд кешування: чотири рівні і коли що обирати","\u002Fcsharp\u002Faspnet\u002Fcaching\u002Fcaching","01.csharp\u002F11.aspnet\u002F06.caching\u002F01.caching",{"title":952,"path":953,"stem":954},"IMemoryCache: кеш в оперативній пам'яті","\u002Fcsharp\u002Faspnet\u002Fcaching\u002Fmemory-cache","01.csharp\u002F11.aspnet\u002F06.caching\u002F02.memory-cache",{"title":956,"path":957,"stem":958},"IDistributedCache і Redis: розподілений кеш","\u002Fcsharp\u002Faspnet\u002Fcaching\u002Fdistributed-cache","01.csharp\u002F11.aspnet\u002F06.caching\u002F03.distributed-cache",{"title":960,"path":961,"stem":962},"Response Cache: HTTP-кешування через Cache-Control","\u002Fcsharp\u002Faspnet\u002Fcaching\u002Fresponse-cache","01.csharp\u002F11.aspnet\u002F06.caching\u002F04.response-cache",{"title":964,"path":965,"stem":966},"Output Cache: серверний кеш HTTP-відповідей (.NET 7+)","\u002Fcsharp\u002Faspnet\u002Fcaching\u002Foutput-cache","01.csharp\u002F11.aspnet\u002F06.caching\u002F05.output-cache",{"title":968,"icon":969,"path":970,"stem":971,"children":972,"page":59},"Тестування","i-lucide-test-tube","\u002Fcsharp\u002Faspnet\u002Ftesting","01.csharp\u002F11.aspnet\u002F07.testing",[973,977,981,985,989,993,997,1001,1005,1009,1013,1017,1021,1025,1029,1033,1037,1041,1045,1049,1053],{"title":974,"path":975,"stem":976},"Що таке тестування? Від інтуїції до науки","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fwhat-is-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F01.what-is-testing",{"title":978,"path":979,"stem":980},"Піраміда тестування — Стратегія, а не Догма","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Ftesting-pyramid","01.csharp\u002F11.aspnet\u002F07.testing\u002F02.testing-pyramid",{"title":982,"path":983,"stem":984},"Дві Школи Тестування — Лондон проти Детройту","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Ftesting-schools","01.csharp\u002F11.aspnet\u002F07.testing\u002F03.testing-schools",{"title":986,"path":987,"stem":988},"TDD та BDD — Тести як Дизайн-інструмент","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Ftdd-and-bdd","01.csharp\u002F11.aspnet\u002F07.testing\u002F04.tdd-and-bdd",{"title":990,"path":991,"stem":992},"Що саме тестувати — Техніки аналізу та Циклomatична складність","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fwhat-to-test","01.csharp\u002F11.aspnet\u002F07.testing\u002F05.what-to-test",{"title":994,"path":995,"stem":996},"Тестові Фреймворки — Навіщо вони і що всередині","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Ftest-frameworks","01.csharp\u002F11.aspnet\u002F07.testing\u002F06.test-frameworks",{"title":998,"path":999,"stem":1000},"xUnit — Факти, Теорії та Lifecycle тестів","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fxunit-basics","01.csharp\u002F11.aspnet\u002F07.testing\u002F07.xunit-basics",{"title":1002,"path":1003,"stem":1004},"xUnit Advanced — Fixtures, Кастомізація та Розширення","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fxunit-advanced","01.csharp\u002F11.aspnet\u002F07.testing\u002F08.xunit-advanced",{"title":1006,"path":1007,"stem":1008},"Moq — Глибоке занурення в мокування","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fmocking-with-moq","01.csharp\u002F11.aspnet\u002F07.testing\u002F09.mocking-with-moq",{"title":1010,"path":1011,"stem":1012},"Тестування Баз Даних — EF Core, SQLite та Testcontainers","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fdatabase-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F10.database-testing",{"title":1014,"path":1015,"stem":1016},"Integration Testing — Частина 1 [Теорія та WebApplicationFactory]","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fintegration-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F11.integration-testing",{"title":1018,"path":1019,"stem":1020},"Інтеграційне тестування — Практика","\u002Fcsharp\u002Faspnet\u002Ftesting\u002F11a.integration-testing-practice","01.csharp\u002F11.aspnet\u002F07.testing\u002F11a.integration-testing-practice",{"title":1022,"path":1023,"stem":1024},"Integration Testing — Частина 2 [Просунуті Сценарії та Testcontainers]","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fintegration-testing-advanced","01.csharp\u002F11.aspnet\u002F07.testing\u002F12.integration-testing-advanced",{"title":1026,"path":1027,"stem":1028},"Професійний Postman: Колекції, Змінні та GitHub Інтеграція","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fpostman-professional","01.csharp\u002F11.aspnet\u002F07.testing\u002F13.postman-professional",{"title":1030,"path":1031,"stem":1032},"HttpClient у Тестах Частина 1: Архітектура та MockHttpMessageHandler","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fhttpclient-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F14.httpclient-testing",{"title":1034,"path":1035,"stem":1036},"HttpClient у Тестах Частина 2: WireMock.Net та Resilience","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fwiremock-net","01.csharp\u002F11.aspnet\u002F07.testing\u002F15.wiremock-net",{"title":1038,"path":1039,"stem":1040},"Патерни та Анти-патерни Тестування: Test Smells","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Ftesting-patterns","01.csharp\u002F11.aspnet\u002F07.testing\u002F16.testing-patterns",{"title":1042,"path":1043,"stem":1044},"Просунуті інструменти: Time, Snapshots та Властивості","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fadvanced-testing-tools","01.csharp\u002F11.aspnet\u002F07.testing\u002F17.advanced-testing-tools",{"title":1046,"path":1047,"stem":1048},"Тестування Архітектури з NetArchTest","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Farchitecture-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F18.architecture-testing",{"title":1050,"path":1051,"stem":1052},"Тестування Продуктивності: BenchmarkDotNet, NBomber та k6","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fperformance-testing","01.csharp\u002F11.aspnet\u002F07.testing\u002F19.performance-testing",{"title":1054,"path":1055,"stem":1056},"Залишок плану для курсу \"Тестування ASP.NET Minimal API\"","\u002Fcsharp\u002Faspnet\u002Ftesting\u002Fremaining_plan","01.csharp\u002F11.aspnet\u002F07.testing\u002Fremaining_plan",{"title":1058,"icon":1059,"path":1060,"stem":1061,"children":1062,"page":59},"Платежі","i-lucide-credit-card","\u002Fcsharp\u002Faspnet\u002Fpayments","01.csharp\u002F11.aspnet\u002F08.payments",[1063,1067,1071,1075,1079,1083,1087,1091,1095,1099,1103,1107],{"title":1064,"path":1065,"stem":1066},"Основи платіжної інфраструктури","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fpayment-fundamentals","01.csharp\u002F11.aspnet\u002F08.payments\u002F01.payment-fundamentals",{"title":1068,"path":1069,"stem":1070},"Методи оплати в Україні","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fpayment-methods-ukraine","01.csharp\u002F11.aspnet\u002F08.payments\u002F02.payment-methods-ukraine",{"title":1072,"path":1073,"stem":1074},"PCI DSS та безпека платежів","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fpci-dss-security","01.csharp\u002F11.aspnet\u002F08.payments\u002F03.pci-dss-security",{"title":1076,"path":1077,"stem":1078},"Архітектура платіжної підсистеми","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fpayment-architecture","01.csharp\u002F11.aspnet\u002F08.payments\u002F04.payment-architecture",{"title":1080,"path":1081,"stem":1082},"Інтеграція LiqPay (ПриватБанк)","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fliqpay-integration","01.csharp\u002F11.aspnet\u002F08.payments\u002F05.liqpay-integration",{"title":1084,"path":1085,"stem":1086},"Інтеграція Monobank Acquiring API","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fmonobank-acquiring","01.csharp\u002F11.aspnet\u002F08.payments\u002F06.monobank-acquiring",{"title":1088,"path":1089,"stem":1090},"Інтеграція Stripe","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fstripe-integration","01.csharp\u002F11.aspnet\u002F08.payments\u002F07.stripe-integration",{"title":1092,"path":1093,"stem":1094},"Webhooks — глибоке занурення","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fwebhooks-deep-dive","01.csharp\u002F11.aspnet\u002F08.payments\u002F08.webhooks-deep-dive",{"title":1096,"path":1097,"stem":1098},"Підписки та рекурентні платежі","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fsubscriptions-recurring","01.csharp\u002F11.aspnet\u002F08.payments\u002F09.subscriptions-recurring",{"title":1100,"path":1101,"stem":1102},"Повернення коштів та диспути","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Frefunds-disputes","01.csharp\u002F11.aspnet\u002F08.payments\u002F10.refunds-disputes",{"title":1104,"path":1105,"stem":1106},"Тестування платіжних інтеграцій","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Ftesting-payments","01.csharp\u002F11.aspnet\u002F08.payments\u002F11.testing-payments",{"title":1108,"path":1109,"stem":1110},"Чекліст виходу в Production","\u002Fcsharp\u002Faspnet\u002Fpayments\u002Fproduction-checklist","01.csharp\u002F11.aspnet\u002F08.payments\u002F12.production-checklist",{"title":1112,"icon":1113,"items":1114,"path":1127,"stem":1128,"children":1129,"page":59},"Популярні бібліотеки","lucide:box",[1115,1116,1117,1118,1119,1120,1121,1122,1123,1124,1125,1126],"01.fluent-validation","02.mapster","03.erroror-result-pattern","04.serilog","05.mediatr","06.polly","07.health-checks","08.feature-management","09.fluent-email","10.quest-pdf","11.bogus","12.humanizer-guard","\u002Fcsharp\u002Faspnet\u002Flibraries","01.csharp\u002F11.aspnet\u002F09.libraries",[1130,1134,1138,1142,1146,1150,1154,1158,1162,1166,1170,1174,1178],{"title":1131,"path":1132,"stem":1133},"Валідація з FluentValidation в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Ffluent-validation","01.csharp\u002F11.aspnet\u002F09.libraries\u002F01.fluent-validation",{"title":1135,"path":1136,"stem":1137},"Маппінг об","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fmapster","01.csharp\u002F11.aspnet\u002F09.libraries\u002F02.mapster",{"title":1139,"path":1140,"stem":1141},"Обробка помилок з ErrorOr та Result Pattern в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Ferroror-result-pattern","01.csharp\u002F11.aspnet\u002F09.libraries\u002F03.erroror-result-pattern",{"title":1143,"path":1144,"stem":1145},"Структуроване логування з Serilog в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fserilog","01.csharp\u002F11.aspnet\u002F09.libraries\u002F04.serilog",{"title":1147,"path":1148,"stem":1149},"CQRS та Mediator з MediatR в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fmediatr","01.csharp\u002F11.aspnet\u002F09.libraries\u002F05.mediatr",{"title":1151,"path":1152,"stem":1153},"Відмовостійкість з Polly в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fpolly","01.csharp\u002F11.aspnet\u002F09.libraries\u002F06.polly",{"title":1155,"path":1156,"stem":1157},"Health Checks в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fhealth-checks","01.csharp\u002F11.aspnet\u002F09.libraries\u002F07.health-checks",{"title":1159,"path":1160,"stem":1161},"Feature Management та Feature Flags в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Ffeature-management","01.csharp\u002F11.aspnet\u002F09.libraries\u002F08.feature-management",{"title":1163,"path":1164,"stem":1165},"Відправка Email з FluentEmail в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Ffluent-email","01.csharp\u002F11.aspnet\u002F09.libraries\u002F09.fluent-email",{"title":1167,"path":1168,"stem":1169},"Генерація PDF з QuestPDF в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fquest-pdf","01.csharp\u002F11.aspnet\u002F09.libraries\u002F10.quest-pdf",{"title":1171,"path":1172,"stem":1173},"Генерація тестових даних з Bogus в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fbogus","01.csharp\u002F11.aspnet\u002F09.libraries\u002F11.bogus",{"title":1175,"path":1176,"stem":1177},"Humanizer та Guard Clauses в ASP.NET Core","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fhumanizer-guard","01.csharp\u002F11.aspnet\u002F09.libraries\u002F12.humanizer-guard",{"title":1179,"path":1180,"stem":1181},"План модуля 10.libraries — Популярні бібліотеки ASP.NET","\u002Fcsharp\u002Faspnet\u002Flibraries\u002Fplan","01.csharp\u002F11.aspnet\u002F09.libraries\u002Fplan",{"title":1183,"icon":1184,"path":1185,"stem":1186,"children":1187,"page":59},"Razor Pages","i-lucide-layout-template","\u002Fcsharp\u002Faspnet\u002Frazor-pages","01.csharp\u002F11.aspnet\u002F10.razor-pages",[1188,1192,1196,1200,1204,1208],{"title":1189,"path":1190,"stem":1191},"Від Minimal API до Razor Pages: концептуальний перехід","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Ffrom-minimal-api","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F01.from-minimal-api",{"title":1193,"path":1194,"stem":1195},"PageModel: логіка сторінки Razor Pages","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Fpage-model","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F02.page-model",{"title":1197,"path":1198,"stem":1199},"Razor синтаксис: шаблонізатор у .cshtml","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Frazor-syntax","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F03.razor-syntax",{"title":1201,"path":1202,"stem":1203},"Tag Helpers: типізований HTML","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Ftag-helpers","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F04.tag-helpers",{"title":1205,"path":1206,"stem":1207},"Форми і валідація: повний цикл обробки даних","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Fforms-validation","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F05.forms-validation",{"title":1209,"path":1210,"stem":1211},"Практичний проєкт: TaskManager на Razor Pages","\u002Fcsharp\u002Faspnet\u002Frazor-pages\u002Fproject-task-manager","01.csharp\u002F11.aspnet\u002F10.razor-pages\u002F06.project-task-manager",{"title":1213,"path":1214,"stem":1215,"children":1216,"page":59},"ASP.NET Core MVC","\u002Fcsharp\u002Faspnet\u002Fmvc","01.csharp\u002F11.aspnet\u002F11.mvc",[1217,1221,1225,1229,1233,1237,1241,1245,1249,1253,1257,1261,1265,1269,1273,1277,1281,1285],{"title":1218,"path":1219,"stem":1220},"Патерн MVC: архітектура, що змінила веб","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fmvc-pattern","01.csharp\u002F11.aspnet\u002F11.mvc\u002F01.mvc-pattern",{"title":1222,"path":1223,"stem":1224},"Від Razor Pages до MVC: концептуальний перехід","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Ffrom-razor-pages","01.csharp\u002F11.aspnet\u002F11.mvc\u002F02.from-razor-pages",{"title":1226,"path":1227,"stem":1228},"Controllers та Actions: серце MVC","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fcontrollers-actions","01.csharp\u002F11.aspnet\u002F11.mvc\u002F03.controllers-actions",{"title":1230,"path":1231,"stem":1232},"Маршрутизація в MVC: Convention vs Attribute Routing","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Frouting-mvc","01.csharp\u002F11.aspnet\u002F11.mvc\u002F04.routing-mvc",{"title":1234,"path":1235,"stem":1236},"Model Binding: від HTTP до C#","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fmodel-binding","01.csharp\u002F11.aspnet\u002F11.mvc\u002F05.model-binding",{"title":1238,"path":1239,"stem":1240},"Views, ViewData, ViewBag, TempData і ViewModel","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fviews-viewdata-tempdata","01.csharp\u002F11.aspnet\u002F11.mvc\u002F06.views-viewdata-tempdata",{"title":1242,"path":1243,"stem":1244},"Filters: аспектно-орієнтоване програмування в MVC","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Ffilters","01.csharp\u002F11.aspnet\u002F11.mvc\u002F07.filters",{"title":1246,"path":1247,"stem":1248},"Areas: структурування великих застосунків","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fareas","01.csharp\u002F11.aspnet\u002F11.mvc\u002F08.areas",{"title":1250,"path":1251,"stem":1252},"View Components: повторювані незалежні блоки UI","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fview-components","01.csharp\u002F11.aspnet\u002F11.mvc\u002F09.view-components",{"title":1254,"path":1255,"stem":1256},"Display та Editor Templates","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fdisplay-editor-templates","01.csharp\u002F11.aspnet\u002F11.mvc\u002F10.display-editor-templates",{"title":1258,"path":1259,"stem":1260},"Валідація: IValidatableObject та FluentValidation","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fvalidation-advanced","01.csharp\u002F11.aspnet\u002F11.mvc\u002F11.validation-advanced",{"title":1262,"path":1263,"stem":1264},"HTMX: інтерактивність через HTML-атрибути","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fhtmx","01.csharp\u002F11.aspnet\u002F11.mvc\u002F12.htmx",{"title":1266,"path":1267,"stem":1268},"HTMX у ASP.NET Core MVC: серверна інтеграція","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fajax-htmx-mvc","01.csharp\u002F11.aspnet\u002F11.mvc\u002F13.ajax-htmx-mvc",{"title":1270,"path":1271,"stem":1272},"Практичний проєкт: Каталог товарів з HTMX","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fhtmx-project","01.csharp\u002F11.aspnet\u002F11.mvc\u002F14.htmx-project",{"title":1274,"path":1275,"stem":1276},"Завантаження та обробка файлів","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Ffile-upload","01.csharp\u002F11.aspnet\u002F11.mvc\u002F15.file-upload",{"title":1278,"path":1279,"stem":1280},"Глобалізація та Локалізація MVC","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fglobalization-localization","01.csharp\u002F11.aspnet\u002F11.mvc\u002F16.globalization-localization",{"title":1282,"path":1283,"stem":1284},"Підсумковий проєкт: Блог-платформа","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fmvc-project","01.csharp\u002F11.aspnet\u002F11.mvc\u002F17.mvc-project",{"title":1286,"path":1287,"stem":1288},"План курсу: ASP.NET Core MVC","\u002Fcsharp\u002Faspnet\u002Fmvc\u002Fplan","01.csharp\u002F11.aspnet\u002F11.mvc\u002Fplan",{"title":1290,"path":1291,"stem":1292,"children":1293,"page":59},"Web Api","\u002Fcsharp\u002Faspnet\u002Fweb-api","01.csharp\u002F11.aspnet\u002F12.web-api",[1294,1298,1302,1306,1310,1314,1318,1322,1326,1330,1334,1338,1342],{"title":1295,"path":1296,"stem":1297},"Від Minimal API до Controller-based API","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Ffrom-minimal-api-to-controllers","01.csharp\u002F11.aspnet\u002F12.web-api\u002F01.from-minimal-api-to-controllers",{"title":1299,"path":1300,"stem":1301},"ControllerBase, ActionResult\u003CT> та Response Types","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fcontroller-base-actionresult","01.csharp\u002F11.aspnet\u002F12.web-api\u002F02.controller-base-actionresult",{"title":1303,"path":1304,"stem":1305},"Content Negotiation - JSON, XML та власні форматери","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fcontent-negotiation","01.csharp\u002F11.aspnet\u002F12.web-api\u002F03.content-negotiation",{"title":1307,"path":1308,"stem":1309},"Версіонування API","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fapi-versioning","01.csharp\u002F11.aspnet\u002F12.web-api\u002F04.api-versioning",{"title":1311,"path":1312,"stem":1313},"ProblemDetails та структурована обробка помилок","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fproblemdetails-error-handling","01.csharp\u002F11.aspnet\u002F12.web-api\u002F05.problemdetails-error-handling",{"title":1315,"path":1316,"stem":1317},"Фільтри у Web API контексті","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Ffilters-for-api","01.csharp\u002F11.aspnet\u002F12.web-api\u002F06.filters-for-api",{"title":1319,"path":1320,"stem":1321},"Пагінація, фільтрація та сортування","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fpagination-filtering-sorting","01.csharp\u002F11.aspnet\u002F12.web-api\u002F07.pagination-filtering-sorting",{"title":1323,"path":1324,"stem":1325},"HATEOAS та Resource Expansion","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fhateoas-resource-expansion","01.csharp\u002F11.aspnet\u002F12.web-api\u002F08.hateoas-resource-expansion",{"title":1327,"path":1328,"stem":1329},"Гібридна архітектура - Minimal API + Controllers","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fminimal-api-vs-controllers-hybrid","01.csharp\u002F11.aspnet\u002F12.web-api\u002F09.minimal-api-vs-controllers-hybrid",{"title":1331,"path":1332,"stem":1333},"Документація API - Swashbuckle, NSwag та генерація клієнтів","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fapi-documentation-generation","01.csharp\u002F11.aspnet\u002F12.web-api\u002F10.api-documentation-generation",{"title":1335,"path":1336,"stem":1337},"Health Checks та моніторинг API","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fhealth-checks-monitoring","01.csharp\u002F11.aspnet\u002F12.web-api\u002F11.health-checks-monitoring",{"title":1339,"path":1340,"stem":1341},"Підсумковий проєкт - Production-Ready REST API","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fweb-api-project","01.csharp\u002F11.aspnet\u002F12.web-api\u002F12.web-api-project",{"title":1343,"path":1344,"stem":1345},"План курсу: ASP.NET Core Web API (Controllers)","\u002Fcsharp\u002Faspnet\u002Fweb-api\u002Fplan","01.csharp\u002F11.aspnet\u002F12.web-api\u002Fplan",{"title":1347,"icon":1348,"path":1349,"stem":1350,"children":1351,"page":59},"Моніторинг","i-lucide-activity","\u002Fcsharp\u002Faspnet\u002Fmonitoring","01.csharp\u002F11.aspnet\u002F13.monitoring",[1352,1356,1360],{"title":1353,"path":1354,"stem":1355},"Спостережуваність: від console.log до production-систем","\u002Fcsharp\u002Faspnet\u002Fmonitoring\u002Fobservability-intro","01.csharp\u002F11.aspnet\u002F13.monitoring\u002F01.observability-intro",{"title":1357,"path":1358,"stem":1359},"Health Checks: перший рівень observability","\u002Fcsharp\u002Faspnet\u002Fmonitoring\u002Fhealth-checks","01.csharp\u002F11.aspnet\u002F13.monitoring\u002F02.health-checks",{"title":1361,"path":1362,"stem":1363},"Вбудовані метрики .NET 10 та System.Diagnostics.Metrics","\u002Fcsharp\u002Faspnet\u002Fmonitoring\u002Fdotnet-metrics","01.csharp\u002F11.aspnet\u002F13.monitoring\u002F03.dotnet-metrics",{"title":1365,"icon":1366,"path":1367,"stem":1368,"children":1369,"page":59},"Desktop UI","i-lucide-app-window","\u002Fcsharp\u002Fdesktop-ui","01.csharp\u002F12.desktop-ui",[1370,1374,1378,1382,1386,1390,1394,1398,1402,1406,1410,1414,1418,1422,1426,1430,1434,1438,1442,1446,1450,1454,1458,1462,1466,1470,1474,1478,1482,1486,1490,1494,1498,1502,1506,1510,1514,1518,1522,1526,1530,1534,1538,1542,1546,1550,1554,1558,1562,1566,1570,1574,1578,1582,1586,1590,1594,1598,1602,1606,1610,1614,1618,1622,1626,1630,1634,1638,1642,1646,1650],{"title":1371,"path":1372,"stem":1373},"Що таке десктопна розробка?","\u002Fcsharp\u002Fdesktop-ui\u002Fwhat-is-desktop-dev","01.csharp\u002F12.desktop-ui\u002F01.what-is-desktop-dev",{"title":1375,"path":1376,"stem":1377},"Архітектура WPF — як влаштований графічний інтерфейс","\u002Fcsharp\u002Fdesktop-ui\u002Fwpf-architecture","01.csharp\u002F12.desktop-ui\u002F02.wpf-architecture",{"title":1379,"path":1380,"stem":1381},"Перший WPF-проєкт — від нуля до вікна","\u002Fcsharp\u002Fdesktop-ui\u002Ffirst-wpf-app","01.csharp\u002F12.desktop-ui\u002F03.first-wpf-app",{"title":1383,"path":1384,"stem":1385},"Перший Avalonia-проєкт: WPF для всіх платформ","\u002Fcsharp\u002Fdesktop-ui\u002F03a.first-avalonia-app","01.csharp\u002F12.desktop-ui\u002F03a.first-avalonia-app",{"title":1387,"path":1388,"stem":1389},"XAML: декларативний інтерфейс","\u002Fcsharp\u002Fdesktop-ui\u002Fxaml-basics","01.csharp\u002F12.desktop-ui\u002F04.xaml-basics",{"title":1391,"path":1392,"stem":1393},"Fluent UI у WPF — сучасний дизайн Windows 11","\u002Fcsharp\u002Fdesktop-ui\u002F04a.wpf-fluent-ui","01.csharp\u002F12.desktop-ui\u002F04a.wpf-fluent-ui",{"title":1395,"path":1396,"stem":1397},"WPF UI — сучасна бібліотека Fluent контролів","\u002Fcsharp\u002Fdesktop-ui\u002F04b.wpf-ui-library","01.csharp\u002F12.desktop-ui\u002F04b.wpf-ui-library",{"title":1399,"path":1400,"stem":1401},"HandyControl — велика бібліотека UI контролів для WPF","\u002Fcsharp\u002Fdesktop-ui\u002F04c.handycontrol-library","01.csharp\u002F12.desktop-ui\u002F04c.handycontrol-library",{"title":1403,"path":1404,"stem":1405},"Простори імен та ресурси XAML","\u002Fcsharp\u002Fdesktop-ui\u002Fxaml-namespaces-resources","01.csharp\u002F12.desktop-ui\u002F05.xaml-namespaces-resources",{"title":1407,"path":1408,"stem":1409},"XAML в Avalonia: ключові відмінності від WPF","\u002Fcsharp\u002Fdesktop-ui\u002F05a.avalonia-xaml-differences","01.csharp\u002F12.desktop-ui\u002F05a.avalonia-xaml-differences",{"title":1411,"path":1412,"stem":1413},"Розширення розмітки XAML (Markup Extensions)","\u002Fcsharp\u002Fdesktop-ui\u002Fxaml-markup-extensions","01.csharp\u002F12.desktop-ui\u002F06.xaml-markup-extensions",{"title":1415,"path":1416,"stem":1417},"Панелі Layout: StackPanel, WrapPanel, DockPanel","\u002Fcsharp\u002Fdesktop-ui\u002Flayout-panels-part1","01.csharp\u002F12.desktop-ui\u002F07.layout-panels-part1",{"title":1419,"path":1420,"stem":1421},"Grid, Canvas, UniformGrid","\u002Fcsharp\u002Fdesktop-ui\u002Flayout-panels-part2","01.csharp\u002F12.desktop-ui\u002F07.layout-panels-part2",{"title":1423,"path":1424,"stem":1425},"Просунуті техніки Layout","\u002Fcsharp\u002Fdesktop-ui\u002Flayout-advanced","01.csharp\u002F12.desktop-ui\u002F08.layout-advanced",{"title":1427,"path":1428,"stem":1429},"Адаптивний Layout та найкращі практики","\u002Fcsharp\u002Fdesktop-ui\u002Flayout-responsive","01.csharp\u002F12.desktop-ui\u002F09.layout-responsive",{"title":1431,"path":1432,"stem":1433},"Layout в Avalonia: відмінності та нові можливості","\u002Fcsharp\u002Fdesktop-ui\u002F09a.layout-avalonia","01.csharp\u002F12.desktop-ui\u002F09a.layout-avalonia",{"title":1435,"path":1436,"stem":1437},"Button, Image, ProgressBar та інші базові контроли","\u002Fcsharp\u002Fdesktop-ui\u002Fbasic-controls","01.csharp\u002F12.desktop-ui\u002F10.basic-controls",{"title":1439,"path":1440,"stem":1441},"Контроли в Avalonia: відмінності від WPF","\u002Fcsharp\u002Fdesktop-ui\u002F10a.controls-avalonia","01.csharp\u002F12.desktop-ui\u002F10a.controls-avalonia",{"title":1443,"path":1444,"stem":1445},"Текстові контроли — TextBlock, TextBox, RichTextBox","\u002Fcsharp\u002Fdesktop-ui\u002Ftext-controls","01.csharp\u002F12.desktop-ui\u002F11.text-controls",{"title":1447,"path":1448,"stem":1449},"Контроли вибору — CheckBox, RadioButton, ComboBox, ListBox, DatePicker","\u002Fcsharp\u002Fdesktop-ui\u002Fselection-controls","01.csharp\u002F12.desktop-ui\u002F12.selection-controls",{"title":1451,"path":1452,"stem":1453},"Content Model — GroupBox, Expander, TabControl, StatusBar","\u002Fcsharp\u002Fdesktop-ui\u002Fcontent-controls","01.csharp\u002F12.desktop-ui\u002F13.content-controls",{"title":1455,"path":1456,"stem":1457},"UI\u002FUX принципи десктопних застосунків","\u002Fcsharp\u002Fdesktop-ui\u002F13a.ui-ux-principles","01.csharp\u002F12.desktop-ui\u002F13a.ui-ux-principles",{"title":1459,"path":1460,"stem":1461},"Dependency Properties — Концепція та Value Resolution","\u002Fcsharp\u002Fdesktop-ui\u002Fdependency-properties-part1","01.csharp\u002F12.desktop-ui\u002F14.dependency-properties-part1",{"title":1463,"path":1464,"stem":1465},"Avalonia Property System — StyledProperty та DirectProperty","\u002Fcsharp\u002Fdesktop-ui\u002F14a.avalonia-property-system","01.csharp\u002F12.desktop-ui\u002F14a.avalonia-property-system",{"title":1467,"path":1468,"stem":1469},"Attached Properties — Властивості без меж","\u002Fcsharp\u002Fdesktop-ui\u002Fattached-properties","01.csharp\u002F12.desktop-ui\u002F15.attached-properties",{"title":1471,"path":1472,"stem":1473},"Routed Events — Маршрутизація подій у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Frouted-events","01.csharp\u002F12.desktop-ui\u002F16.routed-events",{"title":1475,"path":1476,"stem":1477},"Data Binding — Від Code-Behind до Декларативності","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-binding-basics-part1","01.csharp\u002F12.desktop-ui\u002F17.data-binding-basics-part1",{"title":1479,"path":1480,"stem":1481},"INotifyPropertyChanged — Живе оновлення UI","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-binding-basics-part2","01.csharp\u002F12.desktop-ui\u002F17.data-binding-basics-part2",{"title":1483,"path":1484,"stem":1485},"Compiled Bindings в Avalonia — Безпека на етапі компіляції","\u002Fcsharp\u002Fdesktop-ui\u002F17a.avalonia-compiled-bindings","01.csharp\u002F12.desktop-ui\u002F17a.avalonia-compiled-bindings",{"title":1487,"path":1488,"stem":1489},"Просунутий Data Binding — ElementName, RelativeSource, MultiBinding","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-binding-advanced","01.csharp\u002F12.desktop-ui\u002F18.data-binding-advanced",{"title":1491,"path":1492,"stem":1493},"Value Converters — Перетворення типів даних у Data Binding","\u002Fcsharp\u002Fdesktop-ui\u002Fvalue-converters","01.csharp\u002F12.desktop-ui\u002F19.value-converters",{"title":1495,"path":1496,"stem":1497},"Data Templates — Візуалізація об'єктів у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-templates","01.csharp\u002F12.desktop-ui\u002F20.data-templates",{"title":1499,"path":1500,"stem":1501},"Collections Binding Part 1 — ObservableCollection та ItemsControl","\u002Fcsharp\u002Fdesktop-ui\u002Fcollections-binding-part1","01.csharp\u002F12.desktop-ui\u002F21.collections-binding-part1",{"title":1503,"path":1504,"stem":1505},"Collections Binding Part 2 — ICollectionView, Filtering, Sorting та Virtualization","\u002Fcsharp\u002Fdesktop-ui\u002Fcollections-binding-part2","01.csharp\u002F12.desktop-ui\u002F21.collections-binding-part2",{"title":1507,"path":1508,"stem":1509},"MVVM Pattern — Від Spaghetti Code до архітектури","\u002Fcsharp\u002Fdesktop-ui\u002Fmvvm-pattern","01.csharp\u002F12.desktop-ui\u002F22.mvvm-pattern",{"title":1511,"path":1512,"stem":1513},"ViewModel Implementation — Від BaseViewModel до валідації","\u002Fcsharp\u002Fdesktop-ui\u002Fviewmodel-implementation","01.csharp\u002F12.desktop-ui\u002F23.viewmodel-implementation",{"title":1515,"path":1516,"stem":1517},"Commands — Від event handlers до декларативних команд","\u002Fcsharp\u002Fdesktop-ui\u002Fcommands","01.csharp\u002F12.desktop-ui\u002F24.commands",{"title":1519,"path":1520,"stem":1521},"MVVM Toolkit — MVVM без boilerplate через Source Generators","\u002Fcsharp\u002Fdesktop-ui\u002Fmvvm-toolkit","01.csharp\u002F12.desktop-ui\u002F25.mvvm-toolkit",{"title":1523,"path":1524,"stem":1525},"Messenger Pattern — Комунікація між ViewModel без прямих посилань","\u002Fcsharp\u002Fdesktop-ui\u002Fmessenger-pattern","01.csharp\u002F12.desktop-ui\u002F26.messenger-pattern",{"title":1527,"path":1528,"stem":1529},"Стилі WPF — CSS для десктопу","\u002Fcsharp\u002Fdesktop-ui\u002Fstyles-basics","01.csharp\u002F12.desktop-ui\u002F27.styles-basics",{"title":1531,"path":1532,"stem":1533},"CSS-like стилі Avalonia","\u002Fcsharp\u002Fdesktop-ui\u002F27a.avalonia-css-styling","01.csharp\u002F12.desktop-ui\u002F27a.avalonia-css-styling",{"title":1535,"path":1536,"stem":1537},"Control Templates — Частина 1. Концепція та TemplateBinding","\u002Fcsharp\u002Fdesktop-ui\u002Fcontrol-templates-part1","01.csharp\u002F12.desktop-ui\u002F28.control-templates-part1",{"title":1539,"path":1540,"stem":1541},"Control Templates — Частина 2. Named Parts та ContentPresenter","\u002Fcsharp\u002Fdesktop-ui\u002Fcontrol-templates-part2","01.csharp\u002F12.desktop-ui\u002F28.control-templates-part2",{"title":1543,"path":1544,"stem":1545},"Control Themes в Avalonia — нова ера стилізації","\u002Fcsharp\u002Fdesktop-ui\u002F28a.avalonia-control-themes","01.csharp\u002F12.desktop-ui\u002F28a.avalonia-control-themes",{"title":1547,"path":1548,"stem":1549},"Triggers та Visual State Manager у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Ftriggers-visual-states","01.csharp\u002F12.desktop-ui\u002F29.triggers-visual-states",{"title":1551,"path":1552,"stem":1553},"Pseudo-classes в Avalonia — замість WPF Triggers","\u002Fcsharp\u002Fdesktop-ui\u002F29a.avalonia-pseudo-classes","01.csharp\u002F12.desktop-ui\u002F29a.avalonia-pseudo-classes",{"title":1555,"path":1556,"stem":1557},"Теми та ресурсні словники у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fresources-themes","01.csharp\u002F12.desktop-ui\u002F30.resources-themes",{"title":1559,"path":1560,"stem":1561},"Avalonia Themes — Fluent Design та система тематизації","\u002Fcsharp\u002Fdesktop-ui\u002F30a.avalonia-themes-fluent","01.csharp\u002F12.desktop-ui\u002F30a.avalonia-themes-fluent",{"title":1563,"path":1564,"stem":1565},"Контроли колекцій — глибоке занурення","\u002Fcsharp\u002Fdesktop-ui\u002Fcollection-controls","01.csharp\u002F12.desktop-ui\u002F31.collection-controls",{"title":1567,"path":1568,"stem":1569},"DataGrid — колонки та базове відображення","\u002Fcsharp\u002Fdesktop-ui\u002Fdatagrid-part1","01.csharp\u002F12.desktop-ui\u002F32.datagrid-part1",{"title":1571,"path":1572,"stem":1573},"DataGrid — сортування, фільтрація, редагування","\u002Fcsharp\u002Fdesktop-ui\u002Fdatagrid-part2","01.csharp\u002F12.desktop-ui\u002F32.datagrid-part2",{"title":1575,"path":1576,"stem":1577},"TreeView та GridView","\u002Fcsharp\u002Fdesktop-ui\u002Ftreeview-listview","01.csharp\u002F12.desktop-ui\u002F33.treeview-listview",{"title":1579,"path":1580,"stem":1581},"Меню, Toolbar, ContextMenu, StatusBar","\u002Fcsharp\u002Fdesktop-ui\u002Fmenus-toolbars","01.csharp\u002F12.desktop-ui\u002F34.menus-toolbars",{"title":1583,"path":1584,"stem":1585},"Навігація та керування вікнами. Частина 1: вікна та сторінки","\u002Fcsharp\u002Fdesktop-ui\u002Fnavigation-windows-part1","01.csharp\u002F12.desktop-ui\u002F35.navigation-windows-part1",{"title":1587,"path":1588,"stem":1589},"Навігація та керування вікнами. Частина 2: MVVM-навігація","\u002Fcsharp\u002Fdesktop-ui\u002Fnavigation-windows-part2","01.csharp\u002F12.desktop-ui\u002F35.navigation-windows-part2",{"title":1591,"path":1592,"stem":1593},"Avalonia — Навігація та діалоги","\u002Fcsharp\u002Fdesktop-ui\u002F35a.avalonia-navigation-dialogs","01.csharp\u002F12.desktop-ui\u002F35a.avalonia-navigation-dialogs",{"title":1595,"path":1596,"stem":1597},"Діалоги та File Pickers у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fdialogs-file-pickers","01.csharp\u002F12.desktop-ui\u002F36.dialogs-file-pickers",{"title":1599,"path":1600,"stem":1601},"UserControl: компонентний підхід у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fuser-controls","01.csharp\u002F12.desktop-ui\u002F37.user-controls",{"title":1603,"path":1604,"stem":1605},"Custom Controls: Lookless Controls у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fcustom-controls","01.csharp\u002F12.desktop-ui\u002F38.custom-controls",{"title":1607,"path":1608,"stem":1609},"Avalonia TemplatedControl — Lookless Controls","\u002Fcsharp\u002Fdesktop-ui\u002F38a.avalonia-templated-controls","01.csharp\u002F12.desktop-ui\u002F38a.avalonia-templated-controls",{"title":1611,"path":1612,"stem":1613},"Анімації у WPF: Storyboard та Easing Functions","\u002Fcsharp\u002Fdesktop-ui\u002Fanimations-transitions","01.csharp\u002F12.desktop-ui\u002F39.animations-transitions",{"title":1615,"path":1616,"stem":1617},"Анімації в Avalonia","\u002Fcsharp\u002Fdesktop-ui\u002F39a.avalonia-animations","01.csharp\u002F12.desktop-ui\u002F39a.avalonia-animations",{"title":1619,"path":1620,"stem":1621},"2D Графіка та Мультимедіа у WPF","\u002Fcsharp\u002Fdesktop-ui\u002Fmedia-graphics","01.csharp\u002F12.desktop-ui\u002F40.media-graphics",{"title":1623,"path":1624,"stem":1625},"Dependency Injection у WPF та Avalonia","\u002Fcsharp\u002Fdesktop-ui\u002Fdi-integration","01.csharp\u002F12.desktop-ui\u002F41.di-integration",{"title":1627,"path":1628,"stem":1629},"SQLite та EF Core у десктопних додатках","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-persistence-part1","01.csharp\u002F12.desktop-ui\u002F42.data-persistence-part1",{"title":1631,"path":1632,"stem":1633},"Repository Pattern та Unit of Work","\u002Fcsharp\u002Fdesktop-ui\u002Fdata-persistence-part2","01.csharp\u002F12.desktop-ui\u002F43.data-persistence-part2",{"title":1635,"path":1636,"stem":1637},"Тестування ViewModels","\u002Fcsharp\u002Fdesktop-ui\u002Fviewmodel-testing","01.csharp\u002F12.desktop-ui\u002F44.viewmodel-testing",{"title":1639,"path":1640,"stem":1641},"Avalonia Headless Testing — тестування UI без вікон","\u002Fcsharp\u002Fdesktop-ui\u002F44a.avalonia-headless-testing","01.csharp\u002F12.desktop-ui\u002F44a.avalonia-headless-testing",{"title":1643,"path":1644,"stem":1645},"Кросплатформна розробка з Avalonia","\u002Fcsharp\u002Fdesktop-ui\u002Favalonia-cross-platform","01.csharp\u002F12.desktop-ui\u002F45.avalonia-cross-platform",{"title":1647,"path":1648,"stem":1649},"Пакування та розгортання Avalonia додатків","\u002Fcsharp\u002Fdesktop-ui\u002Favalonia-packaging-deployment","01.csharp\u002F12.desktop-ui\u002F46.avalonia-packaging-deployment",{"title":1651,"path":1652,"stem":1653},"Розгортання WPF застосунків","\u002Fcsharp\u002Fdesktop-ui\u002Fwpf-packaging-deployment","01.csharp\u002F12.desktop-ui\u002F47.wpf-packaging-deployment",{"title":1655,"icon":658,"path":1656,"stem":1657,"children":1658,"page":59},"Network Programming","\u002Fcsharp\u002Fnetwork-programming","01.csharp\u002F13.network-programming",[1659,1663,1667,1671,1675,1679,1683,1687,1691,1695,1699],{"title":1660,"path":1661,"stem":1662},"Основи комп'ютерних мереж","\u002Fcsharp\u002Fnetwork-programming\u002Ffoundations","01.csharp\u002F13.network-programming\u002F01.foundations",{"title":1664,"path":1665,"stem":1666},"Модель OSI та стек TCP\u002FIP","\u002Fcsharp\u002Fnetwork-programming\u002Fosi-model","01.csharp\u002F13.network-programming\u002F02.osi-model",{"title":1668,"path":1669,"stem":1670},"IP-протокол та адресація","\u002Fcsharp\u002Fnetwork-programming\u002Fip-addressing","01.csharp\u002F13.network-programming\u002F03.ip-addressing",{"title":1672,"path":1673,"stem":1674},"UDP — протокол без з'єднання","\u002Fcsharp\u002Fnetwork-programming\u002Fudp","01.csharp\u002F13.network-programming\u002F05.udp",{"title":1676,"path":1677,"stem":1678},"UDP Broadcast та Multicast","\u002Fcsharp\u002Fnetwork-programming\u002Fudp-broadcast-multicast","01.csharp\u002F13.network-programming\u002F06.udp-broadcast-multicast",{"title":1680,"path":1681,"stem":1682},"HTTP — протокол вебу","\u002Fcsharp\u002Fnetwork-programming\u002Fhttp-fundamentals","01.csharp\u002F13.network-programming\u002F07.http-fundamentals",{"title":1684,"path":1685,"stem":1686},"HttpListener — вбудований HTTP-сервер .NET","\u002Fcsharp\u002Fnetwork-programming\u002F07a.http-listener","01.csharp\u002F13.network-programming\u002F07a.http-listener",{"title":1688,"path":1689,"stem":1690},"HTTP Advanced — cookies, аутентифікація та HTTPS","\u002Fcsharp\u002Fnetwork-programming\u002Fhttp-advanced","01.csharp\u002F13.network-programming\u002F08.http-advanced",{"title":1692,"path":1693,"stem":1694},"SMTP та протоколи електронної пошти","\u002Fcsharp\u002Fnetwork-programming\u002Fsmtp","01.csharp\u002F13.network-programming\u002F09.smtp",{"title":1696,"path":1697,"stem":1698},"WebSocket — повнодуплексний протокол реального часу","\u002Fcsharp\u002Fnetwork-programming\u002Fwebsockets","01.csharp\u002F13.network-programming\u002F10.websockets",{"title":1700,"path":1701,"stem":1702},"TLS\u002FSSL — криптографічний захист мережевих з'єднань","\u002Fcsharp\u002Fnetwork-programming\u002Ftls-ssl","01.csharp\u002F13.network-programming\u002F11.tls-ssl",{"title":1704,"path":1705,"stem":1706},"C# & .NET: The Ultimate Roadmap","\u002Fcsharp\u002Froadmap","01.csharp\u002Froadmap",{"title":1708,"icon":1709,"path":1710,"stem":1711,"children":1712,"page":59},"C++","i-devicon-cplusplus","\u002Fcpp","02.cpp",[1713,1717,1721,1725,1729,1733,1737,1741,1745,1748,1752,1756,1760,1764,1768,1772,1776,1780,1784,1788,1792,1796,1800,1804,1808,1812,1816,1820,1824,1828,1832,1836,1840,1844,1848,1852,1856,1860,1864,1868,1872,1876,1880,1884,1888,1892,1896,1900,1904,1908,1912,1916,1920,1924,1928,1932,1936,1940,1944,1948,1952,1956,1960,1964,1968,1972,1976,1980,1984,1988,1992,1996,2000,2004,2008,2012,2016,2020,2024,2028,2032,2036],{"title":1714,"path":1715,"stem":1716},"Вступ у програмування та алгоритми","\u002Fcpp\u002Fintro-algorithms","02.cpp\u002F01.intro-algorithms",{"title":1718,"path":1719,"stem":1720},"Code Style: угоди про оформлення коду","\u002Fcpp\u002Fcode-style","02.cpp\u002F02.code-style",{"title":1722,"path":1723,"stem":1724},"Середовище розробки та перший проєкт","\u002Fcpp\u002Fide-setup","02.cpp\u002F03.ide-setup",{"title":1726,"path":1727,"stem":1728},"Вивід даних на екран","\u002Fcpp\u002Fdata-output","02.cpp\u002F04.data-output",{"title":1730,"path":1731,"stem":1732},"Типи даних, змінні та константи","\u002Fcpp\u002Fdata-types-variables","02.cpp\u002F05.data-types-variables",{"title":1734,"path":1735,"stem":1736},"Ввід даних з клавіатури","\u002Fcpp\u002Fdata-input","02.cpp\u002F06.data-input",{"title":1738,"path":1739,"stem":1740},"Оператори, перетворення типів та логічні операції","\u002Fcpp\u002Foperators-type-conversion","02.cpp\u002F07.operators-type-conversion",{"title":1742,"path":1743,"stem":1744},"Цикли","\u002Fcpp\u002Floops","02.cpp\u002F08.loops",{"title":32,"path":1746,"stem":1747},"\u002Fcpp\u002Farrays","02.cpp\u002F09.arrays",{"title":1749,"path":1750,"stem":1751},"Алгоритми сортування та аналіз складності","\u002Fcpp\u002Fsorting","02.cpp\u002F10.sorting",{"title":1753,"path":1754,"stem":1755},"Алгоритми пошуку","\u002Fcpp\u002Fsearching","02.cpp\u002F11.searching",{"title":1757,"path":1758,"stem":1759},"Функції: основи","\u002Fcpp\u002Ffunctions-basics","02.cpp\u002F12.functions-basics",{"title":1761,"path":1762,"stem":1763},"Функції: прототипи, область видимості та додаткові можливості","\u002Fcpp\u002Ffunctions-scope","02.cpp\u002F13.functions-scope",{"title":1765,"path":1766,"stem":1767},"Функції: перевантаження та шаблони","\u002Fcpp\u002Ffunctions-overloading-templates","02.cpp\u002F14.functions-overloading-templates",{"title":1769,"path":1770,"stem":1771},"Вказівники: основи","\u002Fcpp\u002Fpointers-basics","02.cpp\u002F15.pointers-basics",{"title":1773,"path":1774,"stem":1775},"Посилання (References)","\u002Fcpp\u002Freferences","02.cpp\u002F16.references",{"title":1777,"path":1778,"stem":1779},"Вказівники, const і масиви","\u002Fcpp\u002Fpointers-const-arrays","02.cpp\u002F17.pointers-const-arrays",{"title":1781,"path":1782,"stem":1783},"Адресна арифметика","\u002Fcpp\u002Fpointer-arithmetic","02.cpp\u002F18.pointer-arithmetic",{"title":1785,"path":1786,"stem":1787},"Динамічна пам'ять","\u002Fcpp\u002Fdynamic-memory","02.cpp\u002F19.dynamic-memory",{"title":1789,"path":1790,"stem":1791},"Вказівники типу void","\u002Fcpp\u002Fvoid-pointers","02.cpp\u002F20.void-pointers",{"title":1793,"path":1794,"stem":1795},"Вказівники на вказівники","\u002Fcpp\u002Fpointers-to-pointers","02.cpp\u002F21.pointers-to-pointers",{"title":1797,"path":1798,"stem":1799},"Оператор доступу до членів через вказівник (->)","\u002Fcpp\u002Fmember-access-operator","02.cpp\u002F22.member-access-operator",{"title":1801,"path":1802,"stem":1803},"Цикл for-each (Range-based for)","\u002Fcpp\u002Fforeach-loop","02.cpp\u002F23.foreach-loop",{"title":1805,"path":1806,"stem":1807},"Вказівники на функції","\u002Fcpp\u002Ffunction-pointers","02.cpp\u002F24.function-pointers",{"title":1809,"path":1810,"stem":1811},"Лямбда-вирази","\u002Fcpp\u002Flambdas","02.cpp\u002F25.lambdas",{"title":1813,"path":1814,"stem":1815},"Лямбда-захоплення","\u002Fcpp\u002Flambda-captures","02.cpp\u002F26.lambda-captures",{"title":1817,"path":1818,"stem":1819},"Еліпсис","\u002Fcpp\u002Fellipsis","02.cpp\u002F27.ellipsis",{"title":1821,"path":1822,"stem":1823},"Безпечні альтернативи еліпсису","\u002Fcpp\u002F27a.ellipsis","02.cpp\u002F27a.ellipsis",{"title":1825,"path":1826,"stem":1827},"Аргументи командного рядка","\u002Fcpp\u002Fcommand-line-arguments","02.cpp\u002F28.command-line-arguments",{"title":1829,"path":1830,"stem":1831},"Перерахування (enum)","\u002Fcpp\u002Fenum","02.cpp\u002F29.enum",{"title":1833,"path":1834,"stem":1835},"Класи-перерахування (enum class)","\u002Fcpp\u002Fenum-class","02.cpp\u002F30.enum-class",{"title":1837,"path":1838,"stem":1839},"Псевдоніми типів (typedef і using)","\u002Fcpp\u002Ftype-aliases","02.cpp\u002F31.type-aliases",{"title":1841,"path":1842,"stem":1843},"Системи числення та двійкова арифметика","\u002Fcpp\u002Fnumber-systems","02.cpp\u002F32.number-systems",{"title":1845,"path":1846,"stem":1847},"Структури (struct): агрегування даних","\u002Fcpp\u002Fstruct","02.cpp\u002F33.struct",{"title":1849,"path":1850,"stem":1851},"Структури у функціях","\u002Fcpp\u002Fstruct-functions","02.cpp\u002F34.struct-functions",{"title":1853,"path":1854,"stem":1855},"Масиви структур і вкладені структури","\u002Fcpp\u002Fstruct-arrays","02.cpp\u002F35.struct-arrays",{"title":1857,"path":1858,"stem":1859},"Патерни struct та межі застосування","\u002Fcpp\u002Fstruct-patterns","02.cpp\u002F36.struct-patterns",{"title":1861,"path":1862,"stem":1863},"Символи та таблиця ASCII","\u002Fcpp\u002Fascii-characters","02.cpp\u002F37.ascii-characters",{"title":1865,"path":1866,"stem":1867},"Unicode та кодування UTF","\u002Fcpp\u002Funicode-utf","02.cpp\u002F38.unicode-utf",{"title":1869,"path":1870,"stem":1871},"C-style рядки","\u002Fcpp\u002Fc-strings","02.cpp\u002F39.c-strings",{"title":1873,"path":1874,"stem":1875},"Вступ до std::string","\u002Fcpp\u002Fstd-string-intro","02.cpp\u002F40.std-string-intro",{"title":1877,"path":1878,"stem":1879},"Довжина, ємність та доступ до символів std::string","\u002Fcpp\u002Fstd-string-capacity-access","02.cpp\u002F41.std-string-capacity-access",{"title":1881,"path":1882,"stem":1883},"Модифікація std::string: присвоювання, додавання, вставка, видалення та заміна","\u002Fcpp\u002Fstd-string-modification","02.cpp\u002F42.std-string-modification",{"title":1885,"path":1886,"stem":1887},"Пошук у std::string: find, npos та практичні патерни","\u002Fcpp\u002Fstd-string-search","02.cpp\u002F43.std-string-search",{"title":1889,"path":1890,"stem":1891},"std::string_view: невласницький погляд на рядок без копіювання","\u002Fcpp\u002Fstd-string-view","02.cpp\u002F44.std-string-view",{"title":1893,"path":1894,"stem":1895},"Об'єднання (union): один блок пам'яті, кілька інтерпретацій","\u002Fcpp\u002Funion","02.cpp\u002F45.union",{"title":1897,"path":1898,"stem":1899},"Організація коду: файли, препроцесор, простори імен","\u002Fcpp\u002Fmultifile-programs","02.cpp\u002F46.multifile-programs",{"title":1901,"path":1902,"stem":1903},"Робота з файлами: C-стиль (stdio.h)","\u002Fcpp\u002Fc-style-files","02.cpp\u002F47.c-style-files",{"title":1905,"path":1906,"stem":1907},"Робота з файлами: C++-стиль (fstream)","\u002Fcpp\u002Fcpp-style-files","02.cpp\u002F48.cpp-style-files",{"title":1909,"path":1910,"stem":1911},"Введення в ООП: від процедур до об'єктів","\u002Fcpp\u002Foop-intro","02.cpp\u002F49.oop-intro",{"title":1913,"path":1914,"stem":1915},"Класи, об'єкти та методи","\u002Fcpp\u002Fclasses-objects-methods","02.cpp\u002F50.classes-objects-methods",{"title":1917,"path":1918,"stem":1919},"Специфікатори доступу та інкапсуляція","\u002Fcpp\u002Faccess-specifiers-encapsulation","02.cpp\u002F51.access-specifiers-encapsulation",{"title":1921,"path":1922,"stem":1923},"Конструктори: гарантована ініціалізація об'єктів","\u002Fcpp\u002Fconstructors","02.cpp\u002F52.constructors",{"title":1925,"path":1926,"stem":1927},"Списки ініціалізації та делегуючі конструктори","\u002Fcpp\u002Finit-lists-delegating","02.cpp\u002F53.init-lists-delegating",{"title":1929,"path":1930,"stem":1931},"Деструктори та ідіома RAII","\u002Fcpp\u002Fdestructors-raii","02.cpp\u002F54.destructors-raii",{"title":1933,"path":1934,"stem":1935},"Прихований покажчик this","\u002Fcpp\u002Fthis-pointer","02.cpp\u002F55.this-pointer",{"title":1937,"path":1938,"stem":1939},"Розподіл класу на заголовковий файл та файл реалізації","\u002Fcpp\u002Fclass-header-source","02.cpp\u002F56.class-header-source",{"title":1941,"path":1942,"stem":1943},"Класи та const","\u002Fcpp\u002Fconst-classes","02.cpp\u002F57.const-classes",{"title":1945,"path":1946,"stem":1947},"Статичні члени класу","\u002Fcpp\u002Fstatic-members","02.cpp\u002F58.static-members",{"title":1949,"path":1950,"stem":1951},"Конструктор копіювання та запобігання копіюванню","\u002Fcpp\u002Fcopy-constructor","02.cpp\u002F59.copy-constructor",{"title":1953,"path":1954,"stem":1955},"Дружні функції та класи","\u002Fcpp\u002Ffriend-functions-classes","02.cpp\u002F60.friend-functions-classes",{"title":1957,"path":1958,"stem":1959},"Анонімні об'єкти та вкладені типи","\u002Fcpp\u002Fanonymous-objects-nested-types","02.cpp\u002F61.anonymous-objects-nested-types",{"title":1961,"path":1962,"stem":1963},"Вимірювання часу виконання: RAII-таймер","\u002Fcpp\u002Ftiming-raii-timer","02.cpp\u002F62.timing-raii-timer",{"title":1965,"path":1966,"stem":1967},"Перевантаження операторів: основи та арифметика","\u002Fcpp\u002Foperator-overloading-basics","02.cpp\u002F63.operator-overloading-basics",{"title":1969,"path":1970,"stem":1971},"Перевантаження операторів: методи класу та спеціальні оператори","\u002Fcpp\u002Foperator-overloading-methods","02.cpp\u002F64.operator-overloading-methods",{"title":1973,"path":1974,"stem":1975},"Приведення типів, explicit та delete","\u002Fcpp\u002Ftypecast-explicit-delete","02.cpp\u002F65.typecast-explicit-delete",{"title":1977,"path":1978,"stem":1979},"Глибоке копіювання та оператор присвоювання","\u002Fcpp\u002Fdeep-copy-assignment","02.cpp\u002F66.deep-copy-assignment",{"title":1981,"path":1982,"stem":1983},"Зв'язки між об'єктами: композиція та агрегація","\u002Fcpp\u002Fcomposition-aggregation","02.cpp\u002F67.composition-aggregation",{"title":1985,"path":1986,"stem":1987},"Асоціація та залежність між об","\u002Fcpp\u002Fassociation-dependency","02.cpp\u002F68.association-dependency",{"title":1989,"path":1990,"stem":1991},"Контейнерні класи та `std::initializer_list`","\u002Fcpp\u002Fcontainer-classes-initializer-list","02.cpp\u002F69.container-classes-initializer-list",{"title":1993,"path":1994,"stem":1995},"Конструктори, деструктори та порядок ініціалізації в ієрархіях","\u002Fcpp\u002Finheritance-constructors-destructors","02.cpp\u002F71.inheritance-constructors-destructors",{"title":1997,"path":1998,"stem":1999},"Специфікатор `protected` та види наслідування","\u002Fcpp\u002Finheritance-access-specifiers","02.cpp\u002F72.inheritance-access-specifiers",{"title":2001,"path":2002,"stem":2003},"Перевизначення методів та приховування імен","\u002Fcpp\u002Fmethod-overriding-hiding","02.cpp\u002F73.method-overriding-hiding",{"title":2005,"path":2006,"stem":2007},"Множинне наслідування та проблема ромба","\u002Fcpp\u002Fmultiple-inheritance-diamond","02.cpp\u002F74.multiple-inheritance-diamond",{"title":2009,"path":2010,"stem":2011},"Вказівники на базовий клас та віртуальні функції","\u002Fcpp\u002Fvirtual-functions-polymorphism","02.cpp\u002F75.virtual-functions-polymorphism",{"title":2013,"path":2014,"stem":2015},"Специфікатори override, final та віртуальні деструктори","\u002Fcpp\u002Foverride-final-virtual-destructors","02.cpp\u002F76.override-final-virtual-destructors",{"title":2017,"path":2018,"stem":2019},"Внутрішні механізми поліморфізму: vtable, vptr та зв'язування","\u002Fcpp\u002Fvirtual-table-binding","02.cpp\u002F77.virtual-table-binding",{"title":2021,"path":2022,"stem":2023},"Абстрактні класи та чисті віртуальні функції","\u002Fcpp\u002Fabstract-classes-interfaces","02.cpp\u002F78.abstract-classes-interfaces",{"title":2025,"path":2026,"stem":2027},"Зрізка об'єктів, віртуальне наслідування та поліморфний вивід","\u002Fcpp\u002Fslicing-virtual-base-io","02.cpp\u002F79.slicing-virtual-base-io",{"title":2029,"path":2030,"stem":2031},"Динамічне приведення типів (`dynamic_cast`) та RTTI","\u002Fcpp\u002Fdynamic-cast-rtti","02.cpp\u002F80.dynamic-cast-rtti",{"title":2033,"path":2034,"stem":2035},"Шаблони функцій: узагальнене програмування","\u002Fcpp\u002Ffunction-templates","02.cpp\u002F81.function-templates",{"title":2037,"path":2038,"stem":2039},"Шаблони класів та NTTP-параметри","\u002Fcpp\u002Fclass-templates-nttp","02.cpp\u002F82.class-templates-nttp",{"title":2041,"icon":2042,"path":2043,"stem":2044,"children":2045,"page":59},"JavaScript","i-devicon-javascript","\u002Fjavascript","03.javascript",[2046,2072,2126,2148,2452,2490,2508],{"title":2047,"icon":2048,"path":2049,"stem":2050,"children":2051,"page":59},"Events","i-lucide-mouse-pointer-click","\u002Fjavascript\u002Fevents","03.javascript\u002F01.events",[2052,2056,2060,2064,2068],{"title":2053,"path":2054,"stem":2055},"Вступ до подій браузера","\u002Fjavascript\u002Fevents\u002Fintro","03.javascript\u002F01.events\u002F01.intro",{"title":2057,"path":2058,"stem":2059},"Бульбашковий механізм (Bubbling) та занурення (Capturing)","\u002Fjavascript\u002Fevents\u002Fbubbling-capturing","03.javascript\u002F01.events\u002F02.bubbling-capturing",{"title":2061,"path":2062,"stem":2063},"Делегування подій (Event Delegation)","\u002Fjavascript\u002Fevents\u002Fdelegate-events","03.javascript\u002F01.events\u002F03.delegate-events",{"title":2065,"path":2066,"stem":2067},"Типові дії браузера та preventDefault()","\u002Fjavascript\u002Fevents\u002Fprevent-default","03.javascript\u002F01.events\u002F04.prevent-default",{"title":2069,"path":2070,"stem":2071},"Запуск користувацьких подій (Custom Events)","\u002Fjavascript\u002Fevents\u002Fcustom-events","03.javascript\u002F01.events\u002F05.custom-events",{"title":2073,"icon":2074,"path":2075,"stem":2076,"children":2077,"page":59},"Network","i-lucide-globe","\u002Fjavascript\u002Fnetwork","03.javascript\u002F02.network",[2078,2082,2086,2090,2094,2098,2102,2106,2110,2114,2118,2122],{"title":2079,"path":2080,"stem":2081},"Fetch API - Сучасний підхід до HTTP-запитів","\u002Fjavascript\u002Fnetwork\u002F01-fetch-api","03.javascript\u002F02.network\u002F01-fetch-api",{"title":2083,"path":2084,"stem":2085},"FormData - Робота з формами та файлами","\u002Fjavascript\u002Fnetwork\u002F02-formdata","03.javascript\u002F02.network\u002F02-formdata",{"title":2087,"path":2088,"stem":2089},"Відстеження прогресу завантаження","\u002Fjavascript\u002Fnetwork\u002F03-download-progress","03.javascript\u002F02.network\u002F03-download-progress",{"title":2091,"path":2092,"stem":2093},"Переривання fetch-запитів","\u002Fjavascript\u002Fnetwork\u002F04-abort-requests","03.javascript\u002F02.network\u002F04-abort-requests",{"title":2095,"path":2096,"stem":2097},"CORS - Запити між різними джерелами","\u002Fjavascript\u002Fnetwork\u002F05-cors","03.javascript\u002F02.network\u002F05-cors",{"title":2099,"path":2100,"stem":2101},"Fetch API - Повний довідник опцій","\u002Fjavascript\u002Fnetwork\u002F06-fetch-options","03.javascript\u002F02.network\u002F06-fetch-options",{"title":2103,"path":2104,"stem":2105},"URL Objects - Робота з посиланнями","\u002Fjavascript\u002Fnetwork\u002F07-url-objects","03.javascript\u002F02.network\u002F07-url-objects",{"title":2107,"path":2108,"stem":2109},"XMLHttpRequest - AJAX та низькорівневі запити","\u002Fjavascript\u002Fnetwork\u002F08-xmlhttprequest","03.javascript\u002F02.network\u002F08-xmlhttprequest",{"title":2111,"path":2112,"stem":2113},"Відновлюване завантаження файлів","\u002Fjavascript\u002Fnetwork\u002F09-resumable-upload","03.javascript\u002F02.network\u002F09-resumable-upload",{"title":2115,"path":2116,"stem":2117},"Cookies, document.cookie та світ після \"Cookiepocalypse\"","\u002Fjavascript\u002Fnetwork\u002F10-cookies","03.javascript\u002F02.network\u002F10-cookies",{"title":2119,"path":2120,"stem":2121},"js-cookie: Керування Cookies без Болю","\u002Fjavascript\u002Fnetwork\u002F11-js-cookie","03.javascript\u002F02.network\u002F11-js-cookie",{"title":2123,"path":2124,"stem":2125},"Axios: Потужний HTTP-клієнт для JavaScript","\u002Fjavascript\u002Fnetwork\u002F12-axios","03.javascript\u002F02.network\u002F12-axios",{"title":2127,"icon":2128,"path":2129,"stem":2130,"children":2131,"page":59},"Bom","i-lucide-monitor","\u002Fjavascript\u002Fbom","03.javascript\u002F03.bom",[2132,2136,2140,2144],{"title":2133,"path":2134,"stem":2135},"LocalStorage, SessionStorage та patterns збереження даних","\u002Fjavascript\u002Fbom\u002F01-localstorage","03.javascript\u002F03.bom\u002F01-localstorage",{"title":2137,"path":2138,"stem":2139},"Location Object - Керування адресою сторінки","\u002Fjavascript\u002Fbom\u002F02-location-object","03.javascript\u002F03.bom\u002F02-location-object",{"title":2141,"path":2142,"stem":2143},"History API - Керування історією браузера","\u002Fjavascript\u002Fbom\u002F03-history-api","03.javascript\u002F03.bom\u002F03-history-api",{"title":2145,"path":2146,"stem":2147},"Navigator Object - Ідентифікація та Можливості Пристрою","\u002Fjavascript\u002Fbom\u002F04-navigator-object","03.javascript\u002F03.bom\u002F04-navigator-object",{"title":2149,"icon":2150,"path":2151,"stem":2152,"children":2153},"React","i-devicon-react","\u002Fjavascript\u002Freact","03.javascript\u002F04.react\u002Findex",[2154,2155,2159,2163,2167,2171,2234,2269,2421],{"title":2149,"path":2151,"stem":2152},{"title":2156,"path":2157,"stem":2158},"Робота з Формами в React","\u002Fjavascript\u002Freact\u002Freact-forms","03.javascript\u002F04.react\u002F01.react-forms",{"title":2160,"path":2161,"stem":2162},"React Hook Form: Професійна Робота з Формами","\u002Fjavascript\u002Freact\u002Freact-hook-form","03.javascript\u002F04.react\u002F02.react-hook-form",{"title":2164,"path":2165,"stem":2166},"React Hook Form: Глибоке Розуміння Архітектури та Оптимізації","\u002Fjavascript\u002Freact\u002Freact-hook-form-new","03.javascript\u002F04.react\u002F02.react-hook-form-new",{"title":2168,"path":2169,"stem":2170},"Axios та React: Професійна Архітектура Запитів","\u002Fjavascript\u002Freact\u002Fdata-fetching-axios","03.javascript\u002F04.react\u002F03.data-fetching-axios",{"title":2172,"icon":132,"path":2173,"stem":2174,"children":2175},"Tanstack Query","\u002Fjavascript\u002Freact\u002Ftanstack-query","03.javascript\u002F04.react\u002F04.tanstack-query\u002Findex",[2176,2178,2182,2186,2190,2194,2198,2202,2206,2210,2214,2218,2222,2226,2230],{"title":2177,"path":2173,"stem":2174},"TanStack Query: Майстерність Керування Станом Сервера",{"title":2179,"path":2180,"stem":2181},"Парадигма Server State: Чому useEffect недостатньо","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fserver-state-paradigm","03.javascript\u002F04.react\u002F04.tanstack-query\u002F01.server-state-paradigm",{"title":2183,"path":2184,"stem":2185},"Встановлення та Налаштування: Фундамент","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Finstallation-and-devtools","03.javascript\u002F04.react\u002F04.tanstack-query\u002F02.installation-and-devtools",{"title":2187,"path":2188,"stem":2189},"Основи Запитів та Магія Ключів","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fquery-basics-and-keys","03.javascript\u002F04.react\u002F04.tanstack-query\u002F03.query-basics-and-keys",{"title":2191,"path":2192,"stem":2193},"Синхронізація Даних: Життєвий Цикл Запиту","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fdata-synchronization","03.javascript\u002F04.react\u002F04.tanstack-query\u002F04.data-synchronization",{"title":2195,"path":2196,"stem":2197},"Мутації та Інвалідація: Зміна Даних","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fmutations-and-invalidation","03.javascript\u002F04.react\u002F04.tanstack-query\u002F05.mutations-and-invalidation",{"title":2199,"path":2200,"stem":2201},"Оптимістичні Оновлення: Швидше за Світло","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Foptimistic-updates","03.javascript\u002F04.react\u002F04.tanstack-query\u002F06.optimistic-updates",{"title":2203,"path":2204,"stem":2205},"Пагінація та Infinite Scroll","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fpagination-and-load-more","03.javascript\u002F04.react\u002F04.tanstack-query\u002F07.pagination-and-load-more",{"title":2207,"path":2208,"stem":2209},"Просунуті Патерни та Оптимізація","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fadvanced-patterns","03.javascript\u002F04.react\u002F04.tanstack-query\u002F08.advanced-patterns",{"title":2211,"path":2212,"stem":2213},"Архітектура та Best Practices","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Farchitecture-and-best-practices","03.javascript\u002F04.react\u002F04.tanstack-query\u002F09.architecture-and-best-practices",{"title":2215,"path":2216,"stem":2217},"Server-Side Rendering (SSR) та Гідратація","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fserver-side-rendering","03.javascript\u002F04.react\u002F04.tanstack-query\u002F10.server-side-rendering",{"title":2219,"path":2220,"stem":2221},"Стратегії Тестування","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Ftesting-strategies","03.javascript\u002F04.react\u002F04.tanstack-query\u002F11.testing-strategies",{"title":2223,"path":2224,"stem":2225},"Аутентифікація та Обробка Помилок","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fauthentication-and-errors","03.javascript\u002F04.react\u002F04.tanstack-query\u002F12.authentication-and-errors",{"title":2227,"path":2228,"stem":2229},"React Suspense та Майбутнє","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Freact-suspense","03.javascript\u002F04.react\u002F04.tanstack-query\u002F13.react-suspense",{"title":2231,"path":2232,"stem":2233},"Глибоке Занурення в Продуктивність","\u002Fjavascript\u002Freact\u002Ftanstack-query\u002Fperformance-deep-dive","03.javascript\u002F04.react\u002F04.tanstack-query\u002F14.performance-deep-dive",{"title":2235,"icon":2150,"path":2236,"stem":2237,"children":2238},"React Router","\u002Fjavascript\u002Freact\u002Freact-router","03.javascript\u002F04.react\u002F05.react-router\u002Findex",[2239,2241,2245,2249,2253,2257,2261,2265],{"title":2240,"path":2236,"stem":2237},"React Router: Навігаційна система сучасного вебу",{"title":2242,"path":2243,"stem":2244},"Налаштування та Базовий Роутинг","\u002Fjavascript\u002Freact\u002Freact-router\u002Fsetup-and-basic-routing","03.javascript\u002F04.react\u002F05.react-router\u002F01.setup-and-basic-routing",{"title":2246,"path":2247,"stem":2248},"Динамічна Навігація","\u002Fjavascript\u002Freact\u002Freact-router\u002Fnavigation-and-links","03.javascript\u002F04.react\u002F05.react-router\u002F02.navigation-and-links",{"title":2250,"path":2251,"stem":2252},"Вкладені Маршрути та Макети","\u002Fjavascript\u002Freact\u002Freact-router\u002Fnested-routes-and-layouts","03.javascript\u002F04.react\u002F05.react-router\u002F03.nested-routes-and-layouts",{"title":2254,"path":2255,"stem":2256},"Динамічні Маршрути та Параметри","\u002Fjavascript\u002Freact\u002Freact-router\u002Fdynamic-routing","03.javascript\u002F04.react\u002F05.react-router\u002F04.dynamic-routing",{"title":2258,"path":2259,"stem":2260},"Data APIs: Loaders та Actions","\u002Fjavascript\u002Freact\u002Freact-router\u002Fdata-loading","03.javascript\u002F04.react\u002F05.react-router\u002F05.data-loading",{"title":2262,"path":2263,"stem":2264},"Просунуті Патерни","\u002Fjavascript\u002Freact\u002Freact-router\u002Fadvanced-patterns","03.javascript\u002F04.react\u002F05.react-router\u002F06.advanced-patterns",{"title":2266,"path":2267,"stem":2268},"Legacy Routing: Компонентний підхід","\u002Fjavascript\u002Freact\u002Freact-router\u002Flegacy-routing","03.javascript\u002F04.react\u002F05.react-router\u002F07.legacy-routing",{"title":2270,"icon":132,"path":2271,"stem":2272,"children":2273},"Redux","\u002Fjavascript\u002Freact\u002Fredux","03.javascript\u002F04.react\u002F06.redux\u002Findex",[2274,2276,2292,2321,2330,2351,2367,2396],{"title":2275,"path":2271,"stem":2272},"Redux: Еволюція управління станом",{"title":14,"icon":15,"path":2277,"stem":2278,"children":2279,"page":59},"\u002Fjavascript\u002Freact\u002Fredux\u002Ffundamentals","03.javascript\u002F04.react\u002F06.redux\u002F01.fundamentals",[2280,2284,2288],{"title":2281,"path":2282,"stem":2283},"Вступ до State Management","\u002Fjavascript\u002Freact\u002Fredux\u002Ffundamentals\u002Fintro-state-management","03.javascript\u002F04.react\u002F06.redux\u002F01.fundamentals\u002F01.intro-state-management",{"title":2285,"path":2286,"stem":2287},"Філософія Redux та Три Принципи","\u002Fjavascript\u002Freact\u002Fredux\u002Ffundamentals\u002Fredux-philosophy","03.javascript\u002F04.react\u002F06.redux\u002F01.fundamentals\u002F02.redux-philosophy",{"title":2289,"path":2290,"stem":2291},"Чисті функції та Іммутабельність","\u002Fjavascript\u002Freact\u002Fredux\u002Ffundamentals\u002Fpure-functions-immutability","03.javascript\u002F04.react\u002F06.redux\u002F01.fundamentals\u002F03.pure-functions-immutability",{"title":2293,"icon":132,"path":2294,"stem":2295,"children":2296,"page":59},"Classic Redux","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux",[2297,2301,2305,2309,2313,2317],{"title":2298,"path":2299,"stem":2300},"Створення Store (Classic Redux)","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Fstore-setup","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F01.store-setup",{"title":2302,"path":2303,"stem":2304},"Actions, Constants та Action Creators","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Factions-constants","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F02.actions-constants",{"title":2306,"path":2307,"stem":2308},"Логіка Reducers","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Freducers","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F03.reducers",{"title":2310,"path":2311,"stem":2312},"Комбінування Reducers (Root Reducer)","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Fdata-flow","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F04.data-flow",{"title":2314,"path":2315,"stem":2316},"Підключення до React (React-Redux)","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Freact-redux-connection","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F05.react-redux-connection",{"title":2318,"path":2319,"stem":2320},"Middleware та Асинхронність (Redux Thunk)","\u002Fjavascript\u002Freact\u002Fredux\u002Fclassic-redux\u002Fmiddleware-thunk","03.javascript\u002F04.react\u002F06.redux\u002F02.classic-redux\u002F06.middleware-thunk",{"title":2322,"icon":132,"path":2323,"stem":2324,"children":2325,"page":59},"Transition To Rtk","\u002Fjavascript\u002Freact\u002Fredux\u002Ftransition-to-rtk","03.javascript\u002F04.react\u002F06.redux\u002F03.transition-to-rtk",[2326],{"title":2327,"path":2328,"stem":2329},"Проблеми класичного Redux","\u002Fjavascript\u002Freact\u002Fredux\u002Ftransition-to-rtk\u002Fproblems-with-classic","03.javascript\u002F04.react\u002F06.redux\u002F03.transition-to-rtk\u002F01.problems-with-classic",{"title":2331,"icon":132,"path":2332,"stem":2333,"children":2334,"page":59},"Redux Toolkit","\u002Fjavascript\u002Freact\u002Fredux\u002Fredux-toolkit","03.javascript\u002F04.react\u002F06.redux\u002F04.redux-toolkit",[2335,2339,2343,2347],{"title":2336,"path":2337,"stem":2338},"Налаштування Store з configureStore","\u002Fjavascript\u002Freact\u002Fredux\u002Fredux-toolkit\u002Fconfigure-store","03.javascript\u002F04.react\u002F06.redux\u002F04.redux-toolkit\u002F01.configure-store",{"title":2340,"path":2341,"stem":2342},"createSlice: Революція в Redux","\u002Fjavascript\u002Freact\u002Fredux\u002Fredux-toolkit\u002Fcreate-slice","03.javascript\u002F04.react\u002F06.redux\u002F04.redux-toolkit\u002F02.create-slice",{"title":2344,"path":2345,"stem":2346},"Асинхронність з createAsyncThunk","\u002Fjavascript\u002Freact\u002Fredux\u002Fredux-toolkit\u002Fasync-thunks","03.javascript\u002F04.react\u002F06.redux\u002F04.redux-toolkit\u002F03.async-thunks",{"title":2348,"path":2349,"stem":2350},"04. Entity Adapter: Керування нормалізованим станом","\u002Fjavascript\u002Freact\u002Fredux\u002Fredux-toolkit\u002Fentity-adapter","03.javascript\u002F04.react\u002F06.redux\u002F04.redux-toolkit\u002F04.entity-adapter",{"title":2352,"icon":92,"path":2353,"stem":2354,"children":2355,"page":59},"Advanced","\u002Fjavascript\u002Freact\u002Fredux\u002Fadvanced","03.javascript\u002F04.react\u002F06.redux\u002F05.advanced",[2356,2360,2364],{"title":2357,"path":2358,"stem":2359},"Мемоізація та Селектори: Повний Гайд по Reselect","\u002Fjavascript\u002Freact\u002Fredux\u002Fadvanced\u002Fselectors-reselect","03.javascript\u002F04.react\u002F06.redux\u002F05.advanced\u002F01.selectors-reselect",{"title":2361,"path":2362,"stem":2363},"RTK Query: Архітектура Серверного Кешу","\u002Fjavascript\u002Freact\u002Fredux\u002Fadvanced\u002Frtk-query-intro","03.javascript\u002F04.react\u002F06.redux\u002F05.advanced\u002F02.rtk-query-intro",{"title":2211,"path":2365,"stem":2366},"\u002Fjavascript\u002Freact\u002Fredux\u002Fadvanced\u002Farchitecture-best-practices","03.javascript\u002F04.react\u002F06.redux\u002F05.advanced\u002F03.architecture-best-practices",{"title":2368,"icon":132,"path":2369,"stem":2370,"children":2371,"page":59},"Project Kanban","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban",[2372,2376,2380,2384,2388,2392],{"title":2373,"path":2374,"stem":2375},"Проєкт: Kanban Board (Trello Clone)","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Fproject-overview","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F01.project-overview",{"title":2377,"path":2378,"stem":2379},"Налаштування та Типізація","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Fsetup-and-types","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F02.setup-and-types",{"title":2381,"path":2382,"stem":2383},"Board Slice: Серце Дошки","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Fboard-slice","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F03.board-slice",{"title":2385,"path":2386,"stem":2387},"Логіка Drag & Drop","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Fdrag-and-drop-logic","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F04.drag-and-drop-logic",{"title":2389,"path":2390,"stem":2391},"Інтеграція з RTK Query","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Frtk-query-integration","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F05.rtk-query-integration",{"title":2393,"path":2394,"stem":2395},"Optimistic Updates","\u002Fjavascript\u002Freact\u002Fredux\u002Fproject-kanban\u002Foptimistic-updates","03.javascript\u002F04.react\u002F06.redux\u002F06.project-kanban\u002F06.optimistic-updates",{"title":2397,"icon":132,"path":2398,"stem":2399,"children":2400,"page":59},"Testing","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting","03.javascript\u002F04.react\u002F06.redux\u002F07.testing",[2401,2405,2409,2413,2417],{"title":2402,"path":2403,"stem":2404},"Тестування Redux","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting\u002Fintro-testing","03.javascript\u002F04.react\u002F06.redux\u002F07.testing\u002F01.intro-testing",{"title":2406,"path":2407,"stem":2408},"Тестування Reducers","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting\u002Ftesting-reducers","03.javascript\u002F04.react\u002F06.redux\u002F07.testing\u002F02.testing-reducers",{"title":2410,"path":2411,"stem":2412},"Тестування Селекторів","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting\u002Ftesting-selectors","03.javascript\u002F04.react\u002F06.redux\u002F07.testing\u002F03.testing-selectors",{"title":2414,"path":2415,"stem":2416},"Тестування Компонентів (Integration)","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting\u002Ftesting-components","03.javascript\u002F04.react\u002F06.redux\u002F07.testing\u002F04.testing-components",{"title":2418,"path":2419,"stem":2420},"Тестування Async Thunks","\u002Fjavascript\u002Freact\u002Fredux\u002Ftesting\u002Ftesting-thunks","03.javascript\u002F04.react\u002F06.redux\u002F07.testing\u002F05.testing-thunks",{"title":2422,"icon":132,"path":2423,"stem":2424,"children":2425},"Ui Libraries","\u002Fjavascript\u002Freact\u002Fui-libraries","03.javascript\u002F04.react\u002F07.ui-libraries\u002Findex",[2426,2428,2432,2436,2440,2444,2448],{"title":2427,"path":2423,"stem":2424},"UI Бібліотеки в React",{"title":2429,"path":2430,"stem":2431},"Вступ до UI Бібліотек: Навіщо Винаходити Велосипед Двічі?","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fintroduction-to-ui-libraries","03.javascript\u002F04.react\u002F07.ui-libraries\u002F01.introduction-to-ui-libraries",{"title":2433,"path":2434,"stem":2435},"Філософія shadcn\u002Fui: \"Not a Component Library\"","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fshadcn-philosophy","03.javascript\u002F04.react\u002F07.ui-libraries\u002F02.shadcn-philosophy",{"title":2437,"path":2438,"stem":2439},"Установка та Налаштування shadcn\u002Fui","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fshadcn-installation","03.javascript\u002F04.react\u002F07.ui-libraries\u002F03.shadcn-installation",{"title":2441,"path":2442,"stem":2443},"Базові Компоненти shadcn\u002Fui: Фундамент Інтерфейсу","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fshadcn-components-basics","03.javascript\u002F04.react\u002F07.ui-libraries\u002F04.shadcn-components-basics",{"title":2445,"path":2446,"stem":2447},"Компоненти Форм: Побудова Інтерактивних Form","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fshadcn-components-forms","03.javascript\u002F04.react\u002F07.ui-libraries\u002F05.shadcn-components-forms",{"title":2449,"path":2450,"stem":2451},"Складні Компоненти: Dialog, Dropdown, Table та Command","\u002Fjavascript\u002Freact\u002Fui-libraries\u002Fshadcn-components-advanced","03.javascript\u002F04.react\u002F07.ui-libraries\u002F06.shadcn-components-advanced",{"title":2453,"icon":2454,"path":2455,"stem":2456,"children":2457,"page":59},"TypeScript","i-devicon-typescript","\u002Fjavascript\u002Ftypescript","03.javascript\u002F05.typescript",[2458,2462,2466,2470,2474,2478,2482,2486],{"title":2459,"path":2460,"stem":2461},"TypeScript: Броня для вашого коду","\u002Fjavascript\u002Ftypescript\u002Fintro-and-basic-types","03.javascript\u002F05.typescript\u002F01.intro-and-basic-types",{"title":2463,"path":2464,"stem":2465},"Майстерність Моделювання Даних: Інтерфейси та Просунуті Типи","\u002Fjavascript\u002Ftypescript\u002Finterfaces-and-advanced-types","03.javascript\u002F05.typescript\u002F02.interfaces-and-advanced-types",{"title":2467,"path":2468,"stem":2469},"Алхімія Типів: Generics та Utility Types","\u002Fjavascript\u002Ftypescript\u002Fgenerics-and-utilities","03.javascript\u002F05.typescript\u002F03.generics-and-utilities",{"title":2471,"path":2472,"stem":2473},"Архітектура та Шаблони: Класи в TypeScript","\u002Fjavascript\u002Ftypescript\u002Fclasses-and-oop","03.javascript\u002F05.typescript\u002F04.classes-and-oop",{"title":2475,"path":2476,"stem":2477},"Продакшн та Екосистема: Advanced Config & Workflow","\u002Fjavascript\u002Ftypescript\u002Fadvanced-patterns-and-config","03.javascript\u002F05.typescript\u002F05.advanced-patterns-and-config",{"title":2479,"path":2480,"stem":2481},"TypeScript у світі React","\u002Fjavascript\u002Ftypescript\u002Freact-basics","03.javascript\u002F05.typescript\u002F06.react-basics",{"title":2483,"path":2484,"stem":2485},"React + TypeScript: Продвинуті патерни","\u002Fjavascript\u002Ftypescript\u002Freact-advanced","03.javascript\u002F05.typescript\u002F07.react-advanced",{"title":2487,"path":2488,"stem":2489},"React + TypeScript: Екосистема та бібліотеки","\u002Fjavascript\u002Ftypescript\u002Freact-ecosystem","03.javascript\u002F05.typescript\u002F08.react-ecosystem",{"title":2491,"icon":2492,"path":2493,"stem":2494,"children":2495,"page":59},"Асинхронність","i-lucide-refresh-cw","\u002Fjavascript\u002Fasync-programming","03.javascript\u002F06.async-programming",[2496,2500,2504],{"title":2497,"path":2498,"stem":2499},"Event Loop: серце асинхронності в JavaScript","\u002Fjavascript\u002Fasync-programming\u002Fevent-loop-fundamentals","03.javascript\u002F06.async-programming\u002F01.event-loop-fundamentals",{"title":2501,"path":2502,"stem":2503},"Task Queue та Microtask Queue: пріоритети виконання","\u002Fjavascript\u002Fasync-programming\u002Ftask-queues","03.javascript\u002F06.async-programming\u002F02.task-queues",{"title":2505,"path":2506,"stem":2507},"Асинхронні патерни: від Callbacks до Async\u002FAwait","\u002Fjavascript\u002Fasync-programming\u002Fasync-patterns","03.javascript\u002F06.async-programming\u002F03.async-patterns",{"title":2509,"path":2510,"stem":2511},"Atomic Design","\u002Fjavascript\u002Fatomic-design","03.javascript\u002F2.atomic-design",{"title":2513,"icon":2514,"path":2515,"stem":2516,"children":2517,"page":59},"Java","i-devicon-java","\u002Fjava","04.java",[2518,2521,2524,2528,2532,2536,2540],{"title":162,"path":2519,"stem":2520},"\u002Fjava\u002Fdata-mapper-part1","04.java\u002F01.data-mapper-part1",{"title":166,"path":2522,"stem":2523},"\u002Fjava\u002Fdata-mapper-part2","04.java\u002F02.data-mapper-part2",{"title":2525,"path":2526,"stem":2527},"Service Layer: Організація бізнес-логіки","\u002Fjava\u002Fservice-layer","04.java\u002F03.service-layer",{"title":2529,"path":2530,"stem":2531},"Rich Domain Model та State Pattern","\u002Fjava\u002Frich-domain-model","04.java\u002F04.rich-domain-model",{"title":2533,"path":2534,"stem":2535},"Патерни для складної бізнес-логіки","\u002Fjava\u002Fbusiness-logic-patterns","04.java\u002F05.business-logic-patterns",{"title":2537,"path":2538,"stem":2539},"Обробка помилок та валідація","\u002Fjava\u002Ferror-handling-validation","04.java\u002F06.error-handling-validation",{"title":2541,"path":2542,"stem":2543,"children":2544,"page":59},"Проектування баз даних","\u002Fjava\u002Fpr2","04.java\u002Fpr2",[2545,2549,2553,2557,2561,2565,2569,2573,2577,2581,2585,2589,2593,2597,2601,2605,2609,2613,2617,2621,2625,2629,2633,2637,2641,2645,2649,2653,2657,2661,2665,2669,2673,2677,2681,2685,2689],{"title":2546,"path":2547,"stem":2548},"Концептуальне моделювання: Мистецтво розуміння предметної області","\u002Fjava\u002Fpr2\u002Fconceptual-modeling","04.java\u002Fpr2\u002F01.conceptual-modeling",{"title":2550,"path":2551,"stem":2552},"Логічне моделювання: Від бізнес-ідей до структур даних","\u002Fjava\u002Fpr2\u002Flogical-modeling","04.java\u002Fpr2\u002F02.logical-modeling",{"title":2554,"path":2555,"stem":2556},"Нормалізація: Гігієна даних та боротьба з аномаліями","\u002Fjava\u002Fpr2\u002Fnormalization","04.java\u002Fpr2\u002F03.normalization",{"title":2558,"path":2559,"stem":2560},"Фізична схема: Від абстракції до DDL","\u002Fjava\u002Fpr2\u002Fphysical-schema","04.java\u002Fpr2\u002F04.physical-schema",{"title":2562,"path":2563,"stem":2564},"Архітектурна класифікація таблиць","\u002Fjava\u002Fpr2\u002Ftable-classification","04.java\u002Fpr2\u002F05.table-classification",{"title":2566,"path":2567,"stem":2568},"Database Migrations: Версіонування схеми з Flyway","\u002Fjava\u002Fpr2\u002Fdatabase-migrations","04.java\u002Fpr2\u002F06.database-migrations",{"title":2570,"path":2571,"stem":2572},"А що, якби це була не реляційна БД?","\u002Fjava\u002Fpr2\u002Fbeyond-relational","04.java\u002Fpr2\u002F07.beyond-relational",{"title":2574,"path":2575,"stem":2576},"Object-Relational Impedance Mismatch: Два світи, що не хочуть дружити","\u002Fjava\u002Fpr2\u002Fimpedance-mismatch","04.java\u002Fpr2\u002F09.impedance-mismatch",{"title":2578,"path":2579,"stem":2580},"JDBC: Перший контакт із базою даних","\u002Fjava\u002Fpr2\u002Fjdbc-fundamentals","04.java\u002Fpr2\u002F10.jdbc-fundamentals",{"title":2582,"path":2583,"stem":2584},"Якість коду: Spotless, SpotBugs та SonarQube","\u002Fjava\u002Fpr2\u002F10a.code-quality","04.java\u002Fpr2\u002F10a.code-quality",{"title":2586,"path":2587,"stem":2588},"Connection Pool: Патерн Object Pool для JDBC-з'єднань","\u002Fjava\u002Fpr2\u002Fconnection-pool","04.java\u002Fpr2\u002F11.connection-pool",{"title":2590,"path":2591,"stem":2592},"Row Data Gateway: Об'єкт як обгортка рядка таблиці","\u002Fjava\u002Fpr2\u002Frow-data-gateway","04.java\u002Fpr2\u002F12.row-data-gateway",{"title":2594,"path":2595,"stem":2596},"Table Data Gateway: Фасад таблиці як архітектурний відступ","\u002Fjava\u002Fpr2\u002Ftable-data-gateway","04.java\u002Fpr2\u002F13.table-data-gateway",{"title":2598,"path":2599,"stem":2600},"Repository + Data Mapper: Правильна шарова архітектура з JDBC","\u002Fjava\u002Fpr2\u002Frepository-data-mapper","04.java\u002Fpr2\u002F14.repository-data-mapper",{"title":2602,"path":2603,"stem":2604},"Identity Map: Кешування сутностей у рамках сесії","\u002Fjava\u002Fpr2\u002Fidentity-map","04.java\u002Fpr2\u002F15.identity-map",{"title":2606,"path":2607,"stem":2608},"Unit of Work: Відстеження змін і координація JDBC-транзакцій","\u002Fjava\u002Fpr2\u002Funit-of-work","04.java\u002Fpr2\u002F16.unit-of-work",{"title":2610,"path":2611,"stem":2612},"Strategy: Замінювані SQL-стратегії для підтримки різних СУБД","\u002Fjava\u002Fpr2\u002Fstrategy-sql","04.java\u002Fpr2\u002F17.strategy-sql",{"title":2614,"path":2615,"stem":2616},"Proxy: Lazy Loading для One-To-Many колекцій","\u002Fjava\u002Fpr2\u002Fproxy-lazy-loading","04.java\u002Fpr2\u002F18.proxy-lazy-loading",{"title":2618,"path":2619,"stem":2620},"Generic Repository через Java Reflection: анотації та динамічний SQL","\u002Fjava\u002Fpr2\u002Fgeneric-repository-reflection","04.java\u002Fpr2\u002F19.generic-repository-reflection",{"title":2622,"path":2623,"stem":2624},"Specification Pattern: Композиція бізнес-правил для складних запитів","\u002Fjava\u002Fpr2\u002Fspecification-pattern","04.java\u002Fpr2\u002F20.specification-pattern",{"title":2626,"path":2627,"stem":2628},"Розширені можливості Specification Pattern: підзапити, агрегації та гібридний підхід","\u002Fjava\u002Fpr2\u002F20a.advanced-specifications","04.java\u002Fpr2\u002F20a.advanced-specifications",{"title":2630,"path":2631,"stem":2632},"Асинхронність у JDBC: Від блокуючих викликів до CompletableFuture","\u002Fjava\u002Fpr2\u002Fasynchronous-jdbc","04.java\u002Fpr2\u002F21.asynchronous-jdbc",{"title":2634,"path":2635,"stem":2636},"Інтеграційне тестування JDBC-репозиторіїв: Embedded H2 та патерн AAA","\u002Fjava\u002Fpr2\u002Fintegration-testing-h2","04.java\u002Fpr2\u002F22.integration-testing-h2",{"title":2638,"path":2639,"stem":2640},"Testcontainers: Тестування з реальною PostgreSQL у Docker-контейнерах","\u002Fjava\u002Fpr2\u002Fintegration-testing-testcontainers","04.java\u002Fpr2\u002F23.integration-testing-testcontainers",{"title":2642,"path":2643,"stem":2644},"Google Guice: Впровадження залежностей у JavaFX-проєкті","\u002Fjava\u002Fpr2\u002Fdependency-injection-guice","04.java\u002Fpr2\u002F24.dependency-injection-guice",{"title":2646,"path":2647,"stem":2648},"JavaFX: Основи побудови графічних інтерфейсів","\u002Fjava\u002Fpr2\u002Fjavafx-fundamentals","04.java\u002Fpr2\u002F25.javafx-fundamentals",{"title":2650,"path":2651,"stem":2652},"Properties та Bindings: Реактивність у JavaFX","\u002Fjava\u002Fpr2\u002Fjavafx-properties-bindings","04.java\u002Fpr2\u002F26.javafx-properties-bindings",{"title":2654,"path":2655,"stem":2656},"MVC vs MVP vs MVVM: Еволюція архітектурних патернів UI","\u002Fjava\u002Fpr2\u002Fui-architecture-patterns","04.java\u002Fpr2\u002F27.ui-architecture-patterns",{"title":2658,"path":2659,"stem":2660},"MVVM на практиці: Побудова ViewModel","\u002Fjava\u002Fpr2\u002Fmvvm-viewmodel-implementation","04.java\u002Fpr2\u002F28.mvvm-viewmodel-implementation",{"title":2662,"path":2663,"stem":2664},"View та Controller: Зв'язування з ViewModel через FXML","\u002Fjava\u002Fpr2\u002Fmvvm-view-controller","04.java\u002Fpr2\u002F29.mvvm-view-controller",{"title":2666,"path":2667,"stem":2668},"Інтеграція MVVM з Guice: Автоматична ін'єкція залежностей","\u002Fjava\u002Fpr2\u002Fmvvm-guice-integration","04.java\u002Fpr2\u002F30.mvvm-guice-integration",{"title":2670,"path":2671,"stem":2672},"Валідація та обробка помилок у MVVM","\u002Fjava\u002Fpr2\u002Fmvvm-validation-error-handling","04.java\u002Fpr2\u002F31.mvvm-validation-error-handling",{"title":2674,"path":2675,"stem":2676},"Навігація та управління екранами у JavaFX MVVM","\u002Fjava\u002Fpr2\u002Fmvvm-navigation-screen-management","04.java\u002Fpr2\u002F32.mvvm-navigation-screen-management",{"title":2678,"path":2679,"stem":2680},"Тестування JavaFX MVVM-додатків","\u002Fjava\u002Fpr2\u002Fmvvm-testing","04.java\u002Fpr2\u002F33.mvvm-testing",{"title":2682,"path":2683,"stem":2684},"Стилізація та теми у JavaFX: CSS та User Experience","\u002Fjava\u002Fpr2\u002Fjavafx-styling-themes","04.java\u002Fpr2\u002F34.javafx-styling-themes",{"title":2686,"path":2687,"stem":2688},"AtlantaFX: Сучасні теми для JavaFX додатків","\u002Fjava\u002Fpr2\u002Fatlantafx-modern-themes","04.java\u002Fpr2\u002F35.atlantafx-modern-themes",{"title":2690,"path":2691,"stem":2692},"Пакування та розповсюдження JavaFX-додатків","\u002Fjava\u002Fpr2\u002Fjar-packaging-distribution","04.java\u002Fpr2\u002F36.jar-packaging-distribution",{"title":2694,"icon":2695,"path":2696,"stem":2697,"children":2698,"page":59},"Python","i-devicon-python","\u002Fpython","05.python",[2699,2703,2706,2710,2714,2718,2722,2726,2730,2734,2738,2742,2746,2750,2754,2815],{"title":2700,"path":2701,"stem":2702},"Модулі, Пакети та Віртуальні Середовища","\u002Fpython\u002Fmodules-packages-venv","05.python\u002F00.modules-packages-venv",{"title":71,"path":2704,"stem":2705},"\u002Fpython\u002Fclasses-objects","05.python\u002F01.classes-objects",{"title":2707,"path":2708,"stem":2709},"Інкапсуляція, Керування Доступом та Властивості","\u002Fpython\u002Fencapsulation","05.python\u002F02.encapsulation",{"title":2711,"path":2712,"stem":2713},"Наслідування, MRO та суперсила super()","\u002Fpython\u002Finheritance-mro","05.python\u002F03.inheritance-mro",{"title":2715,"path":2716,"stem":2717},"Абстракція — ABC проти Статичних Протоколів (PEP 544)","\u002Fpython\u002Fabstraction-protocols","05.python\u002F04.abstraction-protocols",{"title":2719,"path":2720,"stem":2721},"Магічні методи (Dunder) та Емуляція протоколів","\u002Fpython\u002Fdunder-methods","05.python\u002F05.dunder-methods",{"title":2723,"path":2724,"stem":2725},"Декоратори та Керування життєвим циклом методів","\u002Fpython\u002Fdecorators-static-class","05.python\u002F06.decorators-static-class",{"title":2727,"path":2728,"stem":2729},"Дескриптори — Магія доступу до атрибутів","\u002Fpython\u002Fdescriptors","05.python\u002F07.descriptors",{"title":2731,"path":2732,"stem":2733},"Метакласи — Динамічне створення класів під капотом CPython","\u002Fpython\u002Fmetaclasses","05.python\u002F08.metaclasses",{"title":2735,"path":2736,"stem":2737},"Dataclasses, NamedTuple та сучасні контейнери Python","\u002Fpython\u002Fmodern-containers","05.python\u002F09.modern-containers",{"title":2739,"path":2740,"stem":2741},"GIL та модель конкурентності CPython — фундамент перед потоками і процесами","\u002Fpython\u002Fgil-concurrency-intro","05.python\u002F11.gil-concurrency-intro",{"title":2743,"path":2744,"stem":2745},"Threading — конкурентність для I\u002FO-bound задач","\u002Fpython\u002Fthreading","05.python\u002F12.threading",{"title":2747,"path":2748,"stem":2749},"Multiprocessing — справжній паралелізм для CPU-bound задач","\u002Fpython\u002Fmultiprocessing","05.python\u002F13.multiprocessing",{"title":2751,"path":2752,"stem":2753},"asyncio — кооперативна конкурентність та event loop","\u002Fpython\u002Fasyncio","05.python\u002F14.asyncio",{"title":2755,"icon":92,"path":2756,"stem":2757,"children":2758,"page":59},"FastAPI","\u002Fpython\u002Ffastapi","05.python\u002Ffastapi",[2759,2763,2767,2771,2775,2779,2783,2787,2791,2795,2799,2803,2807,2811],{"title":2760,"path":2761,"stem":2762},"Глибокий Typing та Pydantic v2 — від анотацій до валідації","\u002Fpython\u002Ffastapi\u002Ftyping-pydantic","05.python\u002Ffastapi\u002F15.typing-pydantic",{"title":2764,"path":2765,"stem":2766},"WSGI, ASGI та Python Web-екосистема","\u002Fpython\u002Ffastapi\u002Fwsgi-asgi-ecosystem","05.python\u002Ffastapi\u002F16.wsgi-asgi-ecosystem",{"title":2768,"path":2769,"stem":2770},"FastAPI: Перший додаток, Uvicorn та OpenAPI","\u002Fpython\u002Ffastapi\u002Ffastapi-intro","05.python\u002Ffastapi\u002F17.fastapi-intro",{"title":2772,"path":2773,"stem":2774},"Маршрутизація, параметри запитів та APIRouter","\u002Fpython\u002Ffastapi\u002Ffastapi-routing-params","05.python\u002Ffastapi\u002F18.fastapi-routing-params",{"title":2776,"path":2777,"stem":2778},"Pydantic v2 у FastAPI — схеми, валідація та серіалізація","\u002Fpython\u002Ffastapi\u002Ffastapi-pydantic-schemas","05.python\u002Ffastapi\u002F19.fastapi-pydantic-schemas",{"title":2780,"path":2781,"stem":2782},"Dependency Injection — серце архітектури FastAPI","\u002Fpython\u002Ffastapi\u002Ffastapi-dependency-injection","05.python\u002Ffastapi\u002F20.fastapi-dependency-injection",{"title":2784,"path":2785,"stem":2786},"Обробка помилок, Middleware та CORS у FastAPI","\u002Fpython\u002Ffastapi\u002Ffastapi-errors-middleware","05.python\u002Ffastapi\u002F21.fastapi-errors-middleware",{"title":2788,"path":2789,"stem":2790},"SQLAlchemy 2.0 — ORM, Core та Async Engine","\u002Fpython\u002Ffastapi\u002Fsqlalchemy-orm","05.python\u002Ffastapi\u002F22.sqlalchemy-orm",{"title":2792,"path":2793,"stem":2794},"Alembic — міграції бази даних","\u002Fpython\u002Ffastapi\u002Falembic-migrations","05.python\u002Ffastapi\u002F23.alembic-migrations",{"title":2796,"path":2797,"stem":2798},"Repository Pattern та Clean Architecture у FastAPI","\u002Fpython\u002Ffastapi\u002Ffastapi-repository-clean-arch","05.python\u002Ffastapi\u002F24.fastapi-repository-clean-arch",{"title":2800,"path":2801,"stem":2802},"Автентифікація та авторизація — JWT, OAuth2, RBAC","\u002Fpython\u002Ffastapi\u002Ffastapi-auth-security","05.python\u002Ffastapi\u002F25.fastapi-auth-security",{"title":2804,"path":2805,"stem":2806},"Тестування FastAPI — pytest, httpx, fixtures","\u002Fpython\u002Ffastapi\u002Ffastapi-testing","05.python\u002Ffastapi\u002F26.fastapi-testing",{"title":2808,"path":2809,"stem":2810},"Async на повну — Background Tasks, WebSockets, SSE та Celery","\u002Fpython\u002Ffastapi\u002Ffastapi-async-advanced","05.python\u002Ffastapi\u002F27.fastapi-async-advanced",{"title":2812,"path":2813,"stem":2814},"Deployment — Docker, CI\u002FCD, Monitoring","\u002Fpython\u002Ffastapi\u002Ffastapi-deployment","05.python\u002Ffastapi\u002F28.fastapi-deployment",{"title":2816,"path":2817,"stem":2818},"[object Object]","\u002Fpython\u002Foop-plan","05.python\u002Foop-plan",{"title":2820,"icon":2821,"path":2822,"stem":2823,"children":2824,"page":59},"Бази даних","i-lucide-database","\u002Fdatabases","06.databases",[2825,2855,2878,2915,2944,2962,2996,3008,3017],{"title":2826,"icon":2827,"path":2828,"stem":2829,"children":2830,"page":59},"Intro","i-lucide-play","\u002Fdatabases\u002Fintro","06.databases\u002F01.intro",[2831,2835,2839,2843,2847,2851],{"title":2832,"path":2833,"stem":2834},"Введення в теорію баз даних","\u002Fdatabases\u002Fintro\u002Fintroduction-to-databases","06.databases\u002F01.intro\u002F01.introduction-to-databases",{"title":2836,"path":2837,"stem":2838},"Реляційна модель даних","\u002Fdatabases\u002Fintro\u002Frelational-model-theory","06.databases\u002F01.intro\u002F02.relational-model-theory",{"title":2840,"path":2841,"stem":2842},"ER-моделювання","\u002Fdatabases\u002Fintro\u002Fer-modeling","06.databases\u002F01.intro\u002F03.er-modeling",{"title":2844,"path":2845,"stem":2846},"Логічне проектування БД","\u002Fdatabases\u002Fintro\u002Flogical-schema","06.databases\u002F01.intro\u002F04.logical-schema",{"title":2848,"path":2849,"stem":2850},"Класифікація таблиць","\u002Fdatabases\u002Fintro\u002Ftable-classification","06.databases\u002F01.intro\u002F05.table-classification",{"title":2852,"path":2853,"stem":2854},"PlantUML для баз даних","\u002Fdatabases\u002Fintro\u002Fplantuml-diagrams","06.databases\u002F01.intro\u002F06.plantuml-diagrams",{"title":2856,"icon":2821,"path":2857,"stem":2858,"children":2859,"page":59},"MS SQL Server Start","\u002Fdatabases\u002Fms-sql-server-start","06.databases\u002F02.ms-sql-server-start",[2860,2864,2870,2874],{"title":2861,"path":2862,"stem":2863},"Типи даних у MS SQL Server","\u002Fdatabases\u002Fms-sql-server-start\u002Fdata-types","06.databases\u002F02.ms-sql-server-start\u002F01.data-types",{"title":2865,"path":2866,"stem":2867,"children":2868},"Індекси у MS SQL Server","\u002Fdatabases\u002Fms-sql-server-start\u002Fsql-indexes","06.databases\u002F02.ms-sql-server-start\u002F02.sql-indexes",[2869],{"title":2865,"path":2866,"stem":2867},{"title":2871,"path":2872,"stem":2873},"Системні бази даних MS SQL Server","\u002Fdatabases\u002Fms-sql-server-start\u002Fsystem-databases","06.databases\u002F02.ms-sql-server-start\u002F03.system-databases",{"title":2875,"path":2876,"stem":2877},"Огляд мови SQL та запитів","\u002Fdatabases\u002Fms-sql-server-start\u002Fsql-queries-overview","06.databases\u002F02.ms-sql-server-start\u002F04.sql-queries-overview",{"title":2879,"icon":2821,"path":2880,"stem":2881,"children":2882,"page":59},"SQL","\u002Fdatabases\u002Fsql","06.databases\u002F03.sql",[2883,2887,2891,2895,2899,2903,2907,2911],{"title":2884,"path":2885,"stem":2886},"Налаштування демонстраційної бази даних","\u002Fdatabases\u002Fsql\u002Fsample-database-setup","06.databases\u002F03.sql\u002F00.sample-database-setup",{"title":2888,"path":2889,"stem":2890},"DDL - Створення таблиць (CREATE TABLE)","\u002Fdatabases\u002Fsql\u002Fddl-create-table","06.databases\u002F03.sql\u002F01.ddl-create-table",{"title":2892,"path":2893,"stem":2894},"DDL - Зміна та видалення таблиць (ALTER, DROP)","\u002Fdatabases\u002Fsql\u002Fddl-alter-drop-table","06.databases\u002F03.sql\u002F02.ddl-alter-drop-table",{"title":2896,"path":2897,"stem":2898},"SELECT запити - Основи","\u002Fdatabases\u002Fsql\u002Fselect-queries-fundamentals","06.databases\u002F03.sql\u002F03.select-queries-fundamentals",{"title":2900,"path":2901,"stem":2902},"SELECT запити - Розширені можливості","\u002Fdatabases\u002Fsql\u002Fselect-queries-advanced","06.databases\u002F03.sql\u002F04.select-queries-advanced",{"title":2904,"path":2905,"stem":2906},"INSERT запити - Додавання даних","\u002Fdatabases\u002Fsql\u002Finsert-queries","06.databases\u002F03.sql\u002F05.insert-queries",{"title":2908,"path":2909,"stem":2910},"UPDATE та DELETE запити","\u002Fdatabases\u002Fsql\u002Fupdate-delete-queries","06.databases\u002F03.sql\u002F06.update-delete-queries",{"title":2912,"path":2913,"stem":2914},"Транзакції в SQL","\u002Fdatabases\u002Fsql\u002Ftransactions","06.databases\u002F03.sql\u002F07.transactions",{"title":2916,"icon":2821,"path":2917,"stem":2918,"children":2919,"page":59},"Multi Table Databases","\u002Fdatabases\u002Fmulti-table-databases","06.databases\u002F04.multi-table-databases",[2920,2924,2928,2932,2936,2940],{"title":2921,"path":2922,"stem":2923},"Зв'язки та нормалізація БД","\u002Fdatabases\u002Fmulti-table-databases\u002Frelationships-and-normalization","06.databases\u002F04.multi-table-databases\u002F00.relationships-and-normalization",{"title":2925,"path":2926,"stem":2927},"INNER JOIN - З'єднання таблиць","\u002Fdatabases\u002Fmulti-table-databases\u002Finner-join","06.databases\u002F04.multi-table-databases\u002F01.inner-join",{"title":2929,"path":2930,"stem":2931},"OUTER JOINs - LEFT, RIGHT, FULL","\u002Fdatabases\u002Fmulti-table-databases\u002Fouter-joins","06.databases\u002F04.multi-table-databases\u002F02.outer-joins",{"title":2933,"path":2934,"stem":2935},"CROSS та SELF JOINs","\u002Fdatabases\u002Fmulti-table-databases\u002Fcross-self-joins","06.databases\u002F04.multi-table-databases\u002F03.cross-self-joins",{"title":2937,"path":2938,"stem":2939},"Підзапити (Subqueries)","\u002Fdatabases\u002Fmulti-table-databases\u002Fsubqueries","06.databases\u002F04.multi-table-databases\u002F04.subqueries",{"title":2941,"path":2942,"stem":2943},"Агрегації з JOIN","\u002Fdatabases\u002Fmulti-table-databases\u002Faggregations-with-joins","06.databases\u002F04.multi-table-databases\u002F05.aggregations-with-joins",{"title":2945,"icon":2946,"path":2947,"stem":2948,"children":2949,"page":59},"Aggregate Functions","i-lucide-calculator","\u002Fdatabases\u002Faggregate-functions","06.databases\u002F05.aggregate-functions",[2950,2954,2958],{"title":2951,"path":2952,"stem":2953},"Функції агрегування в MS SQL Server","\u002Fdatabases\u002Faggregate-functions\u002Fintroduction-aggregate-functions","06.databases\u002F05.aggregate-functions\u002F01.introduction-aggregate-functions",{"title":2955,"path":2956,"stem":2957},"Групування даних в MS SQL Server","\u002Fdatabases\u002Faggregate-functions\u002Fgrouping-data","06.databases\u002F05.aggregate-functions\u002F02.grouping-data",{"title":2959,"path":2960,"stem":2961},"Підзапити з агрегатними функціями","\u002Fdatabases\u002Faggregate-functions\u002Fsubqueries-aggregates","06.databases\u002F05.aggregate-functions\u002F03.subqueries-aggregates",{"title":2963,"icon":2964,"path":2965,"stem":2966,"children":2967,"page":59},"Тригери та зберігаємі процедури","i-lucide-database-zap","\u002Fdatabases\u002Ftriggers-stored-procedures","06.databases\u002F07.triggers-stored-procedures",[2968,2972,2976,2980,2984,2988,2992],{"title":2969,"path":2970,"stem":2971},"DML-тригери","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Fdml-triggers","06.databases\u002F07.triggers-stored-procedures\u002F01.dml-triggers",{"title":2973,"path":2974,"stem":2975},"DDL-тригери","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Fddl-triggers","06.databases\u002F07.triggers-stored-procedures\u002F02.ddl-triggers",{"title":2977,"path":2978,"stem":2979},"Transact-SQL розширення","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Ftransact-sql-extensions","06.databases\u002F07.triggers-stored-procedures\u002F03.transact-sql-extensions",{"title":2981,"path":2982,"stem":2983},"Транзакції","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Ftransactions","06.databases\u002F07.triggers-stored-procedures\u002F04.transactions",{"title":2985,"path":2986,"stem":2987},"Зберігаємі процедури","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Fstored-procedures","06.databases\u002F07.triggers-stored-procedures\u002F05.stored-procedures",{"title":2989,"path":2990,"stem":2991},"Користувацькі функції","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Fuser-defined-functions","06.databases\u002F07.triggers-stored-procedures\u002F06.user-defined-functions",{"title":2993,"path":2994,"stem":2995},"Безпека баз даних","\u002Fdatabases\u002Ftriggers-stored-procedures\u002Fsecurity","06.databases\u002F07.triggers-stored-procedures\u002F08.security",{"title":2993,"icon":793,"path":2997,"stem":2998,"children":2999,"page":59},"\u002Fdatabases\u002Fsecurity","06.databases\u002F08.security",[3000,3004],{"title":3001,"path":3002,"stem":3003},"Вступ до безпеки баз даних","\u002Fdatabases\u002Fsecurity\u002Fintroduction","06.databases\u002F08.security\u002F01.introduction",{"title":3005,"path":3006,"stem":3007},"Системні представлення та метадані","\u002Fdatabases\u002Fsecurity\u002Fsystem-views","06.databases\u002F08.security\u002F02.system-views",{"title":3009,"icon":3010,"path":3011,"stem":3012,"children":3013,"page":59},"Резервне копіювання та відновлення","i-lucide-database-backup","\u002Fdatabases\u002Fbackup-recovery","06.databases\u002F09.backup-recovery",[3014],{"title":3009,"path":3015,"stem":3016},"\u002Fdatabases\u002Fbackup-recovery\u002Fbackup-restore","06.databases\u002F09.backup-recovery\u002F01.backup-restore",{"title":3018,"icon":3019,"path":3020,"stem":3021,"children":3022,"page":59},"Повнотекстовий пошук","i-lucide-search","\u002Fdatabases\u002Ffull-text-search","06.databases\u002F10.full-text-search",[3023],{"title":3018,"path":3024,"stem":3025},"\u002Fdatabases\u002Ffull-text-search\u002Ffull-text-search","06.databases\u002F10.full-text-search\u002F01.full-text-search",{"title":3027,"icon":3028,"path":3029,"stem":3030,"children":3031,"page":59},"Tools","i-lucide-wrench","\u002Ftools","07.tools",[3032,3108],{"title":3033,"icon":3034,"path":3035,"stem":3036,"children":3037},"Docker","i-simple-icons-docker","\u002Ftools\u002Fdocker","07.tools\u002F01.docker\u002Findex",[3038,3040,3044,3048,3052,3056,3060,3064,3068,3072,3076,3080,3084,3088,3092,3096,3100,3104],{"title":3039,"path":3035,"stem":3036},"Docker: від нуля до production",{"title":3041,"path":3042,"stem":3043},"Контейнеризація — від проблеми до рішення","\u002Ftools\u002Fdocker\u002Fcontainerization-concept","07.tools\u002F01.docker\u002F01.containerization-concept",{"title":3045,"path":3046,"stem":3047},"Docker — що це і навіщо?","\u002Ftools\u002Fdocker\u002Fdocker-what-and-why","07.tools\u002F01.docker\u002F02.docker-what-and-why",{"title":3049,"path":3050,"stem":3051},"Архітектура Docker Engine","\u002Ftools\u002Fdocker\u002Fdocker-architecture","07.tools\u002F01.docker\u002F03.docker-architecture",{"title":3053,"path":3054,"stem":3055},"Встановлення Docker","\u002Ftools\u002Fdocker\u002Finstallation","07.tools\u002F01.docker\u002F04.installation",{"title":3057,"path":3058,"stem":3059},"Перший контейнер — docker run","\u002Ftools\u002Fdocker\u002Ffirst-container","07.tools\u002F01.docker\u002F05.first-container",{"title":3061,"path":3062,"stem":3063},"Життєвий цикл контейнера","\u002Ftools\u002Fdocker\u002Fcontainer-lifecycle","07.tools\u002F01.docker\u002F06.container-lifecycle",{"title":3065,"path":3066,"stem":3067},"Docker Images — фундаментальні концепції","\u002Ftools\u002Fdocker\u002Fdocker-images-fundamentals","07.tools\u002F01.docker\u002F07.docker-images-fundamentals",{"title":3069,"path":3070,"stem":3071},"Dockerfile — основи","\u002Ftools\u002Fdocker\u002Fdockerfile-basics","07.tools\u002F01.docker\u002F08.dockerfile-basics",{"title":3073,"path":3074,"stem":3075},"Dockerfile — просунуті техніки","\u002Ftools\u002Fdocker\u002Fdockerfile-advanced","07.tools\u002F01.docker\u002F09.dockerfile-advanced",{"title":3077,"path":3078,"stem":3079},"Build Context та кешування шарів","\u002Ftools\u002Fdocker\u002Fbuild-context-and-cache","07.tools\u002F01.docker\u002F10.build-context-and-cache",{"title":3081,"path":3082,"stem":3083},"Реєстри Docker-образів","\u002Ftools\u002Fdocker\u002Fimage-registries","07.tools\u002F01.docker\u002F11.image-registries",{"title":3085,"path":3086,"stem":3087},"Контейнеризація .NET додатків","\u002Ftools\u002Fdocker\u002Fdotnet-containerization","07.tools\u002F01.docker\u002F12.dotnet-containerization",{"title":3089,"path":3090,"stem":3091},"Томи та збереження даних","\u002Ftools\u002Fdocker\u002Fvolumes-and-data","07.tools\u002F01.docker\u002F13.volumes-and-data",{"title":3093,"path":3094,"stem":3095},"Основи мережі в Docker","\u002Ftools\u002Fdocker\u002Fnetworking-basics","07.tools\u002F01.docker\u002F14.networking-basics",{"title":3097,"path":3098,"stem":3099},"Змінні оточення та конфігурація","\u002Ftools\u002Fdocker\u002Fenvironment-and-configuration","07.tools\u002F01.docker\u002F15.environment-and-configuration",{"title":3101,"path":3102,"stem":3103},"Docker Compose — оркестрація контейнерів","\u002Ftools\u002Fdocker\u002Fdocker-compose-basics","07.tools\u002F01.docker\u002F16.docker-compose-basics",{"title":3105,"path":3106,"stem":3107},"Docker Compose — Multi-Service застосунки","\u002Ftools\u002Fdocker\u002Fcompose-multi-service","07.tools\u002F01.docker\u002F17.compose-multi-service",{"title":3109,"icon":3110,"path":3111,"stem":3112,"children":3113},"Kubernetes","simple-icons:kubernetes","\u002Ftools\u002Fkubernetes","07.tools\u002F02.kubernetes\u002Findex",[3114,3116,3120,3124,3128,3132,3136,3140,3144],{"title":3115,"path":3111,"stem":3112},"Kubernetes: від розробки до production",{"title":3117,"path":3118,"stem":3119},"Kubernetes — коли Docker Compose більше не вистачає","\u002Ftools\u002Fkubernetes\u002Fwhy-kubernetes","07.tools\u002F02.kubernetes\u002F01.why-kubernetes",{"title":3121,"path":3122,"stem":3123},"Архітектура Kubernetes — анатомія кластера","\u002Ftools\u002Fkubernetes\u002Fkubernetes-architecture","07.tools\u002F02.kubernetes\u002F02.kubernetes-architecture",{"title":3125,"path":3126,"stem":3127},"Локальне середовище — minikube, kind та k3s","\u002Ftools\u002Fkubernetes\u002Flocal-environment","07.tools\u002F02.kubernetes\u002F03.local-environment",{"title":3129,"path":3130,"stem":3131},"Pod — атомарна одиниця Kubernetes","\u002Ftools\u002Fkubernetes\u002Fpods-and-containers","07.tools\u002F02.kubernetes\u002F04.pods-and-containers",{"title":3133,"path":3134,"stem":3135},"Патерни використання Pod","\u002Ftools\u002Fkubernetes\u002Fpod-patterns","07.tools\u002F02.kubernetes\u002F05.pod-patterns",{"title":3137,"path":3138,"stem":3139},"Deployment — декларативне управління Pod","\u002Ftools\u002Fkubernetes\u002Fdeployment-basics","07.tools\u002F02.kubernetes\u002F06.deployment-basics",{"title":3141,"path":3142,"stem":3143},"Rolling Updates та управління життєвим циклом Deployment","\u002Ftools\u002Fkubernetes\u002Fdeployment-rolling-updates","07.tools\u002F02.kubernetes\u002F07.deployment-rolling-updates",{"title":3145,"path":3146,"stem":3147},"Service — мережева абстракція для Pod","\u002Ftools\u002Fkubernetes\u002Fservices-networking","07.tools\u002F02.kubernetes\u002F08.services-networking",{"title":3149,"icon":3150,"path":3151,"stem":3152,"children":3153,"page":59},"Software Engineering","i-lucide-code-2","\u002Fsoftware-engineering","09.software-engineering",[3154,3158,3162,3166,3170,3174,3178,3182,3186,3190,3194],{"title":3155,"path":3156,"stem":3157},"1. Аналіз предметної області. Експертні знання та складність","\u002Fsoftware-engineering\u002Fintro-subdomains","09.software-engineering\u002F01.intro-subdomains",{"title":3159,"path":3160,"stem":3161},"2. Обмежені контексти. Інтеграція обмежених контекстів","\u002Fsoftware-engineering\u002Fintegrating-limited-contexts","09.software-engineering\u002F02.integrating-limited-contexts",{"title":3163,"path":3164,"stem":3165},"3. Реалізація простої бізнес-логіки","\u002Fsoftware-engineering\u002Fsimple","09.software-engineering\u002F03.simple",{"title":3167,"path":3168,"stem":3169},"4. Опрацювання складної бізнес-логіки","\u002Fsoftware-engineering\u002Fcomplex-business-logic","09.software-engineering\u002F04.complex-business-logic",{"title":3171,"path":3172,"stem":3173},"5. Моделювання фактора часу. Подієво-орієнтована архітектура.","\u002Fsoftware-engineering\u002Fmodelling-the-time-factor","09.software-engineering\u002F05.modelling-the-time-factor",{"title":3175,"path":3176,"stem":3177},"6. Архітектурні патерни","\u002Fsoftware-engineering\u002Farchitectural-patterns","09.software-engineering\u002F06.architectural-patterns",{"title":3179,"path":3180,"stem":3181},"Паттерни взаємодії","\u002Fsoftware-engineering\u002Fpatterns-of-interaction","09.software-engineering\u002F07.patterns-of-interaction",{"title":3183,"path":3184,"stem":3185},"Евристика проєктування","\u002Fsoftware-engineering\u002Fdesign-heuristics","09.software-engineering\u002F08.design-heuristics",{"title":3187,"path":3188,"stem":3189},"Еволюція проєктних рішень","\u002Fsoftware-engineering\u002Fevolution-of-design-solutions","09.software-engineering\u002F09.evolution-of-design-solutions",{"title":3191,"path":3192,"stem":3193},"EventStorming","\u002Fsoftware-engineering\u002Feventstorming","09.software-engineering\u002F10.eventstorming",{"title":3195,"path":3196,"stem":3197},"DDD на практиці","\u002Fsoftware-engineering\u002Fddd-in-practice","09.software-engineering\u002F11.ddd-in-practice",{"title":3199,"icon":943,"path":3200,"stem":3201,"children":3202,"page":59},"DDD","\u002Fddd","10.ddd",[3203,3207,3211,3215,3219,3223,3227,3231,3235,3239,3243,3247,3251],{"title":3204,"path":3205,"stem":3206},"Аналіз предметної області","\u002Fddd\u002Fdomain-analysis","10.ddd\u002F01.domain-analysis",{"title":3208,"path":3209,"stem":3210},"Експертні знання про предметну область","\u002Fddd\u002Fdomain-expert-knowledge","10.ddd\u002F02.domain-expert-knowledge",{"title":3212,"path":3213,"stem":3214},"Як осмислити складність предметної області","\u002Fddd\u002Fmanaging-domain-complexity","10.ddd\u002F03.managing-domain-complexity",{"title":3216,"path":3217,"stem":3218},"Інтеграція обмежених контекстів","\u002Fddd\u002Fbounded-context-integration","10.ddd\u002F04.bounded-context-integration",{"title":3220,"path":3221,"stem":3222},"Реалізація простої бізнес-логіки","\u002Fddd\u002Fsimple-business-logic","10.ddd\u002F05.simple-business-logic",{"title":3224,"path":3225,"stem":3226},"Обробка складної бізнес-логіки","\u002Fddd\u002Fcomplex-business-logic","10.ddd\u002F06.complex-business-logic",{"title":3228,"path":3229,"stem":3230},"Моделювання фактора часу","\u002Fddd\u002Ftime-modeling","10.ddd\u002F07.time-modeling",{"title":3232,"path":3233,"stem":3234},"Глава 8. Архітектурні Патерни","\u002Fddd\u002Farchitectural-patterns","10.ddd\u002F08.architectural-patterns",{"title":3236,"path":3237,"stem":3238},"Глава 9. Патерни Взаємодії","\u002Fddd\u002Finteraction-patterns","10.ddd\u002F09.interaction-patterns",{"title":3240,"path":3241,"stem":3242},"Глава 10. Проектні Евристики","\u002Fddd\u002Fdesign-heuristics","10.ddd\u002F10.design-heuristics",{"title":3244,"path":3245,"stem":3246},"Глава 11. Еволюція Проектних Рішень","\u002Fddd\u002Fevolution-of-design-decisions","10.ddd\u002F11.evolution-of-design-decisions",{"title":3248,"path":3249,"stem":3250},"Глава 12. EventStorming","\u002Fddd\u002Fevent-storming","10.ddd\u002F12.event-storming",{"title":3252,"path":3253,"stem":3254},"Глава 13. DDD на Практиці","\u002Fddd\u002Fddd-in-practice","10.ddd\u002F13.ddd-in-practice",{"title":3256,"icon":3257,"path":3258,"stem":3259,"children":3260,"page":59},"Media Streaming","i-lucide-video","\u002Fmedia-streaming","11.media-streaming",[3261,3265,3269,3273,3277,3281,3285],{"title":3262,"path":3263,"stem":3264},"01. Магія Стрімінгу: Що відбувається, коли ви натискаєте \"Play\"","\u002Fmedia-streaming\u002Fintroduction","11.media-streaming\u002F01.introduction",{"title":3266,"path":3267,"stem":3268},"02. Анатомія Медіа: Кодеки, Контейнери та Стиснення","\u002Fmedia-streaming\u002Faudio-video-anatomy","11.media-streaming\u002F02.audio-video-anatomy",{"title":3270,"path":3271,"stem":3272},"03. The Gym: FFmpeg Deep Dive","\u002Fmedia-streaming\u002Fffmpeg-gym","11.media-streaming\u002F03.ffmpeg-gym",{"title":3274,"path":3275,"stem":3276},"04. HLS Protocol: HTTP Live Streaming у Деталях","\u002Fmedia-streaming\u002Fhls-protocol","11.media-streaming\u002F04.hls-protocol",{"title":3278,"path":3279,"stem":3280},"05. DASH Protocol: Відкритий Стандарт","\u002Fmedia-streaming\u002Fdash-protocol","11.media-streaming\u002F05.dash-protocol",{"title":3282,"path":3283,"stem":3284},"06. Масштабування: CDN та Adaptive Bitrate","\u002Fmedia-streaming\u002Fcdn-and-adaptive-bitrate","11.media-streaming\u002F06.cdn-and-adaptive-bitrate",{"title":3286,"path":3287,"stem":3288},"07. Війна із Затримкою (Latency)","\u002Fmedia-streaming\u002Frealtime-latency","11.media-streaming\u002F07.realtime-latency",{"title":3290,"icon":3291,"path":3292,"stem":3293,"children":3294,"page":59},"HTML & CSS","i-devicon-html5","\u002Fhtml-css","12.html-css",[3295,3299,3303,3307,3311,3315,3319,3323,3327,3331,3335,3339,3343,3347,3351,3355,3359,3363,3367,3371,3375,3379,3383,3387,3391,3395,3399,3403,3407,3411],{"title":3296,"path":3297,"stem":3298},"Вступ до HTML. Структура документа","\u002Fhtml-css\u002Fintro-html-structure","12.html-css\u002F01.intro-html-structure",{"title":3300,"path":3301,"stem":3302},"Форматування тексту в HTML","\u002Fhtml-css\u002Fhtml-text-formatting","12.html-css\u002F02.html-text-formatting",{"title":3304,"path":3305,"stem":3306},"Посилання та зображення в HTML","\u002Fhtml-css\u002Fhtml-links-images","12.html-css\u002F03.html-links-images",{"title":3308,"path":3309,"stem":3310},"Списки та таблиці в HTML","\u002Fhtml-css\u002Fhtml-lists-tables","12.html-css\u002F04.html-lists-tables",{"title":3312,"path":3313,"stem":3314},"Форми в HTML","\u002Fhtml-css\u002Fhtml-forms","12.html-css\u002F05.html-forms",{"title":3316,"path":3317,"stem":3318},"Семантичні елементи HTML5","\u002Fhtml-css\u002Fhtml-semantic-elements","12.html-css\u002F06.html-semantic-elements",{"title":3320,"path":3321,"stem":3322},"Мультимедіа та розширені елементи HTML","\u002Fhtml-css\u002Fhtml-multimedia-advanced","12.html-css\u002F07.html-multimedia-advanced",{"title":3324,"path":3325,"stem":3326},"Мікророзмітка та SEO в HTML","\u002Fhtml-css\u002Fhtml-microdata-seo","12.html-css\u002F08.html-microdata-seo",{"title":3328,"path":3329,"stem":3330},"Вступ до CSS. Селектори та специфічність","\u002Fhtml-css\u002Fcss-intro-selectors","12.html-css\u002F09.css-intro-selectors",{"title":3332,"path":3333,"stem":3334},"Блокова модель CSS. Відступи. Box Sizing","\u002Fhtml-css\u002Fcss-box-model","12.html-css\u002F10.css-box-model",{"title":3336,"path":3337,"stem":3338},"Розміри у CSS: повний довідник одиниць і ключових слів","\u002Fhtml-css\u002F10a.css-sizing","12.html-css\u002F10a.css-sizing",{"title":3340,"path":3341,"stem":3342},"Типографіка в CSS. Шрифти та текст","\u002Fhtml-css\u002Fcss-typography","12.html-css\u002F11.css-typography",{"title":3344,"path":3345,"stem":3346},"Кольори та фони в CSS","\u002Fhtml-css\u002Fcss-colors-backgrounds","12.html-css\u002F12.css-colors-backgrounds",{"title":3348,"path":3349,"stem":3350},"Тіні та фільтри в CSS","\u002Fhtml-css\u002F12b.css-shadows-filters","12.html-css\u002F12b.css-shadows-filters",{"title":3352,"path":3353,"stem":3354},"CSS Flexbox: Фундамент гнучких макетів","\u002Fhtml-css\u002Fcss-flexbox-fundamentals","12.html-css\u002F13.css-flexbox-fundamentals",{"title":3356,"path":3357,"stem":3358},"CSS Flexbox: Вирівнювання та Позиціонування","\u002Fhtml-css\u002Fcss-flexbox-alignment-sizing-and-patterns","12.html-css\u002F14.css-flexbox-alignment-sizing-and-patterns",{"title":3360,"path":3361,"stem":3362},"CSS Grid. Двовимірний макет. Частина 1","\u002Fhtml-css\u002Fcss-layout-grid","12.html-css\u002F15.css-layout-grid",{"title":3364,"path":3365,"stem":3366},"CSS Grid. Двовимірний макет. Частина 2","\u002Fhtml-css\u002Fcss-layout-grid-advanced","12.html-css\u002F16.css-layout-grid-advanced",{"title":3368,"path":3369,"stem":3370},"Позиціонування в CSS. Z-index. Stacking Context","\u002Fhtml-css\u002Fcss-positioning","12.html-css\u002F17.css-positioning",{"title":3372,"path":3373,"stem":3374},"CSS Анімації та Переходи","\u002Fhtml-css\u002Fcss-animations-transitions","12.html-css\u002F18.css-animations-transitions",{"title":3376,"path":3377,"stem":3378},"Адаптивний дизайн. Media Queries. Частина 1","\u002Fhtml-css\u002Fcss-responsive-media-queries","12.html-css\u002F19.css-responsive-media-queries",{"title":3380,"path":3381,"stem":3382},"Адаптивний дизайн. Частина 2: clamp(), Container Queries, @layer","\u002Fhtml-css\u002Fcss-responsive-advanced","12.html-css\u002F20.css-responsive-advanced",{"title":3384,"path":3385,"stem":3386},"CSS Custom Properties. Методології. Сучасний CSS","\u002Fhtml-css\u002Fcss-variables-methodologies","12.html-css\u002F21.css-variables-methodologies",{"title":3388,"path":3389,"stem":3390},"Сучасний CSS 2023–2025: Нові можливості","\u002Fhtml-css\u002Fcss-modern-features","12.html-css\u002F22.css-modern-features",{"title":3392,"path":3393,"stem":3394},"CSS Nesting, @layer, @scope та @property: нативний препроцесор","\u002Fhtml-css\u002F22a.css-nesting-modern-syntax","12.html-css\u002F22a.css-nesting-modern-syntax",{"title":3396,"path":3397,"stem":3398},"CSS для форм та інтерактивних станів","\u002Fhtml-css\u002Fcss-forms-interactive-states","12.html-css\u002F23.css-forms-interactive-states",{"title":3400,"path":3401,"stem":3402},"Доступність у CSS (CSS Accessibility)","\u002Fhtml-css\u002Fcss-accessibility","12.html-css\u002F24.css-accessibility",{"title":3404,"path":3405,"stem":3406},"CSS-функції та сучасні sizing primitives","\u002Fhtml-css\u002Fcss-functions-sizing","12.html-css\u002F25.css-functions-sizing",{"title":3408,"path":3409,"stem":3410},"Rendering Pipeline і CSS Performance","\u002Fhtml-css\u002Fcss-rendering-performance","12.html-css\u002F26.css-rendering-performance",{"title":3412,"path":3413,"stem":3414},"CSS Best Practices: типові ситуації та правильні рішення","\u002Fhtml-css\u002Fcss-best-practices","12.html-css\u002F27.css-best-practices",{"title":3416,"path":3417,"stem":3418,"children":3419,"page":59},"AWS","\u002Faws","13.aws",[3420,3424,3428,3432,3436,3440,3444,3448,3452,3456,3460,3464,3468,3472,3476,3480,3484,3488],{"title":3421,"path":3422,"stem":3423},"Реєстрація AWS акаунту та студентські програми","\u002Faws\u002Faccount-registration","13.aws\u002F00.account-registration",{"title":3425,"path":3426,"stem":3427},"Вступ до хмарних обчислень та AWS","\u002Faws\u002Fintroduction-to-cloud","13.aws\u002F01.introduction-to-cloud",{"title":3429,"path":3430,"stem":3431},"AWS IAM — Identity and Access Management","\u002Faws\u002Fiam","13.aws\u002F02.iam",{"title":3433,"path":3434,"stem":3435},"AWS IAM CLI — Довідник команд","\u002Faws\u002F02a.iam-doc","13.aws\u002F02a.iam-doc",{"title":3437,"path":3438,"stem":3439},"Docker та контейнеризація в AWS — ECR, ECS та Fargate","\u002Faws\u002Fdocker-ecs","13.aws\u002F03.docker-ecs",{"title":3441,"path":3442,"stem":3443},"AWS ECR \u002F ECS CLI — Довідник команд","\u002Faws\u002F03a.docker-ecs-doc","13.aws\u002F03a.docker-ecs-doc",{"title":3445,"path":3446,"stem":3447},"Amazon EC2 — Elastic Compute Cloud","\u002Faws\u002Fec2","13.aws\u002F04.ec2",{"title":3449,"path":3450,"stem":3451},"AWS EC2 CLI — Довідник команд","\u002Faws\u002F04a.ec2-doc","13.aws\u002F04a.ec2-doc",{"title":3453,"path":3454,"stem":3455},"Elastic Load Balancing та Auto Scaling","\u002Faws\u002Falb-asg","13.aws\u002F05.alb-asg",{"title":3457,"path":3458,"stem":3459},"Amazon S3 — Simple Storage Service","\u002Faws\u002Fs3","13.aws\u002F06.s3",{"title":3461,"path":3462,"stem":3463},"Amazon CloudFront — Content Delivery Network","\u002Faws\u002Fcloudfront","13.aws\u002F07.cloudfront",{"title":3465,"path":3466,"stem":3467},"Amazon RDS — Relational Database Service","\u002Faws\u002Frds","13.aws\u002F08.rds",{"title":3469,"path":3470,"stem":3471},"Amazon DynamoDB — NoSQL Database","\u002Faws\u002Fdynamodb","13.aws\u002F09.dynamodb",{"title":3473,"path":3474,"stem":3475},"AWS Lambda та Serverless Compute","\u002Faws\u002Flambda","13.aws\u002F10.lambda",{"title":3477,"path":3478,"stem":3479},"Amazon Bedrock - Foundation Models, RAG та Agents","\u002Faws\u002Fbedrock","13.aws\u002F22.bedrock",{"title":3481,"path":3482,"stem":3483},"Amazon Rekognition - Комп'ютерний зір","\u002Faws\u002Frekognition","13.aws\u002F23.rekognition",{"title":3485,"path":3486,"stem":3487},"Amazon Textract - Інтелектуальний аналіз документів","\u002Faws\u002Ftextract","13.aws\u002F24.textract",{"title":3489,"path":3490,"stem":3491},"Amazon Polly, Transcribe, Comprehend та Translate","\u002Faws\u002Faudio-nlp-services","13.aws\u002F25.audio-nlp-services",{"title":3493,"path":3494,"stem":3495,"children":3496,"page":59},"Ai Development","\u002Fai-development","14.ai-development",[3497],{"title":3498,"path":3499,"stem":3500,"children":3501,"page":59},"Foundations","\u002Fai-development\u002Ffoundations","14.ai-development\u002F00.foundations",[3502],{"title":3503,"path":3504,"stem":3505},"Модуль 0.1. Що таке Large Language Model (LLM)","\u002Fai-development\u002Ffoundations\u002Fwhat-is-llm","14.ai-development\u002F00.foundations\u002F01.what-is-llm",{"title":3507,"path":3508,"stem":3509,"children":3510,"page":59},"React Native","\u002Freact-native","15.react-native",[3511,3532],{"title":3512,"path":3513,"stem":3514,"children":3515,"page":59},"Version1","\u002Freact-native\u002Fversion1","15.react-native\u002Fversion1",[3516,3520,3524,3528],{"title":3517,"path":3518,"stem":3519},"Що таке React Native","\u002Freact-native\u002Fversion1\u002Fwhat-is-react-native","15.react-native\u002Fversion1\u002F01.what-is-react-native",{"title":3521,"path":3522,"stem":3523},"Як влаштований React Native «під капотом»","\u002Freact-native\u002Fversion1\u002Freact-native-architecture","15.react-native\u002Fversion1\u002F02.react-native-architecture",{"title":3525,"path":3526,"stem":3527},"Від React до React Native: ключові відмінності","\u002Freact-native\u002Fversion1\u002Freact-native-vs-react","15.react-native\u002Fversion1\u002F03.react-native-vs-react",{"title":3529,"path":3530,"stem":3531},"View та Text — фундаментальні будівельні блоки","\u002Freact-native\u002Fversion1\u002Fview-and-text","15.react-native\u002Fversion1\u002F04.view-and-text",{"title":3533,"path":3534,"stem":3535,"children":3536,"page":59},"Version2","\u002Freact-native\u002Fversion2","15.react-native\u002Fversion2",[3537,3541,3545,3549,3553,3557,3561,3565,3569,3573,3577,3581,3585,3589,3593,3597,3601,3605,3609,3613,3617,3621,3625,3629,3633,3637,3641],{"title":3538,"path":3539,"stem":3540},"React Native — навіщо він потрібен","\u002Freact-native\u002Fversion2\u002Fwhy-react-native","15.react-native\u002Fversion2\u002F01.why-react-native",{"title":3542,"path":3543,"stem":3544},"Налаштування середовища розробки","\u002Freact-native\u002Fversion2\u002Fenvironment-setup","15.react-native\u002Fversion2\u002F02.environment-setup",{"title":3546,"path":3547,"stem":3548},"Expo і класичний React Native — два шляхи одного фреймворку","\u002Freact-native\u002Fversion2\u002Fexpo-vs-cli-landscape","15.react-native\u002Fversion2\u002F03.expo-vs-cli-landscape",{"title":3550,"path":3551,"stem":3552},"Середовище Expo — перший запуск","\u002Freact-native\u002Fversion2\u002Fexpo-setup-and-tooling","15.react-native\u002Fversion2\u002F04.expo-setup-and-tooling",{"title":3554,"path":3555,"stem":3556},"Структура проєкту та перші UI-примітиви","\u002Freact-native\u002Fversion2\u002Fproject-structure-and-conventions","15.react-native\u002Fversion2\u002F05.project-structure-and-conventions",{"title":3558,"path":3559,"stem":3560},"Базові компоненти React Native","\u002Freact-native\u002Fversion2\u002Fcore-components","15.react-native\u002Fversion2\u002F06.core-components",{"title":3562,"path":3563,"stem":3564},"Flexbox і layout у React Native","\u002Freact-native\u002Fversion2\u002Fflexbox-and-layout","15.react-native\u002Fversion2\u002F07.flexbox-and-layout",{"title":3566,"path":3567,"stem":3568},"StyleSheet і теми (light \u002F dark)","\u002Freact-native\u002Fversion2\u002Fstylesheet-and-theming","15.react-native\u002Fversion2\u002F08.stylesheet-and-theming",{"title":3570,"path":3571,"stem":3572},"Списки та віртуалізація","\u002Freact-native\u002Fversion2\u002Flists-and-virtualization","15.react-native\u002Fversion2\u002F09.lists-and-virtualization",{"title":3574,"path":3575,"stem":3576},"Форми, ввід і валідація","\u002Freact-native\u002Fversion2\u002Fforms-input-validation","15.react-native\u002Fversion2\u002F10.forms-input-validation",{"title":3578,"path":3579,"stem":3580},"Основи Expo Router","\u002Freact-native\u002Fversion2\u002Fexpo-router-basics","15.react-native\u002Fversion2\u002F11.expo-router-basics",{"title":3582,"path":3583,"stem":3584},"Вкладені навігатори та модалки","\u002Freact-native\u002Fversion2\u002Fnested-navigators-and-modals","15.react-native\u002Fversion2\u002F12.nested-navigators-and-modals",{"title":3586,"path":3587,"stem":3588},"Deep linking і параметри маршрутів","\u002Freact-native\u002Fversion2\u002Fdeep-linking-and-params","15.react-native\u002Fversion2\u002F13.deep-linking-and-params",{"title":3590,"path":3591,"stem":3592},"Робота з мережею та життєвий цикл застосунку","\u002Freact-native\u002Fversion2\u002Fnetworking-and-app-lifecycle","15.react-native\u002Fversion2\u002F14.networking-and-app-lifecycle",{"title":3594,"path":3595,"stem":3596},"Redux Toolkit на мобільних платформах","\u002Freact-native\u002Fversion2\u002Fredux-toolkit-on-mobile","15.react-native\u002Fversion2\u002F15.redux-toolkit-on-mobile",{"title":3598,"path":3599,"stem":3600},"RTK Query на мобільних платформах","\u002Freact-native\u002Fversion2\u002Frtk-query-mobile","15.react-native\u002Fversion2\u002F16.rtk-query-mobile",{"title":3602,"path":3603,"stem":3604},"Автентифікація та Безпечне Зберігання","\u002Freact-native\u002Fversion2\u002Fauth-secure-storage","15.react-native\u002Fversion2\u002F18.auth-secure-storage",{"title":3606,"path":3607,"stem":3608},"Локальне сховище — AsyncStorage, MMKV, SQLite","\u002Freact-native\u002Fversion2\u002Flocal-storage-mmkv-sqlite","15.react-native\u002Fversion2\u002F19.local-storage-mmkv-sqlite",{"title":3610,"path":3611,"stem":3612},"Офлайн-First і синхронізація","\u002Freact-native\u002Fversion2\u002Foffline-first-sync","15.react-native\u002Fversion2\u002F20.offline-first-sync",{"title":3614,"path":3615,"stem":3616},"Камера, медіа та файлова система","\u002Freact-native\u002Fversion2\u002Fcamera-media-filesystem","15.react-native\u002Fversion2\u002F21.camera-media-filesystem",{"title":3618,"path":3619,"stem":3620},"Карти та геолокація","\u002Freact-native\u002Fversion2\u002Fmaps-and-location","15.react-native\u002Fversion2\u002F22.maps-and-location",{"title":3622,"path":3623,"stem":3624},"Жести та дотики","\u002Freact-native\u002Fversion2\u002Fgestures-and-touch","15.react-native\u002Fversion2\u002F23.gestures-and-touch",{"title":3626,"path":3627,"stem":3628},"Анімації з Reanimated","\u002Freact-native\u002Fversion2\u002Freanimated-animations","15.react-native\u002Fversion2\u002F24.reanimated-animations",{"title":3630,"path":3631,"stem":3632},"Push і локальні сповіщення","\u002Freact-native\u002Fversion2\u002Fpush-and-local-notifications","15.react-native\u002Fversion2\u002F25.push-and-local-notifications",{"title":3634,"path":3635,"stem":3636},"Інтернаціоналізація та доступність","\u002Freact-native\u002Fversion2\u002Faccessibility-and-i18n","15.react-native\u002Fversion2\u002F26.accessibility-and-i18n",{"title":3638,"path":3639,"stem":3640},"EAS Build та профілі збірки","\u002Freact-native\u002Fversion2\u002Feas-build-and-profiles","15.react-native\u002Fversion2\u002F29.eas-build-and-profiles",{"title":3642,"path":3643,"stem":3644},"Публікація в App Store та Google Play","\u002Freact-native\u002Fversion2\u002Fapp-store-play-release","15.react-native\u002Fversion2\u002F30.app-store-play-release",{"title":3646,"path":3647,"stem":3648,"children":3649,"page":59},"Ai Python","\u002Fai-python","16.ai-python",[3650,3659,3668,3677,3706,3732,3757,3790,3807,3820,3829,3842,3851,3872,3885,3906],{"title":3651,"path":3652,"stem":3653,"children":3654,"page":59},"Intro To Ai","\u002Fai-python\u002Fintro-to-ai","16.ai-python\u002F01.intro-to-ai",[3655],{"title":3656,"path":3657,"stem":3658},"Вступ до штучного інтелекту та машинного навчання","\u002Fai-python\u002Fintro-to-ai\u002Fintro-to-ai","16.ai-python\u002F01.intro-to-ai\u002F01.intro-to-ai",{"title":3660,"path":3661,"stem":3662,"children":3663,"page":59},"Jupyter Notebook","\u002Fai-python\u002Fjupyter-notebook","16.ai-python\u002F02.jupyter-notebook",[3664],{"title":3665,"path":3666,"stem":3667},"Знайомство з Jupyter Notebook та JupyterLab","\u002Fai-python\u002Fjupyter-notebook\u002Fjupyter-notebook","16.ai-python\u002F02.jupyter-notebook\u002F02.jupyter-notebook",{"title":3669,"path":3670,"stem":3671,"children":3672,"page":59},"Numpy Pandas","\u002Fai-python\u002Fnumpy-pandas","16.ai-python\u002F03.numpy-pandas",[3673],{"title":3674,"path":3675,"stem":3676},"Робота з даними з використанням NumPy і pandas","\u002Fai-python\u002Fnumpy-pandas\u002Fnumpy-pandas","16.ai-python\u002F03.numpy-pandas\u002F03.numpy-pandas",{"title":3678,"path":3679,"stem":3680,"children":3681,"page":59},"Statistics Basics","\u002Fai-python\u002Fstatistics-basics","16.ai-python\u002F04.statistics-basics",[3682,3686,3690,3694,3698,3702],{"title":3683,"path":3684,"stem":3685},"Випадкові величини та їх типи","\u002Fai-python\u002Fstatistics-basics\u002Frandom-variables","16.ai-python\u002F04.statistics-basics\u002F01.random-variables",{"title":3687,"path":3688,"stem":3689},"Міри центральної тенденції","\u002Fai-python\u002Fstatistics-basics\u002Fcentral-tendency","16.ai-python\u002F04.statistics-basics\u002F02.central-tendency",{"title":3691,"path":3692,"stem":3693},"Міри варіації (розсіювання)","\u002Fai-python\u002Fstatistics-basics\u002Fvariability","16.ai-python\u002F04.statistics-basics\u002F03.variability",{"title":3695,"path":3696,"stem":3697},"Розподіли випадкових величин","\u002Fai-python\u002Fstatistics-basics\u002Fdistributions","16.ai-python\u002F04.statistics-basics\u002F04.distributions",{"title":3699,"path":3700,"stem":3701},"Кореляція та взаємозв'язки","\u002Fai-python\u002Fstatistics-basics\u002Fcorrelation","16.ai-python\u002F04.statistics-basics\u002F05.correlation",{"title":3703,"path":3704,"stem":3705},"Викиди та аномалії","\u002Fai-python\u002Fstatistics-basics\u002Foutliers","16.ai-python\u002F04.statistics-basics\u002F06.outliers",{"title":3707,"path":3708,"stem":3709,"children":3710},"Візуалізація даних за допомогою matplotlib","\u002Fai-python\u002Fdata-visualization","16.ai-python\u002F05.data-visualization\u002Findex",[3711,3712,3716,3720,3724,3728],{"title":3707,"path":3708,"stem":3709},{"title":3713,"path":3714,"stem":3715},"Основи matplotlib — Figure, Axes та перший графік","\u002Fai-python\u002Fdata-visualization\u002Fmatplotlib-basics","16.ai-python\u002F05.data-visualization\u002F01.matplotlib-basics",{"title":3717,"path":3718,"stem":3719},"Візуалізація розподілів — гістограми та box plots","\u002Fai-python\u002Fdata-visualization\u002Fdistributions","16.ai-python\u002F05.data-visualization\u002F02.distributions",{"title":3721,"path":3722,"stem":3723},"Візуалізація залежностей — scatter plots та кореляція","\u002Fai-python\u002Fdata-visualization\u002Frelationships","16.ai-python\u002F05.data-visualization\u002F03.relationships",{"title":3725,"path":3726,"stem":3727},"Візуалізація категоріальних даних — bar charts та pie charts","\u002Fai-python\u002Fdata-visualization\u002Fcategorical","16.ai-python\u002F05.data-visualization\u002F04.categorical",{"title":3729,"path":3730,"stem":3731},"Композиції та стилізація — subplots та багатопанельні дашборди","\u002Fai-python\u002Fdata-visualization\u002Fsubplots-styling","16.ai-python\u002F05.data-visualization\u002F05.subplots-styling",{"title":3733,"path":3734,"stem":3735,"children":3736,"page":59},"Linear Regression","\u002Fai-python\u002Flinear-regression","16.ai-python\u002F06.linear-regression",[3737,3741,3745,3749,3753],{"title":3738,"path":3739,"stem":3740},"Регресійна задача та лінійна регресія з однією змінною","\u002Fai-python\u002Flinear-regression\u002Fregression-task","16.ai-python\u002F06.linear-regression\u002F01.regression-task",{"title":3742,"path":3743,"stem":3744},"Метрики якості регресії — як оцінити модель","\u002Fai-python\u002Flinear-regression\u002Fquality-metrics","16.ai-python\u002F06.linear-regression\u002F02.quality-metrics",{"title":3746,"path":3747,"stem":3748},"Градієнтний спуск — як модель навчається","\u002Fai-python\u002Flinear-regression\u002Fgradient-descent","16.ai-python\u002F06.linear-regression\u002F03.gradient-descent",{"title":3750,"path":3751,"stem":3752},"Множинна лінійна регресія — модель з багатьма ознаками","\u002Fai-python\u002Flinear-regression\u002Fmultiple-regression","16.ai-python\u002F06.linear-regression\u002F04.multiple-regression",{"title":3754,"path":3755,"stem":3756},"Практичні завдання та резюме модуля","\u002Fai-python\u002Flinear-regression\u002Fpractice","16.ai-python\u002F06.linear-regression\u002F05.practice",{"title":3758,"path":3759,"stem":3760,"children":3761,"page":59},"Practical Regression","\u002Fai-python\u002Fpractical-regression","16.ai-python\u002F07.practical-regression",[3762,3766,3770,3774,3778,3782,3786],{"title":3763,"path":3764,"stem":3765},"Знайомство з scikit-learn","\u002Fai-python\u002Fpractical-regression\u002Fintro-scikit-learn","16.ai-python\u002F07.practical-regression\u002F01.intro-scikit-learn",{"title":3767,"path":3768,"stem":3769},"Exploratory Data Analysis датасету Housing Prices","\u002Fai-python\u002Fpractical-regression\u002Fhousing-dataset-eda","16.ai-python\u002F07.practical-regression\u002F02.housing-dataset-eda",{"title":3771,"path":3772,"stem":3773},"Попередня обробка даних (Data Preprocessing)","\u002Fai-python\u002Fpractical-regression\u002Fdata-preprocessing","16.ai-python\u002F07.practical-regression\u002F03.data-preprocessing",{"title":3775,"path":3776,"stem":3777},"Train\u002FTest Split та перша повноцінна модель","\u002Fai-python\u002Fpractical-regression\u002Ftrain-test-split","16.ai-python\u002F07.practical-regression\u002F04.train-test-split",{"title":3779,"path":3780,"stem":3781},"Перенавчання та недонавчання","\u002Fai-python\u002Fpractical-regression\u002Foverfitting-underfitting","16.ai-python\u002F07.practical-regression\u002F05.overfitting-underfitting",{"title":3783,"path":3784,"stem":3785},"Крос-валідація (Cross-Validation)","\u002Fai-python\u002Fpractical-regression\u002Fcross-validation","16.ai-python\u002F07.practical-regression\u002F06.cross-validation",{"title":3787,"path":3788,"stem":3789},"Гіперпараметри та їх оптимізація","\u002Fai-python\u002Fpractical-regression\u002Fhyperparameter-tuning","16.ai-python\u002F07.practical-regression\u002F07.hyperparameter-tuning",{"title":3791,"path":3792,"stem":3793,"children":3794,"page":59},"Polynomial Regression","\u002Fai-python\u002Fpolynomial-regression","16.ai-python\u002F08.polynomial-regression",[3795,3799,3803],{"title":3796,"path":3797,"stem":3798},"Нелінійні залежності та поліноміальна регресія","\u002Fai-python\u002Fpolynomial-regression\u002Fnonlinear-patterns","16.ai-python\u002F08.polynomial-regression\u002F01.nonlinear-patterns",{"title":3800,"path":3801,"stem":3802},"Регуляризація в регресії — Ridge та Lasso","\u002Fai-python\u002Fpolynomial-regression\u002Fregularization-methods","16.ai-python\u002F08.polynomial-regression\u002F02.regularization-methods",{"title":3804,"path":3805,"stem":3806},"Практика — поліноміальна регресія та регуляризація на Housing Prices","\u002Fai-python\u002Fpolynomial-regression\u002Fhousing-prices-practice","16.ai-python\u002F08.polynomial-regression\u002F03.housing-prices-practice",{"title":3808,"path":3809,"stem":3810,"children":3811,"page":59},"Decision Trees Random Forest","\u002Fai-python\u002Fdecision-trees-random-forest","16.ai-python\u002F09.decision-trees-random-forest",[3812,3816],{"title":3813,"path":3814,"stem":3815},"Дерева рішень — інтерпретабельні моделі машинного навчання","\u002Fai-python\u002Fdecision-trees-random-forest\u002Fdecision-trees","16.ai-python\u002F09.decision-trees-random-forest\u002F01.decision-trees",{"title":3817,"path":3818,"stem":3819},"Random Forest — ансамблі дерев рішень","\u002Fai-python\u002Fdecision-trees-random-forest\u002Frandom-forest","16.ai-python\u002F09.decision-trees-random-forest\u002F02.random-forest",{"title":3821,"path":3822,"stem":3823,"children":3824,"page":59},"Gradient Boosting","\u002Fai-python\u002Fgradient-boosting","16.ai-python\u002F10.gradient-boosting",[3825],{"title":3826,"path":3827,"stem":3828},"Градієнтний бустинг та XGBoost — послідовне виправлення помилок","\u002Fai-python\u002Fgradient-boosting\u002Fgradient-boosting-xgboost","16.ai-python\u002F10.gradient-boosting\u002F01.gradient-boosting-xgboost",{"title":3830,"path":3831,"stem":3832,"children":3833,"page":59},"Logistic Regression Classification","\u002Fai-python\u002Flogistic-regression-classification","16.ai-python\u002F11.logistic-regression-classification",[3834,3838],{"title":3835,"path":3836,"stem":3837},"Вступ до класифікації та логістична регресія","\u002Fai-python\u002Flogistic-regression-classification\u002Fclassification-basics","16.ai-python\u002F11.logistic-regression-classification\u002F01.classification-basics",{"title":3839,"path":3840,"stem":3841},"Метрики якості класифікації — Confusion Matrix, Precision, Recall, F1","\u002Fai-python\u002Flogistic-regression-classification\u002Fclassification-metrics","16.ai-python\u002F11.logistic-regression-classification\u002F02.classification-metrics",{"title":3843,"path":3844,"stem":3845,"children":3846,"page":59},"Neural Networks Basics","\u002Fai-python\u002Fneural-networks-basics","16.ai-python\u002F12.neural-networks-basics",[3847],{"title":3848,"path":3849,"stem":3850},"Вступ до нейронних мереж — від персептрона до багатошарових мереж","\u002Fai-python\u002Fneural-networks-basics\u002Fperceptron-to-mlp","16.ai-python\u002F12.neural-networks-basics\u002F01.perceptron-to-mlp",{"title":3852,"path":3853,"stem":3854,"children":3855,"page":59},"Pytorch Intro","\u002Fai-python\u002Fpytorch-intro","16.ai-python\u002F13.pytorch-intro",[3856,3860,3864,3868],{"title":3857,"path":3858,"stem":3859},"Тензори та автоматичне диференціювання в PyTorch","\u002Fai-python\u002Fpytorch-intro\u002Ftensors-and-autograd","16.ai-python\u002F13.pytorch-intro\u002F01.tensors-and-autograd",{"title":3861,"path":3862,"stem":3863},"Побудова та тренування нейронних мереж у PyTorch","\u002Fai-python\u002Fpytorch-intro\u002Fbuilding-and-training","16.ai-python\u002F13.pytorch-intro\u002F02.building-and-training",{"title":3865,"path":3866,"stem":3867},"Робота з даними та регуляризація в PyTorch","\u002Fai-python\u002Fpytorch-intro\u002Fdata-and-regularization","16.ai-python\u002F13.pytorch-intro\u002F03.data-and-regularization",{"title":3869,"path":3870,"stem":3871},"Просунуті теми PyTorch — GPU, оптимізація та deployment","\u002Fai-python\u002Fpytorch-intro\u002Fadvanced-topics","16.ai-python\u002F13.pytorch-intro\u002F04.advanced-topics",{"title":3873,"path":3874,"stem":3875,"children":3876,"page":59},"Activation Functions Heart Disease","\u002Fai-python\u002Factivation-functions-heart-disease","16.ai-python\u002F14.activation-functions-heart-disease",[3877,3881],{"title":3878,"path":3879,"stem":3880},"Функції активації та побудова нейронної мережі для передбачення вад серця","\u002Fai-python\u002Factivation-functions-heart-disease\u002Fheart-disease-prediction","16.ai-python\u002F14.activation-functions-heart-disease\u002F01.heart-disease-prediction",{"title":3882,"path":3883,"stem":3884},"Бонус — Повний приклад Student Performance Prediction","\u002Fai-python\u002Factivation-functions-heart-disease\u002Fstudent-performance-bonus","16.ai-python\u002F14.activation-functions-heart-disease\u002F02.student-performance-bonus",{"title":3886,"path":3887,"stem":3888,"children":3889,"page":59},"Cnn Image Classification","\u002Fai-python\u002Fcnn-image-classification","16.ai-python\u002F15.cnn-image-classification",[3890,3894,3898,3902],{"title":3891,"path":3892,"stem":3893},"Основи згорткових нейронних мереж — чому не MLP?","\u002Fai-python\u002Fcnn-image-classification\u002Fcnn-fundamentals","16.ai-python\u002F15.cnn-image-classification\u002F01.cnn-fundamentals",{"title":3895,"path":3896,"stem":3897},"Практична імплементація CNN для класифікації MNIST","\u002Fai-python\u002Fcnn-image-classification\u002Fmnist-classification","16.ai-python\u002F15.cnn-image-classification\u002F02.mnist-classification",{"title":3899,"path":3900,"stem":3901},"Глибші CNN та аугментація даних для CIFAR-10","\u002Fai-python\u002Fcnn-image-classification\u002Fcifar10-and-data-augmentation","16.ai-python\u002F15.cnn-image-classification\u002F03.cifar10-and-data-augmentation",{"title":3903,"path":3904,"stem":3905},"Transfer Learning та візуалізація внутрішніх представлень CNN","\u002Fai-python\u002Fcnn-image-classification\u002Ftransfer-learning-and-visualization","16.ai-python\u002F15.cnn-image-classification\u002F04.transfer-learning-and-visualization",{"title":3907,"path":3908,"stem":3909,"children":3910,"page":59},"Batching Normalization Deep Networks","\u002Fai-python\u002Fbatching-normalization-deep-networks","16.ai-python\u002F16.batching-normalization-deep-networks",[3911,3915,3919,3923,3927,3931,3935],{"title":3912,"path":3913,"stem":3914},"Mini-batch Gradient Descent та ефективна обробка даних","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Fmini-batch-gradient-descent","16.ai-python\u002F16.batching-normalization-deep-networks\u002F01.mini-batch-gradient-descent",{"title":3916,"path":3917,"stem":3918},"Ініціалізація ваг — фундамент стабільного навчання","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Fweight-initialization","16.ai-python\u002F16.batching-normalization-deep-networks\u002F02.weight-initialization",{"title":3920,"path":3921,"stem":3922},"Batch Normalization — прорив у глибокому навчанні","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Fbatch-normalization","16.ai-python\u002F16.batching-normalization-deep-networks\u002F03.batch-normalization",{"title":3924,"path":3925,"stem":3926},"Dropout та комбіновані стратегії регуляризації","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Fdropout-and-regularization","16.ai-python\u002F16.batching-normalization-deep-networks\u002F04.dropout-and-regularization",{"title":3928,"path":3929,"stem":3930},"Проєктування глибоких мереж — від теорії до практики","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Fdeep-networks-architectures","16.ai-python\u002F16.batching-normalization-deep-networks\u002F05.deep-networks-architectures",{"title":3932,"path":3933,"stem":3934},"Планування learning rate — коли та як зменшувати крок навчання","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Flearning-rate-scheduling","16.ai-python\u002F16.batching-normalization-deep-networks\u002F06.learning-rate-scheduling",{"title":3936,"path":3937,"stem":3938},"Підсумковий проєкт — побудова сучасного класифікатора зображень","\u002Fai-python\u002Fbatching-normalization-deep-networks\u002Ffinal-project-deep-classifier","16.ai-python\u002F16.batching-normalization-deep-networks\u002F07.final-project-deep-classifier",{"title":3940,"icon":658,"path":3941,"stem":3942,"children":3943,"page":59},"Клієнт-серверна архітектура","\u002Fclient-server-architecture","17.client-server-architecture",[3944,3948,3952,3956,3960,3964,3968,3972,3976,3980,3984,3988,3992,3996,4000,4004,4008,4012],{"title":3945,"path":3946,"stem":3947},"Архітектура клієнт-серверних систем та основи Go","\u002Fclient-server-architecture\u002Fclient-server-architecture-and-go","17.client-server-architecture\u002F01.client-server-architecture-and-go",{"title":3949,"path":3950,"stem":3951},"Система типів та модель пам’яті мови Go","\u002Fclient-server-architecture\u002Ftype-system-and-memory-model","17.client-server-architecture\u002F02.type-system-and-memory-model",{"title":3953,"path":3954,"stem":3955},"Інтерфейси та модель конкурентності мови Go","\u002Fclient-server-architecture\u002Finterfaces-and-concurrency-model","17.client-server-architecture\u002F03.interfaces-and-concurrency-model",{"title":3957,"path":3958,"stem":3959},"Сокетне програмування та протокол TCP у Go","\u002Fclient-server-architecture\u002Ftcp-socket-programming","17.client-server-architecture\u002F04.tcp-socket-programming",{"title":3961,"path":3962,"stem":3963},"Протокол UDP та датаграмна передача даних","\u002Fclient-server-architecture\u002Fudp-datagram-transmission","17.client-server-architecture\u002F05.udp-datagram-transmission",{"title":3965,"path":3966,"stem":3967},"Криптографічний захист каналів зв","\u002Fclient-server-architecture\u002Ftls-cryptographic-channel-protection","17.client-server-architecture\u002F06.tls-cryptographic-channel-protection",{"title":3969,"path":3970,"stem":3971},"Прикладні мережеві протоколи DNS та SMTP","\u002Fclient-server-architecture\u002Fdns-smtp-application-protocols","17.client-server-architecture\u002F07.dns-smtp-application-protocols",{"title":3973,"path":3974,"stem":3975},"Протокол HTTP та стандартний вебсервер Go","\u002Fclient-server-architecture\u002Fhttp-protocol-and-web-server","17.client-server-architecture\u002F08.http-protocol-and-web-server",{"title":3977,"path":3978,"stem":3979},"Проєктування REST API та маршрутизація засобами Chi","\u002Fclient-server-architecture\u002Frest-api-design-and-chi-routing","17.client-server-architecture\u002F09.rest-api-design-and-chi-routing",{"title":3981,"path":3982,"stem":3983},"Лекція 10. Шарувата архітектура та конвеєри обробки запитів","\u002Fclient-server-architecture\u002Flayered-architecture-and-middleware-pipelines","17.client-server-architecture\u002F10.layered-architecture-and-middleware-pipelines",{"title":3985,"path":3986,"stem":3987},"Лекція 11. Архітектура та маршрутизація фреймворку Gin","\u002Fclient-server-architecture\u002Fgin-framework-architecture-and-routing","17.client-server-architecture\u002F11.gin-framework-architecture-and-routing",{"title":3989,"path":3990,"stem":3991},"Лекція 12. Валідація даних, безпека та документування у Gin","\u002Fclient-server-architecture\u002Fdata-validation-security-and-documentation-in-gin","17.client-server-architecture\u002F12.data-validation-security-and-documentation-in-gin",{"title":3993,"path":3994,"stem":3995},"Лекція 13. Взаємодія з реляційними СУБД та технології ORM","\u002Fclient-server-architecture\u002Frelational-databases-and-orm","17.client-server-architecture\u002F13.relational-databases-and-orm",{"title":3997,"path":3998,"stem":3999},"Потокова передача даних та протокол WebSocket","\u002Fclient-server-architecture\u002Fstreaming-data-and-websockets","17.client-server-architecture\u002F14.streaming-data-and-websockets",{"title":4001,"path":4002,"stem":4003},"Міжсервісна взаємодія на основі протоколу gRPC","\u002Fclient-server-architecture\u002Fgrpc-inter-service-communication","17.client-server-architecture\u002F15.grpc-inter-service-communication",{"title":4005,"path":4006,"stem":4007},"Асинхронний обмін повідомленнями та протоколи черг","\u002Fclient-server-architecture\u002Fasynchronous-message-exchange-and-queue-protocols","17.client-server-architecture\u002F16.asynchronous-message-exchange-and-queue-protocols",{"title":4009,"path":4010,"stem":4011},"Протоколи потокового медіа та технологія WebRTC","\u002Fclient-server-architecture\u002Fstreaming-media-protocols-and-webrtc","17.client-server-architecture\u002F17.streaming-media-protocols-and-webrtc",{"title":4013,"path":4014,"stem":4015},"Моніторинг, безпека та контейнеризація застосунків","\u002Fclient-server-architecture\u002Fmonitoring-security-and-containerization","17.client-server-architecture\u002F18.monitoring-security-and-containerization",{"title":4017,"icon":2074,"path":4018,"stem":4019,"children":4020,"page":59},"Розробка WEB-застосувань","\u002Fweb-development","18.web-development",[4021,4066,4104,4133,4162,4219,4269,4363,4429,4511,4544,4572,4614,4660,4703],{"title":4022,"icon":658,"path":4023,"stem":4024,"children":4025,"page":59},"Архітектура комп'ютерних мереж та мережеві протоколи","\u002Fweb-development\u002Fnetwork-architecture-and-protocols","18.web-development\u002F01.network-architecture-and-protocols",[4026,4030,4034,4038,4042,4046,4050,4054,4058,4062],{"title":4027,"path":4028,"stem":4029},"Еволюція веброзробки та модель клієнт-сервер","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fweb-evolution-client-server","18.web-development\u002F01.network-architecture-and-protocols\u002F01.web-evolution-client-server",{"title":4031,"path":4032,"stem":4033},"Еталонна модель OSI","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fosi-model","18.web-development\u002F01.network-architecture-and-protocols\u002F02.osi-model",{"title":4035,"path":4036,"stem":4037},"Стек протоколів TCP\u002FIP","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Ftcp-ip-stack","18.web-development\u002F01.network-architecture-and-protocols\u002F03.tcp-ip-stack",{"title":4039,"path":4040,"stem":4041},"IP-адресація, порти та сокети","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fip-addressing-ports-sockets","18.web-development\u002F01.network-architecture-and-protocols\u002F04.ip-addressing-ports-sockets",{"title":4043,"path":4044,"stem":4045},"Протоколи TCP та UDP","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Ftcp-udp-protocols","18.web-development\u002F01.network-architecture-and-protocols\u002F05.tcp-udp-protocols",{"title":4047,"path":4048,"stem":4049},"Система доменних імен DNS","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fdns-system","18.web-development\u002F01.network-architecture-and-protocols\u002F06.dns-system",{"title":4051,"path":4052,"stem":4053},"Протокол SMTP та поштові протоколи","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fsmtp-email-protocols","18.web-development\u002F01.network-architecture-and-protocols\u002F07.smtp-email-protocols",{"title":4055,"path":4056,"stem":4057},"Протокол WebSocket","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fwebsocket-protocol","18.web-development\u002F01.network-architecture-and-protocols\u002F08.websocket-protocol",{"title":4059,"path":4060,"stem":4061},"Протокол SSH","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fssh-protocol","18.web-development\u002F01.network-architecture-and-protocols\u002F09.ssh-protocol",{"title":4063,"path":4064,"stem":4065},"Огляд сучасних серверних технологій","\u002Fweb-development\u002Fnetwork-architecture-and-protocols\u002Fmodern-backend-technologies","18.web-development\u002F01.network-architecture-and-protocols\u002F10.modern-backend-technologies",{"title":4067,"icon":4068,"path":4069,"stem":4070,"children":4071,"page":59},"Протокол HTTP та захищена передача даних HTTPS","i-lucide-lock","\u002Fweb-development\u002Fhttp-and-https","18.web-development\u002F02.http-and-https",[4072,4076,4080,4084,4088,4092,4096,4100],{"title":4073,"path":4074,"stem":4075},"Вступ до протоколу HTTP та еволюція веб-технологій","\u002Fweb-development\u002Fhttp-and-https\u002Fintroduction-and-evolution","18.web-development\u002F02.http-and-https\u002F01.introduction-and-evolution",{"title":4077,"path":4078,"stem":4079},"Анатомія HTTP-запиту","\u002Fweb-development\u002Fhttp-and-https\u002Fhttp-request-structure","18.web-development\u002F02.http-and-https\u002F02.http-request-structure",{"title":4081,"path":4082,"stem":4083},"Анатомія HTTP-відповіді","\u002Fweb-development\u002Fhttp-and-https\u002Fhttp-response-structure","18.web-development\u002F02.http-and-https\u002F03.http-response-structure",{"title":4085,"path":4086,"stem":4087},"Методи HTTP та їхня семантика","\u002Fweb-development\u002Fhttp-and-https\u002Fhttp-methods","18.web-development\u002F02.http-and-https\u002F04.http-methods",{"title":4089,"path":4090,"stem":4091},"Коди статусу HTTP та їхнє призначення","\u002Fweb-development\u002Fhttp-and-https\u002Fhttp-status-codes","18.web-development\u002F02.http-and-https\u002F05.http-status-codes",{"title":4093,"path":4094,"stem":4095},"HTTP-заголовки та їхнє призначення","\u002Fweb-development\u002Fhttp-and-https\u002Fhttp-headers","18.web-development\u002F02.http-and-https\u002F06.http-headers",{"title":4097,"path":4098,"stem":4099},"CORS та механізми безпеки HTTP","\u002Fweb-development\u002Fhttp-and-https\u002Fcors-and-security","18.web-development\u002F02.http-and-https\u002F07.cors-and-security",{"title":4101,"path":4102,"stem":4103},"HTTPS та криптографічні основи TLS","\u002Fweb-development\u002Fhttp-and-https\u002Fhttps-and-tls","18.web-development\u002F02.http-and-https\u002F08.https-and-tls",{"title":4105,"icon":2454,"path":4106,"stem":4107,"children":4108,"page":59},"Система типів мови TypeScript","\u002Fweb-development\u002Ftypescript-type-system","18.web-development\u002F03.typescript-type-system",[4109,4113,4117,4121,4125,4129],{"title":4110,"path":4111,"stem":4112},"Знайомство з TypeScript Compiler","\u002Fweb-development\u002Ftypescript-type-system\u002Fintroduction-compiler-config","18.web-development\u002F03.typescript-type-system\u002F01.introduction-compiler-config",{"title":4114,"path":4115,"stem":4116},"Примітивні типи даних: string, number, boolean","\u002Fweb-development\u002Ftypescript-type-system\u002Fprimitive-special-types","18.web-development\u002F03.typescript-type-system\u002F02.primitive-special-types",{"title":4118,"path":4119,"stem":4120},"Масиви, кортежі та об","\u002Fweb-development\u002Ftypescript-type-system\u002Farrays-tuples-objects","18.web-development\u002F03.typescript-type-system\u002F03.arrays-tuples-objects",{"title":4122,"path":4123,"stem":4124},"Псевдоніми типів, Union типи, Intersection типи та літеральні типи","\u002Fweb-development\u002Ftypescript-type-system\u002Funion-intersection-literals","18.web-development\u002F03.typescript-type-system\u002F04.union-intersection-literals",{"title":4126,"path":4127,"stem":4128},"Type Narrowing (звуження типів)","\u002Fweb-development\u002Ftypescript-type-system\u002Ftype-narrowing","18.web-development\u002F03.typescript-type-system\u002F05.type-narrowing",{"title":4130,"path":4131,"stem":4132},"Типізація функцій","\u002Fweb-development\u002Ftypescript-type-system\u002Ffunctions-typing","18.web-development\u002F03.typescript-type-system\u002F06.functions-typing",{"title":4134,"icon":2454,"path":4135,"stem":4136,"children":4137,"page":59},"Розширені засоби мови TypeScript","\u002Fweb-development\u002Ftypescript-advanced","18.web-development\u002F04.typescript-advanced",[4138,4142,4146,4150,4154,4158],{"title":4139,"path":4140,"stem":4141},"Interfaces та Classes","\u002Fweb-development\u002Ftypescript-advanced\u002Finterfaces-classes","18.web-development\u002F04.typescript-advanced\u002F01.interfaces-classes",{"title":4143,"path":4144,"stem":4145},"Основи Generic типів","\u002Fweb-development\u002Ftypescript-advanced\u002Fgenerics-fundamentals","18.web-development\u002F04.typescript-advanced\u002F02.generics-fundamentals",{"title":4147,"path":4148,"stem":4149},"Enums та Decorators","\u002Fweb-development\u002Ftypescript-advanced\u002Fenums-decorators","18.web-development\u002F04.typescript-advanced\u002F03.enums-decorators",{"title":4151,"path":4152,"stem":4153},"Utility Types","\u002Fweb-development\u002Ftypescript-advanced\u002Futility-types","18.web-development\u002F04.typescript-advanced\u002F04.utility-types",{"title":4155,"path":4156,"stem":4157},"Mapped та Conditional Types","\u002Fweb-development\u002Ftypescript-advanced\u002Fmapped-conditional-types","18.web-development\u002F04.typescript-advanced\u002F05.mapped-conditional-types",{"title":4159,"path":4160,"stem":4161},"Модулі та Strict Mode","\u002Fweb-development\u002Ftypescript-advanced\u002Fmodules-strict-mode","18.web-development\u002F04.typescript-advanced\u002F06.modules-strict-mode",{"title":4163,"icon":4164,"path":4165,"stem":4166,"children":4167,"page":59},"Платформа Node.js як середовище виконання","i-devicon-nodejs","\u002Fweb-development\u002Fnodejs-platform","18.web-development\u002F05.nodejs-platform",[4168,4172,4176,4180,4184,4188,4192,4196,4200,4204,4208,4211,4215],{"title":4169,"path":4170,"stem":4171},"Що таке Node.js та його архітектура","\u002Fweb-development\u002Fnodejs-platform\u002Fwhat-is-nodejs","18.web-development\u002F05.nodejs-platform\u002F01.what-is-nodejs",{"title":4173,"path":4174,"stem":4175},"Event Loop — серце Node.js","\u002Fweb-development\u002Fnodejs-platform\u002Fevent-loop","18.web-development\u002F05.nodejs-platform\u002F02.event-loop",{"title":4177,"path":4178,"stem":4179},"Модульні системи: CommonJS vs ES Modules","\u002Fweb-development\u002Fnodejs-platform\u002Fmodule-systems","18.web-development\u002F05.nodejs-platform\u002F03.module-systems",{"title":4181,"path":4182,"stem":4183},"npm та package.json","\u002Fweb-development\u002Fnodejs-platform\u002Fnpm-package-json","18.web-development\u002F05.nodejs-platform\u002F04.npm-package-json",{"title":4185,"path":4186,"stem":4187},"Глобальні об\\","\u002Fweb-development\u002Fnodejs-platform\u002Fglobal-objects","18.web-development\u002F05.nodejs-platform\u002F05.global-objects",{"title":4189,"path":4190,"stem":4191},"Вбудований модуль fs (File System)","\u002Fweb-development\u002Fnodejs-platform\u002Fbuilt-in-modules-fs","18.web-development\u002F05.nodejs-platform\u002F06.built-in-modules-fs",{"title":4193,"path":4194,"stem":4195},"Вбудований модуль path","\u002Fweb-development\u002Fnodejs-platform\u002Fbuilt-in-modules-path","18.web-development\u002F05.nodejs-platform\u002F07.built-in-modules-path",{"title":4197,"path":4198,"stem":4199},"Вбудований модуль http","\u002Fweb-development\u002Fnodejs-platform\u002Fbuilt-in-modules-http","18.web-development\u002F05.nodejs-platform\u002F08.built-in-modules-http",{"title":4201,"path":4202,"stem":4203},"Streams — потоки даних у Node.js","\u002Fweb-development\u002Fnodejs-platform\u002Fstreams","18.web-development\u002F05.nodejs-platform\u002F09.streams",{"title":4205,"path":4206,"stem":4207},"Вбудований модуль util (Utilities)","\u002Fweb-development\u002Fnodejs-platform\u002Fbuilt-in-modules-util","18.web-development\u002F05.nodejs-platform\u002F10.built-in-modules-util",{"title":3097,"path":4209,"stem":4210},"\u002Fweb-development\u002Fnodejs-platform\u002Fenvironment-variables","18.web-development\u002F05.nodejs-platform\u002F11.environment-variables",{"title":4212,"path":4213,"stem":4214},"Інструменти налагодження та розробки","\u002Fweb-development\u002Fnodejs-platform\u002Fdebugging-tools","18.web-development\u002F05.nodejs-platform\u002F12.debugging-tools",{"title":4216,"path":4217,"stem":4218},"Продуктивність та Best Practices","\u002Fweb-development\u002Fnodejs-platform\u002Fperformance-best-practices","18.web-development\u002F05.nodejs-platform\u002F13.performance-best-practices",{"title":4220,"icon":4221,"path":4222,"stem":4223,"children":4224,"page":59},"Асинхронне програмування у Node.js","i-lucide-clock","\u002Fweb-development\u002Fasync-programming-nodejs","18.web-development\u002F06.async-programming-nodejs",[4225,4229,4233,4237,4241,4245,4249,4253,4257,4261,4265],{"title":4226,"path":4227,"stem":4228},"Синхронний vs асинхронний код","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fsync-vs-async","18.web-development\u002F06.async-programming-nodejs\u002F01.sync-vs-async",{"title":4230,"path":4231,"stem":4232},"Callbacks — перша парадигма асинхронності","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fcallbacks","18.web-development\u002F06.async-programming-nodejs\u002F02.callbacks",{"title":4234,"path":4235,"stem":4236},"Promises — стандарт асинхронності","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fpromises","18.web-development\u002F06.async-programming-nodejs\u002F03.promises",{"title":4238,"path":4239,"stem":4240},"Promise комбінатори","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fpromise-combinators","18.web-development\u002F06.async-programming-nodejs\u002F04.promise-combinators",{"title":4242,"path":4243,"stem":4244},"Async\u002FAwait — синтаксичний цукор над Promises","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fasync-await","18.web-development\u002F06.async-programming-nodejs\u002F05.async-await",{"title":4246,"path":4247,"stem":4248},"Паралельне vs послідовне виконання","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fparallel-vs-sequential","18.web-development\u002F06.async-programming-nodejs\u002F06.parallel-vs-sequential",{"title":4250,"path":4251,"stem":4252},"EventEmitter — подієва модель Node.js","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fevent-emitter","18.web-development\u002F06.async-programming-nodejs\u002F07.event-emitter",{"title":4254,"path":4255,"stem":4256},"Worker Threads — багатопотоковість у Node.js","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fworker-threads","18.web-development\u002F06.async-programming-nodejs\u002F08.worker-threads",{"title":4258,"path":4259,"stem":4260},"Child Processes — запуск зовнішніх процесів","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fchild-processes","18.web-development\u002F06.async-programming-nodejs\u002F09.child-processes",{"title":4262,"path":4263,"stem":4264},"Обробка помилок у асинхронному коді","\u002Fweb-development\u002Fasync-programming-nodejs\u002Ferror-handling","18.web-development\u002F06.async-programming-nodejs\u002F10.error-handling",{"title":4266,"path":4267,"stem":4268},"Порівняння Node.js фреймворків","\u002Fweb-development\u002Fasync-programming-nodejs\u002Fnodejs-frameworks","18.web-development\u002F06.async-programming-nodejs\u002F11.nodejs-frameworks",{"title":4270,"icon":4271,"path":4272,"stem":4273,"children":4274,"page":59},"Тема 7. Фреймворк NestJS. Контролери та маршрутизація","i-lucide-route","\u002Fweb-development\u002Fnestjs-controllers-routing","18.web-development\u002F07.nestjs-controllers-routing",[4275,4279,4283,4287,4291,4295,4299,4303,4307,4311,4315,4319,4323,4327,4331,4335,4339,4343,4347,4351,4355,4359],{"title":4276,"path":4277,"stem":4278},"Філософія та архітектура NestJS","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fnestjs-philosophy","18.web-development\u002F07.nestjs-controllers-routing\u002F01.nestjs-philosophy",{"title":4280,"path":4281,"stem":4282},"Три стовпи архітектури: модулі, контролери, провайдери","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fthree-pillars","18.web-development\u002F07.nestjs-controllers-routing\u002F02.three-pillars",{"title":4284,"path":4285,"stem":4286},"Інверсія керування (IoC) та ін","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fioc-and-di","18.web-development\u002F07.nestjs-controllers-routing\u002F03.ioc-and-di",{"title":4288,"path":4289,"stem":4290},"Встановлення NestJS CLI та створення проєкту","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fnestjs-cli-setup","18.web-development\u002F07.nestjs-controllers-routing\u002F04.nestjs-cli-setup",{"title":4292,"path":4293,"stem":4294},"Структура проєкту NestJS та конвенції","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fproject-structure","18.web-development\u002F07.nestjs-controllers-routing\u002F05.project-structure",{"title":4296,"path":4297,"stem":4298},"Контролери: основи маршрутизації","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fcontrollers-basics","18.web-development\u002F07.nestjs-controllers-routing\u002F06.controllers-basics",{"title":4300,"path":4301,"stem":4302},"Декоратори маршрутизації HTTP-методів","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Froute-decorators","18.web-development\u002F07.nestjs-controllers-routing\u002F07.route-decorators",{"title":4304,"path":4305,"stem":4306},"Параметри маршруту та декоратор @Param","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Froute-parameters","18.web-development\u002F07.nestjs-controllers-routing\u002F08.route-parameters",{"title":4308,"path":4309,"stem":4310},"Query-параметри та декоратор @Query","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fquery-parameters","18.web-development\u002F07.nestjs-controllers-routing\u002F09.query-parameters",{"title":4312,"path":4313,"stem":4314},"Тіло запиту та декоратор @Body","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Frequest-body","18.web-development\u002F07.nestjs-controllers-routing\u002F10.request-body",{"title":4316,"path":4317,"stem":4318},"Робота з заголовками запиту та відповіді","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fheaders-decorators","18.web-development\u002F07.nestjs-controllers-routing\u002F11.headers-decorators",{"title":4320,"path":4321,"stem":4322},"Data Transfer Objects (DTO): визначення та призначення","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fdto-introduction","18.web-development\u002F07.nestjs-controllers-routing\u002F12.dto-introduction",{"title":4324,"path":4325,"stem":4326},"Об'єкти Request та Response","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Frequest-response-objects","18.web-development\u002F07.nestjs-controllers-routing\u002F13.request-response-objects",{"title":4328,"path":4329,"stem":4330},"HTTP-статус коди та декоратор @HttpCode","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fhttp-status-codes","18.web-development\u002F07.nestjs-controllers-routing\u002F14.http-status-codes",{"title":4332,"path":4333,"stem":4334},"Перенаправлення (Redirects) та декоратор @Redirect","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fredirects","18.web-development\u002F07.nestjs-controllers-routing\u002F15.redirects",{"title":4336,"path":4337,"stem":4338},"Асинхронні обробники та Observables","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fasync-handlers","18.web-development\u002F07.nestjs-controllers-routing\u002F16.async-handlers",{"title":4340,"path":4341,"stem":4342},"Маршрутизація за піддоменами та версіонування API","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fsub-domain-routing","18.web-development\u002F07.nestjs-controllers-routing\u002F17.sub-domain-routing",{"title":4344,"path":4345,"stem":4346},"Області видимості контролерів (Scopes)","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fcontroller-scopes","18.web-development\u002F07.nestjs-controllers-routing\u002F18.controller-scopes",{"title":4348,"path":4349,"stem":4350},"Основні команди NestJS CLI","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fnestjs-cli-commands","18.web-development\u002F07.nestjs-controllers-routing\u002F19.nestjs-cli-commands",{"title":4352,"path":4353,"stem":4354},"Практичний приклад: створення CRUD-контролера","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fcrud-example","18.web-development\u002F07.nestjs-controllers-routing\u002F20.crud-example",{"title":4356,"path":4357,"stem":4358},"Тестування контролерів","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Ftesting-controllers","18.web-development\u002F07.nestjs-controllers-routing\u002F21.testing-controllers",{"title":4360,"path":4361,"stem":4362},"Best Practices для контролерів та маршрутизації","\u002Fweb-development\u002Fnestjs-controllers-routing\u002Fbest-practices","18.web-development\u002F07.nestjs-controllers-routing\u002F22.best-practices",{"title":4364,"icon":4365,"path":4366,"stem":4367,"children":4368,"page":59},"Тема 8. Провайдери, сервіси та модульна система NestJS","i-lucide-package","\u002Fweb-development\u002Fnestjs-providers-modules","18.web-development\u002F08.nestjs-providers-modules",[4369,4373,4377,4381,4385,4389,4393,4397,4401,4405,4409,4413,4417,4421,4425],{"title":4370,"path":4371,"stem":4372},"Концепція провайдерів у NestJS","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fproviders-concept","18.web-development\u002F08.nestjs-providers-modules\u002F01.providers-concept",{"title":4374,"path":4375,"stem":4376},"Сервіси: інкапсуляція бізнес-логіки","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fservices-business-logic","18.web-development\u002F08.nestjs-providers-modules\u002F02.services-business-logic",{"title":4378,"path":4379,"stem":4380},"Практика ін","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fdependency-injection-practice","18.web-development\u002F08.nestjs-providers-modules\u002F03.dependency-injection-practice",{"title":4382,"path":4383,"stem":4384},"Custom Providers: useValue, useClass, useFactory, useExisting","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fcustom-providers","18.web-development\u002F08.nestjs-providers-modules\u002F04.custom-providers",{"title":4386,"path":4387,"stem":4388},"Injection Tokens: рядкові та символьні токени","\u002Fweb-development\u002Fnestjs-providers-modules\u002Finjection-tokens","18.web-development\u002F08.nestjs-providers-modules\u002F05.injection-tokens",{"title":4390,"path":4391,"stem":4392},"Опціональні провайдери та декоратор @Optional","\u002Fweb-development\u002Fnestjs-providers-modules\u002Foptional-providers","18.web-development\u002F08.nestjs-providers-modules\u002F07.optional-providers",{"title":4394,"path":4395,"stem":4396},"Структура модулів: imports, controllers, providers, exports","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fmodules-structure","18.web-development\u002F08.nestjs-providers-modules\u002F08.modules-structure",{"title":4398,"path":4399,"stem":4400},"Feature Modules: ізоляція функціональності","\u002Fweb-development\u002Fnestjs-providers-modules\u002Ffeature-modules","18.web-development\u002F08.nestjs-providers-modules\u002F09.feature-modules",{"title":4402,"path":4403,"stem":4404},"Shared Modules: перевикористання провайдерів","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fshared-modules","18.web-development\u002F08.nestjs-providers-modules\u002F10.shared-modules",{"title":4406,"path":4407,"stem":4408},"Global Modules та декоратор @Global","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fglobal-modules","18.web-development\u002F08.nestjs-providers-modules\u002F11.global-modules",{"title":4410,"path":4411,"stem":4412},"Dynamic Modules: конфігурація під час виконання","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fdynamic-modules","18.web-development\u002F08.nestjs-providers-modules\u002F12.dynamic-modules",{"title":4414,"path":4415,"stem":4416},"Циклічні залежності та forwardRef","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fcircular-dependencies","18.web-development\u002F08.nestjs-providers-modules\u002F13.circular-dependencies",{"title":4418,"path":4419,"stem":4420},"Lifecycle Hooks: хуки життєвого циклу","\u002Fweb-development\u002Fnestjs-providers-modules\u002Flifecycle-hooks","18.web-development\u002F08.nestjs-providers-modules\u002F14.lifecycle-hooks",{"title":4422,"path":4423,"stem":4424},"ModuleRef: динамічний доступ до провайдерів","\u002Fweb-development\u002Fnestjs-providers-modules\u002Fmodule-reference","18.web-development\u002F08.nestjs-providers-modules\u002F15.module-reference",{"title":4426,"path":4427,"stem":4428},"Тестування сервісів та провайдерів","\u002Fweb-development\u002Fnestjs-providers-modules\u002Ftesting-services","18.web-development\u002F08.nestjs-providers-modules\u002F16.testing-services",{"title":4430,"icon":4431,"path":4432,"stem":4433,"children":4434,"page":59},"Тема 9. Валідація даних та конвеєр обробки запитів у NestJS","i-lucide-filter","\u002Fweb-development\u002Fnestjs-validation-pipeline","18.web-development\u002F09.nestjs-validation-pipeline",[4435,4439,4443,4447,4451,4455,4459,4463,4467,4471,4475,4479,4483,4487,4491,4495,4499,4503,4507],{"title":4436,"path":4437,"stem":4438},"Request Pipeline: конвеєр обробки запитів","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Frequest-pipeline","18.web-development\u002F09.nestjs-validation-pipeline\u002F01.request-pipeline",{"title":4440,"path":4441,"stem":4442},"Pipes: концепція трансформації та валідації","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fpipes-concept","18.web-development\u002F09.nestjs-validation-pipeline\u002F02.pipes-concept",{"title":4444,"path":4445,"stem":4446},"Вбудовані pipes: ParseIntPipe, ParseBoolPipe, ParseUUIDPipe","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fbuilt-in-pipes","18.web-development\u002F09.nestjs-validation-pipeline\u002F03.built-in-pipes",{"title":4448,"path":4449,"stem":4450},"ValidationPipe: автоматична валідація DTO","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fvalidation-pipe","18.web-development\u002F09.nestjs-validation-pipeline\u002F04.validation-pipe",{"title":4452,"path":4453,"stem":4454},"Декоратори class-validator для DTO","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fclass-validator-decorators","18.web-development\u002F09.nestjs-validation-pipeline\u002F05.class-validator-decorators",{"title":4456,"path":4457,"stem":4458},"Створення кастомних валідаторів","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fcustom-validators","18.web-development\u002F09.nestjs-validation-pipeline\u002F06.custom-validators",{"title":4460,"path":4461,"stem":4462},"Створення власних Pipes","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fcustom-pipes","18.web-development\u002F09.nestjs-validation-pipeline\u002F07.custom-pipes",{"title":4464,"path":4465,"stem":4466},"Основи Middleware","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fmiddleware-basics","18.web-development\u002F09.nestjs-validation-pipeline\u002F08.middleware-basics",{"title":4468,"path":4469,"stem":4470},"Практичні приклади Middleware","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fmiddleware-examples","18.web-development\u002F09.nestjs-validation-pipeline\u002F09.middleware-examples",{"title":4472,"path":4473,"stem":4474},"Guards: захисні перехоплювачі доступу","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fguards-concept","18.web-development\u002F09.nestjs-validation-pipeline\u002F10.guards-concept",{"title":4476,"path":4477,"stem":4478},"Створення кастомних Guards","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fcustom-guards","18.web-development\u002F09.nestjs-validation-pipeline\u002F11.custom-guards",{"title":4480,"path":4481,"stem":4482},"Interceptors: перехоплення та трансформація відповідей","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Finterceptors-concept","18.web-development\u002F09.nestjs-validation-pipeline\u002F12.interceptors-concept",{"title":4484,"path":4485,"stem":4486},"Практичні приклади Interceptors","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Finterceptor-examples","18.web-development\u002F09.nestjs-validation-pipeline\u002F13.interceptor-examples",{"title":4488,"path":4489,"stem":4490},"Exception Filters: обробка виключень","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fexception-filters","18.web-development\u002F09.nestjs-validation-pipeline\u002F14.exception-filters",{"title":4492,"path":4493,"stem":4494},"Custom Exception Filters: спеціалізовані фільтри","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fcustom-exception-filters","18.web-development\u002F09.nestjs-validation-pipeline\u002F15.custom-exception-filters",{"title":4496,"path":4497,"stem":4498},"Execution Context: контекст виконання","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fexecution-context","18.web-development\u002F09.nestjs-validation-pipeline\u002F16.execution-context",{"title":4500,"path":4501,"stem":4502},"Custom Decorators: власні декоратори","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fcustom-decorators","18.web-development\u002F09.nestjs-validation-pipeline\u002F17.custom-decorators",{"title":4504,"path":4505,"stem":4506},"Global Components: глобальні компоненти","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fglobal-components","18.web-development\u002F09.nestjs-validation-pipeline\u002F18.global-components",{"title":4508,"path":4509,"stem":4510},"Pipeline Best Practices: найкращі практики","\u002Fweb-development\u002Fnestjs-validation-pipeline\u002Fpipeline-best-practices","18.web-development\u002F09.nestjs-validation-pipeline\u002F19.pipeline-best-practices",{"title":4512,"icon":2821,"path":4513,"stem":4514,"children":4515,"page":59},"Інтеграція реляційних баз даних засобами TypeORM","\u002Fweb-development\u002Ftypeorm-integration","18.web-development\u002F10.typeorm-integration",[4516,4520,4524,4528,4532,4536,4540],{"title":4517,"path":4518,"stem":4519},"Робота з базами даних у Node.js через нативні драйвери","\u002Fweb-development\u002Ftypeorm-integration\u002F01-nodejs-database-drivers","18.web-development\u002F10.typeorm-integration\u002F01-nodejs-database-drivers",{"title":4521,"path":4522,"stem":4523},"ORM та знайомство з TypeORM","\u002Fweb-development\u002Ftypeorm-integration\u002F02-orm-and-typeorm-intro","18.web-development\u002F10.typeorm-integration\u002F02-orm-and-typeorm-intro",{"title":4525,"path":4526,"stem":4527},"Налаштування TypeORM у NestJS проєкті","\u002Fweb-development\u002Ftypeorm-integration\u002F03-typeorm-setup-nestjs","18.web-development\u002F10.typeorm-integration\u002F03-typeorm-setup-nestjs",{"title":4529,"path":4530,"stem":4531},"Entity класи та декоратори TypeORM","\u002Fweb-development\u002Ftypeorm-integration\u002F04-entities-and-decorators","18.web-development\u002F10.typeorm-integration\u002F04-entities-and-decorators",{"title":4533,"path":4534,"stem":4535},"Repository Pattern та CRUD операції","\u002Fweb-development\u002Ftypeorm-integration\u002F05-repository-pattern-crud","18.web-development\u002F10.typeorm-integration\u002F05-repository-pattern-crud",{"title":4537,"path":4538,"stem":4539},"Пагінація та фільтрація даних","\u002Fweb-development\u002Ftypeorm-integration\u002F06-pagination-filtering","18.web-development\u002F10.typeorm-integration\u002F06-pagination-filtering",{"title":4541,"path":4542,"stem":4543},"QueryBuilder для складних запитів","\u002Fweb-development\u002Ftypeorm-integration\u002F07-query-builder","18.web-development\u002F10.typeorm-integration\u002F07-query-builder",{"title":4545,"icon":4546,"path":4547,"stem":4548,"children":4549,"page":59},"Зв'язки між сутностями, міграції та оптимізація запитів","i-lucide-git-branch","\u002Fweb-development\u002Fentity-relations-migrations","18.web-development\u002F11.entity-relations-migrations",[4550,4554,4558,4562,4566],{"title":4551,"path":4552,"stem":4553},"Зв'язки One-to-Many та Many-to-One","\u002Fweb-development\u002Fentity-relations-migrations\u002F01-one-to-many-many-to-one","18.web-development\u002F11.entity-relations-migrations\u002F01-one-to-many-many-to-one",{"title":4555,"path":4556,"stem":4557},"Зв'язки One-to-One та Many-to-Many","\u002Fweb-development\u002Fentity-relations-migrations\u002F02-one-to-one-many-to-many","18.web-development\u002F11.entity-relations-migrations\u002F02-one-to-one-many-to-many",{"title":4559,"path":4560,"stem":4561},"Керування міграціями бази даних","\u002Fweb-development\u002Fentity-relations-migrations\u002F03-migrations-management","18.web-development\u002F11.entity-relations-migrations\u002F03-migrations-management",{"title":4563,"path":4564,"stem":4565},"Транзакції у TypeORM","\u002Fweb-development\u002Fentity-relations-migrations\u002F04-transactions","18.web-development\u002F11.entity-relations-migrations\u002F04-transactions",{"title":4567,"path":4568,"stem":4569,"children":4570},"Індекси та оптимізація запитів","\u002Fweb-development\u002Fentity-relations-migrations\u002F05-indexes-optimization","18.web-development\u002F11.entity-relations-migrations\u002F05-indexes-optimization",[4571],{"title":4567,"path":4568,"stem":4569},{"title":4573,"icon":4574,"path":4575,"stem":4576,"children":4577,"page":59},"Механізми автентифікації у вебзастосунках","i-lucide-key","\u002Fweb-development\u002Fauthentication","18.web-development\u002F12.authentication",[4578,4582,4586,4590,4594,4598,4602,4606,4610],{"title":4579,"path":4580,"stem":4581},"Автентифікація vs Авторизація","\u002Fweb-development\u002Fauthentication\u002F01-authentication-vs-authorization","18.web-development\u002F12.authentication\u002F01-authentication-vs-authorization",{"title":4583,"path":4584,"stem":4585},"Стратегії автентифікації","\u002Fweb-development\u002Fauthentication\u002F02-authentication-strategies","18.web-development\u002F12.authentication\u002F02-authentication-strategies",{"title":4587,"path":4588,"stem":4589},"Автентифікація на основі сесій","\u002Fweb-development\u002Fauthentication\u002F03-session-based-authentication","18.web-development\u002F12.authentication\u002F03-session-based-authentication",{"title":4591,"path":4592,"stem":4593},"Структура JSON Web Token (JWT)","\u002Fweb-development\u002Fauthentication\u002F04-jwt-structure","18.web-development\u002F12.authentication\u002F04-jwt-structure",{"title":4595,"path":4596,"stem":4597},"Інтеграція JWT у NestJS","\u002Fweb-development\u002Fauthentication\u002F05-nestjs-jwt-integration","18.web-development\u002F12.authentication\u002F05-nestjs-jwt-integration",{"title":4599,"path":4600,"stem":4601},"Passport.js стратегії у NestJS","\u002Fweb-development\u002Fauthentication\u002F06-passport-strategies","18.web-development\u002F12.authentication\u002F06-passport-strategies",{"title":4603,"path":4604,"stem":4605},"Безпечне зберігання паролів: хешування та криптографічний захист","\u002Fweb-development\u002Fauthentication\u002F07-password-hashing","18.web-development\u002F12.authentication\u002F07-password-hashing",{"title":4607,"path":4608,"stem":4609},"Refresh Token та безпечне оновлення доступу","\u002Fweb-development\u002Fauthentication\u002F08-refresh-tokens","18.web-development\u002F12.authentication\u002F08-refresh-tokens",{"title":4611,"path":4612,"stem":4613},"OAuth 2.0 та OpenID Connect: делегована автентифікація","\u002Fweb-development\u002Fauthentication\u002F09-oauth2-openid","18.web-development\u002F12.authentication\u002F09-oauth2-openid",{"title":4615,"icon":4616,"path":4617,"stem":4618,"children":4619,"page":59},"Авторизація та безпека серверних застосунків","i-lucide-shield","\u002Fweb-development\u002Fauthorization-security","18.web-development\u002F13.authorization-security",[4620,4624,4628,4632,4636,4640,4644,4648,4652,4656],{"title":4621,"path":4622,"stem":4623},"Моделі авторизації","\u002Fweb-development\u002Fauthorization-security\u002F01-authorization-models","18.web-development\u002F13.authorization-security\u002F01-authorization-models",{"title":4625,"path":4626,"stem":4627},"Реалізація RBAC у NestJS","\u002Fweb-development\u002Fauthorization-security\u002F02-rbac-implementation","18.web-development\u002F13.authorization-security\u002F02-rbac-implementation",{"title":4629,"path":4630,"stem":4631},"Permission-Based Access Control","\u002Fweb-development\u002Fauthorization-security\u002F03-permission-based-access","18.web-development\u002F13.authorization-security\u002F03-permission-based-access",{"title":4633,"path":4634,"stem":4635},"ABAC та бібліотека CASL","\u002Fweb-development\u002Fauthorization-security\u002F04-abac-casl","18.web-development\u002F13.authorization-security\u002F04-abac-casl",{"title":4637,"path":4638,"stem":4639},"Кастомні декоратори та метадані","\u002Fweb-development\u002Fauthorization-security\u002F05-custom-decorators-metadata","18.web-development\u002F13.authorization-security\u002F05-custom-decorators-metadata",{"title":4641,"path":4642,"stem":4643},"Конфігурація CORS","\u002Fweb-development\u002Fauthorization-security\u002F06-cors-configuration","18.web-development\u002F13.authorization-security\u002F06-cors-configuration",{"title":4645,"path":4646,"stem":4647},"Захист через HTTP Security Headers (Helmet)","\u002Fweb-development\u002Fauthorization-security\u002F07-helmet-security-headers","18.web-development\u002F13.authorization-security\u002F07-helmet-security-headers",{"title":4649,"path":4650,"stem":4651},"Rate Limiting та Throttling","\u002Fweb-development\u002Fauthorization-security\u002F08-rate-limiting-throttling","18.web-development\u002F13.authorization-security\u002F08-rate-limiting-throttling",{"title":4653,"path":4654,"stem":4655},"Захист від поширених атак","\u002Fweb-development\u002Fauthorization-security\u002F09-common-attacks-protection","18.web-development\u002F13.authorization-security\u002F09-common-attacks-protection",{"title":4657,"path":4658,"stem":4659},"HTTPS у продакшені","\u002Fweb-development\u002Fauthorization-security\u002F10-https-production","18.web-development\u002F13.authorization-security\u002F10-https-production",{"title":4661,"icon":871,"path":4662,"stem":4663,"children":4664,"page":59},"Комунікація у реальному часі, нотифікації та фонові задачі","\u002Fweb-development\u002Frealtime-notifications-jobs","18.web-development\u002F14.realtime-notifications-jobs",[4665,4669,4673,4677,4681,4685,4688,4691,4695,4699],{"title":4666,"path":4667,"stem":4668},"Методи комунікації у реальному часі","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F01-realtime-communication-methods","18.web-development\u002F14.realtime-notifications-jobs\u002F01-realtime-communication-methods",{"title":4670,"path":4671,"stem":4672},"WebSocket Gateway у NestJS","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F02-websocket-gateway","18.web-development\u002F14.realtime-notifications-jobs\u002F02-websocket-gateway",{"title":4674,"path":4675,"stem":4676},"Lifecycle та Rooms у WebSocket","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F03-websocket-lifecycle-rooms","18.web-development\u002F14.realtime-notifications-jobs\u002F03-websocket-lifecycle-rooms",{"title":4678,"path":4679,"stem":4680},"Server-Sent Events (SSE)","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F04-server-sent-events","18.web-development\u002F14.realtime-notifications-jobs\u002F04-server-sent-events",{"title":4682,"path":4683,"stem":4684},"Архітектура системи нотифікацій","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F05-notification-system","18.web-development\u002F14.realtime-notifications-jobs\u002F05-notification-system",{"title":904,"path":4686,"stem":4687},"\u002Fweb-development\u002Frealtime-notifications-jobs\u002F06-email-notifications","18.web-development\u002F14.realtime-notifications-jobs\u002F06-email-notifications",{"title":900,"path":4689,"stem":4690},"\u002Fweb-development\u002Frealtime-notifications-jobs\u002F07-web-push-notifications","18.web-development\u002F14.realtime-notifications-jobs\u002F07-web-push-notifications",{"title":4692,"path":4693,"stem":4694},"Фонові задачі та черги","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F08-background-jobs-queues","18.web-development\u002F14.realtime-notifications-jobs\u002F08-background-jobs-queues",{"title":4696,"path":4697,"stem":4698},"Планувальники та Cron jobs","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F09-schedulers-cron","18.web-development\u002F14.realtime-notifications-jobs\u002F09-schedulers-cron",{"title":4700,"path":4701,"stem":4702},"Практичні сценарії застосування","\u002Fweb-development\u002Frealtime-notifications-jobs\u002F10-practical-scenarios","18.web-development\u002F14.realtime-notifications-jobs\u002F10-practical-scenarios",{"title":4704,"icon":4705,"path":4706,"stem":4707,"children":4708,"page":59},"Тестування, документування та розгортання застосунків","i-lucide-rocket","\u002Fweb-development\u002Ftesting-documentation-deployment","18.web-development\u002F15.testing-documentation-deployment",[4709,4713,4717,4721,4725,4729,4733,4737,4741,4745],{"title":4710,"path":4711,"stem":4712},"Піраміда тестування та стратегія","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F01-testing-pyramid-strategy","18.web-development\u002F15.testing-documentation-deployment\u002F01-testing-pyramid-strategy",{"title":4714,"path":4715,"stem":4716},"Основи Jest у NestJS","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F02-jest-nestjs-basics","18.web-development\u002F15.testing-documentation-deployment\u002F02-jest-nestjs-basics",{"title":4718,"path":4719,"stem":4720},"Unit-тестування сервісів","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F03-unit-testing-services","18.web-development\u002F15.testing-documentation-deployment\u002F03-unit-testing-services",{"title":4722,"path":4723,"stem":4724},"E2E тестування та покриття коду","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F04-e2e-testing-coverage","18.web-development\u002F15.testing-documentation-deployment\u002F04-e2e-testing-coverage",{"title":4726,"path":4727,"stem":4728},"Swagger, OpenAPI, Scalar та Arazzo","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F05-swagger-openapi","18.web-development\u002F15.testing-documentation-deployment\u002F05-swagger-openapi",{"title":4730,"path":4731,"stem":4732},"Керування конфігурацією","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F06-configuration-management","18.web-development\u002F15.testing-documentation-deployment\u002F06-configuration-management",{"title":4734,"path":4735,"stem":4736},"Docker та контейнеризація","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F07-docker-containerization","18.web-development\u002F15.testing-documentation-deployment\u002F07-docker-containerization",{"title":4738,"path":4739,"stem":4740},"CI\u002FCD Pipelines","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F08-cicd-pipelines","18.web-development\u002F15.testing-documentation-deployment\u002F08-cicd-pipelines",{"title":4742,"path":4743,"stem":4744},"Логування та моніторинг","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F09-logging-monitoring","18.web-development\u002F15.testing-documentation-deployment\u002F09-logging-monitoring",{"title":4746,"path":4747,"stem":4748},"Серіалізація та компресія","\u002Fweb-development\u002Ftesting-documentation-deployment\u002F10-serialization-compression","18.web-development\u002F15.testing-documentation-deployment\u002F10-serialization-compression",{"title":4750,"icon":4751,"path":4752,"stem":4753,"children":4754,"page":59},"AI Core: мислення AI","i-lucide-brain","\u002Fai-core","19.ai-core",[4755,4796,4845,4883],{"title":4756,"icon":4705,"path":4757,"stem":4758,"children":4759,"page":59},"Вхід у професію AI Native Developer","\u002Fai-core\u002Fai-native-developer","19.ai-core\u002F01.ai-native-developer",[4760,4764,4768,4772,4776,4780,4784,4788,4792],{"title":4761,"path":4762,"stem":4763},"Вступ до професії розробника цифрових продуктів","\u002Fai-core\u002Fai-native-developer\u002Fdigital-products","19.ai-core\u002F01.ai-native-developer\u002F01.digital-products",{"title":4765,"path":4766,"stem":4767},"Професія розробника програмного забезпечення","\u002Fai-core\u002Fai-native-developer\u002Fsoftware-developer","19.ai-core\u002F01.ai-native-developer\u002F02.software-developer",{"title":4769,"path":4770,"stem":4771},"Професія AI Native Developer","\u002Fai-core\u002Fai-native-developer\u002Fai-native-developer","19.ai-core\u002F01.ai-native-developer\u002F03.ai-native-developer",{"title":4773,"path":4774,"stem":4775},"Вплив AI на розробку програмного забезпечення","\u002Fai-core\u002Fai-native-developer\u002Fai-impact-on-development","19.ai-core\u002F01.ai-native-developer\u002F04.ai-impact-on-development",{"title":4777,"path":4778,"stem":4779},"Життєвий цикл цифрового продукту","\u002Fai-core\u002Fai-native-developer\u002Fproduct-lifecycle","19.ai-core\u002F01.ai-native-developer\u002F05.product-lifecycle",{"title":4781,"path":4782,"stem":4783},"Застосування AI на етапах створення цифрового продукту","\u002Fai-core\u002Fai-native-developer\u002Fai-in-product-creation","19.ai-core\u002F01.ai-native-developer\u002F06.ai-in-product-creation",{"title":4785,"path":4786,"stem":4787},"Розподіл завдань між людиною та AI","\u002Fai-core\u002Fai-native-developer\u002Fhuman-vs-ai-tasks","19.ai-core\u002F01.ai-native-developer\u002F07.human-vs-ai-tasks",{"title":4789,"path":4790,"stem":4791},"Компетенції AI Native Developer","\u002Fai-core\u002Fai-native-developer\u002Fcompetencies","19.ai-core\u002F01.ai-native-developer\u002F08.competencies",{"title":4793,"path":4794,"stem":4795},"Карта професійного розвитку AI Native Developer","\u002Fai-core\u002Fai-native-developer\u002Fcareer-roadmap","19.ai-core\u002F01.ai-native-developer\u002F09.career-roadmap",{"title":4797,"icon":255,"path":4798,"stem":4799,"children":4800,"page":59},"Штучний інтелект і машинне навчання","\u002Fai-core\u002Fai-and-machine-learning","19.ai-core\u002F02.ai-and-machine-learning",[4801,4805,4809,4813,4817,4821,4825,4829,4833,4837,4841],{"title":4802,"path":4803,"stem":4804},"Штучний інтелект","\u002Fai-core\u002Fai-and-machine-learning\u002Fwhat-is-ai","19.ai-core\u002F02.ai-and-machine-learning\u002F01.what-is-ai",{"title":4806,"path":4807,"stem":4808},"Відмінність AI від інших програмних систем","\u002Fai-core\u002Fai-and-machine-learning\u002Fai-vs-automation","19.ai-core\u002F02.ai-and-machine-learning\u002F02.ai-vs-automation",{"title":4810,"path":4811,"stem":4812},"Завдання штучного інтелекту","\u002Fai-core\u002Fai-and-machine-learning\u002Fai-tasks","19.ai-core\u002F02.ai-and-machine-learning\u002F03.ai-tasks",{"title":4814,"path":4815,"stem":4816},"Machine Learning","\u002Fai-core\u002Fai-and-machine-learning\u002Fmachine-learning","19.ai-core\u002F02.ai-and-machine-learning\u002F04.machine-learning",{"title":4818,"path":4819,"stem":4820},"Machine Learning Workflow","\u002Fai-core\u002Fai-and-machine-learning\u002Fml-workflow","19.ai-core\u002F02.ai-and-machine-learning\u002F05.ml-workflow",{"title":4822,"path":4823,"stem":4824},"Типи машинного навчання","\u002Fai-core\u002Fai-and-machine-learning\u002Fml-types","19.ai-core\u002F02.ai-and-machine-learning\u002F06.ml-types",{"title":4826,"path":4827,"stem":4828},"Generative AI","\u002Fai-core\u002Fai-and-machine-learning\u002Fgenerative-ai","19.ai-core\u002F02.ai-and-machine-learning\u002F07.generative-ai",{"title":4830,"path":4831,"stem":4832},"Типи контенту, створюваного AI","\u002Fai-core\u002Fai-and-machine-learning\u002Fai-content-types","19.ai-core\u002F02.ai-and-machine-learning\u002F08.ai-content-types",{"title":4834,"path":4835,"stem":4836},"Великі мовні моделі","\u002Fai-core\u002Fai-and-machine-learning\u002Flarge-language-models","19.ai-core\u002F02.ai-and-machine-learning\u002F09.large-language-models",{"title":4838,"path":4839,"stem":4840},"Можливості та обмеження Generative AI","\u002Fai-core\u002Fai-and-machine-learning\u002Fcapabilities-and-limitations","19.ai-core\u002F02.ai-and-machine-learning\u002F10.capabilities-and-limitations",{"title":4842,"path":4843,"stem":4844},"Сучасні AI-асистенти","\u002Fai-core\u002Fai-and-machine-learning\u002Fmodern-ai-assistants","19.ai-core\u002F02.ai-and-machine-learning\u002F11.modern-ai-assistants",{"title":4846,"icon":4847,"path":4848,"stem":4849,"children":4850,"page":59},"Постановка завдань для AI: принципи створення промптів","i-lucide-message-square-text","\u002Fai-core\u002Fprompt-engineering","19.ai-core\u002F03.prompt-engineering",[4851,4855,4859,4863,4867,4871,4875,4879],{"title":4852,"path":4853,"stem":4854},"Промпт як інструмент","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-as-tool","19.ai-core\u002F03.prompt-engineering\u002F01.prompt-as-tool",{"title":4856,"path":4857,"stem":4858},"Принципи створення промптів","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-principles","19.ai-core\u002F03.prompt-engineering\u002F02.prompt-principles",{"title":4860,"path":4861,"stem":4862},"Структура промпта","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-structure","19.ai-core\u002F03.prompt-engineering\u002F03.prompt-structure",{"title":4864,"path":4865,"stem":4866},"Види промптів за типом задачі","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-types","19.ai-core\u002F03.prompt-engineering\u002F04.prompt-types",{"title":4868,"path":4869,"stem":4870},"Прийоми посилення промпта","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-enhancement","19.ai-core\u002F03.prompt-engineering\u002F05.prompt-enhancement",{"title":4872,"path":4873,"stem":4874},"Розбір і покращення промпта","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-analysis","19.ai-core\u002F03.prompt-engineering\u002F06.prompt-analysis",{"title":4876,"path":4877,"stem":4878},"Типові помилки під час створення промптів","\u002Fai-core\u002Fprompt-engineering\u002Fcommon-mistakes","19.ai-core\u002F03.prompt-engineering\u002F07.common-mistakes",{"title":4880,"path":4881,"stem":4882},"Практикум: особиста бібліотека промптів","\u002Fai-core\u002Fprompt-engineering\u002Fprompt-library","19.ai-core\u002F03.prompt-engineering\u002F08.prompt-library",{"title":4884,"icon":793,"path":4885,"stem":4886,"children":4887,"page":59},"Перевірка результатів, безпека та AI Native Workflow","\u002Fai-core\u002Fverification-security-workflow","19.ai-core\u002F04.verification-security-workflow",[4888,4892,4896,4900,4904,4908,4912,4916,4920],{"title":4889,"path":4890,"stem":4891},"Межі можливостей AI","\u002Fai-core\u002Fverification-security-workflow\u002Fai-limitations","19.ai-core\u002F04.verification-security-workflow\u002F01.ai-limitations",{"title":4893,"path":4894,"stem":4895},"Галюцинації AI","\u002Fai-core\u002Fverification-security-workflow\u002Fai-hallucinations","19.ai-core\u002F04.verification-security-workflow\u002F02.ai-hallucinations",{"title":4897,"path":4898,"stem":4899},"Критичне мислення під час роботи з AI","\u002Fai-core\u002Fverification-security-workflow\u002Fcritical-thinking","19.ai-core\u002F04.verification-security-workflow\u002F03.critical-thinking",{"title":4901,"path":4902,"stem":4903},"Перевірка результатів роботи AI","\u002Fai-core\u002Fverification-security-workflow\u002Fresult-verification","19.ai-core\u002F04.verification-security-workflow\u002F04.result-verification",{"title":4905,"path":4906,"stem":4907},"Захист даних під час роботи з AI","\u002Fai-core\u002Fverification-security-workflow\u002Fdata-protection","19.ai-core\u002F04.verification-security-workflow\u002F05.data-protection",{"title":4909,"path":4910,"stem":4911},"Авторське право та навчальна доброчесність","\u002Fai-core\u002Fverification-security-workflow\u002Fcopyright-integrity","19.ai-core\u002F04.verification-security-workflow\u002F06.copyright-integrity",{"title":4913,"path":4914,"stem":4915},"Відповідальне використання AI","\u002Fai-core\u002Fverification-security-workflow\u002Fresponsible-use","19.ai-core\u002F04.verification-security-workflow\u002F07.responsible-use",{"title":4917,"path":4918,"stem":4919},"AI Native Workflow","\u002Fai-core\u002Fverification-security-workflow\u002Fai-native-workflow","19.ai-core\u002F04.verification-security-workflow\u002F08.ai-native-workflow",{"title":4921,"path":4922,"stem":4923},"Застосування AI Native Workflow під час створення цифрового продукту","\u002Fai-core\u002Fverification-security-workflow\u002Fworkflow-in-practice","19.ai-core\u002F04.verification-security-workflow\u002F09.workflow-in-practice",{"title":4925,"icon":4926,"path":4927,"stem":4928,"children":4929,"page":59},"AI Developer: Vibe Coding Sprint","i-lucide-code-xml","\u002Fai-developer","20.ai-developer",[4930,4956,4978,4999],{"title":4931,"icon":4932,"path":4933,"stem":4934,"children":4935,"page":59},"Проєктування і чорнова версія","i-lucide-pencil-ruler","\u002Fai-developer\u002Fdraft-creation","20.ai-developer\u002F01.draft-creation",[4936,4940,4944,4948,4952],{"title":4937,"path":4938,"stem":4939},"Парадигма Vibe Coding Workflow","\u002Fai-developer\u002Fdraft-creation\u002Fvibe-coding-workflow","20.ai-developer\u002F01.draft-creation\u002F01.vibe-coding-workflow",{"title":4941,"path":4942,"stem":4943},"AI-середовище швидкої розробки","\u002Fai-developer\u002Fdraft-creation\u002Fai-ide-environment","20.ai-developer\u002F01.draft-creation\u002F02.ai-ide-environment",{"title":4945,"path":4946,"stem":4947},"Користувацьке завдання та межі першої версії","\u002Fai-developer\u002Fdraft-creation\u002Fproduct-scope-and-mvp","20.ai-developer\u002F01.draft-creation\u002F03.product-scope-and-mvp",{"title":4949,"path":4950,"stem":4951},"Архітектура інтерфейсу та стани застосунку","\u002Fai-developer\u002Fdraft-creation\u002Fapplication-architecture-and-states","20.ai-developer\u002F01.draft-creation\u002F04.application-architecture-and-states",{"title":4953,"path":4954,"stem":4955},"Генерація та фіксація чорнової версії","\u002Fai-developer\u002Fdraft-creation\u002Fgenerating-draft-version","20.ai-developer\u002F01.draft-creation\u002F05.generating-draft-version",{"title":4957,"icon":4958,"path":4959,"stem":4960,"children":4961,"page":59},"Перша робоча версія","i-lucide-play-circle","\u002Fai-developer\u002Ffirst-working-version","20.ai-developer\u002F02.first-working-version",[4962,4966,4970,4974],{"title":4963,"path":4964,"stem":4965},"Уточнення контексту проєкту для AI","\u002Fai-developer\u002Ffirst-working-version\u002Frefining-project-context","20.ai-developer\u002F02.first-working-version\u002F01.refining-project-context",{"title":4967,"path":4968,"stem":4969},"Стратегія завдань для AI-розробки","\u002Fai-developer\u002Ffirst-working-version\u002Fai-prompting-strategy","20.ai-developer\u002F02.first-working-version\u002F02.ai-prompting-strategy",{"title":4971,"path":4972,"stem":4973},"Доопрацювання до першої робочої версії","\u002Fai-developer\u002Ffirst-working-version\u002Frefining-to-working-version","20.ai-developer\u002F02.first-working-version\u002F03.refining-to-working-version",{"title":4975,"path":4976,"stem":4977},"Перевірка першої робочої версії","\u002Fai-developer\u002Ffirst-working-version\u002Ftesting-first-working-version","20.ai-developer\u002F02.first-working-version\u002F04.testing-first-working-version",{"title":4979,"icon":3028,"path":4980,"stem":4981,"children":4982,"page":59},"Ітерації, дебагінг та відновлення","\u002Fai-developer\u002Fiteration-debugging-recovery","20.ai-developer\u002F03.iteration-debugging-recovery",[4983,4987,4991,4995],{"title":4984,"path":4985,"stem":4986},"Управління точковими змінами продукту","\u002Fai-developer\u002Fiteration-debugging-recovery\u002Fchange-management","20.ai-developer\u002F03.iteration-debugging-recovery\u002F01.change-management",{"title":4988,"path":4989,"stem":4990},"Надійність інтерфейсу та обробка помилок","\u002Fai-developer\u002Fiteration-debugging-recovery\u002Fscenario-reliability-and-errors","20.ai-developer\u002F03.iteration-debugging-recovery\u002F02.scenario-reliability-and-errors",{"title":4992,"path":4993,"stem":4994},"Керування контекстом і збереження версій","\u002Fai-developer\u002Fiteration-debugging-recovery\u002Fproject-context-and-versions","20.ai-developer\u002F03.iteration-debugging-recovery\u002F03.project-context-and-versions",{"title":4996,"path":4997,"stem":4998},"Збої AI-розробки, ліміти та аварійне відновлення","\u002Fai-developer\u002Fiteration-debugging-recovery\u002Fai-breakdowns-and-recovery","20.ai-developer\u002F03.iteration-debugging-recovery\u002F04.ai-breakdowns-and-recovery",{"title":5000,"icon":5001,"path":5002,"stem":5003,"children":5004,"page":59},"Перевірка та завершення продукту","i-lucide-check-check","\u002Fai-developer\u002Fverification-and-completion","20.ai-developer\u002F04.verification-and-completion",[5005,5009,5013],{"title":5006,"path":5007,"stem":5008},"Комплексний аудит та підсумкове тестування","\u002Fai-developer\u002Fverification-and-completion\u002Ffinal-product-testing","20.ai-developer\u002F04.verification-and-completion\u002F01.final-product-testing",{"title":5010,"path":5011,"stem":5012},"Підготовка підсумкової версії коду","\u002Fai-developer\u002Fverification-and-completion\u002Fpreparing-release-version","20.ai-developer\u002F04.verification-and-completion\u002F02.preparing-release-version",{"title":5014,"path":5015,"stem":5016},"Демонстрація, публікація та критерії оцінювання","\u002Fai-developer\u002Fverification-and-completion\u002Fproduct-showcase-and-publishing","20.ai-developer\u002F04.verification-and-completion\u002F03.product-showcase-and-publishing",{"title":5018,"path":5019,"stem":5020,"children":5021,"page":59},"Tailwind","\u002Ftailwind","21.tailwind",[5022,5026,5030,5034,5038,5042,5046,5050,5054,5058,5062,5066],{"title":5023,"path":5024,"stem":5025},"Що таке Tailwind CSS і навіщо він потрібен","\u002Ftailwind\u002Ftailwind-intro-philosophy","21.tailwind\u002F01.tailwind-intro-philosophy",{"title":5027,"path":5028,"stem":5029},"Встановлення та налаштування Tailwind CSS v4","\u002Ftailwind\u002Ftailwind-installation-setup","21.tailwind\u002F02.tailwind-installation-setup",{"title":5031,"path":5032,"stem":5033},"Utility-класи: основи та система Tailwind","\u002Ftailwind\u002Ftailwind-utility-classes-core","21.tailwind\u002F03.tailwind-utility-classes-core",{"title":5035,"path":5036,"stem":5037},"Layout: Flexbox та Grid через Tailwind","\u002Ftailwind\u002Ftailwind-flexbox-grid","21.tailwind\u002F04.tailwind-flexbox-grid",{"title":5039,"path":5040,"stem":5041},"Кастомізація теми через @theme у Tailwind v4","\u002Ftailwind\u002Ftailwind-theme-customization","21.tailwind\u002F05.tailwind-theme-customization",{"title":5043,"path":5044,"stem":5045},"Варіанти: hover, focus, responsive, dark mode та нові v4","\u002Ftailwind\u002Ftailwind-variants-states","21.tailwind\u002F06.tailwind-variants-states",{"title":5047,"path":5048,"stem":5049},"Типографіка та система кольорів у Tailwind v4","\u002Ftailwind\u002Ftailwind-typography-colors","21.tailwind\u002F07.tailwind-typography-colors",{"title":5051,"path":5052,"stem":5053},"Компоненти та повторюваність: @apply, @utility та патерни","\u002Ftailwind\u002Ftailwind-components-patterns","21.tailwind\u002F08.tailwind-components-patterns",{"title":5055,"path":5056,"stem":5057},"Темна тема та система дизайн-токенів у Tailwind v4","\u002Ftailwind\u002Ftailwind-dark-mode-theming","21.tailwind\u002F09.tailwind-dark-mode-theming",{"title":5059,"path":5060,"stem":5061},"Довільні значення та контейнерні запити у Tailwind v4","\u002Ftailwind\u002Ftailwind-arbitrary-container-queries","21.tailwind\u002F10.tailwind-arbitrary-container-queries",{"title":5063,"path":5064,"stem":5065},"Анімації, трансформації та 3D у Tailwind v4","\u002Ftailwind\u002Ftailwind-animations-transforms","21.tailwind\u002F11.tailwind-animations-transforms",{"title":5067,"path":5068,"stem":5069},"Tailwind CLI, PostCSS та інтеграція з фреймворками","\u002Ftailwind\u002Ftailwind-cli-tooling","21.tailwind\u002F12.tailwind-cli-tooling",{"title":5071,"path":5072,"stem":5073},"Тестування компонентів діаграм","\u002Ftest-components","98.test-components",{"id":5075,"title":4563,"body":5076,"description":5208,"extension":18511,"links":18512,"meta":18513,"navigation":5661,"path":4564,"seo":18514,"stem":4565,"__hash__":18515},"docs\u002F18.web-development\u002F11.entity-relations-migrations\u002F04-transactions.md",{"type":5077,"value":5078,"toc":18438},"minimark",[5079,5083,5176,5179,5184,5189,5200,5297,5302,5305,5321,5326,5333,5338,5417,5424,5428,5434,5439,5449,5454,5598,5602,5612,5616,5704,5711,5715,5725,5730,5835,5842,5846,5856,5861,5875,5896,5900,5905,5908,5913,5916,5921,5924,5929,5932,5934,5938,5942,5949,5954,6253,6257,6264,6268,6275,6280,6494,6498,6501,6506,6807,6811,6822,6827,7113,7118,7121,7125,7128,7133,7397,7399,7403,7407,7417,7422,7527,7532,7922,7926,7932,7937,8007,8011,8017,8021,8159,8163,8219,8223,8235,8240,8318,8323,8403,8419,8423,8428,8753,8758,8941,8943,8947,8951,8961,9028,9033,9047,9051,9062,9067,9465,9477,9485,9519,9527,9561,9569,9596,9604,9657,9661,9666,9770,9775,9868,10008,10010,10014,10018,10027,10032,10060,10065,10091,10095,10100,10329,10335,10341,10363,10368,10395,10401,10406,10428,10433,10444,10450,10455,10477,10482,10492,10499,10510,10515,10615,10620,10777,10810,10815,11477,11479,11483,11487,11504,11583,11587,11600,11605,11751,11756,11764,11782,11786,11792,11797,11818,11823,11962,11969,11973,11981,11985,11991,11995,12017,12022,12170,12176,12181,12289,12303,12307,12315,12319,12329,12333,12355,12359,12370,12374,12550,12554,12562,12567,12581,12585,12590,12639,12643,12721,12726,12748,12762,12764,12768,12772,12779,12784,12879,12883,12892,12967,12972,13142,13146,13149,13279,13283,13294,13678,13682,13685,13858,13860,13864,13868,13874,13879,14109,14115,14123,14127,14132,14138,14143,14146,14151,14154,14158,14163,14170,14568,14573,14579,14748,14753,14760,14875,14879,14888,14893,15155,15159,15166,15278,15280,15284,15288,15295,15303,15307,15312,15484,15489,15652,15656,15662,15679,15683,15690,15695,15803,15808,15810,15814,15818,16376,16380,16899,16903,17461,17463,17467,17585,17587,17591,18434],[5080,5081,4563],"h1",{"id":5082},"транзакції-у-typeorm",[5084,5085,5086,5128],"card-group",{},[5087,5088,5091],"card",{"icon":5089,"title":5090},"i-lucide-target","🎯 Мета лекції",[5092,5093,5094,5103,5106,5118,5125],"ul",{},[5095,5096,5097,5098,5102],"li",{},"Опанувати концепцію транзакцій (",[5099,5100,5101],"em",{},"transactions",") як фундаментальний механізм забезпечення цілісності даних у багатокористувацьких системах.",[5095,5104,5105],{},"Вивчити ACID властивості транзакцій та їх критичну роль у фінансових операціях, створенні комплексних об'єктів та забезпеченні узгодженості даних.",[5095,5107,5108,5109,5113,5114,5117],{},"Навчитися використовувати TypeORM API для транзакцій: ",[5110,5111,5112],"code",{},"DataSource.transaction()"," для простих сценаріїв та ",[5110,5115,5116],{},"QueryRunner"," для ручного контролю commit\u002Frollback.",[5095,5119,5120,5121,5124],{},"Освоїти рівні ізоляції транзакцій (",[5099,5122,5123],{},"isolation levels",") та їх вплив на продуктивність і узгодженість даних у конкурентному середовищі.",[5095,5126,5127],{},"Зрозуміти deadlocks, їх причини та стратегії уникнення через правильний порядок блокування ресурсів та timeout налаштування.",[5087,5129,5131],{"icon":4574,"title":5130},"🔑 Ключові терміни",[5092,5132,5133,5140,5146,5152,5158,5164,5170],{},[5095,5134,5135,5139],{},[5136,5137,5138],"strong",{},"Transaction (Транзакція):"," послідовність операцій з БД, що виконується як атомарна одиниця роботи — або всі операції застосовуються, або жодна.",[5095,5141,5142,5145],{},[5136,5143,5144],{},"ACID:"," набір властивостей транзакцій, що гарантують надійність: Atomicity (атомарність), Consistency (узгодженість), Isolation (ізольованість), Durability (довговічність).",[5095,5147,5148,5151],{},[5136,5149,5150],{},"Commit (Фіксація):"," застосування всіх змін транзакції до БД назавжди.",[5095,5153,5154,5157],{},[5136,5155,5156],{},"Rollback (Відкат):"," скасування всіх змін транзакції, повернення БД до стану до початку транзакції.",[5095,5159,5160,5163],{},[5136,5161,5162],{},"Isolation Level (Рівень ізоляції):"," параметр транзакції, що визначає, наскільки зміни однієї транзакції видимі іншим конкурентним транзакціям.",[5095,5165,5166,5169],{},[5136,5167,5168],{},"Deadlock (Взаємне блокування):"," ситуація, коли дві або більше транзакцій чекають на звільнення ресурсів, заблокованих одна одною, що призводить до нескінченного очікування.",[5095,5171,5172,5175],{},[5136,5173,5174],{},"QueryRunner:"," об'єкт TypeORM для ручного керування транзакціями, з'єднаннями та виконання SQL-запитів.",[5177,5178],"hr",{},[5180,5181,5183],"h2",{"id":5182},"концепція-транзакцій","Концепція транзакцій",[5185,5186,5188],"h3",{"id":5187},"що-таке-транзакція-в-бд","Що таке транзакція в БД",[5190,5191,5192,5195,5196,5199],"p",{},[5136,5193,5194],{},"Транзакція"," — це логічна одиниця роботи з базою даних, що складається з однієї або кількох операцій (SELECT, INSERT, UPDATE, DELETE), які виконуються як ",[5136,5197,5198],{},"атомарне ціле",". Або всі операції у транзакції завершуються успішно і їх результати зберігаються у БД (commit), або всі операції скасовуються і БД залишається у попередньому стані (rollback).",[5201,5202,5203],"mermaid",{},[5204,5205,5209],"pre",{"className":5206,"code":5207,"language":5201,"meta":5208,"style":5208},"language-mermaid shiki shiki-themes light-plus dark-plus dark-plus","flowchart TD\n    A[Початок\u003Cbr\u002F>транзакції] --> B[Операція 1:\u003Cbr\u002F>UPDATE accounts\u003Cbr\u002F>SET balance = balance - 100]\n    B --> C[Операція 2:\u003Cbr\u002F>UPDATE accounts\u003Cbr\u002F>SET balance = balance + 100]\n    C --> D{Усі операції\u003Cbr\u002F>успішні?}\n    D -->|Так| E[COMMIT:\u003Cbr\u002F>Зберегти зміни]\n    D -->|Ні\u003Cbr\u002F>помилка| F[ROLLBACK:\u003Cbr\u002F>Відкотити зміни]\n    E --> G[БД оновлена]\n    F --> H[БД без змін]\n    \n    style A fill:#DBEAFE,stroke:#1d4ed8,color:#1e293b\n    style E fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n    style F fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n    style G fill:#D1FAE5,stroke:#16a34a,color:#1e293b\n    style H fill:#FEF3C7,stroke:#b45309,color:#1e293b\n","",[5110,5210,5211,5219,5225,5231,5237,5243,5249,5255,5261,5267,5273,5279,5285,5291],{"__ignoreMap":5208},[5212,5213,5216],"span",{"class":5214,"line":5215},"line",1,[5212,5217,5218],{},"flowchart TD\n",[5212,5220,5222],{"class":5214,"line":5221},2,[5212,5223,5224],{},"    A[Початок\u003Cbr\u002F>транзакції] --> B[Операція 1:\u003Cbr\u002F>UPDATE accounts\u003Cbr\u002F>SET balance = balance - 100]\n",[5212,5226,5228],{"class":5214,"line":5227},3,[5212,5229,5230],{},"    B --> C[Операція 2:\u003Cbr\u002F>UPDATE accounts\u003Cbr\u002F>SET balance = balance + 100]\n",[5212,5232,5234],{"class":5214,"line":5233},4,[5212,5235,5236],{},"    C --> D{Усі операції\u003Cbr\u002F>успішні?}\n",[5212,5238,5240],{"class":5214,"line":5239},5,[5212,5241,5242],{},"    D -->|Так| E[COMMIT:\u003Cbr\u002F>Зберегти зміни]\n",[5212,5244,5246],{"class":5214,"line":5245},6,[5212,5247,5248],{},"    D -->|Ні\u003Cbr\u002F>помилка| F[ROLLBACK:\u003Cbr\u002F>Відкотити зміни]\n",[5212,5250,5252],{"class":5214,"line":5251},7,[5212,5253,5254],{},"    E --> G[БД оновлена]\n",[5212,5256,5258],{"class":5214,"line":5257},8,[5212,5259,5260],{},"    F --> H[БД без змін]\n",[5212,5262,5264],{"class":5214,"line":5263},9,[5212,5265,5266],{},"    \n",[5212,5268,5270],{"class":5214,"line":5269},10,[5212,5271,5272],{},"    style A fill:#DBEAFE,stroke:#1d4ed8,color:#1e293b\n",[5212,5274,5276],{"class":5214,"line":5275},11,[5212,5277,5278],{},"    style E fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n",[5212,5280,5282],{"class":5214,"line":5281},12,[5212,5283,5284],{},"    style F fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n",[5212,5286,5288],{"class":5214,"line":5287},13,[5212,5289,5290],{},"    style G fill:#D1FAE5,stroke:#16a34a,color:#1e293b\n",[5212,5292,5294],{"class":5214,"line":5293},14,[5212,5295,5296],{},"    style H fill:#FEF3C7,stroke:#b45309,color:#1e293b\n",[5190,5298,5299],{},[5136,5300,5301],{},"Класичний приклад — переказ коштів:",[5190,5303,5304],{},"Уявіть переказ 100 грн з рахунку A на рахунок B. Ця операція складається з двох кроків:",[5306,5307,5308,5315],"ol",{},[5095,5309,5310,5311,5314],{},"Зняти 100 грн з рахунку A: ",[5110,5312,5313],{},"UPDATE accounts SET balance = balance - 100 WHERE id = A",".",[5095,5316,5317,5318,5314],{},"Додати 100 грн на рахунок B: ",[5110,5319,5320],{},"UPDATE accounts SET balance = balance + 100 WHERE id = B",[5190,5322,5323],{},[5136,5324,5325],{},"Без транзакції:",[5190,5327,5328,5329,5332],{},"Якщо після кроку 1 станеться збій (наприклад, відключення електроенергії), гроші ",[5136,5330,5331],{},"зникнуть"," — вони знялися з рахунку A, але не додалися на рахунок B.",[5190,5334,5335],{},[5136,5336,5337],{},"З транзакцією:",[5204,5339,5343],{"className":5340,"code":5341,"language":5342,"meta":5208,"style":5208},"language-sql shiki shiki-themes light-plus dark-plus dark-plus","BEGIN TRANSACTION;\nUPDATE accounts SET balance = balance - 100 WHERE id = 'A';\nUPDATE accounts SET balance = balance + 100 WHERE id = 'B';\nCOMMIT;\n","sql",[5110,5344,5345,5358,5388,5410],{"__ignoreMap":5208},[5212,5346,5347,5351,5354],{"class":5214,"line":5215},[5212,5348,5350],{"class":5349},"su1O8","BEGIN",[5212,5352,5353],{"class":5349}," TRANSACTION",[5212,5355,5357],{"class":5356},"sHH4Y",";\n",[5212,5359,5360,5363,5366,5369,5372,5376,5379,5382,5386],{"class":5214,"line":5221},[5212,5361,5362],{"class":5349},"UPDATE",[5212,5364,5365],{"class":5356}," accounts ",[5212,5367,5368],{"class":5349},"SET",[5212,5370,5371],{"class":5356}," balance = balance - ",[5212,5373,5375],{"class":5374},"sJj4R","100",[5212,5377,5378],{"class":5349}," WHERE",[5212,5380,5381],{"class":5356}," id = ",[5212,5383,5385],{"class":5384},"sbdoH","'A'",[5212,5387,5357],{"class":5356},[5212,5389,5390,5392,5394,5396,5399,5401,5403,5405,5408],{"class":5214,"line":5227},[5212,5391,5362],{"class":5349},[5212,5393,5365],{"class":5356},[5212,5395,5368],{"class":5349},[5212,5397,5398],{"class":5356}," balance = balance + ",[5212,5400,5375],{"class":5374},[5212,5402,5378],{"class":5349},[5212,5404,5381],{"class":5356},[5212,5406,5407],{"class":5384},"'B'",[5212,5409,5357],{"class":5356},[5212,5411,5412,5415],{"class":5214,"line":5233},[5212,5413,5414],{"class":5349},"COMMIT",[5212,5416,5357],{"class":5356},[5190,5418,5419,5420,5423],{},"Якщо будь-який крок завершиться помилкою, БД автоматично виконає ",[5110,5421,5422],{},"ROLLBACK",", і обидва рахунки залишаться у вихідному стані.",[5185,5425,5427],{"id":5426},"acid-властивості","ACID властивості",[5190,5429,5430,5433],{},[5136,5431,5432],{},"ACID"," — це акронім, що описує чотири ключові властивості транзакцій, які забезпечують надійність роботи з даними.",[5435,5436,5438],"h4",{"id":5437},"atomicity-атомарність","Atomicity (Атомарність)",[5190,5440,5441,5444,5445,5448],{},[5136,5442,5443],{},"Атомарність"," означає, що транзакція є ",[5136,5446,5447],{},"неподільною одиницею роботи"," — або всі операції у транзакції виконуються успішно, або жодна. Не існує проміжного стану, коли частина операцій застосована, а частина ні.",[5190,5450,5451],{},[5136,5452,5453],{},"Приклад:",[5204,5455,5459],{"className":5456,"code":5457,"language":5458,"meta":5208,"style":5208},"language-typescript shiki shiki-themes light-plus dark-plus dark-plus","await dataSource.transaction(async (manager) => {\n  await manager.update(Account, { id: 'A' }, { balance: () => 'balance - 100' }); \u002F\u002F ✅ Виконано\n  await manager.update(Account, { id: 'B' }, { balance: () => 'balance + 100' }); \u002F\u002F ❌ Помилка\n  \u002F\u002F Транзакція автоматично відкотиться — баланс рахунку A залишиться без змін\n});\n","typescript",[5110,5460,5461,5498,5549,5588,5593],{"__ignoreMap":5208},[5212,5462,5463,5467,5471,5473,5477,5480,5483,5486,5489,5492,5495],{"class":5214,"line":5215},[5212,5464,5466],{"class":5465},"s8xlr","await",[5212,5468,5470],{"class":5469},"siwwj"," dataSource",[5212,5472,5314],{"class":5356},[5212,5474,5476],{"class":5475},"s8Opu","transaction",[5212,5478,5479],{"class":5356},"(",[5212,5481,5482],{"class":5349},"async",[5212,5484,5485],{"class":5356}," (",[5212,5487,5488],{"class":5469},"manager",[5212,5490,5491],{"class":5356},") ",[5212,5493,5494],{"class":5349},"=>",[5212,5496,5497],{"class":5356}," {\n",[5212,5499,5500,5503,5506,5508,5511,5513,5516,5519,5522,5525,5528,5531,5534,5537,5539,5542,5545],{"class":5214,"line":5221},[5212,5501,5502],{"class":5465},"  await",[5212,5504,5505],{"class":5469}," manager",[5212,5507,5314],{"class":5356},[5212,5509,5510],{"class":5475},"update",[5212,5512,5479],{"class":5356},[5212,5514,5515],{"class":5469},"Account",[5212,5517,5518],{"class":5356},", { ",[5212,5520,5521],{"class":5469},"id:",[5212,5523,5524],{"class":5384}," 'A'",[5212,5526,5527],{"class":5356}," }, { ",[5212,5529,5530],{"class":5475},"balance",[5212,5532,5533],{"class":5469},":",[5212,5535,5536],{"class":5356}," () ",[5212,5538,5494],{"class":5349},[5212,5540,5541],{"class":5384}," 'balance - 100'",[5212,5543,5544],{"class":5356}," }); ",[5212,5546,5548],{"class":5547},"spJ8K","\u002F\u002F ✅ Виконано\n",[5212,5550,5551,5553,5555,5557,5559,5561,5563,5565,5567,5570,5572,5574,5576,5578,5580,5583,5585],{"class":5214,"line":5227},[5212,5552,5502],{"class":5465},[5212,5554,5505],{"class":5469},[5212,5556,5314],{"class":5356},[5212,5558,5510],{"class":5475},[5212,5560,5479],{"class":5356},[5212,5562,5515],{"class":5469},[5212,5564,5518],{"class":5356},[5212,5566,5521],{"class":5469},[5212,5568,5569],{"class":5384}," 'B'",[5212,5571,5527],{"class":5356},[5212,5573,5530],{"class":5475},[5212,5575,5533],{"class":5469},[5212,5577,5536],{"class":5356},[5212,5579,5494],{"class":5349},[5212,5581,5582],{"class":5384}," 'balance + 100'",[5212,5584,5544],{"class":5356},[5212,5586,5587],{"class":5547},"\u002F\u002F ❌ Помилка\n",[5212,5589,5590],{"class":5214,"line":5233},[5212,5591,5592],{"class":5547},"  \u002F\u002F Транзакція автоматично відкотиться — баланс рахунку A залишиться без змін\n",[5212,5594,5595],{"class":5214,"line":5239},[5212,5596,5597],{"class":5356},"});\n",[5435,5599,5601],{"id":5600},"consistency-узгодженість","Consistency (Узгодженість)",[5190,5603,5604,5607,5608,5611],{},[5136,5605,5606],{},"Узгодженість"," гарантує, що транзакція переводить БД з одного ",[5136,5609,5610],{},"валідного стану"," в інший валідний стан, дотримуючись всіх правил цілісності (constraints, тригери, cascades).",[5190,5613,5614],{},[5136,5615,5453],{},[5204,5617,5619],{"className":5340,"code":5618,"language":5342,"meta":5208,"style":5208},"-- Constraint: баланс не може бути від'ємним\nALTER TABLE accounts ADD CONSTRAINT check_balance_positive CHECK (balance >= 0);\n\nBEGIN TRANSACTION;\nUPDATE accounts SET balance = balance - 100 WHERE id = 'A';  -- Якщо баланс A \u003C 100, constraint порушується\nCOMMIT;  -- ❌ Транзакція відкатиться через порушення constraint\n",[5110,5620,5621,5626,5657,5663,5671,5695],{"__ignoreMap":5208},[5212,5622,5623],{"class":5214,"line":5215},[5212,5624,5625],{"class":5547},"-- Constraint: баланс не може бути від'ємним\n",[5212,5627,5628,5631,5634,5636,5639,5642,5645,5648,5651,5654],{"class":5214,"line":5221},[5212,5629,5630],{"class":5349},"ALTER",[5212,5632,5633],{"class":5349}," TABLE",[5212,5635,5365],{"class":5356},[5212,5637,5638],{"class":5349},"ADD",[5212,5640,5641],{"class":5349}," CONSTRAINT",[5212,5643,5644],{"class":5356}," check_balance_positive ",[5212,5646,5647],{"class":5349},"CHECK",[5212,5649,5650],{"class":5356}," (balance >= ",[5212,5652,5653],{"class":5374},"0",[5212,5655,5656],{"class":5356},");\n",[5212,5658,5659],{"class":5214,"line":5227},[5212,5660,5662],{"emptyLinePlaceholder":5661},true,"\n",[5212,5664,5665,5667,5669],{"class":5214,"line":5233},[5212,5666,5350],{"class":5349},[5212,5668,5353],{"class":5349},[5212,5670,5357],{"class":5356},[5212,5672,5673,5675,5677,5679,5681,5683,5685,5687,5689,5692],{"class":5214,"line":5239},[5212,5674,5362],{"class":5349},[5212,5676,5365],{"class":5356},[5212,5678,5368],{"class":5349},[5212,5680,5371],{"class":5356},[5212,5682,5375],{"class":5374},[5212,5684,5378],{"class":5349},[5212,5686,5381],{"class":5356},[5212,5688,5385],{"class":5384},[5212,5690,5691],{"class":5356},";  ",[5212,5693,5694],{"class":5547},"-- Якщо баланс A \u003C 100, constraint порушується\n",[5212,5696,5697,5699,5701],{"class":5214,"line":5245},[5212,5698,5414],{"class":5349},[5212,5700,5691],{"class":5356},[5212,5702,5703],{"class":5547},"-- ❌ Транзакція відкатиться через порушення constraint\n",[5190,5705,5706,5707,5710],{},"Транзакція ",[5136,5708,5709],{},"не може"," залишити БД у стані, що порушує правила цілісності даних.",[5435,5712,5714],{"id":5713},"isolation-ізольованість","Isolation (Ізольованість)",[5190,5716,5717,5720,5721,5724],{},[5136,5718,5719],{},"Ізольованість"," означає, що ",[5136,5722,5723],{},"конкурентні транзакції"," не заважають одна одній — зміни однієї транзакції не видимі іншим транзакціям до моменту commit.",[5190,5726,5727],{},[5136,5728,5729],{},"Приклад проблеми без ізоляції:",[5204,5731,5733],{"className":5456,"code":5732,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1: Переказ 100 грн з A на B\nBEGIN;\nUPDATE accounts SET balance = balance - 100 WHERE id = 'A';  \u002F\u002F balance A = 900\n-- (не завершена)\n\n\u002F\u002F Транзакція 2: Читання балансу A\nSELECT balance FROM accounts WHERE id = 'A';  \n\u002F\u002F ❓ Яке значення побачить транзакція 2: 1000 (старе) чи 900 (нове)?\n",[5110,5734,5735,5740,5747,5784,5798,5802,5807,5830],{"__ignoreMap":5208},[5212,5736,5737],{"class":5214,"line":5215},[5212,5738,5739],{"class":5547},"\u002F\u002F Транзакція 1: Переказ 100 грн з A на B\n",[5212,5741,5742,5745],{"class":5214,"line":5221},[5212,5743,5350],{"class":5744},"s-QsJ",[5212,5746,5357],{"class":5356},[5212,5748,5749,5751,5754,5757,5760,5763,5765,5768,5770,5772,5775,5777,5779,5781],{"class":5214,"line":5227},[5212,5750,5362],{"class":5744},[5212,5752,5753],{"class":5469}," accounts",[5212,5755,5756],{"class":5744}," SET",[5212,5758,5759],{"class":5469}," balance",[5212,5761,5762],{"class":5356}," = ",[5212,5764,5530],{"class":5469},[5212,5766,5767],{"class":5356}," - ",[5212,5769,5375],{"class":5374},[5212,5771,5378],{"class":5744},[5212,5773,5774],{"class":5469}," id",[5212,5776,5762],{"class":5356},[5212,5778,5385],{"class":5384},[5212,5780,5691],{"class":5356},[5212,5782,5783],{"class":5547},"\u002F\u002F balance A = 900\n",[5212,5785,5786,5789,5792,5795],{"class":5214,"line":5233},[5212,5787,5788],{"class":5356},"-- (",[5212,5790,5791],{"class":5469},"не",[5212,5793,5794],{"class":5469}," завершена",[5212,5796,5797],{"class":5356},")\n",[5212,5799,5800],{"class":5214,"line":5239},[5212,5801,5662],{"emptyLinePlaceholder":5661},[5212,5803,5804],{"class":5214,"line":5245},[5212,5805,5806],{"class":5547},"\u002F\u002F Транзакція 2: Читання балансу A\n",[5212,5808,5809,5812,5814,5817,5819,5821,5823,5825,5827],{"class":5214,"line":5251},[5212,5810,5811],{"class":5744},"SELECT",[5212,5813,5759],{"class":5469},[5212,5815,5816],{"class":5744}," FROM",[5212,5818,5753],{"class":5469},[5212,5820,5378],{"class":5744},[5212,5822,5774],{"class":5469},[5212,5824,5762],{"class":5356},[5212,5826,5385],{"class":5384},[5212,5828,5829],{"class":5356},";  \n",[5212,5831,5832],{"class":5214,"line":5257},[5212,5833,5834],{"class":5547},"\u002F\u002F ❓ Яке значення побачить транзакція 2: 1000 (старе) чи 900 (нове)?\n",[5190,5836,5837,5838,5841],{},"Рівень ізоляції визначає, чи побачить транзакція 2 незафіксовані зміни транзакції 1 (",[5136,5839,5840],{},"dirty read",").",[5435,5843,5845],{"id":5844},"durability-довговічність","Durability (Довговічність)",[5190,5847,5848,5851,5852,5855],{},[5136,5849,5850],{},"Довговічність"," гарантує, що після успішного commit транзакції зміни ",[5136,5853,5854],{},"назавжди"," зберігаються у БД, навіть у разі збою системи (відключення живлення, crash сервера).",[5190,5857,5858],{},[5136,5859,5860],{},"Механізми забезпечення:",[5092,5862,5863,5869],{},[5095,5864,5865,5868],{},[5136,5866,5867],{},"Write-Ahead Logging (WAL):"," Перед зміною даних на диску БД записує лог операцій. При відновленні після збою БД відтворює зміни з логу.",[5095,5870,5871,5874],{},[5136,5872,5873],{},"Fsync:"," Синхронізація буферів ОС з фізичним диском для гарантії збереження даних.",[5876,5877,5878,5881,5884,5885,5888,5889,5888,5892,5895],"note",{},[5136,5879,5880],{},"Практичне значення ACID:",[5882,5883],"br",{},"\nACID властивості критичні для ",[5136,5886,5887],{},"фінансових систем",", ",[5136,5890,5891],{},"e-commerce",[5136,5893,5894],{},"медичних баз даних"," та будь-яких систем, де втрата або корупція даних неприпустима. Без ACID гарантій неможливо побудувати надійну багатокористувацьку систему.",[5185,5897,5899],{"id":5898},"навіщо-потрібні-транзакції","Навіщо потрібні транзакції",[5190,5901,5902],{},[5136,5903,5904],{},"1. Забезпечення цілісності даних:",[5190,5906,5907],{},"Коли операція складається з кількох кроків, транзакція гарантує, що або всі кроки виконаються, або жодний. Це запобігає корупції даних.",[5190,5909,5910],{},[5136,5911,5912],{},"2. Ізоляція конкурентних операцій:",[5190,5914,5915],{},"У багатокористувацьких системах десятки або сотні запитів виконуються одночасно. Транзакції забезпечують, що конкурентні операції не заважають одна одній.",[5190,5917,5918],{},[5136,5919,5920],{},"3. Rollback при помилках:",[5190,5922,5923],{},"Якщо під час виконання складної операції станеться помилка, транзакція автоматично відкочує всі зміни, залишаючи БД у узгодженому стані.",[5190,5925,5926],{},[5136,5927,5928],{},"4. Аудит та логування:",[5190,5930,5931],{},"Транзакції дозволяють логувати операції як атомарні одиниці, що спрощує аудит та діагностику проблем.",[5177,5933],{},[5180,5935,5937],{"id":5936},"коли-використовувати-транзакції","Коли використовувати транзакції",[5185,5939,5941],{"id":5940},"множинні-повязані-операції","Множинні пов'язані операції",[5190,5943,5944,5945,5948],{},"Завжди використовуйте транзакції, коли операція складається з ",[5136,5946,5947],{},"кількох SQL-запитів",", успіх яких залежить один від одного.",[5190,5950,5951],{},[5136,5952,5953],{},"Приклад — створення замовлення:",[5204,5955,5957],{"className":5456,"code":5956,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F 1. Створити замовлення\n  const order = await manager.save(Order, {\n    userId: 1,\n    totalAmount: 250.00,\n    status: 'pending',\n  });\n\n  \u002F\u002F 2. Додати позиції замовлення\n  await manager.save(OrderItem, [\n    { orderId: order.id, productId: 10, quantity: 2, price: 100.00 },\n    { orderId: order.id, productId: 15, quantity: 1, price: 50.00 },\n  ]);\n\n  \u002F\u002F 3. Оновити кількість товарів на складі\n  await manager.decrement(Product, { id: 10 }, 'stock', 2);\n  await manager.decrement(Product, { id: 15 }, 'stock', 1);\n\n  \u002F\u002F Якщо будь-який крок завершиться помилкою — rollback всіх операцій\n});\n",[5110,5958,5959,5983,5988,6015,6026,6036,6046,6051,6055,6060,6078,6120,6154,6159,6163,6169,6205,6237,6242,6248],{"__ignoreMap":5208},[5212,5960,5961,5963,5965,5967,5969,5971,5973,5975,5977,5979,5981],{"class":5214,"line":5215},[5212,5962,5466],{"class":5465},[5212,5964,5470],{"class":5469},[5212,5966,5314],{"class":5356},[5212,5968,5476],{"class":5475},[5212,5970,5479],{"class":5356},[5212,5972,5482],{"class":5349},[5212,5974,5485],{"class":5356},[5212,5976,5488],{"class":5469},[5212,5978,5491],{"class":5356},[5212,5980,5494],{"class":5349},[5212,5982,5497],{"class":5356},[5212,5984,5985],{"class":5214,"line":5221},[5212,5986,5987],{"class":5547},"  \u002F\u002F 1. Створити замовлення\n",[5212,5989,5990,5993,5996,5998,6000,6002,6004,6007,6009,6012],{"class":5214,"line":5227},[5212,5991,5992],{"class":5349},"  const",[5212,5994,5995],{"class":5744}," order",[5212,5997,5762],{"class":5356},[5212,5999,5466],{"class":5465},[5212,6001,5505],{"class":5469},[5212,6003,5314],{"class":5356},[5212,6005,6006],{"class":5475},"save",[5212,6008,5479],{"class":5356},[5212,6010,6011],{"class":5469},"Order",[5212,6013,6014],{"class":5356},", {\n",[5212,6016,6017,6020,6023],{"class":5214,"line":5233},[5212,6018,6019],{"class":5469},"    userId:",[5212,6021,6022],{"class":5374}," 1",[5212,6024,6025],{"class":5356},",\n",[5212,6027,6028,6031,6034],{"class":5214,"line":5239},[5212,6029,6030],{"class":5469},"    totalAmount:",[5212,6032,6033],{"class":5374}," 250.00",[5212,6035,6025],{"class":5356},[5212,6037,6038,6041,6044],{"class":5214,"line":5245},[5212,6039,6040],{"class":5469},"    status:",[5212,6042,6043],{"class":5384}," 'pending'",[5212,6045,6025],{"class":5356},[5212,6047,6048],{"class":5214,"line":5251},[5212,6049,6050],{"class":5356},"  });\n",[5212,6052,6053],{"class":5214,"line":5257},[5212,6054,5662],{"emptyLinePlaceholder":5661},[5212,6056,6057],{"class":5214,"line":5263},[5212,6058,6059],{"class":5547},"  \u002F\u002F 2. Додати позиції замовлення\n",[5212,6061,6062,6064,6066,6068,6070,6072,6075],{"class":5214,"line":5269},[5212,6063,5502],{"class":5465},[5212,6065,5505],{"class":5469},[5212,6067,5314],{"class":5356},[5212,6069,6006],{"class":5475},[5212,6071,5479],{"class":5356},[5212,6073,6074],{"class":5469},"OrderItem",[5212,6076,6077],{"class":5356},", [\n",[5212,6079,6080,6083,6086,6088,6090,6093,6095,6098,6101,6103,6106,6109,6111,6114,6117],{"class":5214,"line":5275},[5212,6081,6082],{"class":5356},"    { ",[5212,6084,6085],{"class":5469},"orderId:",[5212,6087,5995],{"class":5469},[5212,6089,5314],{"class":5356},[5212,6091,6092],{"class":5469},"id",[5212,6094,5888],{"class":5356},[5212,6096,6097],{"class":5469},"productId:",[5212,6099,6100],{"class":5374}," 10",[5212,6102,5888],{"class":5356},[5212,6104,6105],{"class":5469},"quantity:",[5212,6107,6108],{"class":5374}," 2",[5212,6110,5888],{"class":5356},[5212,6112,6113],{"class":5469},"price:",[5212,6115,6116],{"class":5374}," 100.00",[5212,6118,6119],{"class":5356}," },\n",[5212,6121,6122,6124,6126,6128,6130,6132,6134,6136,6139,6141,6143,6145,6147,6149,6152],{"class":5214,"line":5281},[5212,6123,6082],{"class":5356},[5212,6125,6085],{"class":5469},[5212,6127,5995],{"class":5469},[5212,6129,5314],{"class":5356},[5212,6131,6092],{"class":5469},[5212,6133,5888],{"class":5356},[5212,6135,6097],{"class":5469},[5212,6137,6138],{"class":5374}," 15",[5212,6140,5888],{"class":5356},[5212,6142,6105],{"class":5469},[5212,6144,6022],{"class":5374},[5212,6146,5888],{"class":5356},[5212,6148,6113],{"class":5469},[5212,6150,6151],{"class":5374}," 50.00",[5212,6153,6119],{"class":5356},[5212,6155,6156],{"class":5214,"line":5287},[5212,6157,6158],{"class":5356},"  ]);\n",[5212,6160,6161],{"class":5214,"line":5293},[5212,6162,5662],{"emptyLinePlaceholder":5661},[5212,6164,6166],{"class":5214,"line":6165},15,[5212,6167,6168],{"class":5547},"  \u002F\u002F 3. Оновити кількість товарів на складі\n",[5212,6170,6172,6174,6176,6178,6181,6183,6186,6188,6190,6192,6195,6198,6200,6203],{"class":5214,"line":6171},16,[5212,6173,5502],{"class":5465},[5212,6175,5505],{"class":5469},[5212,6177,5314],{"class":5356},[5212,6179,6180],{"class":5475},"decrement",[5212,6182,5479],{"class":5356},[5212,6184,6185],{"class":5469},"Product",[5212,6187,5518],{"class":5356},[5212,6189,5521],{"class":5469},[5212,6191,6100],{"class":5374},[5212,6193,6194],{"class":5356}," }, ",[5212,6196,6197],{"class":5384},"'stock'",[5212,6199,5888],{"class":5356},[5212,6201,6202],{"class":5374},"2",[5212,6204,5656],{"class":5356},[5212,6206,6208,6210,6212,6214,6216,6218,6220,6222,6224,6226,6228,6230,6232,6235],{"class":5214,"line":6207},17,[5212,6209,5502],{"class":5465},[5212,6211,5505],{"class":5469},[5212,6213,5314],{"class":5356},[5212,6215,6180],{"class":5475},[5212,6217,5479],{"class":5356},[5212,6219,6185],{"class":5469},[5212,6221,5518],{"class":5356},[5212,6223,5521],{"class":5469},[5212,6225,6138],{"class":5374},[5212,6227,6194],{"class":5356},[5212,6229,6197],{"class":5384},[5212,6231,5888],{"class":5356},[5212,6233,6234],{"class":5374},"1",[5212,6236,5656],{"class":5356},[5212,6238,6240],{"class":5214,"line":6239},18,[5212,6241,5662],{"emptyLinePlaceholder":5661},[5212,6243,6245],{"class":5214,"line":6244},19,[5212,6246,6247],{"class":5547},"  \u002F\u002F Якщо будь-який крок завершиться помилкою — rollback всіх операцій\n",[5212,6249,6251],{"class":5214,"line":6250},20,[5212,6252,5597],{"class":5356},[5190,6254,6255],{},[5136,6256,5325],{},[5190,6258,6259,6260,6263],{},"Якщо крок 3 завершиться помилкою (наприклад, недостатньо товару на складі), замовлення та позиції ",[5136,6261,6262],{},"залишаться у БД",", але склад не оновиться → некоректний стан.",[5185,6265,6267],{"id":6266},"фінансові-операції","Фінансові операції",[5190,6269,6270,6271,6274],{},"Будь-які операції з грошима ",[5136,6272,6273],{},"обов'язково"," мають виконуватися у транзакціях для забезпечення узгодженості.",[5190,6276,6277],{},[5136,6278,6279],{},"Приклад — поповнення балансу через платіжну систему:",[5204,6281,6283],{"className":5456,"code":6282,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F 1. Створити запис про платіж\n  const payment = await manager.save(Payment, {\n    userId: 1,\n    amount: 100.00,\n    status: 'completed',\n    paymentMethod: 'card',\n  });\n\n  \u002F\u002F 2. Оновити баланс користувача\n  await manager.increment(User, { id: 1 }, 'balance', 100.00);\n\n  \u002F\u002F 3. Додати запис до історії транзакцій\n  await manager.save(Transaction, {\n    userId: 1,\n    type: 'deposit',\n    amount: 100.00,\n    paymentId: payment.id,\n  });\n});\n",[5110,6284,6285,6309,6314,6338,6346,6355,6364,6374,6378,6382,6387,6421,6425,6430,6447,6455,6465,6473,6486,6490],{"__ignoreMap":5208},[5212,6286,6287,6289,6291,6293,6295,6297,6299,6301,6303,6305,6307],{"class":5214,"line":5215},[5212,6288,5466],{"class":5465},[5212,6290,5470],{"class":5469},[5212,6292,5314],{"class":5356},[5212,6294,5476],{"class":5475},[5212,6296,5479],{"class":5356},[5212,6298,5482],{"class":5349},[5212,6300,5485],{"class":5356},[5212,6302,5488],{"class":5469},[5212,6304,5491],{"class":5356},[5212,6306,5494],{"class":5349},[5212,6308,5497],{"class":5356},[5212,6310,6311],{"class":5214,"line":5221},[5212,6312,6313],{"class":5547},"  \u002F\u002F 1. Створити запис про платіж\n",[5212,6315,6316,6318,6321,6323,6325,6327,6329,6331,6333,6336],{"class":5214,"line":5227},[5212,6317,5992],{"class":5349},[5212,6319,6320],{"class":5744}," payment",[5212,6322,5762],{"class":5356},[5212,6324,5466],{"class":5465},[5212,6326,5505],{"class":5469},[5212,6328,5314],{"class":5356},[5212,6330,6006],{"class":5475},[5212,6332,5479],{"class":5356},[5212,6334,6335],{"class":5469},"Payment",[5212,6337,6014],{"class":5356},[5212,6339,6340,6342,6344],{"class":5214,"line":5233},[5212,6341,6019],{"class":5469},[5212,6343,6022],{"class":5374},[5212,6345,6025],{"class":5356},[5212,6347,6348,6351,6353],{"class":5214,"line":5239},[5212,6349,6350],{"class":5469},"    amount:",[5212,6352,6116],{"class":5374},[5212,6354,6025],{"class":5356},[5212,6356,6357,6359,6362],{"class":5214,"line":5245},[5212,6358,6040],{"class":5469},[5212,6360,6361],{"class":5384}," 'completed'",[5212,6363,6025],{"class":5356},[5212,6365,6366,6369,6372],{"class":5214,"line":5251},[5212,6367,6368],{"class":5469},"    paymentMethod:",[5212,6370,6371],{"class":5384}," 'card'",[5212,6373,6025],{"class":5356},[5212,6375,6376],{"class":5214,"line":5257},[5212,6377,6050],{"class":5356},[5212,6379,6380],{"class":5214,"line":5263},[5212,6381,5662],{"emptyLinePlaceholder":5661},[5212,6383,6384],{"class":5214,"line":5269},[5212,6385,6386],{"class":5547},"  \u002F\u002F 2. Оновити баланс користувача\n",[5212,6388,6389,6391,6393,6395,6398,6400,6403,6405,6407,6409,6411,6414,6416,6419],{"class":5214,"line":5275},[5212,6390,5502],{"class":5465},[5212,6392,5505],{"class":5469},[5212,6394,5314],{"class":5356},[5212,6396,6397],{"class":5475},"increment",[5212,6399,5479],{"class":5356},[5212,6401,6402],{"class":5469},"User",[5212,6404,5518],{"class":5356},[5212,6406,5521],{"class":5469},[5212,6408,6022],{"class":5374},[5212,6410,6194],{"class":5356},[5212,6412,6413],{"class":5384},"'balance'",[5212,6415,5888],{"class":5356},[5212,6417,6418],{"class":5374},"100.00",[5212,6420,5656],{"class":5356},[5212,6422,6423],{"class":5214,"line":5281},[5212,6424,5662],{"emptyLinePlaceholder":5661},[5212,6426,6427],{"class":5214,"line":5287},[5212,6428,6429],{"class":5547},"  \u002F\u002F 3. Додати запис до історії транзакцій\n",[5212,6431,6432,6434,6436,6438,6440,6442,6445],{"class":5214,"line":5293},[5212,6433,5502],{"class":5465},[5212,6435,5505],{"class":5469},[5212,6437,5314],{"class":5356},[5212,6439,6006],{"class":5475},[5212,6441,5479],{"class":5356},[5212,6443,6444],{"class":5469},"Transaction",[5212,6446,6014],{"class":5356},[5212,6448,6449,6451,6453],{"class":5214,"line":6165},[5212,6450,6019],{"class":5469},[5212,6452,6022],{"class":5374},[5212,6454,6025],{"class":5356},[5212,6456,6457,6460,6463],{"class":5214,"line":6171},[5212,6458,6459],{"class":5469},"    type:",[5212,6461,6462],{"class":5384}," 'deposit'",[5212,6464,6025],{"class":5356},[5212,6466,6467,6469,6471],{"class":5214,"line":6207},[5212,6468,6350],{"class":5469},[5212,6470,6116],{"class":5374},[5212,6472,6025],{"class":5356},[5212,6474,6475,6478,6480,6482,6484],{"class":5214,"line":6239},[5212,6476,6477],{"class":5469},"    paymentId:",[5212,6479,6320],{"class":5469},[5212,6481,5314],{"class":5356},[5212,6483,6092],{"class":5469},[5212,6485,6025],{"class":5356},[5212,6487,6488],{"class":5214,"line":6244},[5212,6489,6050],{"class":5356},[5212,6491,6492],{"class":5214,"line":6250},[5212,6493,5597],{"class":5356},[5185,6495,6497],{"id":6496},"створення-комплексних-обєктів-з-залежностями","Створення комплексних об'єктів з залежностями",[5190,6499,6500],{},"При створенні об'єктів з багатьма зв'язками транзакція гарантує, що або весь граф об'єктів створюється, або жодна частина.",[5190,6502,6503],{},[5136,6504,6505],{},"Приклад — реєстрація користувача з профілем та налаштуваннями:",[5204,6507,6509],{"className":5456,"code":6508,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F 1. Створити користувача\n  const user = await manager.save(User, {\n    email: 'user@example.com',\n    passwordHash: await bcrypt.hash('password', 10),\n  });\n\n  \u002F\u002F 2. Створити профіль\n  await manager.save(Profile, {\n    userId: user.id,\n    firstName: 'John',\n    lastName: 'Doe',\n  });\n\n  \u002F\u002F 3. Створити налаштування за замовчуванням\n  await manager.save(UserSettings, {\n    userId: user.id,\n    theme: 'light',\n    language: 'uk',\n    notifications: true,\n  });\n\n  \u002F\u002F 4. Призначити роль за замовчуванням\n  await manager.save(UserRole, {\n    userId: user.id,\n    roleId: 3, \u002F\u002F 'user' role\n  });\n});\n",[5110,6510,6511,6535,6540,6563,6573,6602,6606,6610,6615,6632,6644,6654,6664,6668,6672,6677,6694,6706,6716,6726,6736,6741,6746,6752,6770,6783,6797,6802],{"__ignoreMap":5208},[5212,6512,6513,6515,6517,6519,6521,6523,6525,6527,6529,6531,6533],{"class":5214,"line":5215},[5212,6514,5466],{"class":5465},[5212,6516,5470],{"class":5469},[5212,6518,5314],{"class":5356},[5212,6520,5476],{"class":5475},[5212,6522,5479],{"class":5356},[5212,6524,5482],{"class":5349},[5212,6526,5485],{"class":5356},[5212,6528,5488],{"class":5469},[5212,6530,5491],{"class":5356},[5212,6532,5494],{"class":5349},[5212,6534,5497],{"class":5356},[5212,6536,6537],{"class":5214,"line":5221},[5212,6538,6539],{"class":5547},"  \u002F\u002F 1. Створити користувача\n",[5212,6541,6542,6544,6547,6549,6551,6553,6555,6557,6559,6561],{"class":5214,"line":5227},[5212,6543,5992],{"class":5349},[5212,6545,6546],{"class":5744}," user",[5212,6548,5762],{"class":5356},[5212,6550,5466],{"class":5465},[5212,6552,5505],{"class":5469},[5212,6554,5314],{"class":5356},[5212,6556,6006],{"class":5475},[5212,6558,5479],{"class":5356},[5212,6560,6402],{"class":5469},[5212,6562,6014],{"class":5356},[5212,6564,6565,6568,6571],{"class":5214,"line":5233},[5212,6566,6567],{"class":5469},"    email:",[5212,6569,6570],{"class":5384}," 'user@example.com'",[5212,6572,6025],{"class":5356},[5212,6574,6575,6578,6581,6584,6586,6589,6591,6594,6596,6599],{"class":5214,"line":5239},[5212,6576,6577],{"class":5469},"    passwordHash:",[5212,6579,6580],{"class":5465}," await",[5212,6582,6583],{"class":5469}," bcrypt",[5212,6585,5314],{"class":5356},[5212,6587,6588],{"class":5475},"hash",[5212,6590,5479],{"class":5356},[5212,6592,6593],{"class":5384},"'password'",[5212,6595,5888],{"class":5356},[5212,6597,6598],{"class":5374},"10",[5212,6600,6601],{"class":5356},"),\n",[5212,6603,6604],{"class":5214,"line":5245},[5212,6605,6050],{"class":5356},[5212,6607,6608],{"class":5214,"line":5251},[5212,6609,5662],{"emptyLinePlaceholder":5661},[5212,6611,6612],{"class":5214,"line":5257},[5212,6613,6614],{"class":5547},"  \u002F\u002F 2. Створити профіль\n",[5212,6616,6617,6619,6621,6623,6625,6627,6630],{"class":5214,"line":5263},[5212,6618,5502],{"class":5465},[5212,6620,5505],{"class":5469},[5212,6622,5314],{"class":5356},[5212,6624,6006],{"class":5475},[5212,6626,5479],{"class":5356},[5212,6628,6629],{"class":5469},"Profile",[5212,6631,6014],{"class":5356},[5212,6633,6634,6636,6638,6640,6642],{"class":5214,"line":5269},[5212,6635,6019],{"class":5469},[5212,6637,6546],{"class":5469},[5212,6639,5314],{"class":5356},[5212,6641,6092],{"class":5469},[5212,6643,6025],{"class":5356},[5212,6645,6646,6649,6652],{"class":5214,"line":5275},[5212,6647,6648],{"class":5469},"    firstName:",[5212,6650,6651],{"class":5384}," 'John'",[5212,6653,6025],{"class":5356},[5212,6655,6656,6659,6662],{"class":5214,"line":5281},[5212,6657,6658],{"class":5469},"    lastName:",[5212,6660,6661],{"class":5384}," 'Doe'",[5212,6663,6025],{"class":5356},[5212,6665,6666],{"class":5214,"line":5287},[5212,6667,6050],{"class":5356},[5212,6669,6670],{"class":5214,"line":5293},[5212,6671,5662],{"emptyLinePlaceholder":5661},[5212,6673,6674],{"class":5214,"line":6165},[5212,6675,6676],{"class":5547},"  \u002F\u002F 3. Створити налаштування за замовчуванням\n",[5212,6678,6679,6681,6683,6685,6687,6689,6692],{"class":5214,"line":6171},[5212,6680,5502],{"class":5465},[5212,6682,5505],{"class":5469},[5212,6684,5314],{"class":5356},[5212,6686,6006],{"class":5475},[5212,6688,5479],{"class":5356},[5212,6690,6691],{"class":5469},"UserSettings",[5212,6693,6014],{"class":5356},[5212,6695,6696,6698,6700,6702,6704],{"class":5214,"line":6207},[5212,6697,6019],{"class":5469},[5212,6699,6546],{"class":5469},[5212,6701,5314],{"class":5356},[5212,6703,6092],{"class":5469},[5212,6705,6025],{"class":5356},[5212,6707,6708,6711,6714],{"class":5214,"line":6239},[5212,6709,6710],{"class":5469},"    theme:",[5212,6712,6713],{"class":5384}," 'light'",[5212,6715,6025],{"class":5356},[5212,6717,6718,6721,6724],{"class":5214,"line":6244},[5212,6719,6720],{"class":5469},"    language:",[5212,6722,6723],{"class":5384}," 'uk'",[5212,6725,6025],{"class":5356},[5212,6727,6728,6731,6734],{"class":5214,"line":6250},[5212,6729,6730],{"class":5469},"    notifications:",[5212,6732,6733],{"class":5349}," true",[5212,6735,6025],{"class":5356},[5212,6737,6739],{"class":5214,"line":6738},21,[5212,6740,6050],{"class":5356},[5212,6742,6744],{"class":5214,"line":6743},22,[5212,6745,5662],{"emptyLinePlaceholder":5661},[5212,6747,6749],{"class":5214,"line":6748},23,[5212,6750,6751],{"class":5547},"  \u002F\u002F 4. Призначити роль за замовчуванням\n",[5212,6753,6755,6757,6759,6761,6763,6765,6768],{"class":5214,"line":6754},24,[5212,6756,5502],{"class":5465},[5212,6758,5505],{"class":5469},[5212,6760,5314],{"class":5356},[5212,6762,6006],{"class":5475},[5212,6764,5479],{"class":5356},[5212,6766,6767],{"class":5469},"UserRole",[5212,6769,6014],{"class":5356},[5212,6771,6773,6775,6777,6779,6781],{"class":5214,"line":6772},25,[5212,6774,6019],{"class":5469},[5212,6776,6546],{"class":5469},[5212,6778,5314],{"class":5356},[5212,6780,6092],{"class":5469},[5212,6782,6025],{"class":5356},[5212,6784,6786,6789,6792,6794],{"class":5214,"line":6785},26,[5212,6787,6788],{"class":5469},"    roleId:",[5212,6790,6791],{"class":5374}," 3",[5212,6793,5888],{"class":5356},[5212,6795,6796],{"class":5547},"\u002F\u002F 'user' role\n",[5212,6798,6800],{"class":5214,"line":6799},27,[5212,6801,6050],{"class":5356},[5212,6803,6805],{"class":5214,"line":6804},28,[5212,6806,5597],{"class":5356},[5185,6808,6810],{"id":6809},"забезпечення-цілісності-даних","Забезпечення цілісності даних",[5190,6812,6813,6814,6817,6818,6821],{},"Транзакції критичні для операцій, що ",[5136,6815,6816],{},"залежать від попереднього стану"," даних та можуть призвести до ",[5136,6819,6820],{},"race conditions"," без ізоляції.",[5190,6823,6824],{},[5136,6825,6826],{},"Приклад — система бронювання місць:",[5204,6828,6830],{"className":5456,"code":6829,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F 1. Перевірити доступність місця\n  const seat = await manager.findOne(Seat, {\n    where: { id: seatId, status: 'available' },\n    lock: { mode: 'pessimistic_write' }, \u002F\u002F Блокування для запису\n  });\n\n  if (!seat) {\n    throw new Error('Seat is not available');\n  }\n\n  \u002F\u002F 2. Забронювати місце\n  await manager.update(Seat, { id: seatId }, { status: 'reserved', userId: userId });\n\n  \u002F\u002F 3. Створити запис про бронювання\n  await manager.save(Booking, {\n    userId: userId,\n    seatId: seatId,\n    expiresAt: new Date(Date.now() + 15 * 60 * 1000), \u002F\u002F 15 хвилин\n  });\n});\n",[5110,6831,6832,6856,6861,6886,6909,6927,6931,6935,6949,6967,6972,6976,6981,7019,7023,7028,7045,7053,7062,7105,7109],{"__ignoreMap":5208},[5212,6833,6834,6836,6838,6840,6842,6844,6846,6848,6850,6852,6854],{"class":5214,"line":5215},[5212,6835,5466],{"class":5465},[5212,6837,5470],{"class":5469},[5212,6839,5314],{"class":5356},[5212,6841,5476],{"class":5475},[5212,6843,5479],{"class":5356},[5212,6845,5482],{"class":5349},[5212,6847,5485],{"class":5356},[5212,6849,5488],{"class":5469},[5212,6851,5491],{"class":5356},[5212,6853,5494],{"class":5349},[5212,6855,5497],{"class":5356},[5212,6857,6858],{"class":5214,"line":5221},[5212,6859,6860],{"class":5547},"  \u002F\u002F 1. Перевірити доступність місця\n",[5212,6862,6863,6865,6868,6870,6872,6874,6876,6879,6881,6884],{"class":5214,"line":5227},[5212,6864,5992],{"class":5349},[5212,6866,6867],{"class":5744}," seat",[5212,6869,5762],{"class":5356},[5212,6871,5466],{"class":5465},[5212,6873,5505],{"class":5469},[5212,6875,5314],{"class":5356},[5212,6877,6878],{"class":5475},"findOne",[5212,6880,5479],{"class":5356},[5212,6882,6883],{"class":5469},"Seat",[5212,6885,6014],{"class":5356},[5212,6887,6888,6891,6894,6896,6899,6901,6904,6907],{"class":5214,"line":5233},[5212,6889,6890],{"class":5469},"    where:",[5212,6892,6893],{"class":5356}," { ",[5212,6895,5521],{"class":5469},[5212,6897,6898],{"class":5469}," seatId",[5212,6900,5888],{"class":5356},[5212,6902,6903],{"class":5469},"status:",[5212,6905,6906],{"class":5384}," 'available'",[5212,6908,6119],{"class":5356},[5212,6910,6911,6914,6916,6919,6922,6924],{"class":5214,"line":5239},[5212,6912,6913],{"class":5469},"    lock:",[5212,6915,6893],{"class":5356},[5212,6917,6918],{"class":5469},"mode:",[5212,6920,6921],{"class":5384}," 'pessimistic_write'",[5212,6923,6194],{"class":5356},[5212,6925,6926],{"class":5547},"\u002F\u002F Блокування для запису\n",[5212,6928,6929],{"class":5214,"line":5245},[5212,6930,6050],{"class":5356},[5212,6932,6933],{"class":5214,"line":5251},[5212,6934,5662],{"emptyLinePlaceholder":5661},[5212,6936,6937,6940,6943,6946],{"class":5214,"line":5257},[5212,6938,6939],{"class":5465},"  if",[5212,6941,6942],{"class":5356}," (!",[5212,6944,6945],{"class":5469},"seat",[5212,6947,6948],{"class":5356},") {\n",[5212,6950,6951,6954,6957,6960,6962,6965],{"class":5214,"line":5263},[5212,6952,6953],{"class":5465},"    throw",[5212,6955,6956],{"class":5349}," new",[5212,6958,6959],{"class":5475}," Error",[5212,6961,5479],{"class":5356},[5212,6963,6964],{"class":5384},"'Seat is not available'",[5212,6966,5656],{"class":5356},[5212,6968,6969],{"class":5214,"line":5269},[5212,6970,6971],{"class":5356},"  }\n",[5212,6973,6974],{"class":5214,"line":5275},[5212,6975,5662],{"emptyLinePlaceholder":5661},[5212,6977,6978],{"class":5214,"line":5281},[5212,6979,6980],{"class":5547},"  \u002F\u002F 2. Забронювати місце\n",[5212,6982,6983,6985,6987,6989,6991,6993,6995,6997,6999,7001,7003,7005,7008,7010,7013,7016],{"class":5214,"line":5287},[5212,6984,5502],{"class":5465},[5212,6986,5505],{"class":5469},[5212,6988,5314],{"class":5356},[5212,6990,5510],{"class":5475},[5212,6992,5479],{"class":5356},[5212,6994,6883],{"class":5469},[5212,6996,5518],{"class":5356},[5212,6998,5521],{"class":5469},[5212,7000,6898],{"class":5469},[5212,7002,5527],{"class":5356},[5212,7004,6903],{"class":5469},[5212,7006,7007],{"class":5384}," 'reserved'",[5212,7009,5888],{"class":5356},[5212,7011,7012],{"class":5469},"userId:",[5212,7014,7015],{"class":5469}," userId",[5212,7017,7018],{"class":5356}," });\n",[5212,7020,7021],{"class":5214,"line":5293},[5212,7022,5662],{"emptyLinePlaceholder":5661},[5212,7024,7025],{"class":5214,"line":6165},[5212,7026,7027],{"class":5547},"  \u002F\u002F 3. Створити запис про бронювання\n",[5212,7029,7030,7032,7034,7036,7038,7040,7043],{"class":5214,"line":6171},[5212,7031,5502],{"class":5465},[5212,7033,5505],{"class":5469},[5212,7035,5314],{"class":5356},[5212,7037,6006],{"class":5475},[5212,7039,5479],{"class":5356},[5212,7041,7042],{"class":5469},"Booking",[5212,7044,6014],{"class":5356},[5212,7046,7047,7049,7051],{"class":5214,"line":6207},[5212,7048,6019],{"class":5469},[5212,7050,7015],{"class":5469},[5212,7052,6025],{"class":5356},[5212,7054,7055,7058,7060],{"class":5214,"line":6239},[5212,7056,7057],{"class":5469},"    seatId:",[5212,7059,6898],{"class":5469},[5212,7061,6025],{"class":5356},[5212,7063,7064,7067,7069,7072,7074,7077,7079,7082,7085,7088,7091,7094,7096,7099,7102],{"class":5214,"line":6244},[5212,7065,7066],{"class":5469},"    expiresAt:",[5212,7068,6956],{"class":5349},[5212,7070,7071],{"class":5475}," Date",[5212,7073,5479],{"class":5356},[5212,7075,7076],{"class":5469},"Date",[5212,7078,5314],{"class":5356},[5212,7080,7081],{"class":5475},"now",[5212,7083,7084],{"class":5356},"() + ",[5212,7086,7087],{"class":5374},"15",[5212,7089,7090],{"class":5356}," * ",[5212,7092,7093],{"class":5374},"60",[5212,7095,7090],{"class":5356},[5212,7097,7098],{"class":5374},"1000",[5212,7100,7101],{"class":5356},"), ",[5212,7103,7104],{"class":5547},"\u002F\u002F 15 хвилин\n",[5212,7106,7107],{"class":5214,"line":6250},[5212,7108,6050],{"class":5356},[5212,7110,7111],{"class":5214,"line":6738},[5212,7112,5597],{"class":5356},[5190,7114,7115],{},[5136,7116,7117],{},"Без транзакції з блокуванням:",[5190,7119,7120],{},"Два користувачі можуть одночасно прочитати, що місце доступне, і обидва спробують його забронювати → race condition.",[5185,7122,7124],{"id":7123},"rollback-при-помилці","Rollback при помилці",[5190,7126,7127],{},"Транзакції автоматично відкочують зміни при виникненні помилки, запобігаючи частковому застосуванню операцій.",[5190,7129,7130],{},[5136,7131,7132],{},"Приклад — масове оновлення з валідацією:",[5204,7134,7136],{"className":5456,"code":7135,"language":5458,"meta":5208,"style":5208},"try {\n  await dataSource.transaction(async (manager) => {\n    const users = await manager.find(User, { where: { isActive: true } });\n\n    for (const user of users) {\n      \u002F\u002F Валідація email\n      if (!isValidEmail(user.email)) {\n        throw new Error(`Invalid email for user ${user.id}`);\n      }\n\n      \u002F\u002F Оновлення\n      await manager.update(User, { id: user.id }, { emailVerified: true });\n    }\n  });\n} catch (error) {\n  console.error('Rollback: Email verification failed', error.message);\n  \u002F\u002F Всі оновлення відкочені — жоден user не отримав emailVerified: true\n}\n",[5110,7137,7138,7145,7169,7207,7211,7230,7235,7258,7290,7295,7299,7304,7338,7343,7347,7362,7387,7392],{"__ignoreMap":5208},[5212,7139,7140,7143],{"class":5214,"line":5215},[5212,7141,7142],{"class":5465},"try",[5212,7144,5497],{"class":5356},[5212,7146,7147,7149,7151,7153,7155,7157,7159,7161,7163,7165,7167],{"class":5214,"line":5221},[5212,7148,5502],{"class":5465},[5212,7150,5470],{"class":5469},[5212,7152,5314],{"class":5356},[5212,7154,5476],{"class":5475},[5212,7156,5479],{"class":5356},[5212,7158,5482],{"class":5349},[5212,7160,5485],{"class":5356},[5212,7162,5488],{"class":5469},[5212,7164,5491],{"class":5356},[5212,7166,5494],{"class":5349},[5212,7168,5497],{"class":5356},[5212,7170,7171,7174,7177,7179,7181,7183,7185,7188,7190,7192,7194,7197,7199,7202,7204],{"class":5214,"line":5227},[5212,7172,7173],{"class":5349},"    const",[5212,7175,7176],{"class":5744}," users",[5212,7178,5762],{"class":5356},[5212,7180,5466],{"class":5465},[5212,7182,5505],{"class":5469},[5212,7184,5314],{"class":5356},[5212,7186,7187],{"class":5475},"find",[5212,7189,5479],{"class":5356},[5212,7191,6402],{"class":5469},[5212,7193,5518],{"class":5356},[5212,7195,7196],{"class":5469},"where:",[5212,7198,6893],{"class":5356},[5212,7200,7201],{"class":5469},"isActive:",[5212,7203,6733],{"class":5349},[5212,7205,7206],{"class":5356}," } });\n",[5212,7208,7209],{"class":5214,"line":5233},[5212,7210,5662],{"emptyLinePlaceholder":5661},[5212,7212,7213,7216,7218,7221,7223,7226,7228],{"class":5214,"line":5239},[5212,7214,7215],{"class":5465},"    for",[5212,7217,5485],{"class":5356},[5212,7219,7220],{"class":5349},"const",[5212,7222,6546],{"class":5744},[5212,7224,7225],{"class":5349}," of",[5212,7227,7176],{"class":5469},[5212,7229,6948],{"class":5356},[5212,7231,7232],{"class":5214,"line":5245},[5212,7233,7234],{"class":5547},"      \u002F\u002F Валідація email\n",[5212,7236,7237,7240,7242,7245,7247,7250,7252,7255],{"class":5214,"line":5251},[5212,7238,7239],{"class":5465},"      if",[5212,7241,6942],{"class":5356},[5212,7243,7244],{"class":5475},"isValidEmail",[5212,7246,5479],{"class":5356},[5212,7248,7249],{"class":5469},"user",[5212,7251,5314],{"class":5356},[5212,7253,7254],{"class":5469},"email",[5212,7256,7257],{"class":5356},")) {\n",[5212,7259,7260,7263,7265,7267,7269,7272,7275,7277,7280,7282,7285,7288],{"class":5214,"line":5257},[5212,7261,7262],{"class":5465},"        throw",[5212,7264,6956],{"class":5349},[5212,7266,6959],{"class":5475},[5212,7268,5479],{"class":5356},[5212,7270,7271],{"class":5384},"`Invalid email for user ",[5212,7273,7274],{"class":5349},"${",[5212,7276,7249],{"class":5469},[5212,7278,5314],{"class":7279},"sD7JJ",[5212,7281,6092],{"class":5469},[5212,7283,7284],{"class":5349},"}",[5212,7286,7287],{"class":5384},"`",[5212,7289,5656],{"class":5356},[5212,7291,7292],{"class":5214,"line":5263},[5212,7293,7294],{"class":5356},"      }\n",[5212,7296,7297],{"class":5214,"line":5269},[5212,7298,5662],{"emptyLinePlaceholder":5661},[5212,7300,7301],{"class":5214,"line":5275},[5212,7302,7303],{"class":5547},"      \u002F\u002F Оновлення\n",[5212,7305,7306,7309,7311,7313,7315,7317,7319,7321,7323,7325,7327,7329,7331,7334,7336],{"class":5214,"line":5281},[5212,7307,7308],{"class":5465},"      await",[5212,7310,5505],{"class":5469},[5212,7312,5314],{"class":5356},[5212,7314,5510],{"class":5475},[5212,7316,5479],{"class":5356},[5212,7318,6402],{"class":5469},[5212,7320,5518],{"class":5356},[5212,7322,5521],{"class":5469},[5212,7324,6546],{"class":5469},[5212,7326,5314],{"class":5356},[5212,7328,6092],{"class":5469},[5212,7330,5527],{"class":5356},[5212,7332,7333],{"class":5469},"emailVerified:",[5212,7335,6733],{"class":5349},[5212,7337,7018],{"class":5356},[5212,7339,7340],{"class":5214,"line":5287},[5212,7341,7342],{"class":5356},"    }\n",[5212,7344,7345],{"class":5214,"line":5293},[5212,7346,6050],{"class":5356},[5212,7348,7349,7352,7355,7357,7360],{"class":5214,"line":6165},[5212,7350,7351],{"class":5356},"} ",[5212,7353,7354],{"class":5465},"catch",[5212,7356,5485],{"class":5356},[5212,7358,7359],{"class":5469},"error",[5212,7361,6948],{"class":5356},[5212,7363,7364,7367,7369,7371,7373,7376,7378,7380,7382,7385],{"class":5214,"line":6171},[5212,7365,7366],{"class":5469},"  console",[5212,7368,5314],{"class":5356},[5212,7370,7359],{"class":5475},[5212,7372,5479],{"class":5356},[5212,7374,7375],{"class":5384},"'Rollback: Email verification failed'",[5212,7377,5888],{"class":5356},[5212,7379,7359],{"class":5469},[5212,7381,5314],{"class":5356},[5212,7383,7384],{"class":5469},"message",[5212,7386,5656],{"class":5356},[5212,7388,7389],{"class":5214,"line":6207},[5212,7390,7391],{"class":5547},"  \u002F\u002F Всі оновлення відкочені — жоден user не отримав emailVerified: true\n",[5212,7393,7394],{"class":5214,"line":6239},[5212,7395,7396],{"class":5356},"}\n",[5177,7398],{},[5180,7400,7402],{"id":7401},"простий-спосіб-datasourcetransaction","Простий спосіб: DataSource.transaction()",[5185,7404,7406],{"id":7405},"синтаксис-з-async-callback","Синтаксис з async callback",[5190,7408,7409,7410,7412,7413,7416],{},"TypeORM надає метод ",[5110,7411,5112],{},", який приймає ",[5136,7414,7415],{},"async callback"," та автоматично обробляє commit\u002Frollback.",[5190,7418,7419],{},[5136,7420,7421],{},"Базовий синтаксис:",[5204,7423,7425],{"className":5456,"code":7424,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager: EntityManager) => {\n  \u002F\u002F Всі операції з БД через manager\n  await manager.save(SomeEntity, { \u002F* data *\u002F });\n  await manager.update(AnotherEntity, { id: 1 }, { \u002F* updates *\u002F });\n  \u002F\u002F При успішному завершенні callback — автоматичний COMMIT\n  \u002F\u002F При помилці (throw) — автоматичний ROLLBACK\n});\n",[5110,7426,7427,7458,7463,7485,7513,7518,7523],{"__ignoreMap":5208},[5212,7428,7429,7431,7433,7435,7437,7439,7441,7443,7445,7448,7452,7454,7456],{"class":5214,"line":5215},[5212,7430,5466],{"class":5465},[5212,7432,5470],{"class":5469},[5212,7434,5314],{"class":5356},[5212,7436,5476],{"class":5475},[5212,7438,5479],{"class":5356},[5212,7440,5482],{"class":5349},[5212,7442,5485],{"class":5356},[5212,7444,5488],{"class":5469},[5212,7446,7447],{"class":5356},": ",[5212,7449,7451],{"class":7450},"sN1BT","EntityManager",[5212,7453,5491],{"class":5356},[5212,7455,5494],{"class":5349},[5212,7457,5497],{"class":5356},[5212,7459,7460],{"class":5214,"line":5221},[5212,7461,7462],{"class":5547},"  \u002F\u002F Всі операції з БД через manager\n",[5212,7464,7465,7467,7469,7471,7473,7475,7478,7480,7483],{"class":5214,"line":5227},[5212,7466,5502],{"class":5465},[5212,7468,5505],{"class":5469},[5212,7470,5314],{"class":5356},[5212,7472,6006],{"class":5475},[5212,7474,5479],{"class":5356},[5212,7476,7477],{"class":5469},"SomeEntity",[5212,7479,5518],{"class":5356},[5212,7481,7482],{"class":5547},"\u002F* data *\u002F",[5212,7484,7018],{"class":5356},[5212,7486,7487,7489,7491,7493,7495,7497,7500,7502,7504,7506,7508,7511],{"class":5214,"line":5233},[5212,7488,5502],{"class":5465},[5212,7490,5505],{"class":5469},[5212,7492,5314],{"class":5356},[5212,7494,5510],{"class":5475},[5212,7496,5479],{"class":5356},[5212,7498,7499],{"class":5469},"AnotherEntity",[5212,7501,5518],{"class":5356},[5212,7503,5521],{"class":5469},[5212,7505,6022],{"class":5374},[5212,7507,5527],{"class":5356},[5212,7509,7510],{"class":5547},"\u002F* updates *\u002F",[5212,7512,7018],{"class":5356},[5212,7514,7515],{"class":5214,"line":5239},[5212,7516,7517],{"class":5547},"  \u002F\u002F При успішному завершенні callback — автоматичний COMMIT\n",[5212,7519,7520],{"class":5214,"line":5245},[5212,7521,7522],{"class":5547},"  \u002F\u002F При помилці (throw) — автоматичний ROLLBACK\n",[5212,7524,7525],{"class":5214,"line":5251},[5212,7526,5597],{"class":5356},[5190,7528,7529],{},[5136,7530,7531],{},"Приклад у NestJS сервісі:",[5204,7533,7535],{"className":5456,"code":7534,"language":5458,"meta":5208,"style":5208},"import { Injectable } from '@nestjs\u002Fcommon';\nimport { DataSource } from 'typeorm';\nimport { User } from '.\u002Fentities\u002Fuser.entity';\nimport { Profile } from '.\u002Fentities\u002Fprofile.entity';\n\n@Injectable()\nexport class UsersService {\n  constructor(private readonly dataSource: DataSource) {}\n\n  async createUserWithProfile(dto: CreateUserDto): Promise\u003CUser> {\n    return this.dataSource.transaction(async (manager) => {\n      \u002F\u002F Створити користувача\n      const user = manager.create(User, {\n        email: dto.email,\n        passwordHash: dto.passwordHash,\n      });\n      await manager.save(user);\n\n      \u002F\u002F Створити профіль\n      const profile = manager.create(Profile, {\n        userId: user.id,\n        firstName: dto.firstName,\n        lastName: dto.lastName,\n      });\n      await manager.save(profile);\n\n      return user;\n    });\n  }\n}\n",[5110,7536,7537,7558,7576,7593,7610,7614,7624,7637,7659,7663,7695,7726,7731,7753,7767,7781,7786,7802,7806,7811,7832,7845,7859,7873,7877,7894,7898,7907,7912,7917],{"__ignoreMap":5208},[5212,7538,7539,7542,7544,7547,7550,7553,7556],{"class":5214,"line":5215},[5212,7540,7541],{"class":5465},"import",[5212,7543,6893],{"class":5356},[5212,7545,7546],{"class":5469},"Injectable",[5212,7548,7549],{"class":5356}," } ",[5212,7551,7552],{"class":5465},"from",[5212,7554,7555],{"class":5384}," '@nestjs\u002Fcommon'",[5212,7557,5357],{"class":5356},[5212,7559,7560,7562,7564,7567,7569,7571,7574],{"class":5214,"line":5221},[5212,7561,7541],{"class":5465},[5212,7563,6893],{"class":5356},[5212,7565,7566],{"class":5469},"DataSource",[5212,7568,7549],{"class":5356},[5212,7570,7552],{"class":5465},[5212,7572,7573],{"class":5384}," 'typeorm'",[5212,7575,5357],{"class":5356},[5212,7577,7578,7580,7582,7584,7586,7588,7591],{"class":5214,"line":5227},[5212,7579,7541],{"class":5465},[5212,7581,6893],{"class":5356},[5212,7583,6402],{"class":5469},[5212,7585,7549],{"class":5356},[5212,7587,7552],{"class":5465},[5212,7589,7590],{"class":5384}," '.\u002Fentities\u002Fuser.entity'",[5212,7592,5357],{"class":5356},[5212,7594,7595,7597,7599,7601,7603,7605,7608],{"class":5214,"line":5233},[5212,7596,7541],{"class":5465},[5212,7598,6893],{"class":5356},[5212,7600,6629],{"class":5469},[5212,7602,7549],{"class":5356},[5212,7604,7552],{"class":5465},[5212,7606,7607],{"class":5384}," '.\u002Fentities\u002Fprofile.entity'",[5212,7609,5357],{"class":5356},[5212,7611,7612],{"class":5214,"line":5239},[5212,7613,5662],{"emptyLinePlaceholder":5661},[5212,7615,7616,7619,7621],{"class":5214,"line":5245},[5212,7617,7618],{"class":5356},"@",[5212,7620,7546],{"class":5475},[5212,7622,7623],{"class":5356},"()\n",[5212,7625,7626,7629,7632,7635],{"class":5214,"line":5251},[5212,7627,7628],{"class":5465},"export",[5212,7630,7631],{"class":5349}," class",[5212,7633,7634],{"class":7450}," UsersService",[5212,7636,5497],{"class":5356},[5212,7638,7639,7642,7644,7647,7650,7652,7654,7656],{"class":5214,"line":5257},[5212,7640,7641],{"class":5349},"  constructor",[5212,7643,5479],{"class":5356},[5212,7645,7646],{"class":5349},"private",[5212,7648,7649],{"class":5349}," readonly",[5212,7651,5470],{"class":5469},[5212,7653,7447],{"class":5356},[5212,7655,7566],{"class":7450},[5212,7657,7658],{"class":5356},") {}\n",[5212,7660,7661],{"class":5214,"line":5263},[5212,7662,5662],{"emptyLinePlaceholder":5661},[5212,7664,7665,7668,7671,7673,7676,7678,7681,7684,7687,7690,7692],{"class":5214,"line":5269},[5212,7666,7667],{"class":5349},"  async",[5212,7669,7670],{"class":5475}," createUserWithProfile",[5212,7672,5479],{"class":5356},[5212,7674,7675],{"class":5469},"dto",[5212,7677,7447],{"class":5356},[5212,7679,7680],{"class":7450},"CreateUserDto",[5212,7682,7683],{"class":5356},"): ",[5212,7685,7686],{"class":7450},"Promise",[5212,7688,7689],{"class":5356},"\u003C",[5212,7691,6402],{"class":7450},[5212,7693,7694],{"class":5356},"> {\n",[5212,7696,7697,7700,7703,7705,7708,7710,7712,7714,7716,7718,7720,7722,7724],{"class":5214,"line":5275},[5212,7698,7699],{"class":5465},"    return",[5212,7701,7702],{"class":5349}," this",[5212,7704,5314],{"class":5356},[5212,7706,7707],{"class":5469},"dataSource",[5212,7709,5314],{"class":5356},[5212,7711,5476],{"class":5475},[5212,7713,5479],{"class":5356},[5212,7715,5482],{"class":5349},[5212,7717,5485],{"class":5356},[5212,7719,5488],{"class":5469},[5212,7721,5491],{"class":5356},[5212,7723,5494],{"class":5349},[5212,7725,5497],{"class":5356},[5212,7727,7728],{"class":5214,"line":5281},[5212,7729,7730],{"class":5547},"      \u002F\u002F Створити користувача\n",[5212,7732,7733,7736,7738,7740,7742,7744,7747,7749,7751],{"class":5214,"line":5287},[5212,7734,7735],{"class":5349},"      const",[5212,7737,6546],{"class":5744},[5212,7739,5762],{"class":5356},[5212,7741,5488],{"class":5469},[5212,7743,5314],{"class":5356},[5212,7745,7746],{"class":5475},"create",[5212,7748,5479],{"class":5356},[5212,7750,6402],{"class":5469},[5212,7752,6014],{"class":5356},[5212,7754,7755,7758,7761,7763,7765],{"class":5214,"line":5293},[5212,7756,7757],{"class":5469},"        email:",[5212,7759,7760],{"class":5469}," dto",[5212,7762,5314],{"class":5356},[5212,7764,7254],{"class":5469},[5212,7766,6025],{"class":5356},[5212,7768,7769,7772,7774,7776,7779],{"class":5214,"line":6165},[5212,7770,7771],{"class":5469},"        passwordHash:",[5212,7773,7760],{"class":5469},[5212,7775,5314],{"class":5356},[5212,7777,7778],{"class":5469},"passwordHash",[5212,7780,6025],{"class":5356},[5212,7782,7783],{"class":5214,"line":6171},[5212,7784,7785],{"class":5356},"      });\n",[5212,7787,7788,7790,7792,7794,7796,7798,7800],{"class":5214,"line":6207},[5212,7789,7308],{"class":5465},[5212,7791,5505],{"class":5469},[5212,7793,5314],{"class":5356},[5212,7795,6006],{"class":5475},[5212,7797,5479],{"class":5356},[5212,7799,7249],{"class":5469},[5212,7801,5656],{"class":5356},[5212,7803,7804],{"class":5214,"line":6239},[5212,7805,5662],{"emptyLinePlaceholder":5661},[5212,7807,7808],{"class":5214,"line":6244},[5212,7809,7810],{"class":5547},"      \u002F\u002F Створити профіль\n",[5212,7812,7813,7815,7818,7820,7822,7824,7826,7828,7830],{"class":5214,"line":6250},[5212,7814,7735],{"class":5349},[5212,7816,7817],{"class":5744}," profile",[5212,7819,5762],{"class":5356},[5212,7821,5488],{"class":5469},[5212,7823,5314],{"class":5356},[5212,7825,7746],{"class":5475},[5212,7827,5479],{"class":5356},[5212,7829,6629],{"class":5469},[5212,7831,6014],{"class":5356},[5212,7833,7834,7837,7839,7841,7843],{"class":5214,"line":6738},[5212,7835,7836],{"class":5469},"        userId:",[5212,7838,6546],{"class":5469},[5212,7840,5314],{"class":5356},[5212,7842,6092],{"class":5469},[5212,7844,6025],{"class":5356},[5212,7846,7847,7850,7852,7854,7857],{"class":5214,"line":6743},[5212,7848,7849],{"class":5469},"        firstName:",[5212,7851,7760],{"class":5469},[5212,7853,5314],{"class":5356},[5212,7855,7856],{"class":5469},"firstName",[5212,7858,6025],{"class":5356},[5212,7860,7861,7864,7866,7868,7871],{"class":5214,"line":6748},[5212,7862,7863],{"class":5469},"        lastName:",[5212,7865,7760],{"class":5469},[5212,7867,5314],{"class":5356},[5212,7869,7870],{"class":5469},"lastName",[5212,7872,6025],{"class":5356},[5212,7874,7875],{"class":5214,"line":6754},[5212,7876,7785],{"class":5356},[5212,7878,7879,7881,7883,7885,7887,7889,7892],{"class":5214,"line":6772},[5212,7880,7308],{"class":5465},[5212,7882,5505],{"class":5469},[5212,7884,5314],{"class":5356},[5212,7886,6006],{"class":5475},[5212,7888,5479],{"class":5356},[5212,7890,7891],{"class":5469},"profile",[5212,7893,5656],{"class":5356},[5212,7895,7896],{"class":5214,"line":6785},[5212,7897,5662],{"emptyLinePlaceholder":5661},[5212,7899,7900,7903,7905],{"class":5214,"line":6799},[5212,7901,7902],{"class":5465},"      return",[5212,7904,6546],{"class":5469},[5212,7906,5357],{"class":5356},[5212,7908,7909],{"class":5214,"line":6804},[5212,7910,7911],{"class":5356},"    });\n",[5212,7913,7915],{"class":5214,"line":7914},29,[5212,7916,6971],{"class":5356},[5212,7918,7920],{"class":5214,"line":7919},30,[5212,7921,7396],{"class":5356},[5185,7923,7925],{"id":7924},"автоматичний-commit-при-успіху","Автоматичний commit при успіху",[5190,7927,7928,7929,7931],{},"Якщо callback функція завершується без помилок (не кидає exception), TypeORM автоматично виконує ",[5110,7930,5414],{},", застосовуючи всі зміни до БД.",[5190,7933,7934],{},[5136,7935,7936],{},"SQL-еквівалент:",[5204,7938,7940],{"className":5340,"code":7939,"language":5342,"meta":5208,"style":5208},"BEGIN TRANSACTION;\nINSERT INTO users (email, password_hash) VALUES ('user@example.com', '$2b$10...');\nINSERT INTO profiles (user_id, first_name, last_name) VALUES (1, 'John', 'Doe');\nCOMMIT;  -- Автоматично\n",[5110,7941,7942,7950,7973,7998],{"__ignoreMap":5208},[5212,7943,7944,7946,7948],{"class":5214,"line":5215},[5212,7945,5350],{"class":5349},[5212,7947,5353],{"class":5349},[5212,7949,5357],{"class":5356},[5212,7951,7952,7955,7958,7961,7963,7966,7968,7971],{"class":5214,"line":5221},[5212,7953,7954],{"class":5349},"INSERT INTO",[5212,7956,7957],{"class":5356}," users (email, password_hash) ",[5212,7959,7960],{"class":5349},"VALUES",[5212,7962,5485],{"class":5356},[5212,7964,7965],{"class":5384},"'user@example.com'",[5212,7967,5888],{"class":5356},[5212,7969,7970],{"class":5384},"'$2b$10...'",[5212,7972,5656],{"class":5356},[5212,7974,7975,7977,7980,7982,7984,7986,7988,7991,7993,7996],{"class":5214,"line":5227},[5212,7976,7954],{"class":5349},[5212,7978,7979],{"class":5356}," profiles (user_id, first_name, last_name) ",[5212,7981,7960],{"class":5349},[5212,7983,5485],{"class":5356},[5212,7985,6234],{"class":5374},[5212,7987,5888],{"class":5356},[5212,7989,7990],{"class":5384},"'John'",[5212,7992,5888],{"class":5356},[5212,7994,7995],{"class":5384},"'Doe'",[5212,7997,5656],{"class":5356},[5212,7999,8000,8002,8004],{"class":5214,"line":5233},[5212,8001,5414],{"class":5349},[5212,8003,5691],{"class":5356},[5212,8005,8006],{"class":5547},"-- Автоматично\n",[5185,8008,8010],{"id":8009},"автоматичний-rollback-при-помилці","Автоматичний rollback при помилці",[5190,8012,8013,8014,8016],{},"Якщо у callback функції виникає помилка (throw або rejected promise), TypeORM автоматично виконує ",[5110,8015,5422],{},", скасовуючи всі зміни.",[5190,8018,8019],{},[5136,8020,5453],{},[5204,8022,8024],{"className":5456,"code":8023,"language":5458,"meta":5208,"style":5208},"try {\n  await dataSource.transaction(async (manager) => {\n    await manager.save(User, { email: 'user@example.com' });\n    await manager.save(Profile, { userId: 999 }); \u002F\u002F ❌ FK constraint violation\n    \u002F\u002F Ніколи не досягне цього рядка\n  });\n} catch (error) {\n  console.error('Transaction rolled back:', error.message);\n  \u002F\u002F БД залишилася без змін — користувач НЕ створений\n}\n",[5110,8025,8026,8032,8056,8080,8106,8111,8115,8127,8150,8155],{"__ignoreMap":5208},[5212,8027,8028,8030],{"class":5214,"line":5215},[5212,8029,7142],{"class":5465},[5212,8031,5497],{"class":5356},[5212,8033,8034,8036,8038,8040,8042,8044,8046,8048,8050,8052,8054],{"class":5214,"line":5221},[5212,8035,5502],{"class":5465},[5212,8037,5470],{"class":5469},[5212,8039,5314],{"class":5356},[5212,8041,5476],{"class":5475},[5212,8043,5479],{"class":5356},[5212,8045,5482],{"class":5349},[5212,8047,5485],{"class":5356},[5212,8049,5488],{"class":5469},[5212,8051,5491],{"class":5356},[5212,8053,5494],{"class":5349},[5212,8055,5497],{"class":5356},[5212,8057,8058,8061,8063,8065,8067,8069,8071,8073,8076,8078],{"class":5214,"line":5227},[5212,8059,8060],{"class":5465},"    await",[5212,8062,5505],{"class":5469},[5212,8064,5314],{"class":5356},[5212,8066,6006],{"class":5475},[5212,8068,5479],{"class":5356},[5212,8070,6402],{"class":5469},[5212,8072,5518],{"class":5356},[5212,8074,8075],{"class":5469},"email:",[5212,8077,6570],{"class":5384},[5212,8079,7018],{"class":5356},[5212,8081,8082,8084,8086,8088,8090,8092,8094,8096,8098,8101,8103],{"class":5214,"line":5233},[5212,8083,8060],{"class":5465},[5212,8085,5505],{"class":5469},[5212,8087,5314],{"class":5356},[5212,8089,6006],{"class":5475},[5212,8091,5479],{"class":5356},[5212,8093,6629],{"class":5469},[5212,8095,5518],{"class":5356},[5212,8097,7012],{"class":5469},[5212,8099,8100],{"class":5374}," 999",[5212,8102,5544],{"class":5356},[5212,8104,8105],{"class":5547},"\u002F\u002F ❌ FK constraint violation\n",[5212,8107,8108],{"class":5214,"line":5239},[5212,8109,8110],{"class":5547},"    \u002F\u002F Ніколи не досягне цього рядка\n",[5212,8112,8113],{"class":5214,"line":5245},[5212,8114,6050],{"class":5356},[5212,8116,8117,8119,8121,8123,8125],{"class":5214,"line":5251},[5212,8118,7351],{"class":5356},[5212,8120,7354],{"class":5465},[5212,8122,5485],{"class":5356},[5212,8124,7359],{"class":5469},[5212,8126,6948],{"class":5356},[5212,8128,8129,8131,8133,8135,8137,8140,8142,8144,8146,8148],{"class":5214,"line":5257},[5212,8130,7366],{"class":5469},[5212,8132,5314],{"class":5356},[5212,8134,7359],{"class":5475},[5212,8136,5479],{"class":5356},[5212,8138,8139],{"class":5384},"'Transaction rolled back:'",[5212,8141,5888],{"class":5356},[5212,8143,7359],{"class":5469},[5212,8145,5314],{"class":5356},[5212,8147,7384],{"class":5469},[5212,8149,5656],{"class":5356},[5212,8151,8152],{"class":5214,"line":5263},[5212,8153,8154],{"class":5547},"  \u002F\u002F БД залишилася без змін — користувач НЕ створений\n",[5212,8156,8157],{"class":5214,"line":5269},[5212,8158,7396],{"class":5356},[5190,8160,8161],{},[5136,8162,7936],{},[5204,8164,8166],{"className":5340,"code":8165,"language":5342,"meta":5208,"style":5208},"BEGIN TRANSACTION;\nINSERT INTO users (email) VALUES ('user@example.com');\nINSERT INTO profiles (user_id) VALUES (999);  -- ERROR: foreign key constraint\nROLLBACK;  -- Автоматично\n",[5110,8167,8168,8176,8191,8211],{"__ignoreMap":5208},[5212,8169,8170,8172,8174],{"class":5214,"line":5215},[5212,8171,5350],{"class":5349},[5212,8173,5353],{"class":5349},[5212,8175,5357],{"class":5356},[5212,8177,8178,8180,8183,8185,8187,8189],{"class":5214,"line":5221},[5212,8179,7954],{"class":5349},[5212,8181,8182],{"class":5356}," users (email) ",[5212,8184,7960],{"class":5349},[5212,8186,5485],{"class":5356},[5212,8188,7965],{"class":5384},[5212,8190,5656],{"class":5356},[5212,8192,8193,8195,8198,8200,8202,8205,8208],{"class":5214,"line":5227},[5212,8194,7954],{"class":5349},[5212,8196,8197],{"class":5356}," profiles (user_id) ",[5212,8199,7960],{"class":5349},[5212,8201,5485],{"class":5356},[5212,8203,8204],{"class":5374},"999",[5212,8206,8207],{"class":5356},");  ",[5212,8209,8210],{"class":5547},"-- ERROR: foreign key constraint\n",[5212,8212,8213,8215,8217],{"class":5214,"line":5233},[5212,8214,5422],{"class":5349},[5212,8216,5691],{"class":5356},[5212,8218,8006],{"class":5547},[5185,8220,8222],{"id":8221},"використання-transactional-entitymanager","Використання transactional EntityManager",[5190,8224,8225,8228,8229,8234],{},[5136,8226,8227],{},"Критично важливо:"," Всі операції у транзакції ",[5136,8230,8231,8232],{},"мають виконуватися через ",[5110,8233,5488],{},", переданий у callback, а не через звичайний repository.",[5190,8236,8237],{},[5136,8238,8239],{},"❌ Неправильно (операція поза транзакцією):",[5204,8241,8243],{"className":5456,"code":8242,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  await manager.save(User, { email: 'user@example.com' });\n  await profileRepository.save({ userId: 1 }); \u002F\u002F ❌ Використання repository поза транзакцією!\n});\n",[5110,8244,8245,8269,8291,8314],{"__ignoreMap":5208},[5212,8246,8247,8249,8251,8253,8255,8257,8259,8261,8263,8265,8267],{"class":5214,"line":5215},[5212,8248,5466],{"class":5465},[5212,8250,5470],{"class":5469},[5212,8252,5314],{"class":5356},[5212,8254,5476],{"class":5475},[5212,8256,5479],{"class":5356},[5212,8258,5482],{"class":5349},[5212,8260,5485],{"class":5356},[5212,8262,5488],{"class":5469},[5212,8264,5491],{"class":5356},[5212,8266,5494],{"class":5349},[5212,8268,5497],{"class":5356},[5212,8270,8271,8273,8275,8277,8279,8281,8283,8285,8287,8289],{"class":5214,"line":5221},[5212,8272,5502],{"class":5465},[5212,8274,5505],{"class":5469},[5212,8276,5314],{"class":5356},[5212,8278,6006],{"class":5475},[5212,8280,5479],{"class":5356},[5212,8282,6402],{"class":5469},[5212,8284,5518],{"class":5356},[5212,8286,8075],{"class":5469},[5212,8288,6570],{"class":5384},[5212,8290,7018],{"class":5356},[5212,8292,8293,8295,8298,8300,8302,8305,8307,8309,8311],{"class":5214,"line":5227},[5212,8294,5502],{"class":5465},[5212,8296,8297],{"class":5469}," profileRepository",[5212,8299,5314],{"class":5356},[5212,8301,6006],{"class":5475},[5212,8303,8304],{"class":5356},"({ ",[5212,8306,7012],{"class":5469},[5212,8308,6022],{"class":5374},[5212,8310,5544],{"class":5356},[5212,8312,8313],{"class":5547},"\u002F\u002F ❌ Використання repository поза транзакцією!\n",[5212,8315,8316],{"class":5214,"line":5233},[5212,8317,5597],{"class":5356},[5190,8319,8320],{},[5136,8321,8322],{},"✅ Правильно (всі операції через manager):",[5204,8324,8326],{"className":5456,"code":8325,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  await manager.save(User, { email: 'user@example.com' });\n  await manager.save(Profile, { userId: 1 }); \u002F\u002F ✅ Через transactional manager\n});\n",[5110,8327,8328,8352,8374,8399],{"__ignoreMap":5208},[5212,8329,8330,8332,8334,8336,8338,8340,8342,8344,8346,8348,8350],{"class":5214,"line":5215},[5212,8331,5466],{"class":5465},[5212,8333,5470],{"class":5469},[5212,8335,5314],{"class":5356},[5212,8337,5476],{"class":5475},[5212,8339,5479],{"class":5356},[5212,8341,5482],{"class":5349},[5212,8343,5485],{"class":5356},[5212,8345,5488],{"class":5469},[5212,8347,5491],{"class":5356},[5212,8349,5494],{"class":5349},[5212,8351,5497],{"class":5356},[5212,8353,8354,8356,8358,8360,8362,8364,8366,8368,8370,8372],{"class":5214,"line":5221},[5212,8355,5502],{"class":5465},[5212,8357,5505],{"class":5469},[5212,8359,5314],{"class":5356},[5212,8361,6006],{"class":5475},[5212,8363,5479],{"class":5356},[5212,8365,6402],{"class":5469},[5212,8367,5518],{"class":5356},[5212,8369,8075],{"class":5469},[5212,8371,6570],{"class":5384},[5212,8373,7018],{"class":5356},[5212,8375,8376,8378,8380,8382,8384,8386,8388,8390,8392,8394,8396],{"class":5214,"line":5227},[5212,8377,5502],{"class":5465},[5212,8379,5505],{"class":5469},[5212,8381,5314],{"class":5356},[5212,8383,6006],{"class":5475},[5212,8385,5479],{"class":5356},[5212,8387,6629],{"class":5469},[5212,8389,5518],{"class":5356},[5212,8391,7012],{"class":5469},[5212,8393,6022],{"class":5374},[5212,8395,5544],{"class":5356},[5212,8397,8398],{"class":5547},"\u002F\u002F ✅ Через transactional manager\n",[5212,8400,8401],{"class":5214,"line":5233},[5212,8402,5597],{"class":5356},[8404,8405,8406,8409,8411,8412,8415,8416,8418],"warning",{},[5136,8407,8408],{},"Чому це важливо:",[5882,8410],{},"\nRepository використовує ",[5136,8413,8414],{},"окреме з'єднання"," з БД. Операції через repository не входять у транзакцію і не підлягають rollback при помилці. Завжди використовуйте ",[5110,8417,5488],{}," з callback для всіх операцій у транзакції.",[5185,8420,8422],{"id":8421},"приклади-базових-транзакцій","Приклади базових транзакцій",[5190,8424,8425],{},[5136,8426,8427],{},"Приклад 1 — переказ коштів:",[5204,8429,8431],{"className":5456,"code":8430,"language":5458,"meta":5208,"style":5208},"async transferMoney(fromAccountId: number, toAccountId: number, amount: number): Promise\u003Cvoid> {\n  await this.dataSource.transaction(async (manager) => {\n    \u002F\u002F Зняти кошти з рахунку відправника\n    const result1 = await manager.decrement(\n      Account,\n      { id: fromAccountId },\n      'balance',\n      amount\n    );\n\n    if (result1.affected === 0) {\n      throw new Error('Source account not found or insufficient balance');\n    }\n\n    \u002F\u002F Додати кошти на рахунок отримувача\n    const result2 = await manager.increment(\n      Account,\n      { id: toAccountId },\n      'balance',\n      amount\n    );\n\n    if (result2.affected === 0) {\n      throw new Error('Destination account not found');\n    }\n\n    \u002F\u002F Створити запис про транзакцію\n    await manager.save(Transaction, {\n      fromAccountId,\n      toAccountId,\n      amount,\n      type: 'transfer',\n    });\n  });\n}\n",[5110,8432,8433,8479,8496,8501,8521,8528,8540,8547,8552,8557,8561,8569,8585,8589,8593,8598,8617,8623,8634,8640,8644,8648,8652,8659,8674,8678,8682,8687,8703,8710,8717,8725,8738,8743,8748],{"__ignoreMap":5208},[5212,8434,8435,8437,8440,8442,8445,8447,8450,8452,8455,8457,8459,8461,8464,8466,8468,8470,8472,8474,8477],{"class":5214,"line":5215},[5212,8436,5482],{"class":5469},[5212,8438,8439],{"class":5475}," transferMoney",[5212,8441,5479],{"class":5356},[5212,8443,8444],{"class":5469},"fromAccountId",[5212,8446,7447],{"class":5356},[5212,8448,8449],{"class":5469},"number",[5212,8451,5888],{"class":5356},[5212,8453,8454],{"class":5469},"toAccountId",[5212,8456,7447],{"class":5356},[5212,8458,8449],{"class":5469},[5212,8460,5888],{"class":5356},[5212,8462,8463],{"class":5469},"amount",[5212,8465,7447],{"class":5356},[5212,8467,8449],{"class":5469},[5212,8469,7683],{"class":5356},[5212,8471,7686],{"class":7450},[5212,8473,7689],{"class":5356},[5212,8475,8476],{"class":5349},"void",[5212,8478,7694],{"class":5356},[5212,8480,8481,8484,8486,8488,8490,8492,8494],{"class":5214,"line":5221},[5212,8482,8483],{"class":5356},"  await this.dataSource.transaction(",[5212,8485,5482],{"class":5475},[5212,8487,5485],{"class":5356},[5212,8489,5488],{"class":5469},[5212,8491,5491],{"class":5356},[5212,8493,5494],{"class":5349},[5212,8495,5497],{"class":5356},[5212,8497,8498],{"class":5214,"line":5227},[5212,8499,8500],{"class":5547},"    \u002F\u002F Зняти кошти з рахунку відправника\n",[5212,8502,8503,8505,8508,8510,8512,8514,8516,8518],{"class":5214,"line":5233},[5212,8504,7173],{"class":7450},[5212,8506,8507],{"class":5469}," result1",[5212,8509,5762],{"class":5356},[5212,8511,5466],{"class":5465},[5212,8513,5505],{"class":5469},[5212,8515,5314],{"class":5356},[5212,8517,6180],{"class":5475},[5212,8519,8520],{"class":5356},"(\n",[5212,8522,8523,8526],{"class":5214,"line":5239},[5212,8524,8525],{"class":5469},"      Account",[5212,8527,6025],{"class":5356},[5212,8529,8530,8533,8535,8538],{"class":5214,"line":5245},[5212,8531,8532],{"class":5356},"      { ",[5212,8534,5521],{"class":5469},[5212,8536,8537],{"class":5469}," fromAccountId",[5212,8539,6119],{"class":5356},[5212,8541,8542,8545],{"class":5214,"line":5251},[5212,8543,8544],{"class":5384},"      'balance'",[5212,8546,6025],{"class":5356},[5212,8548,8549],{"class":5214,"line":5257},[5212,8550,8551],{"class":5469},"      amount\n",[5212,8553,8554],{"class":5214,"line":5263},[5212,8555,8556],{"class":5356},"    );\n",[5212,8558,8559],{"class":5214,"line":5269},[5212,8560,5662],{"emptyLinePlaceholder":5661},[5212,8562,8563,8566],{"class":5214,"line":5275},[5212,8564,8565],{"class":5475},"    if",[5212,8567,8568],{"class":5356}," (result1.affected === 0) {\n",[5212,8570,8571,8574,8576,8578,8580,8583],{"class":5214,"line":5281},[5212,8572,8573],{"class":5465},"      throw",[5212,8575,6956],{"class":5349},[5212,8577,6959],{"class":5475},[5212,8579,5479],{"class":5356},[5212,8581,8582],{"class":5384},"'Source account not found or insufficient balance'",[5212,8584,5656],{"class":5356},[5212,8586,8587],{"class":5214,"line":5287},[5212,8588,7342],{"class":5356},[5212,8590,8591],{"class":5214,"line":5293},[5212,8592,5662],{"emptyLinePlaceholder":5661},[5212,8594,8595],{"class":5214,"line":6165},[5212,8596,8597],{"class":5547},"    \u002F\u002F Додати кошти на рахунок отримувача\n",[5212,8599,8600,8602,8605,8607,8609,8611,8613,8615],{"class":5214,"line":6171},[5212,8601,7173],{"class":7450},[5212,8603,8604],{"class":5469}," result2",[5212,8606,5762],{"class":5356},[5212,8608,5466],{"class":5465},[5212,8610,5505],{"class":5469},[5212,8612,5314],{"class":5356},[5212,8614,6397],{"class":5475},[5212,8616,8520],{"class":5356},[5212,8618,8619,8621],{"class":5214,"line":6207},[5212,8620,8525],{"class":5469},[5212,8622,6025],{"class":5356},[5212,8624,8625,8627,8629,8632],{"class":5214,"line":6239},[5212,8626,8532],{"class":5356},[5212,8628,5521],{"class":5469},[5212,8630,8631],{"class":5469}," toAccountId",[5212,8633,6119],{"class":5356},[5212,8635,8636,8638],{"class":5214,"line":6244},[5212,8637,8544],{"class":5384},[5212,8639,6025],{"class":5356},[5212,8641,8642],{"class":5214,"line":6250},[5212,8643,8551],{"class":5469},[5212,8645,8646],{"class":5214,"line":6738},[5212,8647,8556],{"class":5356},[5212,8649,8650],{"class":5214,"line":6743},[5212,8651,5662],{"emptyLinePlaceholder":5661},[5212,8653,8654,8656],{"class":5214,"line":6748},[5212,8655,8565],{"class":5475},[5212,8657,8658],{"class":5356}," (result2.affected === 0) {\n",[5212,8660,8661,8663,8665,8667,8669,8672],{"class":5214,"line":6754},[5212,8662,8573],{"class":5465},[5212,8664,6956],{"class":5349},[5212,8666,6959],{"class":5475},[5212,8668,5479],{"class":5356},[5212,8670,8671],{"class":5384},"'Destination account not found'",[5212,8673,5656],{"class":5356},[5212,8675,8676],{"class":5214,"line":6772},[5212,8677,7342],{"class":5356},[5212,8679,8680],{"class":5214,"line":6785},[5212,8681,5662],{"emptyLinePlaceholder":5661},[5212,8683,8684],{"class":5214,"line":6799},[5212,8685,8686],{"class":5547},"    \u002F\u002F Створити запис про транзакцію\n",[5212,8688,8689,8691,8693,8695,8697,8699,8701],{"class":5214,"line":6804},[5212,8690,8060],{"class":7450},[5212,8692,5505],{"class":7450},[5212,8694,5314],{"class":5356},[5212,8696,6006],{"class":7450},[5212,8698,5479],{"class":5356},[5212,8700,6444],{"class":5469},[5212,8702,6014],{"class":5356},[5212,8704,8705,8708],{"class":5214,"line":7914},[5212,8706,8707],{"class":5469},"      fromAccountId",[5212,8709,6025],{"class":5356},[5212,8711,8712,8715],{"class":5214,"line":7919},[5212,8713,8714],{"class":5469},"      toAccountId",[5212,8716,6025],{"class":5356},[5212,8718,8720,8723],{"class":5214,"line":8719},31,[5212,8721,8722],{"class":5469},"      amount",[5212,8724,6025],{"class":5356},[5212,8726,8728,8731,8733,8736],{"class":5214,"line":8727},32,[5212,8729,8730],{"class":5469},"      type",[5212,8732,7447],{"class":5356},[5212,8734,8735],{"class":5384},"'transfer'",[5212,8737,6025],{"class":5356},[5212,8739,8741],{"class":5214,"line":8740},33,[5212,8742,7911],{"class":5356},[5212,8744,8746],{"class":5214,"line":8745},34,[5212,8747,6050],{"class":5356},[5212,8749,8751],{"class":5214,"line":8750},35,[5212,8752,7396],{"class":5356},[5190,8754,8755],{},[5136,8756,8757],{},"Приклад 2 — видалення користувача з каскадним очищенням:",[5204,8759,8761],{"className":5456,"code":8760,"language":5458,"meta":5208,"style":5208},"async deleteUser(userId: number): Promise\u003Cvoid> {\n  await this.dataSource.transaction(async (manager) => {\n    \u002F\u002F Видалити всі пости користувача\n    await manager.delete(Post, { authorId: userId });\n\n    \u002F\u002F Видалити всі коментарі користувача\n    await manager.delete(Comment, { authorId: userId });\n\n    \u002F\u002F Видалити профіль\n    await manager.delete(Profile, { userId });\n\n    \u002F\u002F Видалити користувача\n    await manager.delete(User, { id: userId });\n  });\n}\n",[5110,8762,8763,8789,8805,8810,8837,8841,8846,8871,8875,8880,8900,8904,8909,8933,8937],{"__ignoreMap":5208},[5212,8764,8765,8767,8770,8772,8775,8777,8779,8781,8783,8785,8787],{"class":5214,"line":5215},[5212,8766,5482],{"class":5469},[5212,8768,8769],{"class":5475}," deleteUser",[5212,8771,5479],{"class":5356},[5212,8773,8774],{"class":5469},"userId",[5212,8776,7447],{"class":5356},[5212,8778,8449],{"class":5469},[5212,8780,7683],{"class":5356},[5212,8782,7686],{"class":7450},[5212,8784,7689],{"class":5356},[5212,8786,8476],{"class":5349},[5212,8788,7694],{"class":5356},[5212,8790,8791,8793,8795,8797,8799,8801,8803],{"class":5214,"line":5221},[5212,8792,8483],{"class":5356},[5212,8794,5482],{"class":5475},[5212,8796,5485],{"class":5356},[5212,8798,5488],{"class":5469},[5212,8800,5491],{"class":5356},[5212,8802,5494],{"class":5349},[5212,8804,5497],{"class":5356},[5212,8806,8807],{"class":5214,"line":5227},[5212,8808,8809],{"class":5547},"    \u002F\u002F Видалити всі пости користувача\n",[5212,8811,8812,8814,8816,8818,8821,8823,8826,8828,8831,8833,8835],{"class":5214,"line":5233},[5212,8813,8060],{"class":7450},[5212,8815,5505],{"class":7450},[5212,8817,5314],{"class":5356},[5212,8819,8820],{"class":7450},"delete",[5212,8822,5479],{"class":5356},[5212,8824,8825],{"class":5469},"Post",[5212,8827,5518],{"class":5356},[5212,8829,8830],{"class":5469},"authorId",[5212,8832,7447],{"class":5356},[5212,8834,8774],{"class":5469},[5212,8836,7018],{"class":5356},[5212,8838,8839],{"class":5214,"line":5239},[5212,8840,5662],{"emptyLinePlaceholder":5661},[5212,8842,8843],{"class":5214,"line":5245},[5212,8844,8845],{"class":5547},"    \u002F\u002F Видалити всі коментарі користувача\n",[5212,8847,8848,8850,8852,8854,8856,8858,8861,8863,8865,8867,8869],{"class":5214,"line":5251},[5212,8849,8060],{"class":7450},[5212,8851,5505],{"class":7450},[5212,8853,5314],{"class":5356},[5212,8855,8820],{"class":7450},[5212,8857,5479],{"class":5356},[5212,8859,8860],{"class":5469},"Comment",[5212,8862,5518],{"class":5356},[5212,8864,8830],{"class":5469},[5212,8866,7447],{"class":5356},[5212,8868,8774],{"class":5469},[5212,8870,7018],{"class":5356},[5212,8872,8873],{"class":5214,"line":5257},[5212,8874,5662],{"emptyLinePlaceholder":5661},[5212,8876,8877],{"class":5214,"line":5263},[5212,8878,8879],{"class":5547},"    \u002F\u002F Видалити профіль\n",[5212,8881,8882,8884,8886,8888,8890,8892,8894,8896,8898],{"class":5214,"line":5269},[5212,8883,8060],{"class":7450},[5212,8885,5505],{"class":7450},[5212,8887,5314],{"class":5356},[5212,8889,8820],{"class":7450},[5212,8891,5479],{"class":5356},[5212,8893,6629],{"class":5469},[5212,8895,5518],{"class":5356},[5212,8897,8774],{"class":5469},[5212,8899,7018],{"class":5356},[5212,8901,8902],{"class":5214,"line":5275},[5212,8903,5662],{"emptyLinePlaceholder":5661},[5212,8905,8906],{"class":5214,"line":5281},[5212,8907,8908],{"class":5547},"    \u002F\u002F Видалити користувача\n",[5212,8910,8911,8913,8915,8917,8919,8921,8923,8925,8927,8929,8931],{"class":5214,"line":5287},[5212,8912,8060],{"class":7450},[5212,8914,5505],{"class":7450},[5212,8916,5314],{"class":5356},[5212,8918,8820],{"class":7450},[5212,8920,5479],{"class":5356},[5212,8922,6402],{"class":5469},[5212,8924,5518],{"class":5356},[5212,8926,6092],{"class":5469},[5212,8928,7447],{"class":5356},[5212,8930,8774],{"class":5469},[5212,8932,7018],{"class":5356},[5212,8934,8935],{"class":5214,"line":5293},[5212,8936,6050],{"class":5356},[5212,8938,8939],{"class":5214,"line":6165},[5212,8940,7396],{"class":5356},[5177,8942],{},[5180,8944,8946],{"id":8945},"робота-з-entitymanager-у-транзакції","Робота з EntityManager у транзакції",[5185,8948,8950],{"id":8949},"отримання-manager-з-callback","Отримання manager з callback",[5190,8952,8953,8954,8956,8957,8960],{},"При використанні ",[5110,8955,5112],{}," TypeORM передає ",[5136,8958,8959],{},"transactional EntityManager"," як перший параметр callback функції.",[5204,8962,8964],{"className":5456,"code":8963,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F manager — це EntityManager, прив'язаний до поточної транзакції\n  console.log(manager.constructor.name); \u002F\u002F EntityManager\n});\n",[5110,8965,8966,8990,8995,9024],{"__ignoreMap":5208},[5212,8967,8968,8970,8972,8974,8976,8978,8980,8982,8984,8986,8988],{"class":5214,"line":5215},[5212,8969,5466],{"class":5465},[5212,8971,5470],{"class":5469},[5212,8973,5314],{"class":5356},[5212,8975,5476],{"class":5475},[5212,8977,5479],{"class":5356},[5212,8979,5482],{"class":5349},[5212,8981,5485],{"class":5356},[5212,8983,5488],{"class":5469},[5212,8985,5491],{"class":5356},[5212,8987,5494],{"class":5349},[5212,8989,5497],{"class":5356},[5212,8991,8992],{"class":5214,"line":5221},[5212,8993,8994],{"class":5547},"  \u002F\u002F manager — це EntityManager, прив'язаний до поточної транзакції\n",[5212,8996,8997,8999,9001,9004,9006,9008,9010,9013,9015,9018,9021],{"class":5214,"line":5227},[5212,8998,7366],{"class":5469},[5212,9000,5314],{"class":5356},[5212,9002,9003],{"class":5475},"log",[5212,9005,5479],{"class":5356},[5212,9007,5488],{"class":5469},[5212,9009,5314],{"class":5356},[5212,9011,9012],{"class":5469},"constructor",[5212,9014,5314],{"class":5356},[5212,9016,9017],{"class":5469},"name",[5212,9019,9020],{"class":5356},"); ",[5212,9022,9023],{"class":5547},"\u002F\u002F EntityManager\n",[5212,9025,9026],{"class":5214,"line":5233},[5212,9027,5597],{"class":5356},[5190,9029,9030,9032],{},[5136,9031,7451],{}," у транзакції має:",[5092,9034,9035,9038,9044],{},[5095,9036,9037],{},"Власне з'єднання з БД, виділене для цієї транзакції.",[5095,9039,9040,9041,5314],{},"Усі операції виконуються у контексті ",[5110,9042,9043],{},"BEGIN ... COMMIT\u002FROLLBACK",[5095,9045,9046],{},"Доступ до тих самих методів, що й звичайний EntityManager або Repository.",[5185,9048,9050],{"id":9049},"всі-операції-через-manager","Всі операції через manager",[5190,9052,9053,9056,9057,9061],{},[5136,9054,9055],{},"Правило:"," Всі операції з БД у транзакції ",[5136,9058,8231,9059],{},[5110,9060,5488],{},", а не через repository або DataSource.",[5190,9063,9064],{},[5136,9065,9066],{},"Методи EntityManager для транзакцій:",[5204,9068,9070],{"className":5456,"code":9069,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F CREATE операції\n  const user = manager.create(User, { email: 'user@example.com' });\n  await manager.save(user);\n\n  \u002F\u002F READ операції\n  const foundUser = await manager.findOne(User, { where: { id: user.id } });\n  const allUsers = await manager.find(User);\n\n  \u002F\u002F UPDATE операції\n  await manager.update(User, { id: user.id }, { isActive: true });\n  await manager.increment(User, { id: user.id }, 'loginCount', 1);\n\n  \u002F\u002F DELETE операції\n  await manager.delete(User, { id: user.id });\n  await manager.remove(user);\n\n  \u002F\u002F Підрахунок\n  const count = await manager.count(User, { where: { isActive: true } });\n\n  \u002F\u002F Query Builder\n  const posts = await manager\n    .createQueryBuilder(Post, 'post')\n    .where('post.authorId = :authorId', { authorId: user.id })\n    .getMany();\n});\n",[5110,9071,9072,9096,9101,9127,9143,9147,9152,9189,9212,9216,9221,9253,9288,9292,9297,9323,9340,9344,9349,9383,9387,9392,9406,9425,9451,9461],{"__ignoreMap":5208},[5212,9073,9074,9076,9078,9080,9082,9084,9086,9088,9090,9092,9094],{"class":5214,"line":5215},[5212,9075,5466],{"class":5465},[5212,9077,5470],{"class":5469},[5212,9079,5314],{"class":5356},[5212,9081,5476],{"class":5475},[5212,9083,5479],{"class":5356},[5212,9085,5482],{"class":5349},[5212,9087,5485],{"class":5356},[5212,9089,5488],{"class":5469},[5212,9091,5491],{"class":5356},[5212,9093,5494],{"class":5349},[5212,9095,5497],{"class":5356},[5212,9097,9098],{"class":5214,"line":5221},[5212,9099,9100],{"class":5547},"  \u002F\u002F CREATE операції\n",[5212,9102,9103,9105,9107,9109,9111,9113,9115,9117,9119,9121,9123,9125],{"class":5214,"line":5227},[5212,9104,5992],{"class":5349},[5212,9106,6546],{"class":5744},[5212,9108,5762],{"class":5356},[5212,9110,5488],{"class":5469},[5212,9112,5314],{"class":5356},[5212,9114,7746],{"class":5475},[5212,9116,5479],{"class":5356},[5212,9118,6402],{"class":5469},[5212,9120,5518],{"class":5356},[5212,9122,8075],{"class":5469},[5212,9124,6570],{"class":5384},[5212,9126,7018],{"class":5356},[5212,9128,9129,9131,9133,9135,9137,9139,9141],{"class":5214,"line":5233},[5212,9130,5502],{"class":5465},[5212,9132,5505],{"class":5469},[5212,9134,5314],{"class":5356},[5212,9136,6006],{"class":5475},[5212,9138,5479],{"class":5356},[5212,9140,7249],{"class":5469},[5212,9142,5656],{"class":5356},[5212,9144,9145],{"class":5214,"line":5239},[5212,9146,5662],{"emptyLinePlaceholder":5661},[5212,9148,9149],{"class":5214,"line":5245},[5212,9150,9151],{"class":5547},"  \u002F\u002F READ операції\n",[5212,9153,9154,9156,9159,9161,9163,9165,9167,9169,9171,9173,9175,9177,9179,9181,9183,9185,9187],{"class":5214,"line":5251},[5212,9155,5992],{"class":5349},[5212,9157,9158],{"class":5744}," foundUser",[5212,9160,5762],{"class":5356},[5212,9162,5466],{"class":5465},[5212,9164,5505],{"class":5469},[5212,9166,5314],{"class":5356},[5212,9168,6878],{"class":5475},[5212,9170,5479],{"class":5356},[5212,9172,6402],{"class":5469},[5212,9174,5518],{"class":5356},[5212,9176,7196],{"class":5469},[5212,9178,6893],{"class":5356},[5212,9180,5521],{"class":5469},[5212,9182,6546],{"class":5469},[5212,9184,5314],{"class":5356},[5212,9186,6092],{"class":5469},[5212,9188,7206],{"class":5356},[5212,9190,9191,9193,9196,9198,9200,9202,9204,9206,9208,9210],{"class":5214,"line":5257},[5212,9192,5992],{"class":5349},[5212,9194,9195],{"class":5744}," allUsers",[5212,9197,5762],{"class":5356},[5212,9199,5466],{"class":5465},[5212,9201,5505],{"class":5469},[5212,9203,5314],{"class":5356},[5212,9205,7187],{"class":5475},[5212,9207,5479],{"class":5356},[5212,9209,6402],{"class":5469},[5212,9211,5656],{"class":5356},[5212,9213,9214],{"class":5214,"line":5263},[5212,9215,5662],{"emptyLinePlaceholder":5661},[5212,9217,9218],{"class":5214,"line":5269},[5212,9219,9220],{"class":5547},"  \u002F\u002F UPDATE операції\n",[5212,9222,9223,9225,9227,9229,9231,9233,9235,9237,9239,9241,9243,9245,9247,9249,9251],{"class":5214,"line":5275},[5212,9224,5502],{"class":5465},[5212,9226,5505],{"class":5469},[5212,9228,5314],{"class":5356},[5212,9230,5510],{"class":5475},[5212,9232,5479],{"class":5356},[5212,9234,6402],{"class":5469},[5212,9236,5518],{"class":5356},[5212,9238,5521],{"class":5469},[5212,9240,6546],{"class":5469},[5212,9242,5314],{"class":5356},[5212,9244,6092],{"class":5469},[5212,9246,5527],{"class":5356},[5212,9248,7201],{"class":5469},[5212,9250,6733],{"class":5349},[5212,9252,7018],{"class":5356},[5212,9254,9255,9257,9259,9261,9263,9265,9267,9269,9271,9273,9275,9277,9279,9282,9284,9286],{"class":5214,"line":5281},[5212,9256,5502],{"class":5465},[5212,9258,5505],{"class":5469},[5212,9260,5314],{"class":5356},[5212,9262,6397],{"class":5475},[5212,9264,5479],{"class":5356},[5212,9266,6402],{"class":5469},[5212,9268,5518],{"class":5356},[5212,9270,5521],{"class":5469},[5212,9272,6546],{"class":5469},[5212,9274,5314],{"class":5356},[5212,9276,6092],{"class":5469},[5212,9278,6194],{"class":5356},[5212,9280,9281],{"class":5384},"'loginCount'",[5212,9283,5888],{"class":5356},[5212,9285,6234],{"class":5374},[5212,9287,5656],{"class":5356},[5212,9289,9290],{"class":5214,"line":5287},[5212,9291,5662],{"emptyLinePlaceholder":5661},[5212,9293,9294],{"class":5214,"line":5293},[5212,9295,9296],{"class":5547},"  \u002F\u002F DELETE операції\n",[5212,9298,9299,9301,9303,9305,9307,9309,9311,9313,9315,9317,9319,9321],{"class":5214,"line":6165},[5212,9300,5502],{"class":5465},[5212,9302,5505],{"class":5469},[5212,9304,5314],{"class":5356},[5212,9306,8820],{"class":5475},[5212,9308,5479],{"class":5356},[5212,9310,6402],{"class":5469},[5212,9312,5518],{"class":5356},[5212,9314,5521],{"class":5469},[5212,9316,6546],{"class":5469},[5212,9318,5314],{"class":5356},[5212,9320,6092],{"class":5469},[5212,9322,7018],{"class":5356},[5212,9324,9325,9327,9329,9331,9334,9336,9338],{"class":5214,"line":6171},[5212,9326,5502],{"class":5465},[5212,9328,5505],{"class":5469},[5212,9330,5314],{"class":5356},[5212,9332,9333],{"class":5475},"remove",[5212,9335,5479],{"class":5356},[5212,9337,7249],{"class":5469},[5212,9339,5656],{"class":5356},[5212,9341,9342],{"class":5214,"line":6207},[5212,9343,5662],{"emptyLinePlaceholder":5661},[5212,9345,9346],{"class":5214,"line":6239},[5212,9347,9348],{"class":5547},"  \u002F\u002F Підрахунок\n",[5212,9350,9351,9353,9356,9358,9360,9362,9364,9367,9369,9371,9373,9375,9377,9379,9381],{"class":5214,"line":6244},[5212,9352,5992],{"class":5349},[5212,9354,9355],{"class":5744}," count",[5212,9357,5762],{"class":5356},[5212,9359,5466],{"class":5465},[5212,9361,5505],{"class":5469},[5212,9363,5314],{"class":5356},[5212,9365,9366],{"class":5475},"count",[5212,9368,5479],{"class":5356},[5212,9370,6402],{"class":5469},[5212,9372,5518],{"class":5356},[5212,9374,7196],{"class":5469},[5212,9376,6893],{"class":5356},[5212,9378,7201],{"class":5469},[5212,9380,6733],{"class":5349},[5212,9382,7206],{"class":5356},[5212,9384,9385],{"class":5214,"line":6250},[5212,9386,5662],{"emptyLinePlaceholder":5661},[5212,9388,9389],{"class":5214,"line":6738},[5212,9390,9391],{"class":5547},"  \u002F\u002F Query Builder\n",[5212,9393,9394,9396,9399,9401,9403],{"class":5214,"line":6743},[5212,9395,5992],{"class":5349},[5212,9397,9398],{"class":5744}," posts",[5212,9400,5762],{"class":5356},[5212,9402,5466],{"class":5465},[5212,9404,9405],{"class":5469}," manager\n",[5212,9407,9408,9411,9414,9416,9418,9420,9423],{"class":5214,"line":6748},[5212,9409,9410],{"class":5356},"    .",[5212,9412,9413],{"class":5475},"createQueryBuilder",[5212,9415,5479],{"class":5356},[5212,9417,8825],{"class":5469},[5212,9419,5888],{"class":5356},[5212,9421,9422],{"class":5384},"'post'",[5212,9424,5797],{"class":5356},[5212,9426,9427,9429,9432,9434,9437,9439,9442,9444,9446,9448],{"class":5214,"line":6754},[5212,9428,9410],{"class":5356},[5212,9430,9431],{"class":5475},"where",[5212,9433,5479],{"class":5356},[5212,9435,9436],{"class":5384},"'post.authorId = :authorId'",[5212,9438,5518],{"class":5356},[5212,9440,9441],{"class":5469},"authorId:",[5212,9443,6546],{"class":5469},[5212,9445,5314],{"class":5356},[5212,9447,6092],{"class":5469},[5212,9449,9450],{"class":5356}," })\n",[5212,9452,9453,9455,9458],{"class":5214,"line":6772},[5212,9454,9410],{"class":5356},[5212,9456,9457],{"class":5475},"getMany",[5212,9459,9460],{"class":5356},"();\n",[5212,9462,9463],{"class":5214,"line":6785},[5212,9464,5597],{"class":5356},[5185,9466,9468,5888,9471,5888,9474],{"id":9467},"managersave-managerupdate-managerdelete",[5110,9469,9470],{},"manager.save()",[5110,9472,9473],{},"manager.update()",[5110,9475,9476],{},"manager.delete()",[5190,9478,9479,9484],{},[5136,9480,9481],{},[5110,9482,9483],{},"manager.save(entity)"," — зберігає нову або оновлює існуючу entity:",[5204,9486,9488],{"className":5456,"code":9487,"language":5458,"meta":5208,"style":5208},"await manager.save(User, { id: 1, email: 'updated@example.com' });\n",[5110,9489,9490],{"__ignoreMap":5208},[5212,9491,9492,9494,9496,9498,9500,9502,9504,9506,9508,9510,9512,9514,9517],{"class":5214,"line":5215},[5212,9493,5466],{"class":5465},[5212,9495,5505],{"class":5469},[5212,9497,5314],{"class":5356},[5212,9499,6006],{"class":5475},[5212,9501,5479],{"class":5356},[5212,9503,6402],{"class":5469},[5212,9505,5518],{"class":5356},[5212,9507,5521],{"class":5469},[5212,9509,6022],{"class":5374},[5212,9511,5888],{"class":5356},[5212,9513,8075],{"class":5469},[5212,9515,9516],{"class":5384}," 'updated@example.com'",[5212,9518,7018],{"class":5356},[5190,9520,9521,9526],{},[5136,9522,9523],{},[5110,9524,9525],{},"manager.update(Entity, criteria, partialEntity)"," — оновлює записи без завантаження entities:",[5204,9528,9530],{"className":5456,"code":9529,"language":5458,"meta":5208,"style":5208},"await manager.update(User, { id: 1 }, { isActive: false });\n",[5110,9531,9532],{"__ignoreMap":5208},[5212,9533,9534,9536,9538,9540,9542,9544,9546,9548,9550,9552,9554,9556,9559],{"class":5214,"line":5215},[5212,9535,5466],{"class":5465},[5212,9537,5505],{"class":5469},[5212,9539,5314],{"class":5356},[5212,9541,5510],{"class":5475},[5212,9543,5479],{"class":5356},[5212,9545,6402],{"class":5469},[5212,9547,5518],{"class":5356},[5212,9549,5521],{"class":5469},[5212,9551,6022],{"class":5374},[5212,9553,5527],{"class":5356},[5212,9555,7201],{"class":5469},[5212,9557,9558],{"class":5349}," false",[5212,9560,7018],{"class":5356},[5190,9562,9563,9568],{},[5136,9564,9565],{},[5110,9566,9567],{},"manager.delete(Entity, criteria)"," — видаляє записи без завантаження:",[5204,9570,9572],{"className":5456,"code":9571,"language":5458,"meta":5208,"style":5208},"await manager.delete(User, { id: 1 });\n",[5110,9573,9574],{"__ignoreMap":5208},[5212,9575,9576,9578,9580,9582,9584,9586,9588,9590,9592,9594],{"class":5214,"line":5215},[5212,9577,5466],{"class":5465},[5212,9579,5505],{"class":5469},[5212,9581,5314],{"class":5356},[5212,9583,8820],{"class":5475},[5212,9585,5479],{"class":5356},[5212,9587,6402],{"class":5469},[5212,9589,5518],{"class":5356},[5212,9591,5521],{"class":5469},[5212,9593,6022],{"class":5374},[5212,9595,7018],{"class":5356},[5190,9597,9598,9603],{},[5136,9599,9600],{},[5110,9601,9602],{},"manager.remove(entity)"," — видаляє завантажену entity (тригерить lifecycle hooks):",[5204,9605,9607],{"className":5456,"code":9606,"language":5458,"meta":5208,"style":5208},"const user = await manager.findOne(User, { where: { id: 1 } });\nawait manager.remove(user);\n",[5110,9608,9609,9641],{"__ignoreMap":5208},[5212,9610,9611,9613,9615,9617,9619,9621,9623,9625,9627,9629,9631,9633,9635,9637,9639],{"class":5214,"line":5215},[5212,9612,7220],{"class":5349},[5212,9614,6546],{"class":5744},[5212,9616,5762],{"class":5356},[5212,9618,5466],{"class":5465},[5212,9620,5505],{"class":5469},[5212,9622,5314],{"class":5356},[5212,9624,6878],{"class":5475},[5212,9626,5479],{"class":5356},[5212,9628,6402],{"class":5469},[5212,9630,5518],{"class":5356},[5212,9632,7196],{"class":5469},[5212,9634,6893],{"class":5356},[5212,9636,5521],{"class":5469},[5212,9638,6022],{"class":5374},[5212,9640,7206],{"class":5356},[5212,9642,9643,9645,9647,9649,9651,9653,9655],{"class":5214,"line":5221},[5212,9644,5466],{"class":5465},[5212,9646,5505],{"class":5469},[5212,9648,5314],{"class":5356},[5212,9650,9333],{"class":5475},[5212,9652,5479],{"class":5356},[5212,9654,7249],{"class":5469},[5212,9656,5656],{"class":5356},[5185,9658,9660],{"id":9659},"важливість-використання-саме-transactional-manager","Важливість використання саме transactional manager",[5190,9662,9663],{},[5136,9664,9665],{},"Проблема змішування manager та repository:",[5204,9667,9669],{"className":5456,"code":9668,"language":5458,"meta":5208,"style":5208},"\u002F\u002F ❌ НЕПРАВИЛЬНО\nawait dataSource.transaction(async (manager) => {\n  await manager.save(User, { email: 'user@example.com' });\n  \n  \u002F\u002F Використання repository поза транзакцією!\n  await this.userRepository.update({ id: 1 }, { isActive: true });\n  \u002F\u002F Ця операція НЕ входить у транзакцію і не відкотиться при помилці\n});\n",[5110,9670,9671,9676,9700,9722,9727,9732,9761,9766],{"__ignoreMap":5208},[5212,9672,9673],{"class":5214,"line":5215},[5212,9674,9675],{"class":5547},"\u002F\u002F ❌ НЕПРАВИЛЬНО\n",[5212,9677,9678,9680,9682,9684,9686,9688,9690,9692,9694,9696,9698],{"class":5214,"line":5221},[5212,9679,5466],{"class":5465},[5212,9681,5470],{"class":5469},[5212,9683,5314],{"class":5356},[5212,9685,5476],{"class":5475},[5212,9687,5479],{"class":5356},[5212,9689,5482],{"class":5349},[5212,9691,5485],{"class":5356},[5212,9693,5488],{"class":5469},[5212,9695,5491],{"class":5356},[5212,9697,5494],{"class":5349},[5212,9699,5497],{"class":5356},[5212,9701,9702,9704,9706,9708,9710,9712,9714,9716,9718,9720],{"class":5214,"line":5227},[5212,9703,5502],{"class":5465},[5212,9705,5505],{"class":5469},[5212,9707,5314],{"class":5356},[5212,9709,6006],{"class":5475},[5212,9711,5479],{"class":5356},[5212,9713,6402],{"class":5469},[5212,9715,5518],{"class":5356},[5212,9717,8075],{"class":5469},[5212,9719,6570],{"class":5384},[5212,9721,7018],{"class":5356},[5212,9723,9724],{"class":5214,"line":5233},[5212,9725,9726],{"class":5356},"  \n",[5212,9728,9729],{"class":5214,"line":5239},[5212,9730,9731],{"class":5547},"  \u002F\u002F Використання repository поза транзакцією!\n",[5212,9733,9734,9736,9738,9740,9743,9745,9747,9749,9751,9753,9755,9757,9759],{"class":5214,"line":5245},[5212,9735,5502],{"class":5465},[5212,9737,7702],{"class":5349},[5212,9739,5314],{"class":5356},[5212,9741,9742],{"class":5469},"userRepository",[5212,9744,5314],{"class":5356},[5212,9746,5510],{"class":5475},[5212,9748,8304],{"class":5356},[5212,9750,5521],{"class":5469},[5212,9752,6022],{"class":5374},[5212,9754,5527],{"class":5356},[5212,9756,7201],{"class":5469},[5212,9758,6733],{"class":5349},[5212,9760,7018],{"class":5356},[5212,9762,9763],{"class":5214,"line":5251},[5212,9764,9765],{"class":5547},"  \u002F\u002F Ця операція НЕ входить у транзакцію і не відкотиться при помилці\n",[5212,9767,9768],{"class":5214,"line":5257},[5212,9769,5597],{"class":5356},[5190,9771,9772],{},[5136,9773,9774],{},"Правильний підхід:",[5204,9776,9778],{"className":5456,"code":9777,"language":5458,"meta":5208,"style":5208},"\u002F\u002F ✅ ПРАВИЛЬНО\nawait dataSource.transaction(async (manager) => {\n  await manager.save(User, { email: 'user@example.com' });\n  await manager.update(User, { id: 1 }, { isActive: true });\n  \u002F\u002F Обидві операції у транзакції\n});\n",[5110,9779,9780,9785,9809,9831,9859,9864],{"__ignoreMap":5208},[5212,9781,9782],{"class":5214,"line":5215},[5212,9783,9784],{"class":5547},"\u002F\u002F ✅ ПРАВИЛЬНО\n",[5212,9786,9787,9789,9791,9793,9795,9797,9799,9801,9803,9805,9807],{"class":5214,"line":5221},[5212,9788,5466],{"class":5465},[5212,9790,5470],{"class":5469},[5212,9792,5314],{"class":5356},[5212,9794,5476],{"class":5475},[5212,9796,5479],{"class":5356},[5212,9798,5482],{"class":5349},[5212,9800,5485],{"class":5356},[5212,9802,5488],{"class":5469},[5212,9804,5491],{"class":5356},[5212,9806,5494],{"class":5349},[5212,9808,5497],{"class":5356},[5212,9810,9811,9813,9815,9817,9819,9821,9823,9825,9827,9829],{"class":5214,"line":5227},[5212,9812,5502],{"class":5465},[5212,9814,5505],{"class":5469},[5212,9816,5314],{"class":5356},[5212,9818,6006],{"class":5475},[5212,9820,5479],{"class":5356},[5212,9822,6402],{"class":5469},[5212,9824,5518],{"class":5356},[5212,9826,8075],{"class":5469},[5212,9828,6570],{"class":5384},[5212,9830,7018],{"class":5356},[5212,9832,9833,9835,9837,9839,9841,9843,9845,9847,9849,9851,9853,9855,9857],{"class":5214,"line":5233},[5212,9834,5502],{"class":5465},[5212,9836,5505],{"class":5469},[5212,9838,5314],{"class":5356},[5212,9840,5510],{"class":5475},[5212,9842,5479],{"class":5356},[5212,9844,6402],{"class":5469},[5212,9846,5518],{"class":5356},[5212,9848,5521],{"class":5469},[5212,9850,6022],{"class":5374},[5212,9852,5527],{"class":5356},[5212,9854,7201],{"class":5469},[5212,9856,6733],{"class":5349},[5212,9858,7018],{"class":5356},[5212,9860,9861],{"class":5214,"line":5239},[5212,9862,9863],{"class":5547},"  \u002F\u002F Обидві операції у транзакції\n",[5212,9865,9866],{"class":5214,"line":5245},[5212,9867,5597],{"class":5356},[9869,9870,9871,9876,9879],"tip",{},[5190,9872,9873],{},[5136,9874,9875],{},"Альтернатива — отримання transactional repository:",[5190,9877,9878],{},"Якщо вам зручніше працювати з repository, отримайте його з manager:",[5204,9880,9882],{"className":5456,"code":9881,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  const userRepository = manager.getRepository(User);\n  const postRepository = manager.getRepository(Post);\n\n  await userRepository.save({ email: 'user@example.com' });\n  await postRepository.save({ title: 'Post', authorId: 1 });\n  \u002F\u002F Обидва repository використовують transactional manager\n});\n",[5110,9883,9884,9908,9930,9951,9955,9973,9999,10004],{"__ignoreMap":5208},[5212,9885,9886,9888,9890,9892,9894,9896,9898,9900,9902,9904,9906],{"class":5214,"line":5215},[5212,9887,5466],{"class":5465},[5212,9889,5470],{"class":5469},[5212,9891,5314],{"class":5356},[5212,9893,5476],{"class":5475},[5212,9895,5479],{"class":5356},[5212,9897,5482],{"class":5349},[5212,9899,5485],{"class":5356},[5212,9901,5488],{"class":5469},[5212,9903,5491],{"class":5356},[5212,9905,5494],{"class":5349},[5212,9907,5497],{"class":5356},[5212,9909,9910,9912,9915,9917,9919,9921,9924,9926,9928],{"class":5214,"line":5221},[5212,9911,5992],{"class":5349},[5212,9913,9914],{"class":5744}," userRepository",[5212,9916,5762],{"class":5356},[5212,9918,5488],{"class":5469},[5212,9920,5314],{"class":5356},[5212,9922,9923],{"class":5475},"getRepository",[5212,9925,5479],{"class":5356},[5212,9927,6402],{"class":5469},[5212,9929,5656],{"class":5356},[5212,9931,9932,9934,9937,9939,9941,9943,9945,9947,9949],{"class":5214,"line":5227},[5212,9933,5992],{"class":5349},[5212,9935,9936],{"class":5744}," postRepository",[5212,9938,5762],{"class":5356},[5212,9940,5488],{"class":5469},[5212,9942,5314],{"class":5356},[5212,9944,9923],{"class":5475},[5212,9946,5479],{"class":5356},[5212,9948,8825],{"class":5469},[5212,9950,5656],{"class":5356},[5212,9952,9953],{"class":5214,"line":5233},[5212,9954,5662],{"emptyLinePlaceholder":5661},[5212,9956,9957,9959,9961,9963,9965,9967,9969,9971],{"class":5214,"line":5239},[5212,9958,5502],{"class":5465},[5212,9960,9914],{"class":5469},[5212,9962,5314],{"class":5356},[5212,9964,6006],{"class":5475},[5212,9966,8304],{"class":5356},[5212,9968,8075],{"class":5469},[5212,9970,6570],{"class":5384},[5212,9972,7018],{"class":5356},[5212,9974,9975,9977,9979,9981,9983,9985,9988,9991,9993,9995,9997],{"class":5214,"line":5245},[5212,9976,5502],{"class":5465},[5212,9978,9936],{"class":5469},[5212,9980,5314],{"class":5356},[5212,9982,6006],{"class":5475},[5212,9984,8304],{"class":5356},[5212,9986,9987],{"class":5469},"title:",[5212,9989,9990],{"class":5384}," 'Post'",[5212,9992,5888],{"class":5356},[5212,9994,9441],{"class":5469},[5212,9996,6022],{"class":5374},[5212,9998,7018],{"class":5356},[5212,10000,10001],{"class":5214,"line":5251},[5212,10002,10003],{"class":5547},"  \u002F\u002F Обидва repository використовують transactional manager\n",[5212,10005,10006],{"class":5214,"line":5257},[5212,10007,5597],{"class":5356},[5177,10009],{},[5180,10011,10013],{"id":10012},"queryrunner-для-складних-сценаріїв","QueryRunner для складних сценаріїв",[5185,10015,10017],{"id":10016},"створення-queryrunner-з-datasource","Створення QueryRunner з DataSource",[5190,10019,10020,10022,10023,10026],{},[5136,10021,5116],{}," — це низькорівневий API TypeORM для ",[5136,10024,10025],{},"ручного контролю"," транзакцій, з'єднань та виконання SQL-запитів. Використовується для складних сценаріїв, де потрібен повний контроль.",[5190,10028,10029],{},[5136,10030,10031],{},"Створення QueryRunner:",[5204,10033,10035],{"className":5456,"code":10034,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\n",[5110,10036,10037],{"__ignoreMap":5208},[5212,10038,10039,10041,10044,10046,10049,10051,10053,10055,10058],{"class":5214,"line":5215},[5212,10040,7220],{"class":5349},[5212,10042,10043],{"class":5744}," queryRunner",[5212,10045,5762],{"class":5356},[5212,10047,10048],{"class":5349},"this",[5212,10050,5314],{"class":5356},[5212,10052,7707],{"class":5469},[5212,10054,5314],{"class":5356},[5212,10056,10057],{"class":5475},"createQueryRunner",[5212,10059,9460],{"class":5356},[5190,10061,10062],{},[5136,10063,10064],{},"QueryRunner надає:",[5092,10066,10067,10079,10085],{},[5095,10068,10069,10070,5888,10073,5888,10076,5314],{},"Ручне керування транзакцією: ",[5110,10071,10072],{},"startTransaction()",[5110,10074,10075],{},"commitTransaction()",[5110,10077,10078],{},"rollbackTransaction()",[5095,10080,10081,10082,5314],{},"Виконання сирих SQL-запитів: ",[5110,10083,10084],{},"query(sql, parameters)",[5095,10086,10087,10088,5314],{},"Доступ до EntityManager: ",[5110,10089,10090],{},"queryRunner.manager",[5185,10092,10094],{"id":10093},"ручний-контроль-транзакції","Ручний контроль транзакції",[5190,10096,10097],{},[5136,10098,10099],{},"Базовий шаблон з QueryRunner:",[5204,10101,10103],{"className":5456,"code":10102,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\n\n\u002F\u002F Встановити з'єднання з БД\nawait queryRunner.connect();\n\n\u002F\u002F Почати транзакцію\nawait queryRunner.startTransaction();\n\ntry {\n  \u002F\u002F Виконати операції через queryRunner.manager\n  await queryRunner.manager.save(User, { email: 'user@example.com' });\n  await queryRunner.manager.save(Profile, { userId: 1 });\n\n  \u002F\u002F Зафіксувати транзакцію\n  await queryRunner.commitTransaction();\n} catch (error) {\n  \u002F\u002F Відкотити транзакцію при помилці\n  await queryRunner.rollbackTransaction();\n  throw error;\n} finally {\n  \u002F\u002F Звільнити з'єднання назад у pool\n  await queryRunner.release();\n}\n",[5110,10104,10105,10125,10129,10134,10147,10151,10156,10169,10173,10179,10184,10210,10236,10240,10245,10258,10270,10275,10288,10298,10307,10312,10325],{"__ignoreMap":5208},[5212,10106,10107,10109,10111,10113,10115,10117,10119,10121,10123],{"class":5214,"line":5215},[5212,10108,7220],{"class":5349},[5212,10110,10043],{"class":5744},[5212,10112,5762],{"class":5356},[5212,10114,10048],{"class":5349},[5212,10116,5314],{"class":5356},[5212,10118,7707],{"class":5469},[5212,10120,5314],{"class":5356},[5212,10122,10057],{"class":5475},[5212,10124,9460],{"class":5356},[5212,10126,10127],{"class":5214,"line":5221},[5212,10128,5662],{"emptyLinePlaceholder":5661},[5212,10130,10131],{"class":5214,"line":5227},[5212,10132,10133],{"class":5547},"\u002F\u002F Встановити з'єднання з БД\n",[5212,10135,10136,10138,10140,10142,10145],{"class":5214,"line":5233},[5212,10137,5466],{"class":5465},[5212,10139,10043],{"class":5469},[5212,10141,5314],{"class":5356},[5212,10143,10144],{"class":5475},"connect",[5212,10146,9460],{"class":5356},[5212,10148,10149],{"class":5214,"line":5239},[5212,10150,5662],{"emptyLinePlaceholder":5661},[5212,10152,10153],{"class":5214,"line":5245},[5212,10154,10155],{"class":5547},"\u002F\u002F Почати транзакцію\n",[5212,10157,10158,10160,10162,10164,10167],{"class":5214,"line":5251},[5212,10159,5466],{"class":5465},[5212,10161,10043],{"class":5469},[5212,10163,5314],{"class":5356},[5212,10165,10166],{"class":5475},"startTransaction",[5212,10168,9460],{"class":5356},[5212,10170,10171],{"class":5214,"line":5257},[5212,10172,5662],{"emptyLinePlaceholder":5661},[5212,10174,10175,10177],{"class":5214,"line":5263},[5212,10176,7142],{"class":5465},[5212,10178,5497],{"class":5356},[5212,10180,10181],{"class":5214,"line":5269},[5212,10182,10183],{"class":5547},"  \u002F\u002F Виконати операції через queryRunner.manager\n",[5212,10185,10186,10188,10190,10192,10194,10196,10198,10200,10202,10204,10206,10208],{"class":5214,"line":5275},[5212,10187,5502],{"class":5465},[5212,10189,10043],{"class":5469},[5212,10191,5314],{"class":5356},[5212,10193,5488],{"class":5469},[5212,10195,5314],{"class":5356},[5212,10197,6006],{"class":5475},[5212,10199,5479],{"class":5356},[5212,10201,6402],{"class":5469},[5212,10203,5518],{"class":5356},[5212,10205,8075],{"class":5469},[5212,10207,6570],{"class":5384},[5212,10209,7018],{"class":5356},[5212,10211,10212,10214,10216,10218,10220,10222,10224,10226,10228,10230,10232,10234],{"class":5214,"line":5281},[5212,10213,5502],{"class":5465},[5212,10215,10043],{"class":5469},[5212,10217,5314],{"class":5356},[5212,10219,5488],{"class":5469},[5212,10221,5314],{"class":5356},[5212,10223,6006],{"class":5475},[5212,10225,5479],{"class":5356},[5212,10227,6629],{"class":5469},[5212,10229,5518],{"class":5356},[5212,10231,7012],{"class":5469},[5212,10233,6022],{"class":5374},[5212,10235,7018],{"class":5356},[5212,10237,10238],{"class":5214,"line":5287},[5212,10239,5662],{"emptyLinePlaceholder":5661},[5212,10241,10242],{"class":5214,"line":5293},[5212,10243,10244],{"class":5547},"  \u002F\u002F Зафіксувати транзакцію\n",[5212,10246,10247,10249,10251,10253,10256],{"class":5214,"line":6165},[5212,10248,5502],{"class":5465},[5212,10250,10043],{"class":5469},[5212,10252,5314],{"class":5356},[5212,10254,10255],{"class":5475},"commitTransaction",[5212,10257,9460],{"class":5356},[5212,10259,10260,10262,10264,10266,10268],{"class":5214,"line":6171},[5212,10261,7351],{"class":5356},[5212,10263,7354],{"class":5465},[5212,10265,5485],{"class":5356},[5212,10267,7359],{"class":5469},[5212,10269,6948],{"class":5356},[5212,10271,10272],{"class":5214,"line":6207},[5212,10273,10274],{"class":5547},"  \u002F\u002F Відкотити транзакцію при помилці\n",[5212,10276,10277,10279,10281,10283,10286],{"class":5214,"line":6239},[5212,10278,5502],{"class":5465},[5212,10280,10043],{"class":5469},[5212,10282,5314],{"class":5356},[5212,10284,10285],{"class":5475},"rollbackTransaction",[5212,10287,9460],{"class":5356},[5212,10289,10290,10293,10296],{"class":5214,"line":6244},[5212,10291,10292],{"class":5465},"  throw",[5212,10294,10295],{"class":5469}," error",[5212,10297,5357],{"class":5356},[5212,10299,10300,10302,10305],{"class":5214,"line":6250},[5212,10301,7351],{"class":5356},[5212,10303,10304],{"class":5465},"finally",[5212,10306,5497],{"class":5356},[5212,10308,10309],{"class":5214,"line":6738},[5212,10310,10311],{"class":5547},"  \u002F\u002F Звільнити з'єднання назад у pool\n",[5212,10313,10314,10316,10318,10320,10323],{"class":5214,"line":6743},[5212,10315,5502],{"class":5465},[5212,10317,10043],{"class":5469},[5212,10319,5314],{"class":5356},[5212,10321,10322],{"class":5475},"release",[5212,10324,9460],{"class":5356},[5212,10326,10327],{"class":5214,"line":6748},[5212,10328,7396],{"class":5356},[5185,10330,10332],{"id":10331},"queryrunnerstarttransaction",[5110,10333,10334],{},"queryRunner.startTransaction()",[5190,10336,10337,10338,5314],{},"Починає нову транзакцію. Виконує SQL-команду ",[5110,10339,10340],{},"BEGIN TRANSACTION",[5204,10342,10344],{"className":5456,"code":10343,"language":5458,"meta":5208,"style":5208},"await queryRunner.startTransaction();\n\u002F\u002F SQL: BEGIN TRANSACTION\n",[5110,10345,10346,10358],{"__ignoreMap":5208},[5212,10347,10348,10350,10352,10354,10356],{"class":5214,"line":5215},[5212,10349,5466],{"class":5465},[5212,10351,10043],{"class":5469},[5212,10353,5314],{"class":5356},[5212,10355,10166],{"class":5475},[5212,10357,9460],{"class":5356},[5212,10359,10360],{"class":5214,"line":5221},[5212,10361,10362],{"class":5547},"\u002F\u002F SQL: BEGIN TRANSACTION\n",[5190,10364,10365],{},[5136,10366,10367],{},"З рівнем ізоляції:",[5204,10369,10371],{"className":5456,"code":10370,"language":5458,"meta":5208,"style":5208},"await queryRunner.startTransaction('READ COMMITTED');\n\u002F\u002F SQL: BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED\n",[5110,10372,10373,10390],{"__ignoreMap":5208},[5212,10374,10375,10377,10379,10381,10383,10385,10388],{"class":5214,"line":5215},[5212,10376,5466],{"class":5465},[5212,10378,10043],{"class":5469},[5212,10380,5314],{"class":5356},[5212,10382,10166],{"class":5475},[5212,10384,5479],{"class":5356},[5212,10386,10387],{"class":5384},"'READ COMMITTED'",[5212,10389,5656],{"class":5356},[5212,10391,10392],{"class":5214,"line":5221},[5212,10393,10394],{"class":5547},"\u002F\u002F SQL: BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED\n",[5185,10396,10398],{"id":10397},"queryrunnercommittransaction",[5110,10399,10400],{},"queryRunner.commitTransaction()",[5190,10402,10403,10404,5314],{},"Фіксує всі зміни транзакції. Виконує SQL-команду ",[5110,10405,5414],{},[5204,10407,10409],{"className":5456,"code":10408,"language":5458,"meta":5208,"style":5208},"await queryRunner.commitTransaction();\n\u002F\u002F SQL: COMMIT\n",[5110,10410,10411,10423],{"__ignoreMap":5208},[5212,10412,10413,10415,10417,10419,10421],{"class":5214,"line":5215},[5212,10414,5466],{"class":5465},[5212,10416,10043],{"class":5469},[5212,10418,5314],{"class":5356},[5212,10420,10255],{"class":5475},[5212,10422,9460],{"class":5356},[5212,10424,10425],{"class":5214,"line":5221},[5212,10426,10427],{"class":5547},"\u002F\u002F SQL: COMMIT\n",[5190,10429,10430],{},[5136,10431,10432],{},"Після commit:",[5092,10434,10435,10438,10441],{},[5095,10436,10437],{},"Всі зміни застосовуються до БД назавжди.",[5095,10439,10440],{},"Блокування, встановлені транзакцією, звільняються.",[5095,10442,10443],{},"Транзакція вважається завершеною.",[5185,10445,10447],{"id":10446},"queryrunnerrollbacktransaction",[5110,10448,10449],{},"queryRunner.rollbackTransaction()",[5190,10451,10452,10453,5314],{},"Скасовує всі зміни транзакції. Виконує SQL-команду ",[5110,10454,5422],{},[5204,10456,10458],{"className":5456,"code":10457,"language":5458,"meta":5208,"style":5208},"await queryRunner.rollbackTransaction();\n\u002F\u002F SQL: ROLLBACK\n",[5110,10459,10460,10472],{"__ignoreMap":5208},[5212,10461,10462,10464,10466,10468,10470],{"class":5214,"line":5215},[5212,10463,5466],{"class":5465},[5212,10465,10043],{"class":5469},[5212,10467,5314],{"class":5356},[5212,10469,10285],{"class":5475},[5212,10471,9460],{"class":5356},[5212,10473,10474],{"class":5214,"line":5221},[5212,10475,10476],{"class":5547},"\u002F\u002F SQL: ROLLBACK\n",[5190,10478,10479],{},[5136,10480,10481],{},"Після rollback:",[5092,10483,10484,10487,10490],{},[5095,10485,10486],{},"БД повертається до стану до початку транзакції.",[5095,10488,10489],{},"Блокування звільняються.",[5095,10491,10443],{},[5185,10493,10495,10498],{"id":10494},"queryrunnerrelease-завжди-у-finally-блоці",[5110,10496,10497],{},"queryRunner.release()",": завжди у finally блоці",[5190,10500,10501,10503,10504,10506,10507,10509],{},[5136,10502,8227],{}," Завжди викликайте ",[5110,10505,10497],{}," у блоці ",[5110,10508,10304],{},", щоб звільнити з'єднання назад у connection pool.",[5190,10511,10512],{},[5136,10513,10514],{},"❌ Небезпечно (витік з'єднань):",[5204,10516,10518],{"className":5456,"code":10517,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\nawait queryRunner.connect();\nawait queryRunner.startTransaction();\n\nawait queryRunner.manager.save(User, { email: 'user@example.com' });\nawait queryRunner.commitTransaction();\n\n\u002F\u002F ❌ Забули викликати release() — з'єднання залишається зайнятим!\n",[5110,10519,10520,10540,10552,10564,10568,10594,10606,10610],{"__ignoreMap":5208},[5212,10521,10522,10524,10526,10528,10530,10532,10534,10536,10538],{"class":5214,"line":5215},[5212,10523,7220],{"class":5349},[5212,10525,10043],{"class":5744},[5212,10527,5762],{"class":5356},[5212,10529,10048],{"class":5349},[5212,10531,5314],{"class":5356},[5212,10533,7707],{"class":5469},[5212,10535,5314],{"class":5356},[5212,10537,10057],{"class":5475},[5212,10539,9460],{"class":5356},[5212,10541,10542,10544,10546,10548,10550],{"class":5214,"line":5221},[5212,10543,5466],{"class":5465},[5212,10545,10043],{"class":5469},[5212,10547,5314],{"class":5356},[5212,10549,10144],{"class":5475},[5212,10551,9460],{"class":5356},[5212,10553,10554,10556,10558,10560,10562],{"class":5214,"line":5227},[5212,10555,5466],{"class":5465},[5212,10557,10043],{"class":5469},[5212,10559,5314],{"class":5356},[5212,10561,10166],{"class":5475},[5212,10563,9460],{"class":5356},[5212,10565,10566],{"class":5214,"line":5233},[5212,10567,5662],{"emptyLinePlaceholder":5661},[5212,10569,10570,10572,10574,10576,10578,10580,10582,10584,10586,10588,10590,10592],{"class":5214,"line":5239},[5212,10571,5466],{"class":5465},[5212,10573,10043],{"class":5469},[5212,10575,5314],{"class":5356},[5212,10577,5488],{"class":5469},[5212,10579,5314],{"class":5356},[5212,10581,6006],{"class":5475},[5212,10583,5479],{"class":5356},[5212,10585,6402],{"class":5469},[5212,10587,5518],{"class":5356},[5212,10589,8075],{"class":5469},[5212,10591,6570],{"class":5384},[5212,10593,7018],{"class":5356},[5212,10595,10596,10598,10600,10602,10604],{"class":5214,"line":5245},[5212,10597,5466],{"class":5465},[5212,10599,10043],{"class":5469},[5212,10601,5314],{"class":5356},[5212,10603,10255],{"class":5475},[5212,10605,9460],{"class":5356},[5212,10607,10608],{"class":5214,"line":5251},[5212,10609,5662],{"emptyLinePlaceholder":5661},[5212,10611,10612],{"class":5214,"line":5257},[5212,10613,10614],{"class":5547},"\u002F\u002F ❌ Забули викликати release() — з'єднання залишається зайнятим!\n",[5190,10616,10617],{},[5136,10618,10619],{},"✅ Правильно:",[5204,10621,10623],{"className":5456,"code":10622,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\nawait queryRunner.connect();\nawait queryRunner.startTransaction();\n\ntry {\n  await queryRunner.manager.save(User, { email: 'user@example.com' });\n  await queryRunner.commitTransaction();\n} catch (error) {\n  await queryRunner.rollbackTransaction();\n  throw error;\n} finally {\n  await queryRunner.release(); \u002F\u002F ✅ Завжди звільняти з'єднання\n}\n",[5110,10624,10625,10645,10657,10669,10673,10679,10705,10717,10729,10741,10749,10757,10773],{"__ignoreMap":5208},[5212,10626,10627,10629,10631,10633,10635,10637,10639,10641,10643],{"class":5214,"line":5215},[5212,10628,7220],{"class":5349},[5212,10630,10043],{"class":5744},[5212,10632,5762],{"class":5356},[5212,10634,10048],{"class":5349},[5212,10636,5314],{"class":5356},[5212,10638,7707],{"class":5469},[5212,10640,5314],{"class":5356},[5212,10642,10057],{"class":5475},[5212,10644,9460],{"class":5356},[5212,10646,10647,10649,10651,10653,10655],{"class":5214,"line":5221},[5212,10648,5466],{"class":5465},[5212,10650,10043],{"class":5469},[5212,10652,5314],{"class":5356},[5212,10654,10144],{"class":5475},[5212,10656,9460],{"class":5356},[5212,10658,10659,10661,10663,10665,10667],{"class":5214,"line":5227},[5212,10660,5466],{"class":5465},[5212,10662,10043],{"class":5469},[5212,10664,5314],{"class":5356},[5212,10666,10166],{"class":5475},[5212,10668,9460],{"class":5356},[5212,10670,10671],{"class":5214,"line":5233},[5212,10672,5662],{"emptyLinePlaceholder":5661},[5212,10674,10675,10677],{"class":5214,"line":5239},[5212,10676,7142],{"class":5465},[5212,10678,5497],{"class":5356},[5212,10680,10681,10683,10685,10687,10689,10691,10693,10695,10697,10699,10701,10703],{"class":5214,"line":5245},[5212,10682,5502],{"class":5465},[5212,10684,10043],{"class":5469},[5212,10686,5314],{"class":5356},[5212,10688,5488],{"class":5469},[5212,10690,5314],{"class":5356},[5212,10692,6006],{"class":5475},[5212,10694,5479],{"class":5356},[5212,10696,6402],{"class":5469},[5212,10698,5518],{"class":5356},[5212,10700,8075],{"class":5469},[5212,10702,6570],{"class":5384},[5212,10704,7018],{"class":5356},[5212,10706,10707,10709,10711,10713,10715],{"class":5214,"line":5251},[5212,10708,5502],{"class":5465},[5212,10710,10043],{"class":5469},[5212,10712,5314],{"class":5356},[5212,10714,10255],{"class":5475},[5212,10716,9460],{"class":5356},[5212,10718,10719,10721,10723,10725,10727],{"class":5214,"line":5257},[5212,10720,7351],{"class":5356},[5212,10722,7354],{"class":5465},[5212,10724,5485],{"class":5356},[5212,10726,7359],{"class":5469},[5212,10728,6948],{"class":5356},[5212,10730,10731,10733,10735,10737,10739],{"class":5214,"line":5263},[5212,10732,5502],{"class":5465},[5212,10734,10043],{"class":5469},[5212,10736,5314],{"class":5356},[5212,10738,10285],{"class":5475},[5212,10740,9460],{"class":5356},[5212,10742,10743,10745,10747],{"class":5214,"line":5269},[5212,10744,10292],{"class":5465},[5212,10746,10295],{"class":5469},[5212,10748,5357],{"class":5356},[5212,10750,10751,10753,10755],{"class":5214,"line":5275},[5212,10752,7351],{"class":5356},[5212,10754,10304],{"class":5465},[5212,10756,5497],{"class":5356},[5212,10758,10759,10761,10763,10765,10767,10770],{"class":5214,"line":5281},[5212,10760,5502],{"class":5465},[5212,10762,10043],{"class":5469},[5212,10764,5314],{"class":5356},[5212,10766,10322],{"class":5475},[5212,10768,10769],{"class":5356},"(); ",[5212,10771,10772],{"class":5547},"\u002F\u002F ✅ Завжди звільняти з'єднання\n",[5212,10774,10775],{"class":5214,"line":5287},[5212,10776,7396],{"class":5356},[10778,10779,10780,10785,10792,10797],"caution",{},[5190,10781,10782],{},[5136,10783,10784],{},"Наслідки не звільнення QueryRunner:",[5190,10786,10787,10788,10791],{},"Якщо не викликати ",[5110,10789,10790],{},"release()",", з'єднання з БД залишається зайнятим і не повертається у connection pool. При великій кількості запитів це призведе до вичерпання пулу з'єднань → нові запити не зможуть виконатися → застосунок зависне.",[5190,10793,10794],{},[5136,10795,10796],{},"Симптоми:",[5092,10798,10799,10804,10807],{},[5095,10800,10801,5314],{},[5110,10802,10803],{},"TimeoutError: ResourceRequest timed out",[5095,10805,10806],{},"Повільна відповідь API.",[5095,10808,10809],{},"Неможливість підключитися до БД.",[5190,10811,10812],{},[5136,10813,10814],{},"Приклад складної транзакції з QueryRunner:",[5204,10816,10818],{"className":5456,"code":10817,"language":5458,"meta":5208,"style":5208},"async createOrderWithInventoryUpdate(orderData: CreateOrderDto): Promise\u003COrder> {\n  const queryRunner = this.dataSource.createQueryRunner();\n  await queryRunner.connect();\n  await queryRunner.startTransaction();\n\n  try {\n    \u002F\u002F 1. Створити замовлення\n    const order = await queryRunner.manager.save(Order, {\n      userId: orderData.userId,\n      totalAmount: 0,\n      status: 'pending',\n    });\n\n    let totalAmount = 0;\n\n    \u002F\u002F 2. Додати позиції замовлення та оновити склад\n    for (const item of orderData.items) {\n      \u002F\u002F Перевірити наявність товару на складі з блокуванням\n      const product = await queryRunner.manager.findOne(Product, {\n        where: { id: item.productId },\n        lock: { mode: 'pessimistic_write' },\n      });\n\n      if (!product || product.stock \u003C item.quantity) {\n        throw new Error(`Product ${item.productId} is out of stock`);\n      }\n\n      \u002F\u002F Додати позицію замовлення\n      await queryRunner.manager.save(OrderItem, {\n        orderId: order.id,\n        productId: item.productId,\n        quantity: item.quantity,\n        price: product.price,\n      });\n\n      \u002F\u002F Оновити склад\n      await queryRunner.manager.decrement(\n        Product,\n        { id: item.productId },\n        'stock',\n        item.quantity\n      );\n\n      totalAmount += product.price * item.quantity;\n    }\n\n    \u002F\u002F 3. Оновити загальну суму замовлення\n    await queryRunner.manager.update(Order, { id: order.id }, { totalAmount });\n\n    \u002F\u002F 4. Зафіксувати транзакцію\n    await queryRunner.commitTransaction();\n\n    return order;\n  } catch (error) {\n    await queryRunner.rollbackTransaction();\n    throw error;\n  } finally {\n    await queryRunner.release();\n  }\n}\n",[5110,10819,10820,10847,10869,10874,10879,10883,10888,10893,10919,10933,10943,10952,10956,10960,10974,10978,10983,11005,11010,11037,11055,11068,11072,11076,11108,11136,11140,11144,11149,11169,11182,11195,11208,11222,11226,11230,11236,11253,11261,11277,11285,11296,11302,11307,11332,11337,11342,11348,11384,11389,11395,11408,11413,11422,11428,11438,11444,11454,11467,11472],{"__ignoreMap":5208},[5212,10821,10822,10824,10827,10829,10832,10834,10837,10839,10841,10843,10845],{"class":5214,"line":5215},[5212,10823,5482],{"class":5469},[5212,10825,10826],{"class":5475}," createOrderWithInventoryUpdate",[5212,10828,5479],{"class":5356},[5212,10830,10831],{"class":5469},"orderData",[5212,10833,7447],{"class":5356},[5212,10835,10836],{"class":5469},"CreateOrderDto",[5212,10838,7683],{"class":5356},[5212,10840,7686],{"class":7450},[5212,10842,7689],{"class":5356},[5212,10844,6011],{"class":5469},[5212,10846,7694],{"class":5356},[5212,10848,10849,10852,10855,10857,10859,10861,10863,10865,10867],{"class":5214,"line":5221},[5212,10850,10851],{"class":5356},"  const ",[5212,10853,10854],{"class":5469},"queryRunner",[5212,10856,5762],{"class":5356},[5212,10858,10048],{"class":5349},[5212,10860,5314],{"class":5356},[5212,10862,7707],{"class":5469},[5212,10864,5314],{"class":5356},[5212,10866,10057],{"class":5475},[5212,10868,9460],{"class":5356},[5212,10870,10871],{"class":5214,"line":5227},[5212,10872,10873],{"class":5356},"  await queryRunner.connect();\n",[5212,10875,10876],{"class":5214,"line":5233},[5212,10877,10878],{"class":5356},"  await queryRunner.startTransaction();\n",[5212,10880,10881],{"class":5214,"line":5239},[5212,10882,5662],{"emptyLinePlaceholder":5661},[5212,10884,10885],{"class":5214,"line":5245},[5212,10886,10887],{"class":5356},"  try {\n",[5212,10889,10890],{"class":5214,"line":5251},[5212,10891,10892],{"class":5547},"    \u002F\u002F 1. Створити замовлення\n",[5212,10894,10895,10897,10899,10901,10903,10905,10907,10909,10911,10913,10915,10917],{"class":5214,"line":5257},[5212,10896,7173],{"class":5349},[5212,10898,5995],{"class":5744},[5212,10900,5762],{"class":5356},[5212,10902,5466],{"class":5465},[5212,10904,10043],{"class":5469},[5212,10906,5314],{"class":5356},[5212,10908,5488],{"class":5469},[5212,10910,5314],{"class":5356},[5212,10912,6006],{"class":5475},[5212,10914,5479],{"class":5356},[5212,10916,6011],{"class":5469},[5212,10918,6014],{"class":5356},[5212,10920,10921,10924,10927,10929,10931],{"class":5214,"line":5263},[5212,10922,10923],{"class":5469},"      userId:",[5212,10925,10926],{"class":5469}," orderData",[5212,10928,5314],{"class":5356},[5212,10930,8774],{"class":5469},[5212,10932,6025],{"class":5356},[5212,10934,10935,10938,10941],{"class":5214,"line":5269},[5212,10936,10937],{"class":5469},"      totalAmount:",[5212,10939,10940],{"class":5374}," 0",[5212,10942,6025],{"class":5356},[5212,10944,10945,10948,10950],{"class":5214,"line":5275},[5212,10946,10947],{"class":5469},"      status:",[5212,10949,6043],{"class":5384},[5212,10951,6025],{"class":5356},[5212,10953,10954],{"class":5214,"line":5281},[5212,10955,7911],{"class":5356},[5212,10957,10958],{"class":5214,"line":5287},[5212,10959,5662],{"emptyLinePlaceholder":5661},[5212,10961,10962,10965,10968,10970,10972],{"class":5214,"line":5293},[5212,10963,10964],{"class":5349},"    let",[5212,10966,10967],{"class":5469}," totalAmount",[5212,10969,5762],{"class":5356},[5212,10971,5653],{"class":5374},[5212,10973,5357],{"class":5356},[5212,10975,10976],{"class":5214,"line":6165},[5212,10977,5662],{"emptyLinePlaceholder":5661},[5212,10979,10980],{"class":5214,"line":6171},[5212,10981,10982],{"class":5547},"    \u002F\u002F 2. Додати позиції замовлення та оновити склад\n",[5212,10984,10985,10987,10989,10991,10994,10996,10998,11000,11003],{"class":5214,"line":6207},[5212,10986,7215],{"class":5465},[5212,10988,5485],{"class":5356},[5212,10990,7220],{"class":5349},[5212,10992,10993],{"class":5744}," item",[5212,10995,7225],{"class":5349},[5212,10997,10926],{"class":5469},[5212,10999,5314],{"class":5356},[5212,11001,11002],{"class":5469},"items",[5212,11004,6948],{"class":5356},[5212,11006,11007],{"class":5214,"line":6239},[5212,11008,11009],{"class":5547},"      \u002F\u002F Перевірити наявність товару на складі з блокуванням\n",[5212,11011,11012,11014,11017,11019,11021,11023,11025,11027,11029,11031,11033,11035],{"class":5214,"line":6244},[5212,11013,7735],{"class":5349},[5212,11015,11016],{"class":5744}," product",[5212,11018,5762],{"class":5356},[5212,11020,5466],{"class":5465},[5212,11022,10043],{"class":5469},[5212,11024,5314],{"class":5356},[5212,11026,5488],{"class":5469},[5212,11028,5314],{"class":5356},[5212,11030,6878],{"class":5475},[5212,11032,5479],{"class":5356},[5212,11034,6185],{"class":5469},[5212,11036,6014],{"class":5356},[5212,11038,11039,11042,11044,11046,11048,11050,11053],{"class":5214,"line":6250},[5212,11040,11041],{"class":5469},"        where:",[5212,11043,6893],{"class":5356},[5212,11045,5521],{"class":5469},[5212,11047,10993],{"class":5469},[5212,11049,5314],{"class":5356},[5212,11051,11052],{"class":5469},"productId",[5212,11054,6119],{"class":5356},[5212,11056,11057,11060,11062,11064,11066],{"class":5214,"line":6738},[5212,11058,11059],{"class":5469},"        lock:",[5212,11061,6893],{"class":5356},[5212,11063,6918],{"class":5469},[5212,11065,6921],{"class":5384},[5212,11067,6119],{"class":5356},[5212,11069,11070],{"class":5214,"line":6743},[5212,11071,7785],{"class":5356},[5212,11073,11074],{"class":5214,"line":6748},[5212,11075,5662],{"emptyLinePlaceholder":5661},[5212,11077,11078,11080,11082,11085,11088,11090,11092,11095,11098,11101,11103,11106],{"class":5214,"line":6754},[5212,11079,7239],{"class":5465},[5212,11081,6942],{"class":5356},[5212,11083,11084],{"class":5469},"product",[5212,11086,11087],{"class":5356}," || ",[5212,11089,11084],{"class":5469},[5212,11091,5314],{"class":5356},[5212,11093,11094],{"class":5469},"stock",[5212,11096,11097],{"class":5356}," \u003C ",[5212,11099,11100],{"class":5469},"item",[5212,11102,5314],{"class":5356},[5212,11104,11105],{"class":5469},"quantity",[5212,11107,6948],{"class":5356},[5212,11109,11110,11112,11114,11116,11118,11121,11123,11125,11127,11129,11131,11134],{"class":5214,"line":6772},[5212,11111,7262],{"class":5465},[5212,11113,6956],{"class":5349},[5212,11115,6959],{"class":5475},[5212,11117,5479],{"class":5356},[5212,11119,11120],{"class":5384},"`Product ",[5212,11122,7274],{"class":5349},[5212,11124,11100],{"class":5469},[5212,11126,5314],{"class":7279},[5212,11128,11052],{"class":5469},[5212,11130,7284],{"class":5349},[5212,11132,11133],{"class":5384}," is out of stock`",[5212,11135,5656],{"class":5356},[5212,11137,11138],{"class":5214,"line":6785},[5212,11139,7294],{"class":5356},[5212,11141,11142],{"class":5214,"line":6799},[5212,11143,5662],{"emptyLinePlaceholder":5661},[5212,11145,11146],{"class":5214,"line":6804},[5212,11147,11148],{"class":5547},"      \u002F\u002F Додати позицію замовлення\n",[5212,11150,11151,11153,11155,11157,11159,11161,11163,11165,11167],{"class":5214,"line":7914},[5212,11152,7308],{"class":5465},[5212,11154,10043],{"class":5469},[5212,11156,5314],{"class":5356},[5212,11158,5488],{"class":5469},[5212,11160,5314],{"class":5356},[5212,11162,6006],{"class":5475},[5212,11164,5479],{"class":5356},[5212,11166,6074],{"class":5469},[5212,11168,6014],{"class":5356},[5212,11170,11171,11174,11176,11178,11180],{"class":5214,"line":7919},[5212,11172,11173],{"class":5469},"        orderId:",[5212,11175,5995],{"class":5469},[5212,11177,5314],{"class":5356},[5212,11179,6092],{"class":5469},[5212,11181,6025],{"class":5356},[5212,11183,11184,11187,11189,11191,11193],{"class":5214,"line":8719},[5212,11185,11186],{"class":5469},"        productId:",[5212,11188,10993],{"class":5469},[5212,11190,5314],{"class":5356},[5212,11192,11052],{"class":5469},[5212,11194,6025],{"class":5356},[5212,11196,11197,11200,11202,11204,11206],{"class":5214,"line":8727},[5212,11198,11199],{"class":5469},"        quantity:",[5212,11201,10993],{"class":5469},[5212,11203,5314],{"class":5356},[5212,11205,11105],{"class":5469},[5212,11207,6025],{"class":5356},[5212,11209,11210,11213,11215,11217,11220],{"class":5214,"line":8740},[5212,11211,11212],{"class":5469},"        price:",[5212,11214,11016],{"class":5469},[5212,11216,5314],{"class":5356},[5212,11218,11219],{"class":5469},"price",[5212,11221,6025],{"class":5356},[5212,11223,11224],{"class":5214,"line":8745},[5212,11225,7785],{"class":5356},[5212,11227,11228],{"class":5214,"line":8750},[5212,11229,5662],{"emptyLinePlaceholder":5661},[5212,11231,11233],{"class":5214,"line":11232},36,[5212,11234,11235],{"class":5547},"      \u002F\u002F Оновити склад\n",[5212,11237,11239,11241,11243,11245,11247,11249,11251],{"class":5214,"line":11238},37,[5212,11240,7308],{"class":5465},[5212,11242,10043],{"class":5469},[5212,11244,5314],{"class":5356},[5212,11246,5488],{"class":5469},[5212,11248,5314],{"class":5356},[5212,11250,6180],{"class":5475},[5212,11252,8520],{"class":5356},[5212,11254,11256,11259],{"class":5214,"line":11255},38,[5212,11257,11258],{"class":5469},"        Product",[5212,11260,6025],{"class":5356},[5212,11262,11264,11267,11269,11271,11273,11275],{"class":5214,"line":11263},39,[5212,11265,11266],{"class":5356},"        { ",[5212,11268,5521],{"class":5469},[5212,11270,10993],{"class":5469},[5212,11272,5314],{"class":5356},[5212,11274,11052],{"class":5469},[5212,11276,6119],{"class":5356},[5212,11278,11280,11283],{"class":5214,"line":11279},40,[5212,11281,11282],{"class":5384},"        'stock'",[5212,11284,6025],{"class":5356},[5212,11286,11288,11291,11293],{"class":5214,"line":11287},41,[5212,11289,11290],{"class":5469},"        item",[5212,11292,5314],{"class":5356},[5212,11294,11295],{"class":5469},"quantity\n",[5212,11297,11299],{"class":5214,"line":11298},42,[5212,11300,11301],{"class":5356},"      );\n",[5212,11303,11305],{"class":5214,"line":11304},43,[5212,11306,5662],{"emptyLinePlaceholder":5661},[5212,11308,11310,11313,11316,11318,11320,11322,11324,11326,11328,11330],{"class":5214,"line":11309},44,[5212,11311,11312],{"class":5469},"      totalAmount",[5212,11314,11315],{"class":5356}," += ",[5212,11317,11084],{"class":5469},[5212,11319,5314],{"class":5356},[5212,11321,11219],{"class":5469},[5212,11323,7090],{"class":5356},[5212,11325,11100],{"class":5469},[5212,11327,5314],{"class":5356},[5212,11329,11105],{"class":5469},[5212,11331,5357],{"class":5356},[5212,11333,11335],{"class":5214,"line":11334},45,[5212,11336,7342],{"class":5356},[5212,11338,11340],{"class":5214,"line":11339},46,[5212,11341,5662],{"emptyLinePlaceholder":5661},[5212,11343,11345],{"class":5214,"line":11344},47,[5212,11346,11347],{"class":5547},"    \u002F\u002F 3. Оновити загальну суму замовлення\n",[5212,11349,11351,11353,11355,11357,11359,11361,11363,11365,11367,11369,11371,11373,11375,11377,11379,11382],{"class":5214,"line":11350},48,[5212,11352,8060],{"class":5465},[5212,11354,10043],{"class":5469},[5212,11356,5314],{"class":5356},[5212,11358,5488],{"class":5469},[5212,11360,5314],{"class":5356},[5212,11362,5510],{"class":5475},[5212,11364,5479],{"class":5356},[5212,11366,6011],{"class":5469},[5212,11368,5518],{"class":5356},[5212,11370,5521],{"class":5469},[5212,11372,5995],{"class":5469},[5212,11374,5314],{"class":5356},[5212,11376,6092],{"class":5469},[5212,11378,5527],{"class":5356},[5212,11380,11381],{"class":5469},"totalAmount",[5212,11383,7018],{"class":5356},[5212,11385,11387],{"class":5214,"line":11386},49,[5212,11388,5662],{"emptyLinePlaceholder":5661},[5212,11390,11392],{"class":5214,"line":11391},50,[5212,11393,11394],{"class":5547},"    \u002F\u002F 4. Зафіксувати транзакцію\n",[5212,11396,11398,11400,11402,11404,11406],{"class":5214,"line":11397},51,[5212,11399,8060],{"class":5465},[5212,11401,10043],{"class":5469},[5212,11403,5314],{"class":5356},[5212,11405,10255],{"class":5475},[5212,11407,9460],{"class":5356},[5212,11409,11411],{"class":5214,"line":11410},52,[5212,11412,5662],{"emptyLinePlaceholder":5661},[5212,11414,11416,11418,11420],{"class":5214,"line":11415},53,[5212,11417,7699],{"class":5465},[5212,11419,5995],{"class":5469},[5212,11421,5357],{"class":5356},[5212,11423,11425],{"class":5214,"line":11424},54,[5212,11426,11427],{"class":5356},"  } catch (error) {\n",[5212,11429,11431,11434,11436],{"class":5214,"line":11430},55,[5212,11432,11433],{"class":5356},"    await queryRunner.",[5212,11435,10285],{"class":5475},[5212,11437,9460],{"class":5356},[5212,11439,11441],{"class":5214,"line":11440},56,[5212,11442,11443],{"class":5356},"    throw error;\n",[5212,11445,11447,11450,11452],{"class":5214,"line":11446},57,[5212,11448,11449],{"class":5356},"  } ",[5212,11451,10304],{"class":5465},[5212,11453,5497],{"class":5356},[5212,11455,11457,11459,11461,11463,11465],{"class":5214,"line":11456},58,[5212,11458,8060],{"class":5465},[5212,11460,10043],{"class":5469},[5212,11462,5314],{"class":5356},[5212,11464,10322],{"class":5475},[5212,11466,9460],{"class":5356},[5212,11468,11470],{"class":5214,"line":11469},59,[5212,11471,6971],{"class":5356},[5212,11473,11475],{"class":5214,"line":11474},60,[5212,11476,7396],{"class":5356},[5177,11478],{},[5180,11480,11482],{"id":11481},"рівні-ізоляції-транзакцій","Рівні ізоляції транзакцій",[5185,11484,11486],{"id":11485},"концепція-рівнів-ізоляції","Концепція рівнів ізоляції",[5190,11488,11489,11492,11493,11496,11497,11500,11501,5314],{},[5136,11490,11491],{},"Рівень ізоляції"," визначає, ",[5136,11494,11495],{},"наскільки"," зміни однієї транзакції видимі іншим конкурентним транзакціям. Різні рівні ізоляції забезпечують різний баланс між ",[5136,11498,11499],{},"консистентністю даних"," та ",[5136,11502,11503],{},"продуктивністю",[5201,11505,11506],{},[5204,11507,11509],{"className":5206,"code":11508,"language":5201,"meta":5208,"style":5208},"flowchart LR\n    A[READ\u003Cbr\u002F>UNCOMMITTED] -->|більше| B[READ\u003Cbr\u002F>COMMITTED]\n    B -->|більше| C[REPEATABLE\u003Cbr\u002F>READ]\n    C -->|максимум| D[SERIALIZABLE]\n    \n    A1[Низька\u003Cbr\u002F>ізоляція] -.-> A\n    D1[Висока\u003Cbr\u002F>ізоляція] -.-> D\n    \n    P1[Висока\u003Cbr\u002F>продуктивність] -.-> A\n    P2[Нижча\u003Cbr\u002F>продуктивність] -.-> D\n    \n    style A fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n    style B fill:#FEF3C7,stroke:#b45309,color:#1e293b\n    style C fill:#DBEAFE,stroke:#1d4ed8,color:#1e293b\n    style D fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n",[5110,11510,11511,11516,11521,11526,11531,11535,11540,11545,11549,11554,11559,11563,11568,11573,11578],{"__ignoreMap":5208},[5212,11512,11513],{"class":5214,"line":5215},[5212,11514,11515],{},"flowchart LR\n",[5212,11517,11518],{"class":5214,"line":5221},[5212,11519,11520],{},"    A[READ\u003Cbr\u002F>UNCOMMITTED] -->|більше| B[READ\u003Cbr\u002F>COMMITTED]\n",[5212,11522,11523],{"class":5214,"line":5227},[5212,11524,11525],{},"    B -->|більше| C[REPEATABLE\u003Cbr\u002F>READ]\n",[5212,11527,11528],{"class":5214,"line":5233},[5212,11529,11530],{},"    C -->|максимум| D[SERIALIZABLE]\n",[5212,11532,11533],{"class":5214,"line":5239},[5212,11534,5266],{},[5212,11536,11537],{"class":5214,"line":5245},[5212,11538,11539],{},"    A1[Низька\u003Cbr\u002F>ізоляція] -.-> A\n",[5212,11541,11542],{"class":5214,"line":5251},[5212,11543,11544],{},"    D1[Висока\u003Cbr\u002F>ізоляція] -.-> D\n",[5212,11546,11547],{"class":5214,"line":5257},[5212,11548,5266],{},[5212,11550,11551],{"class":5214,"line":5263},[5212,11552,11553],{},"    P1[Висока\u003Cbr\u002F>продуктивність] -.-> A\n",[5212,11555,11556],{"class":5214,"line":5269},[5212,11557,11558],{},"    P2[Нижча\u003Cbr\u002F>продуктивність] -.-> D\n",[5212,11560,11561],{"class":5214,"line":5275},[5212,11562,5266],{},[5212,11564,11565],{"class":5214,"line":5281},[5212,11566,11567],{},"    style A fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n",[5212,11569,11570],{"class":5214,"line":5287},[5212,11571,11572],{},"    style B fill:#FEF3C7,stroke:#b45309,color:#1e293b\n",[5212,11574,11575],{"class":5214,"line":5293},[5212,11576,11577],{},"    style C fill:#DBEAFE,stroke:#1d4ed8,color:#1e293b\n",[5212,11579,11580],{"class":5214,"line":6165},[5212,11581,11582],{},"    style D fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n",[5185,11584,11586],{"id":11585},"read-uncommitted","READ UNCOMMITTED",[5190,11588,11589,11592,11593,11596,11597,5841],{},[5136,11590,11591],{},"Найнижчий рівень ізоляції."," Транзакція може читати ",[5136,11594,11595],{},"незафіксовані зміни"," інших транзакцій (",[5099,11598,11599],{},"dirty reads",[5190,11601,11602],{},[5136,11603,11604],{},"Приклад проблеми:",[5204,11606,11608],{"className":5456,"code":11607,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1: Оновлює баланс (не завершена)\nBEGIN;\nUPDATE accounts SET balance = balance - 100 WHERE id = 1;\n-- (не commit)\n\n\u002F\u002F Транзакція 2: Читає незафіксоване значення\nSELECT balance FROM accounts WHERE id = 1;\n-- Побачить balance - 100, навіть якщо транзакція 1 ще не завершена!\n\n\u002F\u002F Транзакція 1: Відкочує зміни\nROLLBACK;\n\n\u002F\u002F Транзакція 2 прочитала \"брудні\" дані, яких насправді немає!\n",[5110,11609,11610,11615,11621,11649,11660,11664,11669,11689,11727,11731,11736,11742,11746],{"__ignoreMap":5208},[5212,11611,11612],{"class":5214,"line":5215},[5212,11613,11614],{"class":5547},"\u002F\u002F Транзакція 1: Оновлює баланс (не завершена)\n",[5212,11616,11617,11619],{"class":5214,"line":5221},[5212,11618,5350],{"class":5744},[5212,11620,5357],{"class":5356},[5212,11622,11623,11625,11627,11629,11631,11633,11635,11637,11639,11641,11643,11645,11647],{"class":5214,"line":5227},[5212,11624,5362],{"class":5744},[5212,11626,5753],{"class":5469},[5212,11628,5756],{"class":5744},[5212,11630,5759],{"class":5469},[5212,11632,5762],{"class":5356},[5212,11634,5530],{"class":5469},[5212,11636,5767],{"class":5356},[5212,11638,5375],{"class":5374},[5212,11640,5378],{"class":5744},[5212,11642,5774],{"class":5469},[5212,11644,5762],{"class":5356},[5212,11646,6234],{"class":5374},[5212,11648,5357],{"class":5356},[5212,11650,11651,11653,11655,11658],{"class":5214,"line":5233},[5212,11652,5788],{"class":5356},[5212,11654,5791],{"class":5469},[5212,11656,11657],{"class":5469}," commit",[5212,11659,5797],{"class":5356},[5212,11661,11662],{"class":5214,"line":5239},[5212,11663,5662],{"emptyLinePlaceholder":5661},[5212,11665,11666],{"class":5214,"line":5245},[5212,11667,11668],{"class":5547},"\u002F\u002F Транзакція 2: Читає незафіксоване значення\n",[5212,11670,11671,11673,11675,11677,11679,11681,11683,11685,11687],{"class":5214,"line":5251},[5212,11672,5811],{"class":5744},[5212,11674,5759],{"class":5469},[5212,11676,5816],{"class":5744},[5212,11678,5753],{"class":5469},[5212,11680,5378],{"class":5744},[5212,11682,5774],{"class":5469},[5212,11684,5762],{"class":5356},[5212,11686,6234],{"class":5374},[5212,11688,5357],{"class":5356},[5212,11690,11691,11694,11697,11699,11701,11703,11705,11708,11711,11714,11716,11719,11722,11724],{"class":5214,"line":5257},[5212,11692,11693],{"class":5356},"-- ",[5212,11695,11696],{"class":5469},"Побачить",[5212,11698,5759],{"class":5469},[5212,11700,5767],{"class":5356},[5212,11702,5375],{"class":5374},[5212,11704,5888],{"class":5356},[5212,11706,11707],{"class":5469},"навіть",[5212,11709,11710],{"class":5469}," якщо",[5212,11712,11713],{"class":5469}," транзакція",[5212,11715,6022],{"class":5374},[5212,11717,11718],{"class":5469}," ще",[5212,11720,11721],{"class":5469}," не",[5212,11723,5794],{"class":5469},[5212,11725,11726],{"class":5356},"!\n",[5212,11728,11729],{"class":5214,"line":5263},[5212,11730,5662],{"emptyLinePlaceholder":5661},[5212,11732,11733],{"class":5214,"line":5269},[5212,11734,11735],{"class":5547},"\u002F\u002F Транзакція 1: Відкочує зміни\n",[5212,11737,11738,11740],{"class":5214,"line":5275},[5212,11739,5422],{"class":5744},[5212,11741,5357],{"class":5356},[5212,11743,11744],{"class":5214,"line":5281},[5212,11745,5662],{"emptyLinePlaceholder":5661},[5212,11747,11748],{"class":5214,"line":5287},[5212,11749,11750],{"class":5547},"\u002F\u002F Транзакція 2 прочитала \"брудні\" дані, яких насправді немає!\n",[5190,11752,11753],{},[5136,11754,11755],{},"Коли використовувати:",[5092,11757,11758,11761],{},[5095,11759,11760],{},"Майже ніколи у production системах.",[5095,11762,11763],{},"Лише для аналітичних запитів, де точність даних не критична.",[5876,11765,11766,11769,11771,11772,11774,11775,11778,11779,11781],{},[5136,11767,11768],{},"PostgreSQL не підтримує READ UNCOMMITTED:",[5882,11770],{},"\nУ PostgreSQL ",[5110,11773,11586],{}," автоматично підвищується до ",[5110,11776,11777],{},"READ COMMITTED",". Справжній ",[5110,11780,11586],{}," доступний у MySQL\u002FInnoDB.",[5185,11783,11785],{"id":11784},"read-committed-default-у-postgresql","READ COMMITTED (default у PostgreSQL)",[5190,11787,11788,11791],{},[5136,11789,11790],{},"Транзакція бачить лише зафіксовані зміни"," інших транзакцій. Dirty reads неможливі.",[5190,11793,11794],{},[5136,11795,11796],{},"Налаштування:",[5204,11798,11800],{"className":5456,"code":11799,"language":5458,"meta":5208,"style":5208},"await queryRunner.startTransaction('READ COMMITTED');\n",[5110,11801,11802],{"__ignoreMap":5208},[5212,11803,11804,11806,11808,11810,11812,11814,11816],{"class":5214,"line":5215},[5212,11805,5466],{"class":5465},[5212,11807,10043],{"class":5469},[5212,11809,5314],{"class":5356},[5212,11811,10166],{"class":5475},[5212,11813,5479],{"class":5356},[5212,11815,10387],{"class":5384},[5212,11817,5656],{"class":5356},[5190,11819,11820],{},[5136,11821,11822],{},"Проблема — non-repeatable reads:",[5204,11824,11826],{"className":5456,"code":11825,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1\nBEGIN;\nSELECT balance FROM accounts WHERE id = 1;  -- balance = 1000\n\n\u002F\u002F Транзакція 2\nBEGIN;\nUPDATE accounts SET balance = 500 WHERE id = 1;\nCOMMIT;\n\n\u002F\u002F Транзакція 1: Повторне читання\nSELECT balance FROM accounts WHERE id = 1;  -- balance = 500 (змінилося!)\nCOMMIT;\n",[5110,11827,11828,11833,11839,11867,11871,11876,11882,11907,11913,11917,11922,11956],{"__ignoreMap":5208},[5212,11829,11830],{"class":5214,"line":5215},[5212,11831,11832],{"class":5547},"\u002F\u002F Транзакція 1\n",[5212,11834,11835,11837],{"class":5214,"line":5221},[5212,11836,5350],{"class":5744},[5212,11838,5357],{"class":5356},[5212,11840,11841,11843,11845,11847,11849,11851,11853,11855,11857,11860,11862,11864],{"class":5214,"line":5227},[5212,11842,5811],{"class":5744},[5212,11844,5759],{"class":5469},[5212,11846,5816],{"class":5744},[5212,11848,5753],{"class":5469},[5212,11850,5378],{"class":5744},[5212,11852,5774],{"class":5469},[5212,11854,5762],{"class":5356},[5212,11856,6234],{"class":5374},[5212,11858,11859],{"class":5356},";  -- ",[5212,11861,5530],{"class":5469},[5212,11863,5762],{"class":5356},[5212,11865,11866],{"class":5374},"1000\n",[5212,11868,11869],{"class":5214,"line":5233},[5212,11870,5662],{"emptyLinePlaceholder":5661},[5212,11872,11873],{"class":5214,"line":5239},[5212,11874,11875],{"class":5547},"\u002F\u002F Транзакція 2\n",[5212,11877,11878,11880],{"class":5214,"line":5245},[5212,11879,5350],{"class":5744},[5212,11881,5357],{"class":5356},[5212,11883,11884,11886,11888,11890,11892,11894,11897,11899,11901,11903,11905],{"class":5214,"line":5251},[5212,11885,5362],{"class":5744},[5212,11887,5753],{"class":5469},[5212,11889,5756],{"class":5744},[5212,11891,5759],{"class":5469},[5212,11893,5762],{"class":5356},[5212,11895,11896],{"class":5374},"500",[5212,11898,5378],{"class":5744},[5212,11900,5774],{"class":5469},[5212,11902,5762],{"class":5356},[5212,11904,6234],{"class":5374},[5212,11906,5357],{"class":5356},[5212,11908,11909,11911],{"class":5214,"line":5257},[5212,11910,5414],{"class":5744},[5212,11912,5357],{"class":5356},[5212,11914,11915],{"class":5214,"line":5263},[5212,11916,5662],{"emptyLinePlaceholder":5661},[5212,11918,11919],{"class":5214,"line":5269},[5212,11920,11921],{"class":5547},"\u002F\u002F Транзакція 1: Повторне читання\n",[5212,11923,11924,11926,11928,11930,11932,11934,11936,11938,11940,11942,11944,11946,11948,11950,11953],{"class":5214,"line":5275},[5212,11925,5811],{"class":5744},[5212,11927,5759],{"class":5469},[5212,11929,5816],{"class":5744},[5212,11931,5753],{"class":5469},[5212,11933,5378],{"class":5744},[5212,11935,5774],{"class":5469},[5212,11937,5762],{"class":5356},[5212,11939,6234],{"class":5374},[5212,11941,11859],{"class":5356},[5212,11943,5530],{"class":5469},[5212,11945,5762],{"class":5356},[5212,11947,11896],{"class":5374},[5212,11949,5485],{"class":5356},[5212,11951,11952],{"class":5469},"змінилося",[5212,11954,11955],{"class":5356},"!)\n",[5212,11957,11958,11960],{"class":5214,"line":5281},[5212,11959,5414],{"class":5744},[5212,11961,5357],{"class":5356},[5190,11963,11964,11965,11968],{},"Транзакція 1 бачить ",[5136,11966,11967],{},"різні значення"," при повторному читанні того самого запису.",[5190,11970,11971],{},[5136,11972,11755],{},[5092,11974,11975,11978],{},[5095,11976,11977],{},"За замовчуванням для більшості застосунків.",[5095,11979,11980],{},"Баланс між продуктивністю та консистентністю.",[5185,11982,11984],{"id":11983},"repeatable-read","REPEATABLE READ",[5190,11986,11987,11990],{},[5136,11988,11989],{},"Гарантує, що повторне читання"," того самого запису поверне те саме значення протягом транзакції. Non-repeatable reads неможливі.",[5190,11992,11993],{},[5136,11994,11796],{},[5204,11996,11998],{"className":5456,"code":11997,"language":5458,"meta":5208,"style":5208},"await queryRunner.startTransaction('REPEATABLE READ');\n",[5110,11999,12000],{"__ignoreMap":5208},[5212,12001,12002,12004,12006,12008,12010,12012,12015],{"class":5214,"line":5215},[5212,12003,5466],{"class":5465},[5212,12005,10043],{"class":5469},[5212,12007,5314],{"class":5356},[5212,12009,10166],{"class":5475},[5212,12011,5479],{"class":5356},[5212,12013,12014],{"class":5384},"'REPEATABLE READ'",[5212,12016,5656],{"class":5356},[5190,12018,12019],{},[5136,12020,12021],{},"Як працює:",[5204,12023,12025],{"className":5456,"code":12024,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1\nBEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;\nSELECT balance FROM accounts WHERE id = 1;  -- balance = 1000\n\n\u002F\u002F Транзакція 2\nBEGIN;\nUPDATE accounts SET balance = 500 WHERE id = 1;\nCOMMIT;\n\n\u002F\u002F Транзакція 1: Повторне читання\nSELECT balance FROM accounts WHERE id = 1;  -- balance = 1000 (не змінилося!)\nCOMMIT;\n",[5110,12026,12027,12031,12051,12077,12081,12085,12091,12115,12121,12125,12129,12164],{"__ignoreMap":5208},[5212,12028,12029],{"class":5214,"line":5215},[5212,12030,11832],{"class":5547},[5212,12032,12033,12035,12037,12040,12043,12046,12049],{"class":5214,"line":5221},[5212,12034,5350],{"class":5744},[5212,12036,5353],{"class":5744},[5212,12038,12039],{"class":5744}," ISOLATION",[5212,12041,12042],{"class":5744}," LEVEL",[5212,12044,12045],{"class":5744}," REPEATABLE",[5212,12047,12048],{"class":5744}," READ",[5212,12050,5357],{"class":5356},[5212,12052,12053,12055,12057,12059,12061,12063,12065,12067,12069,12071,12073,12075],{"class":5214,"line":5227},[5212,12054,5811],{"class":5744},[5212,12056,5759],{"class":5469},[5212,12058,5816],{"class":5744},[5212,12060,5753],{"class":5469},[5212,12062,5378],{"class":5744},[5212,12064,5774],{"class":5469},[5212,12066,5762],{"class":5356},[5212,12068,6234],{"class":5374},[5212,12070,11859],{"class":5356},[5212,12072,5530],{"class":5469},[5212,12074,5762],{"class":5356},[5212,12076,11866],{"class":5374},[5212,12078,12079],{"class":5214,"line":5233},[5212,12080,5662],{"emptyLinePlaceholder":5661},[5212,12082,12083],{"class":5214,"line":5239},[5212,12084,11875],{"class":5547},[5212,12086,12087,12089],{"class":5214,"line":5245},[5212,12088,5350],{"class":5744},[5212,12090,5357],{"class":5356},[5212,12092,12093,12095,12097,12099,12101,12103,12105,12107,12109,12111,12113],{"class":5214,"line":5251},[5212,12094,5362],{"class":5744},[5212,12096,5753],{"class":5469},[5212,12098,5756],{"class":5744},[5212,12100,5759],{"class":5469},[5212,12102,5762],{"class":5356},[5212,12104,11896],{"class":5374},[5212,12106,5378],{"class":5744},[5212,12108,5774],{"class":5469},[5212,12110,5762],{"class":5356},[5212,12112,6234],{"class":5374},[5212,12114,5357],{"class":5356},[5212,12116,12117,12119],{"class":5214,"line":5257},[5212,12118,5414],{"class":5744},[5212,12120,5357],{"class":5356},[5212,12122,12123],{"class":5214,"line":5263},[5212,12124,5662],{"emptyLinePlaceholder":5661},[5212,12126,12127],{"class":5214,"line":5269},[5212,12128,11921],{"class":5547},[5212,12130,12131,12133,12135,12137,12139,12141,12143,12145,12147,12149,12151,12153,12155,12157,12159,12162],{"class":5214,"line":5275},[5212,12132,5811],{"class":5744},[5212,12134,5759],{"class":5469},[5212,12136,5816],{"class":5744},[5212,12138,5753],{"class":5469},[5212,12140,5378],{"class":5744},[5212,12142,5774],{"class":5469},[5212,12144,5762],{"class":5356},[5212,12146,6234],{"class":5374},[5212,12148,11859],{"class":5356},[5212,12150,5530],{"class":5469},[5212,12152,5762],{"class":5356},[5212,12154,7098],{"class":5374},[5212,12156,5485],{"class":5356},[5212,12158,5791],{"class":5469},[5212,12160,12161],{"class":5469}," змінилося",[5212,12163,11955],{"class":5356},[5212,12165,12166,12168],{"class":5214,"line":5281},[5212,12167,5414],{"class":5744},[5212,12169,5357],{"class":5356},[5190,12171,11964,12172,12175],{},[5136,12173,12174],{},"snapshot"," БД на момент початку транзакції.",[5190,12177,12178],{},[5136,12179,12180],{},"Проблема — phantom reads (у деяких БД):",[5204,12182,12184],{"className":5340,"code":12183,"language":5342,"meta":5208,"style":5208},"-- Транзакція 1\nBEGIN;\nSELECT COUNT(*) FROM users WHERE age > 18;  -- COUNT = 100\n\n-- Транзакція 2\nINSERT INTO users (age) VALUES (25);\nCOMMIT;\n\n-- Транзакція 1\nSELECT COUNT(*) FROM users WHERE age > 18;  -- COUNT = 101 (phantom row!)\n",[5110,12185,12186,12191,12197,12227,12231,12236,12252,12258,12262,12266],{"__ignoreMap":5208},[5212,12187,12188],{"class":5214,"line":5215},[5212,12189,12190],{"class":5547},"-- Транзакція 1\n",[5212,12192,12193,12195],{"class":5214,"line":5221},[5212,12194,5350],{"class":5349},[5212,12196,5357],{"class":5356},[5212,12198,12199,12201,12204,12207,12210,12213,12216,12219,12222,12224],{"class":5214,"line":5227},[5212,12200,5811],{"class":5349},[5212,12202,12203],{"class":5475}," COUNT",[5212,12205,12206],{"class":5356},"(*) ",[5212,12208,12209],{"class":5349},"FROM",[5212,12211,12212],{"class":5356}," users ",[5212,12214,12215],{"class":5349},"WHERE",[5212,12217,12218],{"class":5356}," age > ",[5212,12220,12221],{"class":5374},"18",[5212,12223,5691],{"class":5356},[5212,12225,12226],{"class":5547},"-- COUNT = 100\n",[5212,12228,12229],{"class":5214,"line":5233},[5212,12230,5662],{"emptyLinePlaceholder":5661},[5212,12232,12233],{"class":5214,"line":5239},[5212,12234,12235],{"class":5547},"-- Транзакція 2\n",[5212,12237,12238,12240,12243,12245,12247,12250],{"class":5214,"line":5245},[5212,12239,7954],{"class":5349},[5212,12241,12242],{"class":5356}," users (age) ",[5212,12244,7960],{"class":5349},[5212,12246,5485],{"class":5356},[5212,12248,12249],{"class":5374},"25",[5212,12251,5656],{"class":5356},[5212,12253,12254,12256],{"class":5214,"line":5251},[5212,12255,5414],{"class":5349},[5212,12257,5357],{"class":5356},[5212,12259,12260],{"class":5214,"line":5257},[5212,12261,5662],{"emptyLinePlaceholder":5661},[5212,12263,12264],{"class":5214,"line":5263},[5212,12265,12190],{"class":5547},[5212,12267,12268,12270,12272,12274,12276,12278,12280,12282,12284,12286],{"class":5214,"line":5269},[5212,12269,5811],{"class":5349},[5212,12271,12203],{"class":5475},[5212,12273,12206],{"class":5356},[5212,12275,12209],{"class":5349},[5212,12277,12212],{"class":5356},[5212,12279,12215],{"class":5349},[5212,12281,12218],{"class":5356},[5212,12283,12221],{"class":5374},[5212,12285,5691],{"class":5356},[5212,12287,12288],{"class":5547},"-- COUNT = 101 (phantom row!)\n",[5876,12290,12291,12294,12296,12297,12299,12300,5841],{},[5136,12292,12293],{},"PostgreSQL REPEATABLE READ запобігає phantom reads:",[5882,12295],{},"\nУ PostgreSQL рівень ",[5110,12298,11984],{}," також захищає від phantom reads через MVCC (",[5099,12301,12302],{},"Multi-Version Concurrency Control",[5190,12304,12305],{},[5136,12306,11755],{},[5092,12308,12309,12312],{},[5095,12310,12311],{},"Для фінансових операцій, де критична консистентність даних.",[5095,12313,12314],{},"Коли потрібна гарантія, що дані не зміняться протягом транзакції.",[5185,12316,12318],{"id":12317},"serializable","SERIALIZABLE",[5190,12320,12321,12324,12325,12328],{},[5136,12322,12323],{},"Найвищий рівень ізоляції."," Транзакції виконуються так, ніби вони виконувалися ",[5136,12326,12327],{},"послідовно",", одна за одною, без конкуренції.",[5190,12330,12331],{},[5136,12332,11796],{},[5204,12334,12336],{"className":5456,"code":12335,"language":5458,"meta":5208,"style":5208},"await queryRunner.startTransaction('SERIALIZABLE');\n",[5110,12337,12338],{"__ignoreMap":5208},[5212,12339,12340,12342,12344,12346,12348,12350,12353],{"class":5214,"line":5215},[5212,12341,5466],{"class":5465},[5212,12343,10043],{"class":5469},[5212,12345,5314],{"class":5356},[5212,12347,10166],{"class":5475},[5212,12349,5479],{"class":5356},[5212,12351,12352],{"class":5384},"'SERIALIZABLE'",[5212,12354,5656],{"class":5356},[5190,12356,12357],{},[5136,12358,12021],{},[5190,12360,12361,12362,12365,12366,12369],{},"PostgreSQL відстежує ",[5136,12363,12364],{},"залежності між транзакціями"," та відкочує ті, що можуть призвести до ",[5136,12367,12368],{},"serialization anomaly"," (порушення послідовності).",[5190,12371,12372],{},[5136,12373,5453],{},[5204,12375,12377],{"className":5456,"code":12376,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1\nBEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;\nSELECT SUM(balance) FROM accounts;  -- SUM = 10000\n\n\u002F\u002F Транзакція 2\nBEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;\nINSERT INTO accounts (balance) VALUES (500);\nCOMMIT;\n\n\u002F\u002F Транзакція 1\nINSERT INTO accounts (balance) VALUES (500);\nCOMMIT;  -- ❌ ERROR: could not serialize access due to read\u002Fwrite dependencies\n",[5110,12378,12379,12383,12398,12425,12429,12433,12447,12471,12477,12481,12485,12507],{"__ignoreMap":5208},[5212,12380,12381],{"class":5214,"line":5215},[5212,12382,11832],{"class":5547},[5212,12384,12385,12387,12389,12391,12393,12396],{"class":5214,"line":5221},[5212,12386,5350],{"class":5744},[5212,12388,5353],{"class":5744},[5212,12390,12039],{"class":5744},[5212,12392,12042],{"class":5744},[5212,12394,12395],{"class":5744}," SERIALIZABLE",[5212,12397,5357],{"class":5356},[5212,12399,12400,12402,12405,12407,12409,12411,12413,12415,12417,12420,12422],{"class":5214,"line":5227},[5212,12401,5811],{"class":5744},[5212,12403,12404],{"class":5475}," SUM",[5212,12406,5479],{"class":5356},[5212,12408,5530],{"class":5469},[5212,12410,5491],{"class":5356},[5212,12412,12209],{"class":5744},[5212,12414,5753],{"class":5469},[5212,12416,11859],{"class":5356},[5212,12418,12419],{"class":5744},"SUM",[5212,12421,5762],{"class":5356},[5212,12423,12424],{"class":5374},"10000\n",[5212,12426,12427],{"class":5214,"line":5233},[5212,12428,5662],{"emptyLinePlaceholder":5661},[5212,12430,12431],{"class":5214,"line":5239},[5212,12432,11875],{"class":5547},[5212,12434,12435,12437,12439,12441,12443,12445],{"class":5214,"line":5245},[5212,12436,5350],{"class":5744},[5212,12438,5353],{"class":5744},[5212,12440,12039],{"class":5744},[5212,12442,12042],{"class":5744},[5212,12444,12395],{"class":5744},[5212,12446,5357],{"class":5356},[5212,12448,12449,12452,12455,12457,12459,12461,12463,12465,12467,12469],{"class":5214,"line":5251},[5212,12450,12451],{"class":5744},"INSERT",[5212,12453,12454],{"class":5744}," INTO",[5212,12456,5753],{"class":5475},[5212,12458,5485],{"class":5356},[5212,12460,5530],{"class":5469},[5212,12462,5491],{"class":5356},[5212,12464,7960],{"class":5475},[5212,12466,5485],{"class":5356},[5212,12468,11896],{"class":5374},[5212,12470,5656],{"class":5356},[5212,12472,12473,12475],{"class":5214,"line":5257},[5212,12474,5414],{"class":5744},[5212,12476,5357],{"class":5356},[5212,12478,12479],{"class":5214,"line":5263},[5212,12480,5662],{"emptyLinePlaceholder":5661},[5212,12482,12483],{"class":5214,"line":5269},[5212,12484,11832],{"class":5547},[5212,12486,12487,12489,12491,12493,12495,12497,12499,12501,12503,12505],{"class":5214,"line":5275},[5212,12488,12451],{"class":5744},[5212,12490,12454],{"class":5744},[5212,12492,5753],{"class":5475},[5212,12494,5485],{"class":5356},[5212,12496,5530],{"class":5469},[5212,12498,5491],{"class":5356},[5212,12500,7960],{"class":5475},[5212,12502,5485],{"class":5356},[5212,12504,11896],{"class":5374},[5212,12506,5656],{"class":5356},[5212,12508,12509,12511,12514,12518,12520,12523,12526,12529,12532,12535,12538,12541,12544,12547],{"class":5214,"line":5281},[5212,12510,5414],{"class":5744},[5212,12512,12513],{"class":5356},";  -- ❌ ",[5212,12515,12517],{"class":12516},"s5IvJ","ERROR",[5212,12519,7447],{"class":5356},[5212,12521,12522],{"class":5469},"could",[5212,12524,12525],{"class":5469}," not",[5212,12527,12528],{"class":5469}," serialize",[5212,12530,12531],{"class":5469}," access",[5212,12533,12534],{"class":5469}," due",[5212,12536,12537],{"class":5469}," to",[5212,12539,12540],{"class":5469}," read",[5212,12542,12543],{"class":5356},"\u002F",[5212,12545,12546],{"class":5469},"write",[5212,12548,12549],{"class":5469}," dependencies\n",[5190,12551,12552],{},[5136,12553,11755],{},[5092,12555,12556,12559],{},[5095,12557,12558],{},"Для критичних операцій, де порушення послідовності неприпустиме.",[5095,12560,12561],{},"У системах з низькою конкуренцією (мало конкурентних транзакцій).",[5190,12563,12564],{},[5136,12565,12566],{},"Недоліки:",[5092,12568,12569,12575],{},[5095,12570,12571,12574],{},[5136,12572,12573],{},"Найнижча продуктивність"," через додаткові перевірки.",[5095,12576,12577,12580],{},[5136,12578,12579],{},"Високий ризик serialization failures"," → потрібна retry logic.",[5185,12582,12584],{"id":12583},"вибір-рівня-ізоляції","Вибір рівня ізоляції",[5190,12586,12587],{},[5136,12588,12589],{},"Рекомендації:",[12591,12592,12593,12605],"table",{},[12594,12595,12596],"thead",{},[12597,12598,12599,12603],"tr",{},[12600,12601,12602],"th",{},"Сценарій",[12600,12604,11491],{},[12606,12607,12608,12617,12624,12631],"tbody",{},[12597,12609,12610,12614],{},[12611,12612,12613],"td",{},"Звичайні CRUD операції",[12611,12615,12616],{},"READ COMMITTED (default)",[12597,12618,12619,12622],{},[12611,12620,12621],{},"Фінансові операції, бронювання",[12611,12623,11984],{},[12597,12625,12626,12629],{},[12611,12627,12628],{},"Критичні операції з суворою послідовністю",[12611,12630,12318],{},[12597,12632,12633,12636],{},[12611,12634,12635],{},"Аналітичні запити (не критична точність)",[12611,12637,12638],{},"READ UNCOMMITTED (якщо підтримується)",[5185,12640,12642],{"id":12641},"performance-vs-consistency-tradeoffs","Performance vs consistency tradeoffs",[5201,12644,12645],{},[5204,12646,12648],{"className":5206,"code":12647,"language":5201,"meta":5208,"style":5208},"flowchart LR\n    A[READ\u003Cbr\u002F>UNCOMMITTED] -->|Швидше| B[READ\u003Cbr\u002F>COMMITTED]\n    B -->|Швидше| C[REPEATABLE\u003Cbr\u002F>READ]\n    C -->|Швидше| D[SERIALIZABLE]\n    \n    A -->|Менше блокувань| B\n    B -->|Менше блокувань| C\n    C -->|Менше блокувань| D\n    \n    D -->|Більше консистентності| C\n    C -->|Більше консистентності| B\n    B -->|Більше консистентності| A\n    \n    style A fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n    style D fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n",[5110,12649,12650,12654,12659,12664,12669,12673,12678,12683,12688,12692,12697,12702,12707,12711,12716],{"__ignoreMap":5208},[5212,12651,12652],{"class":5214,"line":5215},[5212,12653,11515],{},[5212,12655,12656],{"class":5214,"line":5221},[5212,12657,12658],{},"    A[READ\u003Cbr\u002F>UNCOMMITTED] -->|Швидше| B[READ\u003Cbr\u002F>COMMITTED]\n",[5212,12660,12661],{"class":5214,"line":5227},[5212,12662,12663],{},"    B -->|Швидше| C[REPEATABLE\u003Cbr\u002F>READ]\n",[5212,12665,12666],{"class":5214,"line":5233},[5212,12667,12668],{},"    C -->|Швидше| D[SERIALIZABLE]\n",[5212,12670,12671],{"class":5214,"line":5239},[5212,12672,5266],{},[5212,12674,12675],{"class":5214,"line":5245},[5212,12676,12677],{},"    A -->|Менше блокувань| B\n",[5212,12679,12680],{"class":5214,"line":5251},[5212,12681,12682],{},"    B -->|Менше блокувань| C\n",[5212,12684,12685],{"class":5214,"line":5257},[5212,12686,12687],{},"    C -->|Менше блокувань| D\n",[5212,12689,12690],{"class":5214,"line":5263},[5212,12691,5266],{},[5212,12693,12694],{"class":5214,"line":5269},[5212,12695,12696],{},"    D -->|Більше консистентності| C\n",[5212,12698,12699],{"class":5214,"line":5275},[5212,12700,12701],{},"    C -->|Більше консистентності| B\n",[5212,12703,12704],{"class":5214,"line":5281},[5212,12705,12706],{},"    B -->|Більше консистентності| A\n",[5212,12708,12709],{"class":5214,"line":5287},[5212,12710,5266],{},[5212,12712,12713],{"class":5214,"line":5293},[5212,12714,12715],{},"    style A fill:#DCFCE7,stroke:#16a34a,color:#1e293b\n",[5212,12717,12718],{"class":5214,"line":6165},[5212,12719,12720],{},"    style D fill:#FEE2E2,stroke:#dc2626,color:#1e293b\n",[5190,12722,12723],{},[5136,12724,12725],{},"Баланс:",[5092,12727,12728,12738],{},[5095,12729,12730,12733,12734,12737],{},[5136,12731,12732],{},"Вищий рівень ізоляції"," = більше консистентності, але ",[5136,12735,12736],{},"нижча продуктивність"," через блокування.",[5095,12739,12740,12743,12744,12747],{},[5136,12741,12742],{},"Нижчий рівень ізоляції"," = вища продуктивність, але ",[5136,12745,12746],{},"ризик anomalies"," (dirty reads, phantom reads).",[9869,12749,12750,12753,12755,12756,12758,12759,12761],{},[5136,12751,12752],{},"Best Practice:",[5882,12754],{},"\nВикористовуйте ",[5136,12757,11777],{}," за замовчуванням та підвищуйте до ",[5136,12760,11984],{}," лише для критичних операцій, де потрібна гарантія консистентності даних.",[5177,12763],{},[5180,12765,12767],{"id":12766},"обробка-помилок-у-транзакціях","Обробка помилок у транзакціях",[5185,12769,12771],{"id":12770},"try-catch-блоки","Try-catch блоки",[5190,12773,12774,12775,12778],{},"Завжди огортайте транзакції у ",[5110,12776,12777],{},"try-catch"," блоки для обробки помилок.",[5190,12780,12781],{},[5136,12782,12783],{},"Базовий шаблон:",[5204,12785,12787],{"className":5456,"code":12786,"language":5458,"meta":5208,"style":5208},"try {\n  await dataSource.transaction(async (manager) => {\n    \u002F\u002F Операції з БД\n  });\n} catch (error) {\n  console.error('Transaction failed:', error.message);\n  throw error; \u002F\u002F Або обробити помилку\n}\n",[5110,12788,12789,12795,12819,12824,12828,12840,12863,12875],{"__ignoreMap":5208},[5212,12790,12791,12793],{"class":5214,"line":5215},[5212,12792,7142],{"class":5465},[5212,12794,5497],{"class":5356},[5212,12796,12797,12799,12801,12803,12805,12807,12809,12811,12813,12815,12817],{"class":5214,"line":5221},[5212,12798,5502],{"class":5465},[5212,12800,5470],{"class":5469},[5212,12802,5314],{"class":5356},[5212,12804,5476],{"class":5475},[5212,12806,5479],{"class":5356},[5212,12808,5482],{"class":5349},[5212,12810,5485],{"class":5356},[5212,12812,5488],{"class":5469},[5212,12814,5491],{"class":5356},[5212,12816,5494],{"class":5349},[5212,12818,5497],{"class":5356},[5212,12820,12821],{"class":5214,"line":5227},[5212,12822,12823],{"class":5547},"    \u002F\u002F Операції з БД\n",[5212,12825,12826],{"class":5214,"line":5233},[5212,12827,6050],{"class":5356},[5212,12829,12830,12832,12834,12836,12838],{"class":5214,"line":5239},[5212,12831,7351],{"class":5356},[5212,12833,7354],{"class":5465},[5212,12835,5485],{"class":5356},[5212,12837,7359],{"class":5469},[5212,12839,6948],{"class":5356},[5212,12841,12842,12844,12846,12848,12850,12853,12855,12857,12859,12861],{"class":5214,"line":5245},[5212,12843,7366],{"class":5469},[5212,12845,5314],{"class":5356},[5212,12847,7359],{"class":5475},[5212,12849,5479],{"class":5356},[5212,12851,12852],{"class":5384},"'Transaction failed:'",[5212,12854,5888],{"class":5356},[5212,12856,7359],{"class":5469},[5212,12858,5314],{"class":5356},[5212,12860,7384],{"class":5469},[5212,12862,5656],{"class":5356},[5212,12864,12865,12867,12869,12872],{"class":5214,"line":5251},[5212,12866,10292],{"class":5465},[5212,12868,10295],{"class":5469},[5212,12870,12871],{"class":5356},"; ",[5212,12873,12874],{"class":5547},"\u002F\u002F Або обробити помилку\n",[5212,12876,12877],{"class":5214,"line":5257},[5212,12878,7396],{"class":5356},[5185,12880,12882],{"id":12881},"автоматичний-rollback","Автоматичний rollback",[5190,12884,8953,12885,12887,12888,12891],{},[5110,12886,5112],{}," rollback виконується ",[5136,12889,12890],{},"автоматично"," при виникненні помилки:",[5204,12893,12895],{"className":5456,"code":12894,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  await manager.save(User, { email: 'user@example.com' });\n  throw new Error('Simulated error');\n  \u002F\u002F Автоматичний ROLLBACK — користувач НЕ створений\n});\n",[5110,12896,12897,12921,12943,12958,12963],{"__ignoreMap":5208},[5212,12898,12899,12901,12903,12905,12907,12909,12911,12913,12915,12917,12919],{"class":5214,"line":5215},[5212,12900,5466],{"class":5465},[5212,12902,5470],{"class":5469},[5212,12904,5314],{"class":5356},[5212,12906,5476],{"class":5475},[5212,12908,5479],{"class":5356},[5212,12910,5482],{"class":5349},[5212,12912,5485],{"class":5356},[5212,12914,5488],{"class":5469},[5212,12916,5491],{"class":5356},[5212,12918,5494],{"class":5349},[5212,12920,5497],{"class":5356},[5212,12922,12923,12925,12927,12929,12931,12933,12935,12937,12939,12941],{"class":5214,"line":5221},[5212,12924,5502],{"class":5465},[5212,12926,5505],{"class":5469},[5212,12928,5314],{"class":5356},[5212,12930,6006],{"class":5475},[5212,12932,5479],{"class":5356},[5212,12934,6402],{"class":5469},[5212,12936,5518],{"class":5356},[5212,12938,8075],{"class":5469},[5212,12940,6570],{"class":5384},[5212,12942,7018],{"class":5356},[5212,12944,12945,12947,12949,12951,12953,12956],{"class":5214,"line":5227},[5212,12946,10292],{"class":5465},[5212,12948,6956],{"class":5349},[5212,12950,6959],{"class":5475},[5212,12952,5479],{"class":5356},[5212,12954,12955],{"class":5384},"'Simulated error'",[5212,12957,5656],{"class":5356},[5212,12959,12960],{"class":5214,"line":5233},[5212,12961,12962],{"class":5547},"  \u002F\u002F Автоматичний ROLLBACK — користувач НЕ створений\n",[5212,12964,12965],{"class":5214,"line":5239},[5212,12966,5597],{"class":5356},[5190,12968,12969],{},[5136,12970,12971],{},"З QueryRunner потрібен явний rollback:",[5204,12973,12975],{"className":5456,"code":12974,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\nawait queryRunner.connect();\nawait queryRunner.startTransaction();\n\ntry {\n  await queryRunner.manager.save(User, { email: 'user@example.com' });\n  throw new Error('Simulated error');\n  await queryRunner.commitTransaction();\n} catch (error) {\n  await queryRunner.rollbackTransaction(); \u002F\u002F ✅ Явний rollback\n  throw error;\n} finally {\n  await queryRunner.release();\n}\n",[5110,12976,12977,12997,13009,13021,13025,13031,13057,13071,13083,13095,13110,13118,13126,13138],{"__ignoreMap":5208},[5212,12978,12979,12981,12983,12985,12987,12989,12991,12993,12995],{"class":5214,"line":5215},[5212,12980,7220],{"class":5349},[5212,12982,10043],{"class":5744},[5212,12984,5762],{"class":5356},[5212,12986,10048],{"class":5349},[5212,12988,5314],{"class":5356},[5212,12990,7707],{"class":5469},[5212,12992,5314],{"class":5356},[5212,12994,10057],{"class":5475},[5212,12996,9460],{"class":5356},[5212,12998,12999,13001,13003,13005,13007],{"class":5214,"line":5221},[5212,13000,5466],{"class":5465},[5212,13002,10043],{"class":5469},[5212,13004,5314],{"class":5356},[5212,13006,10144],{"class":5475},[5212,13008,9460],{"class":5356},[5212,13010,13011,13013,13015,13017,13019],{"class":5214,"line":5227},[5212,13012,5466],{"class":5465},[5212,13014,10043],{"class":5469},[5212,13016,5314],{"class":5356},[5212,13018,10166],{"class":5475},[5212,13020,9460],{"class":5356},[5212,13022,13023],{"class":5214,"line":5233},[5212,13024,5662],{"emptyLinePlaceholder":5661},[5212,13026,13027,13029],{"class":5214,"line":5239},[5212,13028,7142],{"class":5465},[5212,13030,5497],{"class":5356},[5212,13032,13033,13035,13037,13039,13041,13043,13045,13047,13049,13051,13053,13055],{"class":5214,"line":5245},[5212,13034,5502],{"class":5465},[5212,13036,10043],{"class":5469},[5212,13038,5314],{"class":5356},[5212,13040,5488],{"class":5469},[5212,13042,5314],{"class":5356},[5212,13044,6006],{"class":5475},[5212,13046,5479],{"class":5356},[5212,13048,6402],{"class":5469},[5212,13050,5518],{"class":5356},[5212,13052,8075],{"class":5469},[5212,13054,6570],{"class":5384},[5212,13056,7018],{"class":5356},[5212,13058,13059,13061,13063,13065,13067,13069],{"class":5214,"line":5251},[5212,13060,10292],{"class":5465},[5212,13062,6956],{"class":5349},[5212,13064,6959],{"class":5475},[5212,13066,5479],{"class":5356},[5212,13068,12955],{"class":5384},[5212,13070,5656],{"class":5356},[5212,13072,13073,13075,13077,13079,13081],{"class":5214,"line":5257},[5212,13074,5502],{"class":5465},[5212,13076,10043],{"class":5469},[5212,13078,5314],{"class":5356},[5212,13080,10255],{"class":5475},[5212,13082,9460],{"class":5356},[5212,13084,13085,13087,13089,13091,13093],{"class":5214,"line":5263},[5212,13086,7351],{"class":5356},[5212,13088,7354],{"class":5465},[5212,13090,5485],{"class":5356},[5212,13092,7359],{"class":5469},[5212,13094,6948],{"class":5356},[5212,13096,13097,13099,13101,13103,13105,13107],{"class":5214,"line":5269},[5212,13098,5502],{"class":5465},[5212,13100,10043],{"class":5469},[5212,13102,5314],{"class":5356},[5212,13104,10285],{"class":5475},[5212,13106,10769],{"class":5356},[5212,13108,13109],{"class":5547},"\u002F\u002F ✅ Явний rollback\n",[5212,13111,13112,13114,13116],{"class":5214,"line":5275},[5212,13113,10292],{"class":5465},[5212,13115,10295],{"class":5469},[5212,13117,5357],{"class":5356},[5212,13119,13120,13122,13124],{"class":5214,"line":5281},[5212,13121,7351],{"class":5356},[5212,13123,10304],{"class":5465},[5212,13125,5497],{"class":5356},[5212,13127,13128,13130,13132,13134,13136],{"class":5214,"line":5287},[5212,13129,5502],{"class":5465},[5212,13131,10043],{"class":5469},[5212,13133,5314],{"class":5356},[5212,13135,10322],{"class":5475},[5212,13137,9460],{"class":5356},[5212,13139,13140],{"class":5214,"line":5293},[5212,13141,7396],{"class":5356},[5185,13143,13145],{"id":13144},"логування-помилок","Логування помилок",[5190,13147,13148],{},"Логуйте помилки транзакцій для діагностики проблем:",[5204,13150,13152],{"className":5456,"code":13151,"language":5458,"meta":5208,"style":5208},"try {\n  await dataSource.transaction(async (manager) => {\n    \u002F\u002F Операції\n  });\n} catch (error) {\n  this.logger.error('Transaction failed', {\n    error: error.message,\n    stack: error.stack,\n    context: 'createOrderWithInventory',\n  });\n  throw error;\n}\n",[5110,13153,13154,13160,13184,13189,13193,13205,13226,13239,13253,13263,13267,13275],{"__ignoreMap":5208},[5212,13155,13156,13158],{"class":5214,"line":5215},[5212,13157,7142],{"class":5465},[5212,13159,5497],{"class":5356},[5212,13161,13162,13164,13166,13168,13170,13172,13174,13176,13178,13180,13182],{"class":5214,"line":5221},[5212,13163,5502],{"class":5465},[5212,13165,5470],{"class":5469},[5212,13167,5314],{"class":5356},[5212,13169,5476],{"class":5475},[5212,13171,5479],{"class":5356},[5212,13173,5482],{"class":5349},[5212,13175,5485],{"class":5356},[5212,13177,5488],{"class":5469},[5212,13179,5491],{"class":5356},[5212,13181,5494],{"class":5349},[5212,13183,5497],{"class":5356},[5212,13185,13186],{"class":5214,"line":5227},[5212,13187,13188],{"class":5547},"    \u002F\u002F Операції\n",[5212,13190,13191],{"class":5214,"line":5233},[5212,13192,6050],{"class":5356},[5212,13194,13195,13197,13199,13201,13203],{"class":5214,"line":5239},[5212,13196,7351],{"class":5356},[5212,13198,7354],{"class":5465},[5212,13200,5485],{"class":5356},[5212,13202,7359],{"class":5469},[5212,13204,6948],{"class":5356},[5212,13206,13207,13210,13212,13215,13217,13219,13221,13224],{"class":5214,"line":5245},[5212,13208,13209],{"class":5349},"  this",[5212,13211,5314],{"class":5356},[5212,13213,13214],{"class":5469},"logger",[5212,13216,5314],{"class":5356},[5212,13218,7359],{"class":5475},[5212,13220,5479],{"class":5356},[5212,13222,13223],{"class":5384},"'Transaction failed'",[5212,13225,6014],{"class":5356},[5212,13227,13228,13231,13233,13235,13237],{"class":5214,"line":5251},[5212,13229,13230],{"class":5469},"    error:",[5212,13232,10295],{"class":5469},[5212,13234,5314],{"class":5356},[5212,13236,7384],{"class":5469},[5212,13238,6025],{"class":5356},[5212,13240,13241,13244,13246,13248,13251],{"class":5214,"line":5257},[5212,13242,13243],{"class":5469},"    stack:",[5212,13245,10295],{"class":5469},[5212,13247,5314],{"class":5356},[5212,13249,13250],{"class":5469},"stack",[5212,13252,6025],{"class":5356},[5212,13254,13255,13258,13261],{"class":5214,"line":5263},[5212,13256,13257],{"class":5469},"    context:",[5212,13259,13260],{"class":5384}," 'createOrderWithInventory'",[5212,13262,6025],{"class":5356},[5212,13264,13265],{"class":5214,"line":5269},[5212,13266,6050],{"class":5356},[5212,13268,13269,13271,13273],{"class":5214,"line":5275},[5212,13270,10292],{"class":5465},[5212,13272,10295],{"class":5469},[5212,13274,5357],{"class":5356},[5212,13276,13277],{"class":5214,"line":5281},[5212,13278,7396],{"class":5356},[5185,13280,13282],{"id":13281},"повторні-спроби-retry-logic","Повторні спроби (retry logic)",[5190,13284,13285,13286,13289,13290,13293],{},"Для ",[5136,13287,13288],{},"serialization failures"," або ",[5136,13291,13292],{},"deadlocks"," використовуйте retry logic:",[5204,13295,13297],{"className":5456,"code":13296,"language":5458,"meta":5208,"style":5208},"async function executeWithRetry\u003CT>(\n  fn: () => Promise\u003CT>,\n  maxRetries = 3,\n  delay = 100\n): Promise\u003CT> {\n  for (let attempt = 1; attempt \u003C= maxRetries; attempt++) {\n    try {\n      return await fn();\n    } catch (error) {\n      const isRetryable = \n        error.code === '40001' || \u002F\u002F Serialization failure (PostgreSQL)\n        error.code === '40P01';    \u002F\u002F Deadlock detected\n\n      if (!isRetryable || attempt === maxRetries) {\n        throw error;\n      }\n\n      console.warn(`Transaction failed (attempt ${attempt}\u002F${maxRetries}), retrying in ${delay}ms...`);\n      await new Promise(resolve => setTimeout(resolve, delay * attempt));\n    }\n  }\n}\n\n\u002F\u002F Використання\nawait executeWithRetry(async () => {\n  return dataSource.transaction(async (manager) => {\n    \u002F\u002F Критична операція\n  });\n});\n",[5110,13298,13299,13317,13337,13349,13359,13371,13406,13413,13424,13437,13447,13467,13486,13490,13509,13517,13521,13525,13569,13603,13607,13611,13615,13619,13624,13640,13665,13670,13674],{"__ignoreMap":5208},[5212,13300,13301,13303,13306,13309,13311,13314],{"class":5214,"line":5215},[5212,13302,5482],{"class":5349},[5212,13304,13305],{"class":5349}," function",[5212,13307,13308],{"class":5475}," executeWithRetry",[5212,13310,7689],{"class":5356},[5212,13312,13313],{"class":7450},"T",[5212,13315,13316],{"class":5356},">(\n",[5212,13318,13319,13322,13325,13327,13330,13332,13334],{"class":5214,"line":5221},[5212,13320,13321],{"class":5475},"  fn",[5212,13323,13324],{"class":5356},": () ",[5212,13326,5494],{"class":5349},[5212,13328,13329],{"class":7450}," Promise",[5212,13331,7689],{"class":5356},[5212,13333,13313],{"class":7450},[5212,13335,13336],{"class":5356},">,\n",[5212,13338,13339,13342,13344,13347],{"class":5214,"line":5227},[5212,13340,13341],{"class":5469},"  maxRetries",[5212,13343,5762],{"class":5356},[5212,13345,13346],{"class":5374},"3",[5212,13348,6025],{"class":5356},[5212,13350,13351,13354,13356],{"class":5214,"line":5233},[5212,13352,13353],{"class":5469},"  delay",[5212,13355,5762],{"class":5356},[5212,13357,13358],{"class":5374},"100\n",[5212,13360,13361,13363,13365,13367,13369],{"class":5214,"line":5239},[5212,13362,7683],{"class":5356},[5212,13364,7686],{"class":7450},[5212,13366,7689],{"class":5356},[5212,13368,13313],{"class":7450},[5212,13370,7694],{"class":5356},[5212,13372,13373,13376,13378,13381,13384,13386,13388,13390,13393,13396,13399,13401,13403],{"class":5214,"line":5245},[5212,13374,13375],{"class":5465},"  for",[5212,13377,5485],{"class":5356},[5212,13379,13380],{"class":5349},"let",[5212,13382,13383],{"class":5469}," attempt",[5212,13385,5762],{"class":5356},[5212,13387,6234],{"class":5374},[5212,13389,12871],{"class":5356},[5212,13391,13392],{"class":5469},"attempt",[5212,13394,13395],{"class":5356}," \u003C= ",[5212,13397,13398],{"class":5469},"maxRetries",[5212,13400,12871],{"class":5356},[5212,13402,13392],{"class":5469},[5212,13404,13405],{"class":5356},"++) {\n",[5212,13407,13408,13411],{"class":5214,"line":5251},[5212,13409,13410],{"class":5465},"    try",[5212,13412,5497],{"class":5356},[5212,13414,13415,13417,13419,13422],{"class":5214,"line":5257},[5212,13416,7902],{"class":5465},[5212,13418,6580],{"class":5465},[5212,13420,13421],{"class":5475}," fn",[5212,13423,9460],{"class":5356},[5212,13425,13426,13429,13431,13433,13435],{"class":5214,"line":5263},[5212,13427,13428],{"class":5356},"    } ",[5212,13430,7354],{"class":5465},[5212,13432,5485],{"class":5356},[5212,13434,7359],{"class":5469},[5212,13436,6948],{"class":5356},[5212,13438,13439,13441,13444],{"class":5214,"line":5269},[5212,13440,7735],{"class":5349},[5212,13442,13443],{"class":5744}," isRetryable",[5212,13445,13446],{"class":5356}," = \n",[5212,13448,13449,13452,13454,13456,13459,13462,13464],{"class":5214,"line":5275},[5212,13450,13451],{"class":5469},"        error",[5212,13453,5314],{"class":5356},[5212,13455,5110],{"class":5469},[5212,13457,13458],{"class":5356}," === ",[5212,13460,13461],{"class":5384},"'40001'",[5212,13463,11087],{"class":5356},[5212,13465,13466],{"class":5547},"\u002F\u002F Serialization failure (PostgreSQL)\n",[5212,13468,13469,13471,13473,13475,13477,13480,13483],{"class":5214,"line":5281},[5212,13470,13451],{"class":5469},[5212,13472,5314],{"class":5356},[5212,13474,5110],{"class":5469},[5212,13476,13458],{"class":5356},[5212,13478,13479],{"class":5384},"'40P01'",[5212,13481,13482],{"class":5356},";    ",[5212,13484,13485],{"class":5547},"\u002F\u002F Deadlock detected\n",[5212,13487,13488],{"class":5214,"line":5287},[5212,13489,5662],{"emptyLinePlaceholder":5661},[5212,13491,13492,13494,13496,13499,13501,13503,13505,13507],{"class":5214,"line":5293},[5212,13493,7239],{"class":5465},[5212,13495,6942],{"class":5356},[5212,13497,13498],{"class":5469},"isRetryable",[5212,13500,11087],{"class":5356},[5212,13502,13392],{"class":5469},[5212,13504,13458],{"class":5356},[5212,13506,13398],{"class":5469},[5212,13508,6948],{"class":5356},[5212,13510,13511,13513,13515],{"class":5214,"line":6165},[5212,13512,7262],{"class":5465},[5212,13514,10295],{"class":5469},[5212,13516,5357],{"class":5356},[5212,13518,13519],{"class":5214,"line":6171},[5212,13520,7294],{"class":5356},[5212,13522,13523],{"class":5214,"line":6207},[5212,13524,5662],{"emptyLinePlaceholder":5661},[5212,13526,13527,13530,13532,13535,13537,13540,13542,13544,13546,13548,13550,13552,13554,13557,13559,13562,13564,13567],{"class":5214,"line":6239},[5212,13528,13529],{"class":5469},"      console",[5212,13531,5314],{"class":5356},[5212,13533,13534],{"class":5475},"warn",[5212,13536,5479],{"class":5356},[5212,13538,13539],{"class":5384},"`Transaction failed (attempt ",[5212,13541,7274],{"class":5349},[5212,13543,13392],{"class":5469},[5212,13545,7284],{"class":5349},[5212,13547,12543],{"class":5384},[5212,13549,7274],{"class":5349},[5212,13551,13398],{"class":5469},[5212,13553,7284],{"class":5349},[5212,13555,13556],{"class":5384},"), retrying in ",[5212,13558,7274],{"class":5349},[5212,13560,13561],{"class":5469},"delay",[5212,13563,7284],{"class":5349},[5212,13565,13566],{"class":5384},"ms...`",[5212,13568,5656],{"class":5356},[5212,13570,13571,13573,13575,13577,13579,13582,13585,13588,13590,13592,13594,13596,13598,13600],{"class":5214,"line":6244},[5212,13572,7308],{"class":5465},[5212,13574,6956],{"class":5349},[5212,13576,13329],{"class":7450},[5212,13578,5479],{"class":5356},[5212,13580,13581],{"class":5469},"resolve",[5212,13583,13584],{"class":5349}," =>",[5212,13586,13587],{"class":5475}," setTimeout",[5212,13589,5479],{"class":5356},[5212,13591,13581],{"class":5469},[5212,13593,5888],{"class":5356},[5212,13595,13561],{"class":5469},[5212,13597,7090],{"class":5356},[5212,13599,13392],{"class":5469},[5212,13601,13602],{"class":5356},"));\n",[5212,13604,13605],{"class":5214,"line":6250},[5212,13606,7342],{"class":5356},[5212,13608,13609],{"class":5214,"line":6738},[5212,13610,6971],{"class":5356},[5212,13612,13613],{"class":5214,"line":6743},[5212,13614,7396],{"class":5356},[5212,13616,13617],{"class":5214,"line":6748},[5212,13618,5662],{"emptyLinePlaceholder":5661},[5212,13620,13621],{"class":5214,"line":6754},[5212,13622,13623],{"class":5547},"\u002F\u002F Використання\n",[5212,13625,13626,13628,13630,13632,13634,13636,13638],{"class":5214,"line":6772},[5212,13627,5466],{"class":5465},[5212,13629,13308],{"class":5475},[5212,13631,5479],{"class":5356},[5212,13633,5482],{"class":5349},[5212,13635,5536],{"class":5356},[5212,13637,5494],{"class":5349},[5212,13639,5497],{"class":5356},[5212,13641,13642,13645,13647,13649,13651,13653,13655,13657,13659,13661,13663],{"class":5214,"line":6785},[5212,13643,13644],{"class":5465},"  return",[5212,13646,5470],{"class":5469},[5212,13648,5314],{"class":5356},[5212,13650,5476],{"class":5475},[5212,13652,5479],{"class":5356},[5212,13654,5482],{"class":5349},[5212,13656,5485],{"class":5356},[5212,13658,5488],{"class":5469},[5212,13660,5491],{"class":5356},[5212,13662,5494],{"class":5349},[5212,13664,5497],{"class":5356},[5212,13666,13667],{"class":5214,"line":6799},[5212,13668,13669],{"class":5547},"    \u002F\u002F Критична операція\n",[5212,13671,13672],{"class":5214,"line":6804},[5212,13673,6050],{"class":5356},[5212,13675,13676],{"class":5214,"line":7914},[5212,13677,5597],{"class":5356},[5185,13679,13681],{"id":13680},"graceful-degradation","Graceful degradation",[5190,13683,13684],{},"У разі помилки транзакції надайте користувачу зрозуміле повідомлення:",[5204,13686,13688],{"className":5456,"code":13687,"language":5458,"meta":5208,"style":5208},"try {\n  await this.transferMoney(fromAccountId, toAccountId, amount);\n  return { success: true, message: 'Transfer completed' };\n} catch (error) {\n  if (error.message.includes('insufficient balance')) {\n    return { success: false, message: 'Insufficient balance' };\n  }\n  if (error.code === '40P01') {\n    return { success: false, message: 'Operation is temporarily unavailable, please try again' };\n  }\n  throw error; \u002F\u002F Unexpected error\n}\n",[5110,13689,13690,13696,13721,13743,13755,13779,13798,13802,13820,13839,13843,13854],{"__ignoreMap":5208},[5212,13691,13692,13694],{"class":5214,"line":5215},[5212,13693,7142],{"class":5465},[5212,13695,5497],{"class":5356},[5212,13697,13698,13700,13702,13704,13707,13709,13711,13713,13715,13717,13719],{"class":5214,"line":5221},[5212,13699,5502],{"class":5465},[5212,13701,7702],{"class":5349},[5212,13703,5314],{"class":5356},[5212,13705,13706],{"class":5475},"transferMoney",[5212,13708,5479],{"class":5356},[5212,13710,8444],{"class":5469},[5212,13712,5888],{"class":5356},[5212,13714,8454],{"class":5469},[5212,13716,5888],{"class":5356},[5212,13718,8463],{"class":5469},[5212,13720,5656],{"class":5356},[5212,13722,13723,13725,13727,13730,13732,13734,13737,13740],{"class":5214,"line":5227},[5212,13724,13644],{"class":5465},[5212,13726,6893],{"class":5356},[5212,13728,13729],{"class":5469},"success:",[5212,13731,6733],{"class":5349},[5212,13733,5888],{"class":5356},[5212,13735,13736],{"class":5469},"message:",[5212,13738,13739],{"class":5384}," 'Transfer completed'",[5212,13741,13742],{"class":5356}," };\n",[5212,13744,13745,13747,13749,13751,13753],{"class":5214,"line":5233},[5212,13746,7351],{"class":5356},[5212,13748,7354],{"class":5465},[5212,13750,5485],{"class":5356},[5212,13752,7359],{"class":5469},[5212,13754,6948],{"class":5356},[5212,13756,13757,13759,13761,13763,13765,13767,13769,13772,13774,13777],{"class":5214,"line":5239},[5212,13758,6939],{"class":5465},[5212,13760,5485],{"class":5356},[5212,13762,7359],{"class":5469},[5212,13764,5314],{"class":5356},[5212,13766,7384],{"class":5469},[5212,13768,5314],{"class":5356},[5212,13770,13771],{"class":5475},"includes",[5212,13773,5479],{"class":5356},[5212,13775,13776],{"class":5384},"'insufficient balance'",[5212,13778,7257],{"class":5356},[5212,13780,13781,13783,13785,13787,13789,13791,13793,13796],{"class":5214,"line":5245},[5212,13782,7699],{"class":5465},[5212,13784,6893],{"class":5356},[5212,13786,13729],{"class":5469},[5212,13788,9558],{"class":5349},[5212,13790,5888],{"class":5356},[5212,13792,13736],{"class":5469},[5212,13794,13795],{"class":5384}," 'Insufficient balance'",[5212,13797,13742],{"class":5356},[5212,13799,13800],{"class":5214,"line":5251},[5212,13801,6971],{"class":5356},[5212,13803,13804,13806,13808,13810,13812,13814,13816,13818],{"class":5214,"line":5257},[5212,13805,6939],{"class":5465},[5212,13807,5485],{"class":5356},[5212,13809,7359],{"class":5469},[5212,13811,5314],{"class":5356},[5212,13813,5110],{"class":5469},[5212,13815,13458],{"class":5356},[5212,13817,13479],{"class":5384},[5212,13819,6948],{"class":5356},[5212,13821,13822,13824,13826,13828,13830,13832,13834,13837],{"class":5214,"line":5263},[5212,13823,7699],{"class":5465},[5212,13825,6893],{"class":5356},[5212,13827,13729],{"class":5469},[5212,13829,9558],{"class":5349},[5212,13831,5888],{"class":5356},[5212,13833,13736],{"class":5469},[5212,13835,13836],{"class":5384}," 'Operation is temporarily unavailable, please try again'",[5212,13838,13742],{"class":5356},[5212,13840,13841],{"class":5214,"line":5269},[5212,13842,6971],{"class":5356},[5212,13844,13845,13847,13849,13851],{"class":5214,"line":5275},[5212,13846,10292],{"class":5465},[5212,13848,10295],{"class":5469},[5212,13850,12871],{"class":5356},[5212,13852,13853],{"class":5547},"\u002F\u002F Unexpected error\n",[5212,13855,13856],{"class":5214,"line":5281},[5212,13857,7396],{"class":5356},[5177,13859],{},[5180,13861,13863],{"id":13862},"deadlocks-та-як-їх-уникнути","Deadlocks та як їх уникнути",[5185,13865,13867],{"id":13866},"що-таке-deadlock","Що таке deadlock",[5190,13869,13870,13873],{},[5136,13871,13872],{},"Deadlock (взаємне блокування)"," — це ситуація, коли дві або більше транзакцій чекають на звільнення ресурсів, заблокованих одна одною, що призводить до нескінченного очікування.",[5190,13875,13876],{},[5136,13877,13878],{},"Приклад deadlock:",[5204,13880,13882],{"className":5456,"code":13881,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1\nBEGIN;\nUPDATE accounts SET balance = balance - 100 WHERE id = 1;  -- Блокує рядок 1\n-- (чекає на блокування рядка 2)\nUPDATE accounts SET balance = balance + 100 WHERE id = 2;\n\n\u002F\u002F Транзакція 2 (одночасно)\nBEGIN;\nUPDATE accounts SET balance = balance - 50 WHERE id = 2;   -- Блокує рядок 2\n-- (чекає на блокування рядка 1)\nUPDATE accounts SET balance = balance + 50 WHERE id = 1;\n\n-- ❌ DEADLOCK: обидві транзакції чекають одна на одну!\n",[5110,13883,13884,13888,13894,13931,13951,13980,13984,13989,13995,14032,14048,14076,14080],{"__ignoreMap":5208},[5212,13885,13886],{"class":5214,"line":5215},[5212,13887,11832],{"class":5547},[5212,13889,13890,13892],{"class":5214,"line":5221},[5212,13891,5350],{"class":5744},[5212,13893,5357],{"class":5356},[5212,13895,13896,13898,13900,13902,13904,13906,13908,13910,13912,13914,13916,13918,13920,13922,13925,13928],{"class":5214,"line":5227},[5212,13897,5362],{"class":5744},[5212,13899,5753],{"class":5469},[5212,13901,5756],{"class":5744},[5212,13903,5759],{"class":5469},[5212,13905,5762],{"class":5356},[5212,13907,5530],{"class":5469},[5212,13909,5767],{"class":5356},[5212,13911,5375],{"class":5374},[5212,13913,5378],{"class":5744},[5212,13915,5774],{"class":5469},[5212,13917,5762],{"class":5356},[5212,13919,6234],{"class":5374},[5212,13921,11859],{"class":5356},[5212,13923,13924],{"class":5469},"Блокує",[5212,13926,13927],{"class":5469}," рядок",[5212,13929,13930],{"class":5374}," 1\n",[5212,13932,13933,13935,13938,13941,13944,13947,13949],{"class":5214,"line":5233},[5212,13934,5788],{"class":5356},[5212,13936,13937],{"class":5469},"чекає",[5212,13939,13940],{"class":5469}," на",[5212,13942,13943],{"class":5469}," блокування",[5212,13945,13946],{"class":5469}," рядка",[5212,13948,6108],{"class":5374},[5212,13950,5797],{"class":5356},[5212,13952,13953,13955,13957,13959,13961,13963,13965,13968,13970,13972,13974,13976,13978],{"class":5214,"line":5239},[5212,13954,5362],{"class":5744},[5212,13956,5753],{"class":5469},[5212,13958,5756],{"class":5744},[5212,13960,5759],{"class":5469},[5212,13962,5762],{"class":5356},[5212,13964,5530],{"class":5469},[5212,13966,13967],{"class":5356}," + ",[5212,13969,5375],{"class":5374},[5212,13971,5378],{"class":5744},[5212,13973,5774],{"class":5469},[5212,13975,5762],{"class":5356},[5212,13977,6202],{"class":5374},[5212,13979,5357],{"class":5356},[5212,13981,13982],{"class":5214,"line":5245},[5212,13983,5662],{"emptyLinePlaceholder":5661},[5212,13985,13986],{"class":5214,"line":5251},[5212,13987,13988],{"class":5547},"\u002F\u002F Транзакція 2 (одночасно)\n",[5212,13990,13991,13993],{"class":5214,"line":5257},[5212,13992,5350],{"class":5744},[5212,13994,5357],{"class":5356},[5212,13996,13997,13999,14001,14003,14005,14007,14009,14011,14014,14016,14018,14020,14022,14025,14027,14029],{"class":5214,"line":5263},[5212,13998,5362],{"class":5744},[5212,14000,5753],{"class":5469},[5212,14002,5756],{"class":5744},[5212,14004,5759],{"class":5469},[5212,14006,5762],{"class":5356},[5212,14008,5530],{"class":5469},[5212,14010,5767],{"class":5356},[5212,14012,14013],{"class":5374},"50",[5212,14015,5378],{"class":5744},[5212,14017,5774],{"class":5469},[5212,14019,5762],{"class":5356},[5212,14021,6202],{"class":5374},[5212,14023,14024],{"class":5356},";   -- ",[5212,14026,13924],{"class":5469},[5212,14028,13927],{"class":5469},[5212,14030,14031],{"class":5374}," 2\n",[5212,14033,14034,14036,14038,14040,14042,14044,14046],{"class":5214,"line":5269},[5212,14035,5788],{"class":5356},[5212,14037,13937],{"class":5469},[5212,14039,13940],{"class":5469},[5212,14041,13943],{"class":5469},[5212,14043,13946],{"class":5469},[5212,14045,6022],{"class":5374},[5212,14047,5797],{"class":5356},[5212,14049,14050,14052,14054,14056,14058,14060,14062,14064,14066,14068,14070,14072,14074],{"class":5214,"line":5275},[5212,14051,5362],{"class":5744},[5212,14053,5753],{"class":5469},[5212,14055,5756],{"class":5744},[5212,14057,5759],{"class":5469},[5212,14059,5762],{"class":5356},[5212,14061,5530],{"class":5469},[5212,14063,13967],{"class":5356},[5212,14065,14013],{"class":5374},[5212,14067,5378],{"class":5744},[5212,14069,5774],{"class":5469},[5212,14071,5762],{"class":5356},[5212,14073,6234],{"class":5374},[5212,14075,5357],{"class":5356},[5212,14077,14078],{"class":5214,"line":5281},[5212,14079,5662],{"emptyLinePlaceholder":5661},[5212,14081,14082,14085,14088,14090,14093,14096,14099,14102,14104,14107],{"class":5214,"line":5287},[5212,14083,14084],{"class":5356},"-- ❌ ",[5212,14086,14087],{"class":12516},"DEADLOCK",[5212,14089,7447],{"class":5356},[5212,14091,14092],{"class":5469},"обидві",[5212,14094,14095],{"class":5469}," транзакції",[5212,14097,14098],{"class":5469}," чекають",[5212,14100,14101],{"class":5469}," одна",[5212,14103,13940],{"class":5469},[5212,14105,14106],{"class":5469}," одну",[5212,14108,11726],{"class":5356},[5190,14110,14111,14114],{},[5136,14112,14113],{},"PostgreSQL автоматично виявляє deadlock"," та відкочує одну з транзакцій:",[5204,14116,14121],{"className":14117,"code":14119,"language":14120},[14118],"language-text","ERROR: deadlock detected\nDETAIL: Process 1234 waits for ShareLock on transaction 5678; blocked by process 5678.\nProcess 5678 waits for ShareLock on transaction 1234; blocked by process 1234.\n","text",[5110,14122,14119],{"__ignoreMap":5208},[5185,14124,14126],{"id":14125},"причини-виникнення","Причини виникнення",[5190,14128,14129],{},[5136,14130,14131],{},"1. Невпорядковане блокування ресурсів:",[5190,14133,14134,14135,5314],{},"Дві транзакції блокують ресурси у ",[5136,14136,14137],{},"різному порядку",[5190,14139,14140],{},[5136,14141,14142],{},"2. Довгі транзакції:",[5190,14144,14145],{},"Транзакції тримають блокування надто довго, збільшуючи ймовірність конфлікту.",[5190,14147,14148],{},[5136,14149,14150],{},"3. Високий рівень конкуренції:",[5190,14152,14153],{},"Багато транзакцій одночасно змінюють ті самі записи.",[5185,14155,14157],{"id":14156},"стратегії-уникнення","Стратегії уникнення",[5190,14159,14160],{},[5136,14161,14162],{},"1. Впорядковане блокування:",[5190,14164,14165,14166,14169],{},"Завжди блокуйте ресурси у ",[5136,14167,14168],{},"одному порядку"," (наприклад, за зростанням ID).",[5204,14171,14173],{"className":5456,"code":14172,"language":5458,"meta":5208,"style":5208},"\u002F\u002F ✅ ПРАВИЛЬНО: блокування у порядку зростання ID\nasync transferMoney(fromId: number, toId: number, amount: number) {\n  await dataSource.transaction(async (manager) => {\n    const [firstId, secondId] = fromId \u003C toId ? [fromId, toId] : [toId, fromId];\n\n    \u002F\u002F Блокуємо рахунки у порядку зростання ID\n    const account1 = await manager.findOne(Account, {\n      where: { id: firstId },\n      lock: { mode: 'pessimistic_write' },\n    });\n\n    const account2 = await manager.findOne(Account, {\n      where: { id: secondId },\n      lock: { mode: 'pessimistic_write' },\n    });\n\n    \u002F\u002F Виконуємо переказ\n    if (fromId === firstId) {\n      await manager.decrement(Account, { id: fromId }, 'balance', amount);\n      await manager.increment(Account, { id: toId }, 'balance', amount);\n    } else {\n      await manager.decrement(Account, { id: fromId }, 'balance', amount);\n      await manager.increment(Account, { id: toId }, 'balance', amount);\n    }\n  });\n}\n",[5110,14174,14175,14180,14214,14238,14283,14287,14292,14315,14329,14342,14346,14350,14373,14386,14398,14402,14406,14411,14425,14456,14487,14496,14526,14556,14560,14564],{"__ignoreMap":5208},[5212,14176,14177],{"class":5214,"line":5215},[5212,14178,14179],{"class":5547},"\u002F\u002F ✅ ПРАВИЛЬНО: блокування у порядку зростання ID\n",[5212,14181,14182,14184,14186,14188,14191,14193,14195,14197,14200,14202,14204,14206,14208,14210,14212],{"class":5214,"line":5221},[5212,14183,5482],{"class":5469},[5212,14185,8439],{"class":5475},[5212,14187,5479],{"class":5356},[5212,14189,14190],{"class":5469},"fromId",[5212,14192,7447],{"class":5356},[5212,14194,8449],{"class":5469},[5212,14196,5888],{"class":5356},[5212,14198,14199],{"class":5469},"toId",[5212,14201,7447],{"class":5356},[5212,14203,8449],{"class":5469},[5212,14205,5888],{"class":5356},[5212,14207,8463],{"class":5469},[5212,14209,7447],{"class":5356},[5212,14211,8449],{"class":5469},[5212,14213,6948],{"class":5356},[5212,14215,14216,14218,14220,14222,14224,14226,14228,14230,14232,14234,14236],{"class":5214,"line":5227},[5212,14217,5502],{"class":5465},[5212,14219,5470],{"class":5469},[5212,14221,5314],{"class":5356},[5212,14223,5476],{"class":5475},[5212,14225,5479],{"class":5356},[5212,14227,5482],{"class":5349},[5212,14229,5485],{"class":5356},[5212,14231,5488],{"class":5469},[5212,14233,5491],{"class":5356},[5212,14235,5494],{"class":5349},[5212,14237,5497],{"class":5356},[5212,14239,14240,14242,14245,14248,14250,14253,14256,14258,14260,14262,14265,14267,14269,14271,14274,14276,14278,14280],{"class":5214,"line":5233},[5212,14241,7173],{"class":5349},[5212,14243,14244],{"class":5356}," [",[5212,14246,14247],{"class":5744},"firstId",[5212,14249,5888],{"class":5356},[5212,14251,14252],{"class":5744},"secondId",[5212,14254,14255],{"class":5356},"] = ",[5212,14257,14190],{"class":5469},[5212,14259,11097],{"class":5356},[5212,14261,14199],{"class":5469},[5212,14263,14264],{"class":5356}," ? [",[5212,14266,14190],{"class":5469},[5212,14268,5888],{"class":5356},[5212,14270,14199],{"class":5469},[5212,14272,14273],{"class":5356},"] : [",[5212,14275,14199],{"class":5469},[5212,14277,5888],{"class":5356},[5212,14279,14190],{"class":5469},[5212,14281,14282],{"class":5356},"];\n",[5212,14284,14285],{"class":5214,"line":5239},[5212,14286,5662],{"emptyLinePlaceholder":5661},[5212,14288,14289],{"class":5214,"line":5245},[5212,14290,14291],{"class":5547},"    \u002F\u002F Блокуємо рахунки у порядку зростання ID\n",[5212,14293,14294,14296,14299,14301,14303,14305,14307,14309,14311,14313],{"class":5214,"line":5251},[5212,14295,7173],{"class":5349},[5212,14297,14298],{"class":5744}," account1",[5212,14300,5762],{"class":5356},[5212,14302,5466],{"class":5465},[5212,14304,5505],{"class":5469},[5212,14306,5314],{"class":5356},[5212,14308,6878],{"class":5475},[5212,14310,5479],{"class":5356},[5212,14312,5515],{"class":5469},[5212,14314,6014],{"class":5356},[5212,14316,14317,14320,14322,14324,14327],{"class":5214,"line":5257},[5212,14318,14319],{"class":5469},"      where:",[5212,14321,6893],{"class":5356},[5212,14323,5521],{"class":5469},[5212,14325,14326],{"class":5469}," firstId",[5212,14328,6119],{"class":5356},[5212,14330,14331,14334,14336,14338,14340],{"class":5214,"line":5263},[5212,14332,14333],{"class":5469},"      lock:",[5212,14335,6893],{"class":5356},[5212,14337,6918],{"class":5469},[5212,14339,6921],{"class":5384},[5212,14341,6119],{"class":5356},[5212,14343,14344],{"class":5214,"line":5269},[5212,14345,7911],{"class":5356},[5212,14347,14348],{"class":5214,"line":5275},[5212,14349,5662],{"emptyLinePlaceholder":5661},[5212,14351,14352,14354,14357,14359,14361,14363,14365,14367,14369,14371],{"class":5214,"line":5281},[5212,14353,7173],{"class":5349},[5212,14355,14356],{"class":5744}," account2",[5212,14358,5762],{"class":5356},[5212,14360,5466],{"class":5465},[5212,14362,5505],{"class":5469},[5212,14364,5314],{"class":5356},[5212,14366,6878],{"class":5475},[5212,14368,5479],{"class":5356},[5212,14370,5515],{"class":5469},[5212,14372,6014],{"class":5356},[5212,14374,14375,14377,14379,14381,14384],{"class":5214,"line":5287},[5212,14376,14319],{"class":5469},[5212,14378,6893],{"class":5356},[5212,14380,5521],{"class":5469},[5212,14382,14383],{"class":5469}," secondId",[5212,14385,6119],{"class":5356},[5212,14387,14388,14390,14392,14394,14396],{"class":5214,"line":5293},[5212,14389,14333],{"class":5469},[5212,14391,6893],{"class":5356},[5212,14393,6918],{"class":5469},[5212,14395,6921],{"class":5384},[5212,14397,6119],{"class":5356},[5212,14399,14400],{"class":5214,"line":6165},[5212,14401,7911],{"class":5356},[5212,14403,14404],{"class":5214,"line":6171},[5212,14405,5662],{"emptyLinePlaceholder":5661},[5212,14407,14408],{"class":5214,"line":6207},[5212,14409,14410],{"class":5547},"    \u002F\u002F Виконуємо переказ\n",[5212,14412,14413,14415,14417,14419,14421,14423],{"class":5214,"line":6239},[5212,14414,8565],{"class":5465},[5212,14416,5485],{"class":5356},[5212,14418,14190],{"class":5469},[5212,14420,13458],{"class":5356},[5212,14422,14247],{"class":5469},[5212,14424,6948],{"class":5356},[5212,14426,14427,14429,14431,14433,14435,14437,14439,14441,14443,14446,14448,14450,14452,14454],{"class":5214,"line":6244},[5212,14428,7308],{"class":5465},[5212,14430,5505],{"class":5469},[5212,14432,5314],{"class":5356},[5212,14434,6180],{"class":5475},[5212,14436,5479],{"class":5356},[5212,14438,5515],{"class":5469},[5212,14440,5518],{"class":5356},[5212,14442,5521],{"class":5469},[5212,14444,14445],{"class":5469}," fromId",[5212,14447,6194],{"class":5356},[5212,14449,6413],{"class":5384},[5212,14451,5888],{"class":5356},[5212,14453,8463],{"class":5469},[5212,14455,5656],{"class":5356},[5212,14457,14458,14460,14462,14464,14466,14468,14470,14472,14474,14477,14479,14481,14483,14485],{"class":5214,"line":6250},[5212,14459,7308],{"class":5465},[5212,14461,5505],{"class":5469},[5212,14463,5314],{"class":5356},[5212,14465,6397],{"class":5475},[5212,14467,5479],{"class":5356},[5212,14469,5515],{"class":5469},[5212,14471,5518],{"class":5356},[5212,14473,5521],{"class":5469},[5212,14475,14476],{"class":5469}," toId",[5212,14478,6194],{"class":5356},[5212,14480,6413],{"class":5384},[5212,14482,5888],{"class":5356},[5212,14484,8463],{"class":5469},[5212,14486,5656],{"class":5356},[5212,14488,14489,14491,14494],{"class":5214,"line":6738},[5212,14490,13428],{"class":5356},[5212,14492,14493],{"class":5465},"else",[5212,14495,5497],{"class":5356},[5212,14497,14498,14500,14502,14504,14506,14508,14510,14512,14514,14516,14518,14520,14522,14524],{"class":5214,"line":6743},[5212,14499,7308],{"class":5465},[5212,14501,5505],{"class":5469},[5212,14503,5314],{"class":5356},[5212,14505,6180],{"class":5475},[5212,14507,5479],{"class":5356},[5212,14509,5515],{"class":5469},[5212,14511,5518],{"class":5356},[5212,14513,5521],{"class":5469},[5212,14515,14445],{"class":5469},[5212,14517,6194],{"class":5356},[5212,14519,6413],{"class":5384},[5212,14521,5888],{"class":5356},[5212,14523,8463],{"class":5469},[5212,14525,5656],{"class":5356},[5212,14527,14528,14530,14532,14534,14536,14538,14540,14542,14544,14546,14548,14550,14552,14554],{"class":5214,"line":6748},[5212,14529,7308],{"class":5465},[5212,14531,5505],{"class":5469},[5212,14533,5314],{"class":5356},[5212,14535,6397],{"class":5475},[5212,14537,5479],{"class":5356},[5212,14539,5515],{"class":5469},[5212,14541,5518],{"class":5356},[5212,14543,5521],{"class":5469},[5212,14545,14476],{"class":5469},[5212,14547,6194],{"class":5356},[5212,14549,6413],{"class":5384},[5212,14551,5888],{"class":5356},[5212,14553,8463],{"class":5469},[5212,14555,5656],{"class":5356},[5212,14557,14558],{"class":5214,"line":6754},[5212,14559,7342],{"class":5356},[5212,14561,14562],{"class":5214,"line":6772},[5212,14563,6050],{"class":5356},[5212,14565,14566],{"class":5214,"line":6785},[5212,14567,7396],{"class":5356},[5190,14569,14570],{},[5136,14571,14572],{},"2. Мінімізація часу транзакції:",[5190,14574,14575,14576,5314],{},"Виносьте повільні операції (HTTP запити, обробка файлів) ",[5136,14577,14578],{},"за межі транзакції",[5204,14580,14582],{"className":5456,"code":14581,"language":5458,"meta":5208,"style":5208},"\u002F\u002F ❌ ПОГАНО: HTTP запит всередині транзакції\nawait dataSource.transaction(async (manager) => {\n  await manager.save(Order, orderData);\n  await sendEmail(user.email, 'Order created'); \u002F\u002F ⚠️ Повільна операція!\n});\n\n\u002F\u002F ✅ ДОБРЕ: HTTP запит після транзакції\nconst order = await dataSource.transaction(async (manager) => {\n  return manager.save(Order, orderData);\n});\nawait sendEmail(user.email, 'Order created'); \u002F\u002F ✅ Після commit\n",[5110,14583,14584,14589,14613,14633,14658,14662,14666,14671,14701,14721,14725],{"__ignoreMap":5208},[5212,14585,14586],{"class":5214,"line":5215},[5212,14587,14588],{"class":5547},"\u002F\u002F ❌ ПОГАНО: HTTP запит всередині транзакції\n",[5212,14590,14591,14593,14595,14597,14599,14601,14603,14605,14607,14609,14611],{"class":5214,"line":5221},[5212,14592,5466],{"class":5465},[5212,14594,5470],{"class":5469},[5212,14596,5314],{"class":5356},[5212,14598,5476],{"class":5475},[5212,14600,5479],{"class":5356},[5212,14602,5482],{"class":5349},[5212,14604,5485],{"class":5356},[5212,14606,5488],{"class":5469},[5212,14608,5491],{"class":5356},[5212,14610,5494],{"class":5349},[5212,14612,5497],{"class":5356},[5212,14614,14615,14617,14619,14621,14623,14625,14627,14629,14631],{"class":5214,"line":5227},[5212,14616,5502],{"class":5465},[5212,14618,5505],{"class":5469},[5212,14620,5314],{"class":5356},[5212,14622,6006],{"class":5475},[5212,14624,5479],{"class":5356},[5212,14626,6011],{"class":5469},[5212,14628,5888],{"class":5356},[5212,14630,10831],{"class":5469},[5212,14632,5656],{"class":5356},[5212,14634,14635,14637,14640,14642,14644,14646,14648,14650,14653,14655],{"class":5214,"line":5233},[5212,14636,5502],{"class":5465},[5212,14638,14639],{"class":5475}," sendEmail",[5212,14641,5479],{"class":5356},[5212,14643,7249],{"class":5469},[5212,14645,5314],{"class":5356},[5212,14647,7254],{"class":5469},[5212,14649,5888],{"class":5356},[5212,14651,14652],{"class":5384},"'Order created'",[5212,14654,9020],{"class":5356},[5212,14656,14657],{"class":5547},"\u002F\u002F ⚠️ Повільна операція!\n",[5212,14659,14660],{"class":5214,"line":5239},[5212,14661,5597],{"class":5356},[5212,14663,14664],{"class":5214,"line":5245},[5212,14665,5662],{"emptyLinePlaceholder":5661},[5212,14667,14668],{"class":5214,"line":5251},[5212,14669,14670],{"class":5547},"\u002F\u002F ✅ ДОБРЕ: HTTP запит після транзакції\n",[5212,14672,14673,14675,14677,14679,14681,14683,14685,14687,14689,14691,14693,14695,14697,14699],{"class":5214,"line":5257},[5212,14674,7220],{"class":5349},[5212,14676,5995],{"class":5744},[5212,14678,5762],{"class":5356},[5212,14680,5466],{"class":5465},[5212,14682,5470],{"class":5469},[5212,14684,5314],{"class":5356},[5212,14686,5476],{"class":5475},[5212,14688,5479],{"class":5356},[5212,14690,5482],{"class":5349},[5212,14692,5485],{"class":5356},[5212,14694,5488],{"class":5469},[5212,14696,5491],{"class":5356},[5212,14698,5494],{"class":5349},[5212,14700,5497],{"class":5356},[5212,14702,14703,14705,14707,14709,14711,14713,14715,14717,14719],{"class":5214,"line":5263},[5212,14704,13644],{"class":5465},[5212,14706,5505],{"class":5469},[5212,14708,5314],{"class":5356},[5212,14710,6006],{"class":5475},[5212,14712,5479],{"class":5356},[5212,14714,6011],{"class":5469},[5212,14716,5888],{"class":5356},[5212,14718,10831],{"class":5469},[5212,14720,5656],{"class":5356},[5212,14722,14723],{"class":5214,"line":5269},[5212,14724,5597],{"class":5356},[5212,14726,14727,14729,14731,14733,14735,14737,14739,14741,14743,14745],{"class":5214,"line":5275},[5212,14728,5466],{"class":5465},[5212,14730,14639],{"class":5475},[5212,14732,5479],{"class":5356},[5212,14734,7249],{"class":5469},[5212,14736,5314],{"class":5356},[5212,14738,7254],{"class":5469},[5212,14740,5888],{"class":5356},[5212,14742,14652],{"class":5384},[5212,14744,9020],{"class":5356},[5212,14746,14747],{"class":5547},"\u002F\u002F ✅ Після commit\n",[5190,14749,14750],{},[5136,14751,14752],{},"3. Використання оптимістичного блокування:",[5190,14754,14755,14756,14759],{},"Замість блокування рядків використовуйте ",[5136,14757,14758],{},"versioning"," для виявлення конфліктів.",[5204,14761,14763],{"className":5456,"code":14762,"language":5458,"meta":5208,"style":5208},"@Entity()\nexport class Account {\n  @PrimaryGeneratedColumn()\n  id: number;\n\n  @Column('decimal')\n  balance: number;\n\n  @VersionColumn()\n  version: number; \u002F\u002F Автоматично інкрементується при кожному UPDATE\n}\n\n\u002F\u002F При конфлікті TypeORM кине OptimisticLockVersionMismatchError\n",[5110,14764,14765,14774,14785,14795,14806,14810,14824,14835,14839,14848,14862,14866,14870],{"__ignoreMap":5208},[5212,14766,14767,14769,14772],{"class":5214,"line":5215},[5212,14768,7618],{"class":5356},[5212,14770,14771],{"class":5475},"Entity",[5212,14773,7623],{"class":5356},[5212,14775,14776,14778,14780,14783],{"class":5214,"line":5221},[5212,14777,7628],{"class":5465},[5212,14779,7631],{"class":5349},[5212,14781,14782],{"class":7450}," Account",[5212,14784,5497],{"class":5356},[5212,14786,14787,14790,14793],{"class":5214,"line":5227},[5212,14788,14789],{"class":5356},"  @",[5212,14791,14792],{"class":5475},"PrimaryGeneratedColumn",[5212,14794,7623],{"class":5356},[5212,14796,14797,14800,14802,14804],{"class":5214,"line":5233},[5212,14798,14799],{"class":5469},"  id",[5212,14801,7447],{"class":5356},[5212,14803,8449],{"class":7450},[5212,14805,5357],{"class":5356},[5212,14807,14808],{"class":5214,"line":5239},[5212,14809,5662],{"emptyLinePlaceholder":5661},[5212,14811,14812,14814,14817,14819,14822],{"class":5214,"line":5245},[5212,14813,14789],{"class":5356},[5212,14815,14816],{"class":5475},"Column",[5212,14818,5479],{"class":5356},[5212,14820,14821],{"class":5384},"'decimal'",[5212,14823,5797],{"class":5356},[5212,14825,14826,14829,14831,14833],{"class":5214,"line":5251},[5212,14827,14828],{"class":5469},"  balance",[5212,14830,7447],{"class":5356},[5212,14832,8449],{"class":7450},[5212,14834,5357],{"class":5356},[5212,14836,14837],{"class":5214,"line":5257},[5212,14838,5662],{"emptyLinePlaceholder":5661},[5212,14840,14841,14843,14846],{"class":5214,"line":5263},[5212,14842,14789],{"class":5356},[5212,14844,14845],{"class":5475},"VersionColumn",[5212,14847,7623],{"class":5356},[5212,14849,14850,14853,14855,14857,14859],{"class":5214,"line":5269},[5212,14851,14852],{"class":5469},"  version",[5212,14854,7447],{"class":5356},[5212,14856,8449],{"class":7450},[5212,14858,12871],{"class":5356},[5212,14860,14861],{"class":5547},"\u002F\u002F Автоматично інкрементується при кожному UPDATE\n",[5212,14863,14864],{"class":5214,"line":5275},[5212,14865,7396],{"class":5356},[5212,14867,14868],{"class":5214,"line":5281},[5212,14869,5662],{"emptyLinePlaceholder":5661},[5212,14871,14872],{"class":5214,"line":5287},[5212,14873,14874],{"class":5547},"\u002F\u002F При конфлікті TypeORM кине OptimisticLockVersionMismatchError\n",[5185,14876,14878],{"id":14877},"порядок-блокування-ресурсів","Порядок блокування ресурсів",[5190,14880,14881,14883,14884,14887],{},[5136,14882,9055],{}," Завжди блокуйте ресурси у ",[5136,14885,14886],{},"фіксованому глобальному порядку"," (наприклад, за primary key).",[5190,14889,14890],{},[5136,14891,14892],{},"Приклад — переказ між рахунками:",[5204,14894,14896],{"className":5456,"code":14895,"language":5458,"meta":5208,"style":5208},"async function transfer(from: number, to: number, amount: number) {\n  const ids = [from, to].sort((a, b) => a - b); \u002F\u002F Сортуємо ID\n\n  await dataSource.transaction(async (manager) => {\n    \u002F\u002F Блокуємо у порядку зростання ID\n    for (const id of ids) {\n      await manager.findOne(Account, {\n        where: { id },\n        lock: { mode: 'pessimistic_write' },\n      });\n    }\n\n    \u002F\u002F Виконуємо переказ\n    await manager.decrement(Account, { id: from }, 'balance', amount);\n    await manager.increment(Account, { id: to }, 'balance', amount);\n  });\n}\n",[5110,14897,14898,14934,14983,14987,15011,15016,15032,15048,15058,15070,15074,15078,15082,15086,15117,15147,15151],{"__ignoreMap":5208},[5212,14899,14900,14902,14904,14907,14909,14911,14913,14915,14917,14920,14922,14924,14926,14928,14930,14932],{"class":5214,"line":5215},[5212,14901,5482],{"class":5349},[5212,14903,13305],{"class":5349},[5212,14905,14906],{"class":5475}," transfer",[5212,14908,5479],{"class":5356},[5212,14910,7552],{"class":5469},[5212,14912,7447],{"class":5356},[5212,14914,8449],{"class":7450},[5212,14916,5888],{"class":5356},[5212,14918,14919],{"class":5469},"to",[5212,14921,7447],{"class":5356},[5212,14923,8449],{"class":7450},[5212,14925,5888],{"class":5356},[5212,14927,8463],{"class":5469},[5212,14929,7447],{"class":5356},[5212,14931,8449],{"class":7450},[5212,14933,6948],{"class":5356},[5212,14935,14936,14938,14941,14944,14946,14948,14950,14953,14956,14959,14962,14964,14967,14969,14971,14974,14976,14978,14980],{"class":5214,"line":5221},[5212,14937,5992],{"class":5349},[5212,14939,14940],{"class":5744}," ids",[5212,14942,14943],{"class":5356}," = [",[5212,14945,7552],{"class":5469},[5212,14947,5888],{"class":5356},[5212,14949,14919],{"class":5469},[5212,14951,14952],{"class":5356},"].",[5212,14954,14955],{"class":5475},"sort",[5212,14957,14958],{"class":5356},"((",[5212,14960,14961],{"class":5469},"a",[5212,14963,5888],{"class":5356},[5212,14965,14966],{"class":5469},"b",[5212,14968,5491],{"class":5356},[5212,14970,5494],{"class":5349},[5212,14972,14973],{"class":5469}," a",[5212,14975,5767],{"class":5356},[5212,14977,14966],{"class":5469},[5212,14979,9020],{"class":5356},[5212,14981,14982],{"class":5547},"\u002F\u002F Сортуємо ID\n",[5212,14984,14985],{"class":5214,"line":5227},[5212,14986,5662],{"emptyLinePlaceholder":5661},[5212,14988,14989,14991,14993,14995,14997,14999,15001,15003,15005,15007,15009],{"class":5214,"line":5233},[5212,14990,5502],{"class":5465},[5212,14992,5470],{"class":5469},[5212,14994,5314],{"class":5356},[5212,14996,5476],{"class":5475},[5212,14998,5479],{"class":5356},[5212,15000,5482],{"class":5349},[5212,15002,5485],{"class":5356},[5212,15004,5488],{"class":5469},[5212,15006,5491],{"class":5356},[5212,15008,5494],{"class":5349},[5212,15010,5497],{"class":5356},[5212,15012,15013],{"class":5214,"line":5239},[5212,15014,15015],{"class":5547},"    \u002F\u002F Блокуємо у порядку зростання ID\n",[5212,15017,15018,15020,15022,15024,15026,15028,15030],{"class":5214,"line":5245},[5212,15019,7215],{"class":5465},[5212,15021,5485],{"class":5356},[5212,15023,7220],{"class":5349},[5212,15025,5774],{"class":5744},[5212,15027,7225],{"class":5349},[5212,15029,14940],{"class":5469},[5212,15031,6948],{"class":5356},[5212,15033,15034,15036,15038,15040,15042,15044,15046],{"class":5214,"line":5251},[5212,15035,7308],{"class":5465},[5212,15037,5505],{"class":5469},[5212,15039,5314],{"class":5356},[5212,15041,6878],{"class":5475},[5212,15043,5479],{"class":5356},[5212,15045,5515],{"class":5469},[5212,15047,6014],{"class":5356},[5212,15049,15050,15052,15054,15056],{"class":5214,"line":5257},[5212,15051,11041],{"class":5469},[5212,15053,6893],{"class":5356},[5212,15055,6092],{"class":5469},[5212,15057,6119],{"class":5356},[5212,15059,15060,15062,15064,15066,15068],{"class":5214,"line":5263},[5212,15061,11059],{"class":5469},[5212,15063,6893],{"class":5356},[5212,15065,6918],{"class":5469},[5212,15067,6921],{"class":5384},[5212,15069,6119],{"class":5356},[5212,15071,15072],{"class":5214,"line":5269},[5212,15073,7785],{"class":5356},[5212,15075,15076],{"class":5214,"line":5275},[5212,15077,7342],{"class":5356},[5212,15079,15080],{"class":5214,"line":5281},[5212,15081,5662],{"emptyLinePlaceholder":5661},[5212,15083,15084],{"class":5214,"line":5287},[5212,15085,14410],{"class":5547},[5212,15087,15088,15090,15092,15094,15096,15098,15100,15102,15104,15107,15109,15111,15113,15115],{"class":5214,"line":5293},[5212,15089,8060],{"class":5465},[5212,15091,5505],{"class":5469},[5212,15093,5314],{"class":5356},[5212,15095,6180],{"class":5475},[5212,15097,5479],{"class":5356},[5212,15099,5515],{"class":5469},[5212,15101,5518],{"class":5356},[5212,15103,5521],{"class":5469},[5212,15105,15106],{"class":5469}," from",[5212,15108,6194],{"class":5356},[5212,15110,6413],{"class":5384},[5212,15112,5888],{"class":5356},[5212,15114,8463],{"class":5469},[5212,15116,5656],{"class":5356},[5212,15118,15119,15121,15123,15125,15127,15129,15131,15133,15135,15137,15139,15141,15143,15145],{"class":5214,"line":6165},[5212,15120,8060],{"class":5465},[5212,15122,5505],{"class":5469},[5212,15124,5314],{"class":5356},[5212,15126,6397],{"class":5475},[5212,15128,5479],{"class":5356},[5212,15130,5515],{"class":5469},[5212,15132,5518],{"class":5356},[5212,15134,5521],{"class":5469},[5212,15136,12537],{"class":5469},[5212,15138,6194],{"class":5356},[5212,15140,6413],{"class":5384},[5212,15142,5888],{"class":5356},[5212,15144,8463],{"class":5469},[5212,15146,5656],{"class":5356},[5212,15148,15149],{"class":5214,"line":6171},[5212,15150,6050],{"class":5356},[5212,15152,15153],{"class":5214,"line":6207},[5212,15154,7396],{"class":5356},[5185,15156,15158],{"id":15157},"timeout-налаштування","Timeout налаштування",[5190,15160,15161,15162,15165],{},"Налаштуйте ",[5136,15163,15164],{},"lock timeout"," для автоматичного відкату транзакцій, що чекають надто довго:",[5204,15167,15169],{"className":5456,"code":15168,"language":5458,"meta":5208,"style":5208},"await queryRunner.query('SET lock_timeout = 5000'); \u002F\u002F 5 секунд\nawait queryRunner.startTransaction();\n\ntry {\n  \u002F\u002F Операції\n} catch (error) {\n  if (error.code === '55P03') { \u002F\u002F Lock timeout\n    console.warn('Lock timeout exceeded, retrying...');\n  }\n}\n",[5110,15170,15171,15192,15204,15208,15214,15219,15231,15254,15270,15274],{"__ignoreMap":5208},[5212,15172,15173,15175,15177,15179,15182,15184,15187,15189],{"class":5214,"line":5215},[5212,15174,5466],{"class":5465},[5212,15176,10043],{"class":5469},[5212,15178,5314],{"class":5356},[5212,15180,15181],{"class":5475},"query",[5212,15183,5479],{"class":5356},[5212,15185,15186],{"class":5384},"'SET lock_timeout = 5000'",[5212,15188,9020],{"class":5356},[5212,15190,15191],{"class":5547},"\u002F\u002F 5 секунд\n",[5212,15193,15194,15196,15198,15200,15202],{"class":5214,"line":5221},[5212,15195,5466],{"class":5465},[5212,15197,10043],{"class":5469},[5212,15199,5314],{"class":5356},[5212,15201,10166],{"class":5475},[5212,15203,9460],{"class":5356},[5212,15205,15206],{"class":5214,"line":5227},[5212,15207,5662],{"emptyLinePlaceholder":5661},[5212,15209,15210,15212],{"class":5214,"line":5233},[5212,15211,7142],{"class":5465},[5212,15213,5497],{"class":5356},[5212,15215,15216],{"class":5214,"line":5239},[5212,15217,15218],{"class":5547},"  \u002F\u002F Операції\n",[5212,15220,15221,15223,15225,15227,15229],{"class":5214,"line":5245},[5212,15222,7351],{"class":5356},[5212,15224,7354],{"class":5465},[5212,15226,5485],{"class":5356},[5212,15228,7359],{"class":5469},[5212,15230,6948],{"class":5356},[5212,15232,15233,15235,15237,15239,15241,15243,15245,15248,15251],{"class":5214,"line":5251},[5212,15234,6939],{"class":5465},[5212,15236,5485],{"class":5356},[5212,15238,7359],{"class":5469},[5212,15240,5314],{"class":5356},[5212,15242,5110],{"class":5469},[5212,15244,13458],{"class":5356},[5212,15246,15247],{"class":5384},"'55P03'",[5212,15249,15250],{"class":5356},") { ",[5212,15252,15253],{"class":5547},"\u002F\u002F Lock timeout\n",[5212,15255,15256,15259,15261,15263,15265,15268],{"class":5214,"line":5257},[5212,15257,15258],{"class":5469},"    console",[5212,15260,5314],{"class":5356},[5212,15262,13534],{"class":5475},[5212,15264,5479],{"class":5356},[5212,15266,15267],{"class":5384},"'Lock timeout exceeded, retrying...'",[5212,15269,5656],{"class":5356},[5212,15271,15272],{"class":5214,"line":5263},[5212,15273,6971],{"class":5356},[5212,15275,15276],{"class":5214,"line":5269},[5212,15277,7396],{"class":5356},[5177,15279],{},[5180,15281,15283],{"id":15282},"performance-considerations","Performance considerations",[5185,15285,15287],{"id":15286},"довгі-транзакції-блокують-бд","Довгі транзакції блокують БД",[5190,15289,15290,15291,15294],{},"Транзакції тримають ",[5136,15292,15293],{},"блокування"," на записах, які вони змінюють. Довгі транзакції збільшують ймовірність deadlocks та зменшують throughput системи.",[5190,15296,15297,15299,15300,5314],{},[5136,15298,9055],{}," Транзакція має бути ",[5136,15301,15302],{},"якомога коротшою",[5185,15304,15306],{"id":15305},"мінімізація-часу-транзакції","Мінімізація часу транзакції",[5190,15308,15309],{},[5136,15310,15311],{},"❌ ПОГАНО: Повільні операції всередині транзакції:",[5204,15313,15315],{"className":5456,"code":15314,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  const user = await manager.save(User, userData);\n  \n  \u002F\u002F ⚠️ HTTP запит до зовнішнього API (повільно!)\n  const apiResponse = await fetch('https:\u002F\u002Fexternal-api.com\u002Fverify', {\n    method: 'POST',\n    body: JSON.stringify({ userId: user.id }),\n  });\n  \n  await manager.update(User, { id: user.id }, { verified: apiResponse.verified });\n});\n",[5110,15316,15317,15341,15368,15372,15377,15398,15408,15434,15438,15442,15480],{"__ignoreMap":5208},[5212,15318,15319,15321,15323,15325,15327,15329,15331,15333,15335,15337,15339],{"class":5214,"line":5215},[5212,15320,5466],{"class":5465},[5212,15322,5470],{"class":5469},[5212,15324,5314],{"class":5356},[5212,15326,5476],{"class":5475},[5212,15328,5479],{"class":5356},[5212,15330,5482],{"class":5349},[5212,15332,5485],{"class":5356},[5212,15334,5488],{"class":5469},[5212,15336,5491],{"class":5356},[5212,15338,5494],{"class":5349},[5212,15340,5497],{"class":5356},[5212,15342,15343,15345,15347,15349,15351,15353,15355,15357,15359,15361,15363,15366],{"class":5214,"line":5221},[5212,15344,5992],{"class":5349},[5212,15346,6546],{"class":5744},[5212,15348,5762],{"class":5356},[5212,15350,5466],{"class":5465},[5212,15352,5505],{"class":5469},[5212,15354,5314],{"class":5356},[5212,15356,6006],{"class":5475},[5212,15358,5479],{"class":5356},[5212,15360,6402],{"class":5469},[5212,15362,5888],{"class":5356},[5212,15364,15365],{"class":5469},"userData",[5212,15367,5656],{"class":5356},[5212,15369,15370],{"class":5214,"line":5227},[5212,15371,9726],{"class":5356},[5212,15373,15374],{"class":5214,"line":5233},[5212,15375,15376],{"class":5547},"  \u002F\u002F ⚠️ HTTP запит до зовнішнього API (повільно!)\n",[5212,15378,15379,15381,15384,15386,15388,15391,15393,15396],{"class":5214,"line":5239},[5212,15380,5992],{"class":5349},[5212,15382,15383],{"class":5744}," apiResponse",[5212,15385,5762],{"class":5356},[5212,15387,5466],{"class":5465},[5212,15389,15390],{"class":5475}," fetch",[5212,15392,5479],{"class":5356},[5212,15394,15395],{"class":5384},"'https:\u002F\u002Fexternal-api.com\u002Fverify'",[5212,15397,6014],{"class":5356},[5212,15399,15400,15403,15406],{"class":5214,"line":5245},[5212,15401,15402],{"class":5469},"    method:",[5212,15404,15405],{"class":5384}," 'POST'",[5212,15407,6025],{"class":5356},[5212,15409,15410,15413,15416,15418,15421,15423,15425,15427,15429,15431],{"class":5214,"line":5251},[5212,15411,15412],{"class":5469},"    body:",[5212,15414,15415],{"class":5744}," JSON",[5212,15417,5314],{"class":5356},[5212,15419,15420],{"class":5475},"stringify",[5212,15422,8304],{"class":5356},[5212,15424,7012],{"class":5469},[5212,15426,6546],{"class":5469},[5212,15428,5314],{"class":5356},[5212,15430,6092],{"class":5469},[5212,15432,15433],{"class":5356}," }),\n",[5212,15435,15436],{"class":5214,"line":5257},[5212,15437,6050],{"class":5356},[5212,15439,15440],{"class":5214,"line":5263},[5212,15441,9726],{"class":5356},[5212,15443,15444,15446,15448,15450,15452,15454,15456,15458,15460,15462,15464,15466,15468,15471,15473,15475,15478],{"class":5214,"line":5269},[5212,15445,5502],{"class":5465},[5212,15447,5505],{"class":5469},[5212,15449,5314],{"class":5356},[5212,15451,5510],{"class":5475},[5212,15453,5479],{"class":5356},[5212,15455,6402],{"class":5469},[5212,15457,5518],{"class":5356},[5212,15459,5521],{"class":5469},[5212,15461,6546],{"class":5469},[5212,15463,5314],{"class":5356},[5212,15465,6092],{"class":5469},[5212,15467,5527],{"class":5356},[5212,15469,15470],{"class":5469},"verified:",[5212,15472,15383],{"class":5469},[5212,15474,5314],{"class":5356},[5212,15476,15477],{"class":5469},"verified",[5212,15479,7018],{"class":5356},[5212,15481,15482],{"class":5214,"line":5275},[5212,15483,5597],{"class":5356},[5190,15485,15486],{},[5136,15487,15488],{},"✅ ДОБРЕ: Повільні операції після транзакції:",[5204,15490,15492],{"className":5456,"code":15491,"language":5458,"meta":5208,"style":5208},"const user = await dataSource.transaction(async (manager) => {\n  return manager.save(User, userData);\n});\n\n\u002F\u002F HTTP запит після commit\nconst apiResponse = await fetch('https:\u002F\u002Fexternal-api.com\u002Fverify', {\n  method: 'POST',\n  body: JSON.stringify({ userId: user.id }),\n});\n\n\u002F\u002F Окрема транзакція для оновлення\nawait userRepository.update({ id: user.id }, { verified: apiResponse.verified });\n",[5110,15493,15494,15524,15544,15548,15552,15557,15575,15584,15607,15611,15615,15620],{"__ignoreMap":5208},[5212,15495,15496,15498,15500,15502,15504,15506,15508,15510,15512,15514,15516,15518,15520,15522],{"class":5214,"line":5215},[5212,15497,7220],{"class":5349},[5212,15499,6546],{"class":5744},[5212,15501,5762],{"class":5356},[5212,15503,5466],{"class":5465},[5212,15505,5470],{"class":5469},[5212,15507,5314],{"class":5356},[5212,15509,5476],{"class":5475},[5212,15511,5479],{"class":5356},[5212,15513,5482],{"class":5349},[5212,15515,5485],{"class":5356},[5212,15517,5488],{"class":5469},[5212,15519,5491],{"class":5356},[5212,15521,5494],{"class":5349},[5212,15523,5497],{"class":5356},[5212,15525,15526,15528,15530,15532,15534,15536,15538,15540,15542],{"class":5214,"line":5221},[5212,15527,13644],{"class":5465},[5212,15529,5505],{"class":5469},[5212,15531,5314],{"class":5356},[5212,15533,6006],{"class":5475},[5212,15535,5479],{"class":5356},[5212,15537,6402],{"class":5469},[5212,15539,5888],{"class":5356},[5212,15541,15365],{"class":5469},[5212,15543,5656],{"class":5356},[5212,15545,15546],{"class":5214,"line":5227},[5212,15547,5597],{"class":5356},[5212,15549,15550],{"class":5214,"line":5233},[5212,15551,5662],{"emptyLinePlaceholder":5661},[5212,15553,15554],{"class":5214,"line":5239},[5212,15555,15556],{"class":5547},"\u002F\u002F HTTP запит після commit\n",[5212,15558,15559,15561,15563,15565,15567,15569,15571,15573],{"class":5214,"line":5245},[5212,15560,7220],{"class":5349},[5212,15562,15383],{"class":5744},[5212,15564,5762],{"class":5356},[5212,15566,5466],{"class":5465},[5212,15568,15390],{"class":5475},[5212,15570,5479],{"class":5356},[5212,15572,15395],{"class":5384},[5212,15574,6014],{"class":5356},[5212,15576,15577,15580,15582],{"class":5214,"line":5251},[5212,15578,15579],{"class":5469},"  method:",[5212,15581,15405],{"class":5384},[5212,15583,6025],{"class":5356},[5212,15585,15586,15589,15591,15593,15595,15597,15599,15601,15603,15605],{"class":5214,"line":5257},[5212,15587,15588],{"class":5469},"  body:",[5212,15590,15415],{"class":5744},[5212,15592,5314],{"class":5356},[5212,15594,15420],{"class":5475},[5212,15596,8304],{"class":5356},[5212,15598,7012],{"class":5469},[5212,15600,6546],{"class":5469},[5212,15602,5314],{"class":5356},[5212,15604,6092],{"class":5469},[5212,15606,15433],{"class":5356},[5212,15608,15609],{"class":5214,"line":5263},[5212,15610,5597],{"class":5356},[5212,15612,15613],{"class":5214,"line":5269},[5212,15614,5662],{"emptyLinePlaceholder":5661},[5212,15616,15617],{"class":5214,"line":5275},[5212,15618,15619],{"class":5547},"\u002F\u002F Окрема транзакція для оновлення\n",[5212,15621,15622,15624,15626,15628,15630,15632,15634,15636,15638,15640,15642,15644,15646,15648,15650],{"class":5214,"line":5281},[5212,15623,5466],{"class":5465},[5212,15625,9914],{"class":5469},[5212,15627,5314],{"class":5356},[5212,15629,5510],{"class":5475},[5212,15631,8304],{"class":5356},[5212,15633,5521],{"class":5469},[5212,15635,6546],{"class":5469},[5212,15637,5314],{"class":5356},[5212,15639,6092],{"class":5469},[5212,15641,5527],{"class":5356},[5212,15643,15470],{"class":5469},[5212,15645,15383],{"class":5469},[5212,15647,5314],{"class":5356},[5212,15649,15477],{"class":5469},[5212,15651,7018],{"class":5356},[5185,15653,15655],{"id":15654},"винесення-io-операцій-за-межі-транзакції","Винесення I\u002FO операцій за межі транзакції",[5190,15657,15658,15661],{},[5136,15659,15660],{},"I\u002FO операції",", що мають бути поза транзакцією:",[5092,15663,15664,15667,15670,15673,15676],{},[5095,15665,15666],{},"HTTP запити до зовнішніх API.",[5095,15668,15669],{},"Відправка email або SMS.",[5095,15671,15672],{},"Обробка файлів (читання, запис, завантаження).",[5095,15674,15675],{},"Генерація PDF або інших документів.",[5095,15677,15678],{},"Взаємодія з чергами (RabbitMQ, Redis).",[5185,15680,15682],{"id":15681},"connection-pooling-та-транзакції","Connection pooling та транзакції",[5190,15684,15685,15686,15689],{},"TypeORM використовує ",[5136,15687,15688],{},"connection pool"," для повторного використання з'єднань з БД. Транзакція займає одне з'єднання на весь час виконання.",[5190,15691,15692],{},[5136,15693,15694],{},"Налаштування pool:",[5204,15696,15698],{"className":5456,"code":15697,"language":5458,"meta":5208,"style":5208},"const dataSource = new DataSource({\n  type: 'postgres',\n  host: 'localhost',\n  database: 'mydb',\n  extra: {\n    max: 20,        \u002F\u002F Максимум з'єднань у pool\n    idleTimeoutMillis: 30000, \u002F\u002F Час простою перед закриттям\n    connectionTimeoutMillis: 2000, \u002F\u002F Timeout для отримання з'єднання\n  },\n});\n",[5110,15699,15700,15717,15727,15737,15747,15754,15768,15781,15794,15799],{"__ignoreMap":5208},[5212,15701,15702,15704,15706,15708,15711,15714],{"class":5214,"line":5215},[5212,15703,7220],{"class":5349},[5212,15705,5470],{"class":5744},[5212,15707,5762],{"class":5356},[5212,15709,15710],{"class":5349},"new",[5212,15712,15713],{"class":5475}," DataSource",[5212,15715,15716],{"class":5356},"({\n",[5212,15718,15719,15722,15725],{"class":5214,"line":5221},[5212,15720,15721],{"class":5469},"  type:",[5212,15723,15724],{"class":5384}," 'postgres'",[5212,15726,6025],{"class":5356},[5212,15728,15729,15732,15735],{"class":5214,"line":5227},[5212,15730,15731],{"class":5469},"  host:",[5212,15733,15734],{"class":5384}," 'localhost'",[5212,15736,6025],{"class":5356},[5212,15738,15739,15742,15745],{"class":5214,"line":5233},[5212,15740,15741],{"class":5469},"  database:",[5212,15743,15744],{"class":5384}," 'mydb'",[5212,15746,6025],{"class":5356},[5212,15748,15749,15752],{"class":5214,"line":5239},[5212,15750,15751],{"class":5469},"  extra:",[5212,15753,5497],{"class":5356},[5212,15755,15756,15759,15762,15765],{"class":5214,"line":5245},[5212,15757,15758],{"class":5469},"    max:",[5212,15760,15761],{"class":5374}," 20",[5212,15763,15764],{"class":5356},",        ",[5212,15766,15767],{"class":5547},"\u002F\u002F Максимум з'єднань у pool\n",[5212,15769,15770,15773,15776,15778],{"class":5214,"line":5251},[5212,15771,15772],{"class":5469},"    idleTimeoutMillis:",[5212,15774,15775],{"class":5374}," 30000",[5212,15777,5888],{"class":5356},[5212,15779,15780],{"class":5547},"\u002F\u002F Час простою перед закриттям\n",[5212,15782,15783,15786,15789,15791],{"class":5214,"line":5257},[5212,15784,15785],{"class":5469},"    connectionTimeoutMillis:",[5212,15787,15788],{"class":5374}," 2000",[5212,15790,5888],{"class":5356},[5212,15792,15793],{"class":5547},"\u002F\u002F Timeout для отримання з'єднання\n",[5212,15795,15796],{"class":5214,"line":5263},[5212,15797,15798],{"class":5356},"  },\n",[5212,15800,15801],{"class":5214,"line":5269},[5212,15802,5597],{"class":5356},[5190,15804,15805,15807],{},[5136,15806,9055],{}," Кількість з'єднань у pool має бути достатньою для пікового навантаження.",[5177,15809],{},[5180,15811,15813],{"id":15812},"практичні-приклади","Практичні приклади",[5185,15815,15817],{"id":15816},"переказ-коштів-між-рахунками","Переказ коштів між рахунками",[5204,15819,15821],{"className":5456,"code":15820,"language":5458,"meta":5208,"style":5208},"async transferMoney(\n  fromAccountId: number,\n  toAccountId: number,\n  amount: number\n): Promise\u003C{ success: boolean; message: string }> {\n  return this.dataSource.transaction(async (manager) => {\n    \u002F\u002F Блокування рахунків у порядку зростання ID\n    const [firstId, secondId] = [fromAccountId, toAccountId].sort((a, b) => a - b);\n\n    const account1 = await manager.findOne(Account, {\n      where: { id: firstId },\n      lock: { mode: 'pessimistic_write' },\n    });\n\n    const account2 = await manager.findOne(Account, {\n      where: { id: secondId },\n      lock: { mode: 'pessimistic_write' },\n    });\n\n    const fromAccount = fromAccountId === firstId ? account1 : account2;\n    const toAccount = toAccountId === firstId ? account1 : account2;\n\n    if (!fromAccount || !toAccount) {\n      throw new Error('Account not found');\n    }\n\n    if (fromAccount.balance \u003C amount) {\n      throw new Error('Insufficient balance');\n    }\n\n    \u002F\u002F Виконати переказ\n    await manager.decrement(Account, { id: fromAccountId }, 'balance', amount);\n    await manager.increment(Account, { id: toAccountId }, 'balance', amount);\n\n    \u002F\u002F Створити запис про транзакцію\n    await manager.save(Transaction, {\n      fromAccountId,\n      toAccountId,\n      amount,\n      type: 'transfer',\n      status: 'completed',\n    });\n\n    return { success: true, message: 'Transfer completed successfully' };\n  });\n}\n",[5110,15822,15823,15831,15842,15853,15863,15892,15909,15914,15959,15963,15985,15997,16009,16013,16017,16039,16051,16063,16067,16071,16100,16125,16129,16146,16161,16165,16169,16180,16195,16199,16203,16208,16240,16272,16276,16280,16296,16302,16308,16314,16324,16336,16340,16344,16368,16372],{"__ignoreMap":5208},[5212,15824,15825,15827,15829],{"class":5214,"line":5215},[5212,15826,5482],{"class":5469},[5212,15828,8439],{"class":5475},[5212,15830,8520],{"class":5356},[5212,15832,15833,15836,15838,15840],{"class":5214,"line":5221},[5212,15834,15835],{"class":5469},"  fromAccountId",[5212,15837,7447],{"class":5356},[5212,15839,8449],{"class":5469},[5212,15841,6025],{"class":5356},[5212,15843,15844,15847,15849,15851],{"class":5214,"line":5227},[5212,15845,15846],{"class":5469},"  toAccountId",[5212,15848,7447],{"class":5356},[5212,15850,8449],{"class":5469},[5212,15852,6025],{"class":5356},[5212,15854,15855,15858,15860],{"class":5214,"line":5233},[5212,15856,15857],{"class":5469},"  amount",[5212,15859,7447],{"class":5356},[5212,15861,15862],{"class":5469},"number\n",[5212,15864,15865,15867,15869,15872,15875,15877,15880,15882,15884,15886,15889],{"class":5214,"line":5239},[5212,15866,7683],{"class":5356},[5212,15868,7686],{"class":7450},[5212,15870,15871],{"class":5356},"\u003C{ ",[5212,15873,15874],{"class":12516},"success",[5212,15876,7447],{"class":5356},[5212,15878,15879],{"class":5469},"boolean",[5212,15881,12871],{"class":5356},[5212,15883,7384],{"class":12516},[5212,15885,7447],{"class":5356},[5212,15887,15888],{"class":5469},"string",[5212,15890,15891],{"class":5356}," }> {\n",[5212,15893,15894,15897,15899,15901,15903,15905,15907],{"class":5214,"line":5245},[5212,15895,15896],{"class":5356},"  return this.dataSource.transaction(",[5212,15898,5482],{"class":5475},[5212,15900,5485],{"class":5356},[5212,15902,5488],{"class":5469},[5212,15904,5491],{"class":5356},[5212,15906,5494],{"class":5349},[5212,15908,5497],{"class":5356},[5212,15910,15911],{"class":5214,"line":5251},[5212,15912,15913],{"class":5547},"    \u002F\u002F Блокування рахунків у порядку зростання ID\n",[5212,15915,15916,15918,15920,15922,15924,15926,15929,15931,15933,15935,15937,15939,15941,15943,15945,15947,15949,15951,15953,15955,15957],{"class":5214,"line":5257},[5212,15917,7173],{"class":7450},[5212,15919,14244],{"class":5356},[5212,15921,14247],{"class":5469},[5212,15923,5888],{"class":5356},[5212,15925,14252],{"class":5469},[5212,15927,15928],{"class":5356},"] = [",[5212,15930,8444],{"class":5469},[5212,15932,5888],{"class":5356},[5212,15934,8454],{"class":5469},[5212,15936,14952],{"class":5356},[5212,15938,14955],{"class":5475},[5212,15940,14958],{"class":5356},[5212,15942,14961],{"class":5469},[5212,15944,5888],{"class":5356},[5212,15946,14966],{"class":5469},[5212,15948,5491],{"class":5356},[5212,15950,5494],{"class":5349},[5212,15952,14973],{"class":5469},[5212,15954,5767],{"class":5356},[5212,15956,14966],{"class":5469},[5212,15958,5656],{"class":5356},[5212,15960,15961],{"class":5214,"line":5263},[5212,15962,5662],{"emptyLinePlaceholder":5661},[5212,15964,15965,15967,15969,15971,15973,15975,15977,15979,15981,15983],{"class":5214,"line":5269},[5212,15966,7173],{"class":7450},[5212,15968,14298],{"class":5469},[5212,15970,5762],{"class":5356},[5212,15972,5466],{"class":5465},[5212,15974,5505],{"class":5469},[5212,15976,5314],{"class":5356},[5212,15978,6878],{"class":5475},[5212,15980,5479],{"class":5356},[5212,15982,5515],{"class":5469},[5212,15984,6014],{"class":5356},[5212,15986,15987,15989,15991,15993,15995],{"class":5214,"line":5275},[5212,15988,14319],{"class":5469},[5212,15990,6893],{"class":5356},[5212,15992,5521],{"class":5469},[5212,15994,14326],{"class":5469},[5212,15996,6119],{"class":5356},[5212,15998,15999,16001,16003,16005,16007],{"class":5214,"line":5281},[5212,16000,14333],{"class":5469},[5212,16002,6893],{"class":5356},[5212,16004,6918],{"class":5469},[5212,16006,6921],{"class":5384},[5212,16008,6119],{"class":5356},[5212,16010,16011],{"class":5214,"line":5287},[5212,16012,7911],{"class":5356},[5212,16014,16015],{"class":5214,"line":5293},[5212,16016,5662],{"emptyLinePlaceholder":5661},[5212,16018,16019,16021,16023,16025,16027,16029,16031,16033,16035,16037],{"class":5214,"line":6165},[5212,16020,7173],{"class":7450},[5212,16022,14356],{"class":5469},[5212,16024,5762],{"class":5356},[5212,16026,5466],{"class":5465},[5212,16028,5505],{"class":5469},[5212,16030,5314],{"class":5356},[5212,16032,6878],{"class":5475},[5212,16034,5479],{"class":5356},[5212,16036,5515],{"class":5469},[5212,16038,6014],{"class":5356},[5212,16040,16041,16043,16045,16047,16049],{"class":5214,"line":6171},[5212,16042,14319],{"class":5469},[5212,16044,6893],{"class":5356},[5212,16046,5521],{"class":5469},[5212,16048,14383],{"class":5469},[5212,16050,6119],{"class":5356},[5212,16052,16053,16055,16057,16059,16061],{"class":5214,"line":6207},[5212,16054,14333],{"class":5469},[5212,16056,6893],{"class":5356},[5212,16058,6918],{"class":5469},[5212,16060,6921],{"class":5384},[5212,16062,6119],{"class":5356},[5212,16064,16065],{"class":5214,"line":6239},[5212,16066,7911],{"class":5356},[5212,16068,16069],{"class":5214,"line":6244},[5212,16070,5662],{"emptyLinePlaceholder":5661},[5212,16072,16073,16075,16078,16080,16082,16084,16086,16089,16092,16095,16098],{"class":5214,"line":6250},[5212,16074,7173],{"class":7450},[5212,16076,16077],{"class":5469}," fromAccount",[5212,16079,5762],{"class":5356},[5212,16081,8444],{"class":5469},[5212,16083,13458],{"class":5356},[5212,16085,14247],{"class":5469},[5212,16087,16088],{"class":5356}," ? ",[5212,16090,16091],{"class":5469},"account1",[5212,16093,16094],{"class":5356}," : ",[5212,16096,16097],{"class":5469},"account2",[5212,16099,5357],{"class":5356},[5212,16101,16102,16104,16107,16109,16111,16113,16115,16117,16119,16121,16123],{"class":5214,"line":6738},[5212,16103,7173],{"class":7450},[5212,16105,16106],{"class":5469}," toAccount",[5212,16108,5762],{"class":5356},[5212,16110,8454],{"class":5469},[5212,16112,13458],{"class":5356},[5212,16114,14247],{"class":5469},[5212,16116,16088],{"class":5356},[5212,16118,16091],{"class":5469},[5212,16120,16094],{"class":5356},[5212,16122,16097],{"class":5469},[5212,16124,5357],{"class":5356},[5212,16126,16127],{"class":5214,"line":6743},[5212,16128,5662],{"emptyLinePlaceholder":5661},[5212,16130,16131,16133,16135,16138,16141,16144],{"class":5214,"line":6748},[5212,16132,8565],{"class":5475},[5212,16134,6942],{"class":5356},[5212,16136,16137],{"class":5469},"fromAccount",[5212,16139,16140],{"class":5356}," || !",[5212,16142,16143],{"class":5469},"toAccount",[5212,16145,6948],{"class":5356},[5212,16147,16148,16150,16152,16154,16156,16159],{"class":5214,"line":6754},[5212,16149,8573],{"class":5465},[5212,16151,6956],{"class":5349},[5212,16153,6959],{"class":5475},[5212,16155,5479],{"class":5356},[5212,16157,16158],{"class":5384},"'Account not found'",[5212,16160,5656],{"class":5356},[5212,16162,16163],{"class":5214,"line":6772},[5212,16164,7342],{"class":5356},[5212,16166,16167],{"class":5214,"line":6785},[5212,16168,5662],{"emptyLinePlaceholder":5661},[5212,16170,16171,16173,16176,16178],{"class":5214,"line":6799},[5212,16172,8565],{"class":5475},[5212,16174,16175],{"class":5356}," (fromAccount.balance \u003C ",[5212,16177,8463],{"class":5469},[5212,16179,6948],{"class":5356},[5212,16181,16182,16184,16186,16188,16190,16193],{"class":5214,"line":6804},[5212,16183,8573],{"class":5465},[5212,16185,6956],{"class":5349},[5212,16187,6959],{"class":5475},[5212,16189,5479],{"class":5356},[5212,16191,16192],{"class":5384},"'Insufficient balance'",[5212,16194,5656],{"class":5356},[5212,16196,16197],{"class":5214,"line":7914},[5212,16198,7342],{"class":5356},[5212,16200,16201],{"class":5214,"line":7919},[5212,16202,5662],{"emptyLinePlaceholder":5661},[5212,16204,16205],{"class":5214,"line":8719},[5212,16206,16207],{"class":5547},"    \u002F\u002F Виконати переказ\n",[5212,16209,16210,16212,16214,16216,16218,16220,16222,16224,16226,16228,16230,16232,16234,16236,16238],{"class":5214,"line":8727},[5212,16211,8060],{"class":7450},[5212,16213,5505],{"class":7450},[5212,16215,5314],{"class":5356},[5212,16217,6180],{"class":7450},[5212,16219,5479],{"class":5356},[5212,16221,5515],{"class":5469},[5212,16223,5518],{"class":5356},[5212,16225,6092],{"class":5469},[5212,16227,7447],{"class":5356},[5212,16229,8444],{"class":5469},[5212,16231,6194],{"class":5356},[5212,16233,6413],{"class":5384},[5212,16235,5888],{"class":5356},[5212,16237,8463],{"class":5469},[5212,16239,5656],{"class":5356},[5212,16241,16242,16244,16246,16248,16250,16252,16254,16256,16258,16260,16262,16264,16266,16268,16270],{"class":5214,"line":8740},[5212,16243,8060],{"class":7450},[5212,16245,5505],{"class":7450},[5212,16247,5314],{"class":5356},[5212,16249,6397],{"class":7450},[5212,16251,5479],{"class":5356},[5212,16253,5515],{"class":5469},[5212,16255,5518],{"class":5356},[5212,16257,6092],{"class":5469},[5212,16259,7447],{"class":5356},[5212,16261,8454],{"class":5469},[5212,16263,6194],{"class":5356},[5212,16265,6413],{"class":5384},[5212,16267,5888],{"class":5356},[5212,16269,8463],{"class":5469},[5212,16271,5656],{"class":5356},[5212,16273,16274],{"class":5214,"line":8745},[5212,16275,5662],{"emptyLinePlaceholder":5661},[5212,16277,16278],{"class":5214,"line":8750},[5212,16279,8686],{"class":5547},[5212,16281,16282,16284,16286,16288,16290,16292,16294],{"class":5214,"line":11232},[5212,16283,8060],{"class":7450},[5212,16285,5505],{"class":7450},[5212,16287,5314],{"class":5356},[5212,16289,6006],{"class":7450},[5212,16291,5479],{"class":5356},[5212,16293,6444],{"class":5469},[5212,16295,6014],{"class":5356},[5212,16297,16298,16300],{"class":5214,"line":11238},[5212,16299,8707],{"class":5469},[5212,16301,6025],{"class":5356},[5212,16303,16304,16306],{"class":5214,"line":11255},[5212,16305,8714],{"class":5469},[5212,16307,6025],{"class":5356},[5212,16309,16310,16312],{"class":5214,"line":11263},[5212,16311,8722],{"class":5469},[5212,16313,6025],{"class":5356},[5212,16315,16316,16318,16320,16322],{"class":5214,"line":11279},[5212,16317,8730],{"class":5469},[5212,16319,7447],{"class":5356},[5212,16321,8735],{"class":5384},[5212,16323,6025],{"class":5356},[5212,16325,16326,16329,16331,16334],{"class":5214,"line":11287},[5212,16327,16328],{"class":5469},"      status",[5212,16330,7447],{"class":5356},[5212,16332,16333],{"class":5384},"'completed'",[5212,16335,6025],{"class":5356},[5212,16337,16338],{"class":5214,"line":11298},[5212,16339,7911],{"class":5356},[5212,16341,16342],{"class":5214,"line":11304},[5212,16343,5662],{"emptyLinePlaceholder":5661},[5212,16345,16346,16348,16350,16352,16354,16357,16359,16361,16363,16366],{"class":5214,"line":11309},[5212,16347,7699],{"class":7450},[5212,16349,6893],{"class":5356},[5212,16351,15874],{"class":5469},[5212,16353,7447],{"class":5356},[5212,16355,16356],{"class":7450},"true",[5212,16358,5888],{"class":5356},[5212,16360,7384],{"class":5469},[5212,16362,7447],{"class":5356},[5212,16364,16365],{"class":5384},"'Transfer completed successfully'",[5212,16367,13742],{"class":5356},[5212,16369,16370],{"class":5214,"line":11334},[5212,16371,6050],{"class":5356},[5212,16373,16374],{"class":5214,"line":11339},[5212,16375,7396],{"class":5356},[5185,16377,16379],{"id":16378},"створення-замовлення-з-позиціями-та-оновленням-складу","Створення замовлення з позиціями та оновленням складу",[5204,16381,16383],{"className":5456,"code":16382,"language":5458,"meta":5208,"style":5208},"async createOrder(dto: CreateOrderDto): Promise\u003COrder> {\n  return this.dataSource.transaction(async (manager) => {\n    \u002F\u002F 1. Створити замовлення\n    const order = await manager.save(Order, {\n      userId: dto.userId,\n      status: 'pending',\n      totalAmount: 0,\n    });\n\n    let totalAmount = 0;\n\n    \u002F\u002F 2. Обробити кожну позицію\n    for (const item of dto.items) {\n      \u002F\u002F Заблокувати товар для оновлення\n      const product = await manager.findOne(Product, {\n        where: { id: item.productId },\n        lock: { mode: 'pessimistic_write' },\n      });\n\n      if (!product) {\n        throw new Error(`Product ${item.productId} not found`);\n      }\n\n      if (product.stock \u003C item.quantity) {\n        throw new Error(`Insufficient stock for product ${product.name}`);\n      }\n\n      \u002F\u002F Додати позицію замовлення\n      await manager.save(OrderItem, {\n        orderId: order.id,\n        productId: item.productId,\n        quantity: item.quantity,\n        price: product.price,\n      });\n\n      \u002F\u002F Оновити склад\n      await manager.decrement(Product, { id: item.productId }, 'stock', item.quantity);\n\n      totalAmount += product.price * item.quantity;\n    }\n\n    \u002F\u002F 3. Оновити загальну суму\n    await manager.update(Order, { id: order.id }, { totalAmount });\n\n    return order;\n  });\n}\n",[5110,16384,16385,16410,16426,16430,16452,16464,16472,16480,16484,16488,16500,16504,16509,16524,16529,16551,16567,16579,16583,16587,16597,16624,16628,16632,16654,16681,16685,16689,16693,16709,16721,16733,16745,16757,16761,16765,16769,16807,16811,16833,16837,16841,16846,16879,16883,16891,16895],{"__ignoreMap":5208},[5212,16386,16387,16389,16392,16394,16396,16398,16400,16402,16404,16406,16408],{"class":5214,"line":5215},[5212,16388,5482],{"class":5469},[5212,16390,16391],{"class":5475}," createOrder",[5212,16393,5479],{"class":5356},[5212,16395,7675],{"class":5469},[5212,16397,7447],{"class":5356},[5212,16399,10836],{"class":5469},[5212,16401,7683],{"class":5356},[5212,16403,7686],{"class":7450},[5212,16405,7689],{"class":5356},[5212,16407,6011],{"class":5469},[5212,16409,7694],{"class":5356},[5212,16411,16412,16414,16416,16418,16420,16422,16424],{"class":5214,"line":5221},[5212,16413,15896],{"class":5356},[5212,16415,5482],{"class":5475},[5212,16417,5485],{"class":5356},[5212,16419,5488],{"class":5469},[5212,16421,5491],{"class":5356},[5212,16423,5494],{"class":5349},[5212,16425,5497],{"class":5356},[5212,16427,16428],{"class":5214,"line":5227},[5212,16429,10892],{"class":5547},[5212,16431,16432,16434,16436,16438,16440,16442,16444,16446,16448,16450],{"class":5214,"line":5233},[5212,16433,7173],{"class":7450},[5212,16435,5995],{"class":5469},[5212,16437,5762],{"class":5356},[5212,16439,5466],{"class":5465},[5212,16441,5505],{"class":5469},[5212,16443,5314],{"class":5356},[5212,16445,6006],{"class":5475},[5212,16447,5479],{"class":5356},[5212,16449,6011],{"class":5469},[5212,16451,6014],{"class":5356},[5212,16453,16454,16456,16458,16460,16462],{"class":5214,"line":5239},[5212,16455,10923],{"class":5469},[5212,16457,7760],{"class":5469},[5212,16459,5314],{"class":5356},[5212,16461,8774],{"class":5469},[5212,16463,6025],{"class":5356},[5212,16465,16466,16468,16470],{"class":5214,"line":5245},[5212,16467,10947],{"class":5469},[5212,16469,6043],{"class":5384},[5212,16471,6025],{"class":5356},[5212,16473,16474,16476,16478],{"class":5214,"line":5251},[5212,16475,10937],{"class":5469},[5212,16477,10940],{"class":5374},[5212,16479,6025],{"class":5356},[5212,16481,16482],{"class":5214,"line":5257},[5212,16483,7911],{"class":5356},[5212,16485,16486],{"class":5214,"line":5263},[5212,16487,5662],{"emptyLinePlaceholder":5661},[5212,16489,16490,16492,16494,16496,16498],{"class":5214,"line":5269},[5212,16491,10964],{"class":7450},[5212,16493,10967],{"class":5469},[5212,16495,5762],{"class":5356},[5212,16497,5653],{"class":5374},[5212,16499,5357],{"class":5356},[5212,16501,16502],{"class":5214,"line":5275},[5212,16503,5662],{"emptyLinePlaceholder":5661},[5212,16505,16506],{"class":5214,"line":5281},[5212,16507,16508],{"class":5547},"    \u002F\u002F 2. Обробити кожну позицію\n",[5212,16510,16511,16513,16515,16517,16519,16521],{"class":5214,"line":5287},[5212,16512,7215],{"class":5475},[5212,16514,5485],{"class":5356},[5212,16516,7220],{"class":5469},[5212,16518,10993],{"class":5469},[5212,16520,7225],{"class":5469},[5212,16522,16523],{"class":5356}," dto.items) {\n",[5212,16525,16526],{"class":5214,"line":5293},[5212,16527,16528],{"class":5547},"      \u002F\u002F Заблокувати товар для оновлення\n",[5212,16530,16531,16533,16535,16537,16539,16541,16543,16545,16547,16549],{"class":5214,"line":6165},[5212,16532,7735],{"class":5349},[5212,16534,11016],{"class":5744},[5212,16536,5762],{"class":5356},[5212,16538,5466],{"class":5465},[5212,16540,5505],{"class":5469},[5212,16542,5314],{"class":5356},[5212,16544,6878],{"class":5475},[5212,16546,5479],{"class":5356},[5212,16548,6185],{"class":5469},[5212,16550,6014],{"class":5356},[5212,16552,16553,16555,16557,16559,16561,16563,16565],{"class":5214,"line":6171},[5212,16554,11041],{"class":5469},[5212,16556,6893],{"class":5356},[5212,16558,5521],{"class":5469},[5212,16560,10993],{"class":5469},[5212,16562,5314],{"class":5356},[5212,16564,11052],{"class":5469},[5212,16566,6119],{"class":5356},[5212,16568,16569,16571,16573,16575,16577],{"class":5214,"line":6207},[5212,16570,11059],{"class":5469},[5212,16572,6893],{"class":5356},[5212,16574,6918],{"class":5469},[5212,16576,6921],{"class":5384},[5212,16578,6119],{"class":5356},[5212,16580,16581],{"class":5214,"line":6239},[5212,16582,7785],{"class":5356},[5212,16584,16585],{"class":5214,"line":6244},[5212,16586,5662],{"emptyLinePlaceholder":5661},[5212,16588,16589,16591,16593,16595],{"class":5214,"line":6250},[5212,16590,7239],{"class":5465},[5212,16592,6942],{"class":5356},[5212,16594,11084],{"class":5469},[5212,16596,6948],{"class":5356},[5212,16598,16599,16601,16603,16605,16607,16609,16611,16613,16615,16617,16619,16622],{"class":5214,"line":6738},[5212,16600,7262],{"class":5465},[5212,16602,6956],{"class":5349},[5212,16604,6959],{"class":5475},[5212,16606,5479],{"class":5356},[5212,16608,11120],{"class":5384},[5212,16610,7274],{"class":5349},[5212,16612,11100],{"class":5469},[5212,16614,5314],{"class":7279},[5212,16616,11052],{"class":5469},[5212,16618,7284],{"class":5349},[5212,16620,16621],{"class":5384}," not found`",[5212,16623,5656],{"class":5356},[5212,16625,16626],{"class":5214,"line":6743},[5212,16627,7294],{"class":5356},[5212,16629,16630],{"class":5214,"line":6748},[5212,16631,5662],{"emptyLinePlaceholder":5661},[5212,16633,16634,16636,16638,16640,16642,16644,16646,16648,16650,16652],{"class":5214,"line":6754},[5212,16635,7239],{"class":5465},[5212,16637,5485],{"class":5356},[5212,16639,11084],{"class":5469},[5212,16641,5314],{"class":5356},[5212,16643,11094],{"class":5469},[5212,16645,11097],{"class":5356},[5212,16647,11100],{"class":5469},[5212,16649,5314],{"class":5356},[5212,16651,11105],{"class":5469},[5212,16653,6948],{"class":5356},[5212,16655,16656,16658,16660,16662,16664,16667,16669,16671,16673,16675,16677,16679],{"class":5214,"line":6772},[5212,16657,7262],{"class":5465},[5212,16659,6956],{"class":5349},[5212,16661,6959],{"class":5475},[5212,16663,5479],{"class":5356},[5212,16665,16666],{"class":5384},"`Insufficient stock for product ",[5212,16668,7274],{"class":5349},[5212,16670,11084],{"class":5469},[5212,16672,5314],{"class":7279},[5212,16674,9017],{"class":5469},[5212,16676,7284],{"class":5349},[5212,16678,7287],{"class":5384},[5212,16680,5656],{"class":5356},[5212,16682,16683],{"class":5214,"line":6785},[5212,16684,7294],{"class":5356},[5212,16686,16687],{"class":5214,"line":6799},[5212,16688,5662],{"emptyLinePlaceholder":5661},[5212,16690,16691],{"class":5214,"line":6804},[5212,16692,11148],{"class":5547},[5212,16694,16695,16697,16699,16701,16703,16705,16707],{"class":5214,"line":7914},[5212,16696,7308],{"class":5465},[5212,16698,5505],{"class":5469},[5212,16700,5314],{"class":5356},[5212,16702,6006],{"class":5475},[5212,16704,5479],{"class":5356},[5212,16706,6074],{"class":5469},[5212,16708,6014],{"class":5356},[5212,16710,16711,16713,16715,16717,16719],{"class":5214,"line":7919},[5212,16712,11173],{"class":5469},[5212,16714,5995],{"class":5469},[5212,16716,5314],{"class":5356},[5212,16718,6092],{"class":5469},[5212,16720,6025],{"class":5356},[5212,16722,16723,16725,16727,16729,16731],{"class":5214,"line":8719},[5212,16724,11186],{"class":5469},[5212,16726,10993],{"class":5469},[5212,16728,5314],{"class":5356},[5212,16730,11052],{"class":5469},[5212,16732,6025],{"class":5356},[5212,16734,16735,16737,16739,16741,16743],{"class":5214,"line":8727},[5212,16736,11199],{"class":5469},[5212,16738,10993],{"class":5469},[5212,16740,5314],{"class":5356},[5212,16742,11105],{"class":5469},[5212,16744,6025],{"class":5356},[5212,16746,16747,16749,16751,16753,16755],{"class":5214,"line":8740},[5212,16748,11212],{"class":5469},[5212,16750,11016],{"class":5469},[5212,16752,5314],{"class":5356},[5212,16754,11219],{"class":5469},[5212,16756,6025],{"class":5356},[5212,16758,16759],{"class":5214,"line":8745},[5212,16760,7785],{"class":5356},[5212,16762,16763],{"class":5214,"line":8750},[5212,16764,5662],{"emptyLinePlaceholder":5661},[5212,16766,16767],{"class":5214,"line":11232},[5212,16768,11235],{"class":5547},[5212,16770,16771,16773,16775,16777,16779,16781,16783,16785,16787,16789,16791,16793,16795,16797,16799,16801,16803,16805],{"class":5214,"line":11238},[5212,16772,7308],{"class":5465},[5212,16774,5505],{"class":5469},[5212,16776,5314],{"class":5356},[5212,16778,6180],{"class":5475},[5212,16780,5479],{"class":5356},[5212,16782,6185],{"class":5469},[5212,16784,5518],{"class":5356},[5212,16786,5521],{"class":5469},[5212,16788,10993],{"class":5469},[5212,16790,5314],{"class":5356},[5212,16792,11052],{"class":5469},[5212,16794,6194],{"class":5356},[5212,16796,6197],{"class":5384},[5212,16798,5888],{"class":5356},[5212,16800,11100],{"class":5469},[5212,16802,5314],{"class":5356},[5212,16804,11105],{"class":5469},[5212,16806,5656],{"class":5356},[5212,16808,16809],{"class":5214,"line":11255},[5212,16810,5662],{"emptyLinePlaceholder":5661},[5212,16812,16813,16815,16817,16819,16821,16823,16825,16827,16829,16831],{"class":5214,"line":11263},[5212,16814,11312],{"class":5469},[5212,16816,11315],{"class":5356},[5212,16818,11084],{"class":5469},[5212,16820,5314],{"class":5356},[5212,16822,11219],{"class":5469},[5212,16824,7090],{"class":5356},[5212,16826,11100],{"class":5469},[5212,16828,5314],{"class":5356},[5212,16830,11105],{"class":5469},[5212,16832,5357],{"class":5356},[5212,16834,16835],{"class":5214,"line":11279},[5212,16836,7342],{"class":5356},[5212,16838,16839],{"class":5214,"line":11287},[5212,16840,5662],{"emptyLinePlaceholder":5661},[5212,16842,16843],{"class":5214,"line":11298},[5212,16844,16845],{"class":5547},"    \u002F\u002F 3. Оновити загальну суму\n",[5212,16847,16848,16850,16852,16854,16856,16858,16860,16862,16864,16866,16869,16871,16873,16875,16877],{"class":5214,"line":11304},[5212,16849,8060],{"class":7450},[5212,16851,5505],{"class":7450},[5212,16853,5314],{"class":5356},[5212,16855,5510],{"class":7450},[5212,16857,5479],{"class":5356},[5212,16859,6011],{"class":5469},[5212,16861,5518],{"class":5356},[5212,16863,6092],{"class":5469},[5212,16865,7447],{"class":5356},[5212,16867,16868],{"class":5469},"order",[5212,16870,5314],{"class":5356},[5212,16872,6092],{"class":5469},[5212,16874,5527],{"class":5356},[5212,16876,11381],{"class":5469},[5212,16878,7018],{"class":5356},[5212,16880,16881],{"class":5214,"line":11309},[5212,16882,5662],{"emptyLinePlaceholder":5661},[5212,16884,16885,16887,16889],{"class":5214,"line":11334},[5212,16886,7699],{"class":7450},[5212,16888,5995],{"class":5469},[5212,16890,5357],{"class":5356},[5212,16892,16893],{"class":5214,"line":11339},[5212,16894,6050],{"class":5356},[5212,16896,16897],{"class":5214,"line":11344},[5212,16898,7396],{"class":5356},[5185,16900,16902],{"id":16901},"реєстрація-користувача-з-профілем-та-початковими-налаштуваннями","Реєстрація користувача з профілем та початковими налаштуваннями",[5204,16904,16906],{"className":5456,"code":16905,"language":5458,"meta":5208,"style":5208},"async registerUser(dto: RegisterUserDto): Promise\u003CUser> {\n  return this.dataSource.transaction(async (manager) => {\n    \u002F\u002F Перевірка унікальності email\n    const existingUser = await manager.findOne(User, {\n      where: { email: dto.email },\n    });\n\n    if (existingUser) {\n      throw new ConflictException('Email already exists');\n    }\n\n    \u002F\u002F 1. Створити користувача\n    const user = await manager.save(User, {\n      email: dto.email,\n      passwordHash: await bcrypt.hash(dto.password, 10),\n      isActive: true,\n    });\n\n    \u002F\u002F 2. Створити профіль\n    await manager.save(Profile, {\n      userId: user.id,\n      firstName: dto.firstName,\n      lastName: dto.lastName,\n    });\n\n    \u002F\u002F 3. Створити налаштування за замовчуванням\n    await manager.save(UserSettings, {\n      userId: user.id,\n      theme: 'system',\n      language: 'uk',\n      notifications: true,\n    });\n\n    \u002F\u002F 4. Призначити роль за замовчуванням\n    const defaultRole = await manager.findOne(Role, { where: { name: 'user' } });\n    await manager.save(UserRole, {\n      userId: user.id,\n      roleId: defaultRole.id,\n    });\n\n    \u002F\u002F 5. Створити запис у аудит лозі\n    await manager.save(AuditLog, {\n      userId: user.id,\n      action: 'user_registered',\n      metadata: { email: dto.email },\n    });\n\n    return user;\n  });\n}\n",[5110,16907,16908,16934,16950,16955,16978,16994,16998,17002,17013,17029,17033,17037,17042,17064,17077,17105,17114,17118,17122,17127,17143,17158,17173,17188,17192,17196,17201,17217,17231,17243,17255,17266,17270,17274,17279,17315,17331,17345,17361,17365,17369,17374,17391,17405,17417,17437,17441,17445,17453,17457],{"__ignoreMap":5208},[5212,16909,16910,16912,16915,16917,16919,16921,16924,16926,16928,16930,16932],{"class":5214,"line":5215},[5212,16911,5482],{"class":5469},[5212,16913,16914],{"class":5475}," registerUser",[5212,16916,5479],{"class":5356},[5212,16918,7675],{"class":5469},[5212,16920,7447],{"class":5356},[5212,16922,16923],{"class":5469},"RegisterUserDto",[5212,16925,7683],{"class":5356},[5212,16927,7686],{"class":7450},[5212,16929,7689],{"class":5356},[5212,16931,6402],{"class":5469},[5212,16933,7694],{"class":5356},[5212,16935,16936,16938,16940,16942,16944,16946,16948],{"class":5214,"line":5221},[5212,16937,15896],{"class":5356},[5212,16939,5482],{"class":5475},[5212,16941,5485],{"class":5356},[5212,16943,5488],{"class":5469},[5212,16945,5491],{"class":5356},[5212,16947,5494],{"class":5349},[5212,16949,5497],{"class":5356},[5212,16951,16952],{"class":5214,"line":5227},[5212,16953,16954],{"class":5547},"    \u002F\u002F Перевірка унікальності email\n",[5212,16956,16957,16959,16962,16964,16966,16968,16970,16972,16974,16976],{"class":5214,"line":5233},[5212,16958,7173],{"class":7450},[5212,16960,16961],{"class":5469}," existingUser",[5212,16963,5762],{"class":5356},[5212,16965,5466],{"class":5465},[5212,16967,5505],{"class":5469},[5212,16969,5314],{"class":5356},[5212,16971,6878],{"class":5475},[5212,16973,5479],{"class":5356},[5212,16975,6402],{"class":5469},[5212,16977,6014],{"class":5356},[5212,16979,16980,16982,16984,16986,16988,16990,16992],{"class":5214,"line":5239},[5212,16981,14319],{"class":5469},[5212,16983,6893],{"class":5356},[5212,16985,8075],{"class":5469},[5212,16987,7760],{"class":5469},[5212,16989,5314],{"class":5356},[5212,16991,7254],{"class":5469},[5212,16993,6119],{"class":5356},[5212,16995,16996],{"class":5214,"line":5245},[5212,16997,7911],{"class":5356},[5212,16999,17000],{"class":5214,"line":5251},[5212,17001,5662],{"emptyLinePlaceholder":5661},[5212,17003,17004,17006,17008,17011],{"class":5214,"line":5257},[5212,17005,8565],{"class":5475},[5212,17007,5485],{"class":5356},[5212,17009,17010],{"class":5469},"existingUser",[5212,17012,6948],{"class":5356},[5212,17014,17015,17017,17019,17022,17024,17027],{"class":5214,"line":5263},[5212,17016,8573],{"class":5465},[5212,17018,6956],{"class":5349},[5212,17020,17021],{"class":5475}," ConflictException",[5212,17023,5479],{"class":5356},[5212,17025,17026],{"class":5384},"'Email already exists'",[5212,17028,5656],{"class":5356},[5212,17030,17031],{"class":5214,"line":5269},[5212,17032,7342],{"class":5356},[5212,17034,17035],{"class":5214,"line":5275},[5212,17036,5662],{"emptyLinePlaceholder":5661},[5212,17038,17039],{"class":5214,"line":5281},[5212,17040,17041],{"class":5547},"    \u002F\u002F 1. Створити користувача\n",[5212,17043,17044,17046,17048,17050,17052,17054,17056,17058,17060,17062],{"class":5214,"line":5287},[5212,17045,7173],{"class":7450},[5212,17047,6546],{"class":5469},[5212,17049,5762],{"class":5356},[5212,17051,5466],{"class":5465},[5212,17053,5505],{"class":5469},[5212,17055,5314],{"class":5356},[5212,17057,6006],{"class":5475},[5212,17059,5479],{"class":5356},[5212,17061,6402],{"class":5469},[5212,17063,6014],{"class":5356},[5212,17065,17066,17069,17071,17073,17075],{"class":5214,"line":5293},[5212,17067,17068],{"class":5469},"      email:",[5212,17070,7760],{"class":5469},[5212,17072,5314],{"class":5356},[5212,17074,7254],{"class":5469},[5212,17076,6025],{"class":5356},[5212,17078,17079,17082,17084,17086,17088,17090,17092,17094,17096,17099,17101,17103],{"class":5214,"line":6165},[5212,17080,17081],{"class":5469},"      passwordHash:",[5212,17083,6580],{"class":5465},[5212,17085,6583],{"class":5469},[5212,17087,5314],{"class":5356},[5212,17089,6588],{"class":5475},[5212,17091,5479],{"class":5356},[5212,17093,7675],{"class":5469},[5212,17095,5314],{"class":5356},[5212,17097,17098],{"class":5469},"password",[5212,17100,5888],{"class":5356},[5212,17102,6598],{"class":5374},[5212,17104,6601],{"class":5356},[5212,17106,17107,17110,17112],{"class":5214,"line":6171},[5212,17108,17109],{"class":5469},"      isActive:",[5212,17111,6733],{"class":5349},[5212,17113,6025],{"class":5356},[5212,17115,17116],{"class":5214,"line":6207},[5212,17117,7911],{"class":5356},[5212,17119,17120],{"class":5214,"line":6239},[5212,17121,5662],{"emptyLinePlaceholder":5661},[5212,17123,17124],{"class":5214,"line":6244},[5212,17125,17126],{"class":5547},"    \u002F\u002F 2. Створити профіль\n",[5212,17128,17129,17131,17133,17135,17137,17139,17141],{"class":5214,"line":6250},[5212,17130,8060],{"class":7450},[5212,17132,5505],{"class":7450},[5212,17134,5314],{"class":5356},[5212,17136,6006],{"class":7450},[5212,17138,5479],{"class":5356},[5212,17140,6629],{"class":5469},[5212,17142,6014],{"class":5356},[5212,17144,17145,17148,17150,17152,17154,17156],{"class":5214,"line":6738},[5212,17146,17147],{"class":5469},"      userId",[5212,17149,7447],{"class":5356},[5212,17151,7249],{"class":5469},[5212,17153,5314],{"class":5356},[5212,17155,6092],{"class":5469},[5212,17157,6025],{"class":5356},[5212,17159,17160,17163,17165,17167,17169,17171],{"class":5214,"line":6743},[5212,17161,17162],{"class":5469},"      firstName",[5212,17164,7447],{"class":5356},[5212,17166,7675],{"class":5469},[5212,17168,5314],{"class":5356},[5212,17170,7856],{"class":5469},[5212,17172,6025],{"class":5356},[5212,17174,17175,17178,17180,17182,17184,17186],{"class":5214,"line":6748},[5212,17176,17177],{"class":5469},"      lastName",[5212,17179,7447],{"class":5356},[5212,17181,7675],{"class":5469},[5212,17183,5314],{"class":5356},[5212,17185,7870],{"class":5469},[5212,17187,6025],{"class":5356},[5212,17189,17190],{"class":5214,"line":6754},[5212,17191,7911],{"class":5356},[5212,17193,17194],{"class":5214,"line":6772},[5212,17195,5662],{"emptyLinePlaceholder":5661},[5212,17197,17198],{"class":5214,"line":6785},[5212,17199,17200],{"class":5547},"    \u002F\u002F 3. Створити налаштування за замовчуванням\n",[5212,17202,17203,17205,17207,17209,17211,17213,17215],{"class":5214,"line":6799},[5212,17204,8060],{"class":7450},[5212,17206,5505],{"class":7450},[5212,17208,5314],{"class":5356},[5212,17210,6006],{"class":7450},[5212,17212,5479],{"class":5356},[5212,17214,6691],{"class":5469},[5212,17216,6014],{"class":5356},[5212,17218,17219,17221,17223,17225,17227,17229],{"class":5214,"line":6804},[5212,17220,17147],{"class":5469},[5212,17222,7447],{"class":5356},[5212,17224,7249],{"class":5469},[5212,17226,5314],{"class":5356},[5212,17228,6092],{"class":5469},[5212,17230,6025],{"class":5356},[5212,17232,17233,17236,17238,17241],{"class":5214,"line":7914},[5212,17234,17235],{"class":5469},"      theme",[5212,17237,7447],{"class":5356},[5212,17239,17240],{"class":5384},"'system'",[5212,17242,6025],{"class":5356},[5212,17244,17245,17248,17250,17253],{"class":5214,"line":7919},[5212,17246,17247],{"class":5469},"      language",[5212,17249,7447],{"class":5356},[5212,17251,17252],{"class":5384},"'uk'",[5212,17254,6025],{"class":5356},[5212,17256,17257,17260,17262,17264],{"class":5214,"line":8719},[5212,17258,17259],{"class":5469},"      notifications",[5212,17261,7447],{"class":5356},[5212,17263,16356],{"class":5469},[5212,17265,6025],{"class":5356},[5212,17267,17268],{"class":5214,"line":8727},[5212,17269,7911],{"class":5356},[5212,17271,17272],{"class":5214,"line":8740},[5212,17273,5662],{"emptyLinePlaceholder":5661},[5212,17275,17276],{"class":5214,"line":8745},[5212,17277,17278],{"class":5547},"    \u002F\u002F 4. Призначити роль за замовчуванням\n",[5212,17280,17281,17283,17286,17288,17290,17292,17294,17296,17298,17301,17303,17305,17307,17310,17313],{"class":5214,"line":8750},[5212,17282,7173],{"class":7450},[5212,17284,17285],{"class":5469}," defaultRole",[5212,17287,5762],{"class":5356},[5212,17289,5466],{"class":5465},[5212,17291,5505],{"class":5469},[5212,17293,5314],{"class":5356},[5212,17295,6878],{"class":5475},[5212,17297,5479],{"class":5356},[5212,17299,17300],{"class":5469},"Role",[5212,17302,5518],{"class":5356},[5212,17304,7196],{"class":5469},[5212,17306,6893],{"class":5356},[5212,17308,17309],{"class":5469},"name:",[5212,17311,17312],{"class":5384}," 'user'",[5212,17314,7206],{"class":5356},[5212,17316,17317,17319,17321,17323,17325,17327,17329],{"class":5214,"line":11232},[5212,17318,8060],{"class":7450},[5212,17320,5505],{"class":7450},[5212,17322,5314],{"class":5356},[5212,17324,6006],{"class":7450},[5212,17326,5479],{"class":5356},[5212,17328,6767],{"class":5469},[5212,17330,6014],{"class":5356},[5212,17332,17333,17335,17337,17339,17341,17343],{"class":5214,"line":11238},[5212,17334,17147],{"class":5469},[5212,17336,7447],{"class":5356},[5212,17338,7249],{"class":5469},[5212,17340,5314],{"class":5356},[5212,17342,6092],{"class":5469},[5212,17344,6025],{"class":5356},[5212,17346,17347,17350,17352,17355,17357,17359],{"class":5214,"line":11255},[5212,17348,17349],{"class":5469},"      roleId",[5212,17351,7447],{"class":5356},[5212,17353,17354],{"class":5469},"defaultRole",[5212,17356,5314],{"class":5356},[5212,17358,6092],{"class":5469},[5212,17360,6025],{"class":5356},[5212,17362,17363],{"class":5214,"line":11263},[5212,17364,7911],{"class":5356},[5212,17366,17367],{"class":5214,"line":11279},[5212,17368,5662],{"emptyLinePlaceholder":5661},[5212,17370,17371],{"class":5214,"line":11287},[5212,17372,17373],{"class":5547},"    \u002F\u002F 5. Створити запис у аудит лозі\n",[5212,17375,17376,17378,17380,17382,17384,17386,17389],{"class":5214,"line":11298},[5212,17377,8060],{"class":7450},[5212,17379,5505],{"class":7450},[5212,17381,5314],{"class":5356},[5212,17383,6006],{"class":7450},[5212,17385,5479],{"class":5356},[5212,17387,17388],{"class":5469},"AuditLog",[5212,17390,6014],{"class":5356},[5212,17392,17393,17395,17397,17399,17401,17403],{"class":5214,"line":11304},[5212,17394,17147],{"class":5469},[5212,17396,7447],{"class":5356},[5212,17398,7249],{"class":5469},[5212,17400,5314],{"class":5356},[5212,17402,6092],{"class":5469},[5212,17404,6025],{"class":5356},[5212,17406,17407,17410,17412,17415],{"class":5214,"line":11309},[5212,17408,17409],{"class":5469},"      action",[5212,17411,7447],{"class":5356},[5212,17413,17414],{"class":5384},"'user_registered'",[5212,17416,6025],{"class":5356},[5212,17418,17419,17422,17425,17427,17429,17431,17433,17435],{"class":5214,"line":11334},[5212,17420,17421],{"class":5469},"      metadata",[5212,17423,17424],{"class":5356},": { ",[5212,17426,7254],{"class":5469},[5212,17428,7447],{"class":5356},[5212,17430,7675],{"class":5469},[5212,17432,5314],{"class":5356},[5212,17434,7254],{"class":5469},[5212,17436,6119],{"class":5356},[5212,17438,17439],{"class":5214,"line":11339},[5212,17440,7911],{"class":5356},[5212,17442,17443],{"class":5214,"line":11344},[5212,17444,5662],{"emptyLinePlaceholder":5661},[5212,17446,17447,17449,17451],{"class":5214,"line":11350},[5212,17448,7699],{"class":7450},[5212,17450,6546],{"class":5469},[5212,17452,5357],{"class":5356},[5212,17454,17455],{"class":5214,"line":11386},[5212,17456,6050],{"class":5356},[5212,17458,17459],{"class":5214,"line":11391},[5212,17460,7396],{"class":5356},[5177,17462],{},[5180,17464,17466],{"id":17465},"підсумки","Підсумки",[5084,17468,17469,17510,17555],{},[5087,17470,17473],{"icon":17471,"title":17472},"i-lucide-check-circle","✅ Що ми опанували",[5092,17474,17475,17481,17487,17492,17498,17504],{},[5095,17476,17477,17480],{},[5136,17478,17479],{},"Концепцію транзакцій та ACID:"," Зрозуміли атомарність, узгодженість, ізольованість та довговічність як фундаментальні властивості надійних транзакцій.",[5095,17482,17483,17486],{},[5136,17484,17485],{},"DataSource.transaction():"," Навчилися використовувати простий API з автоматичним commit\u002Frollback для більшості сценаріїв.",[5095,17488,17489,17491],{},[5136,17490,5174],{}," Освоїли ручне керування транзакціями для складних сценаріїв з повним контролем.",[5095,17493,17494,17497],{},[5136,17495,17496],{},"Рівні ізоляції:"," Вивчили READ COMMITTED, REPEATABLE READ, SERIALIZABLE та їх вплив на продуктивність і консистентність.",[5095,17499,17500,17503],{},[5136,17501,17502],{},"Deadlocks:"," Зрозуміли причини взаємного блокування та стратегії уникнення через впорядковане блокування ресурсів.",[5095,17505,17506,17509],{},[5136,17507,17508],{},"Performance:"," Опанували best practices для мінімізації часу транзакцій та винесення I\u002FO операцій за їх межі.",[5087,17511,17514],{"icon":17512,"title":17513},"i-lucide-alert-triangle","⚠️ Важливі застереження",[5092,17515,17516,17522,17531,17537,17543,17549],{},[5095,17517,17518,17521],{},[5136,17519,17520],{},"Завжди використовуйте transactional manager"," — операції через repository поза транзакцією не відкотяться при помилці.",[5095,17523,17524,17527,17528,17530],{},[5136,17525,17526],{},"Завжди викликайте queryRunner.release()"," у ",[5110,17529,10304],{}," блоці — інакше витік з'єднань призведе до вичерпання connection pool.",[5095,17532,17533,17536],{},[5136,17534,17535],{},"Мінімізуйте час транзакції"," — виносьте HTTP запити, обробку файлів та інші повільні операції за межі транзакції.",[5095,17538,17539,17542],{},[5136,17540,17541],{},"Блокуйте ресурси у фіксованому порядку"," — це запобігає deadlocks у багатокористувацьких системах.",[5095,17544,17545,17548],{},[5136,17546,17547],{},"Використовуйте retry logic"," для serialization failures та deadlocks у критичних операціях.",[5095,17550,17551,17554],{},[5136,17552,17553],{},"READ COMMITTED за замовчуванням"," — підвищуйте до REPEATABLE READ лише для критичних операцій з суворою консистентністю.",[5087,17556,17558,17565],{"icon":15,"title":17557},"📚 Що далі",[5190,17559,17560,17561,17564],{},"У наступній лекції ми розглянемо ",[5136,17562,17563],{},"індекси та оптимізацію запитів"," у TypeORM:",[5092,17566,17567,17570,17573,17576,17579,17582],{},[5095,17568,17569],{},"Типи індексів: B-tree, Hash, GIN, GiST.",[5095,17571,17572],{},"Створення індексів через декоратори Entity.",[5095,17574,17575],{},"EXPLAIN ANALYZE для аналізу продуктивності запитів.",[5095,17577,17578],{},"Composite індекси та partial індекси.",[5095,17580,17581],{},"N+1 проблема та eager loading стратегії.",[5095,17583,17584],{},"Кешування запитів та результатів.",[5177,17586],{},[5180,17588,17590],{"id":17589},"запитання-для-самоконтролю","Запитання для самоконтролю",[17592,17593,17594,17722,17826,17895,18285],"accordion",{},[17595,17596,17599,17609,17613],"accordion-item",{"icon":17597,"label":17598},"i-lucide-help-circle","❓ Чому операції через repository не входять у транзакцію DataSource.transaction()?",[5190,17600,17601,17602,17604,17605,17608],{},"Repository використовує ",[5136,17603,8414],{}," з БД, не пов'язане з transactional EntityManager. Операції через repository виконуються поза контекстом транзакції і ",[5136,17606,17607],{},"не відкотяться"," при помилці у callback.",[5190,17610,17611],{},[5136,17612,9774],{},[5204,17614,17616],{"className":5456,"code":17615,"language":5458,"meta":5208,"style":5208},"await dataSource.transaction(async (manager) => {\n  \u002F\u002F ✅ Використовуйте manager, а не repository\n  await manager.save(User, { email: 'user@example.com' });\n  \n  \u002F\u002F Або отримайте transactional repository\n  const userRepo = manager.getRepository(User);\n  await userRepo.save({ email: 'another@example.com' });\n});\n",[5110,17617,17618,17642,17647,17669,17673,17678,17699,17718],{"__ignoreMap":5208},[5212,17619,17620,17622,17624,17626,17628,17630,17632,17634,17636,17638,17640],{"class":5214,"line":5215},[5212,17621,5466],{"class":5465},[5212,17623,5470],{"class":5469},[5212,17625,5314],{"class":5356},[5212,17627,5476],{"class":5475},[5212,17629,5479],{"class":5356},[5212,17631,5482],{"class":5349},[5212,17633,5485],{"class":5356},[5212,17635,5488],{"class":5469},[5212,17637,5491],{"class":5356},[5212,17639,5494],{"class":5349},[5212,17641,5497],{"class":5356},[5212,17643,17644],{"class":5214,"line":5221},[5212,17645,17646],{"class":5547},"  \u002F\u002F ✅ Використовуйте manager, а не repository\n",[5212,17648,17649,17651,17653,17655,17657,17659,17661,17663,17665,17667],{"class":5214,"line":5227},[5212,17650,5502],{"class":5465},[5212,17652,5505],{"class":5469},[5212,17654,5314],{"class":5356},[5212,17656,6006],{"class":5475},[5212,17658,5479],{"class":5356},[5212,17660,6402],{"class":5469},[5212,17662,5518],{"class":5356},[5212,17664,8075],{"class":5469},[5212,17666,6570],{"class":5384},[5212,17668,7018],{"class":5356},[5212,17670,17671],{"class":5214,"line":5233},[5212,17672,9726],{"class":5356},[5212,17674,17675],{"class":5214,"line":5239},[5212,17676,17677],{"class":5547},"  \u002F\u002F Або отримайте transactional repository\n",[5212,17679,17680,17682,17685,17687,17689,17691,17693,17695,17697],{"class":5214,"line":5245},[5212,17681,5992],{"class":5349},[5212,17683,17684],{"class":5744}," userRepo",[5212,17686,5762],{"class":5356},[5212,17688,5488],{"class":5469},[5212,17690,5314],{"class":5356},[5212,17692,9923],{"class":5475},[5212,17694,5479],{"class":5356},[5212,17696,6402],{"class":5469},[5212,17698,5656],{"class":5356},[5212,17700,17701,17703,17705,17707,17709,17711,17713,17716],{"class":5214,"line":5251},[5212,17702,5502],{"class":5465},[5212,17704,17684],{"class":5469},[5212,17706,5314],{"class":5356},[5212,17708,6006],{"class":5475},[5212,17710,8304],{"class":5356},[5212,17712,8075],{"class":5469},[5212,17714,17715],{"class":5384}," 'another@example.com'",[5212,17717,7018],{"class":5356},[5212,17719,17720],{"class":5214,"line":5257},[5212,17721,5597],{"class":5356},[17595,17723,17725,17734,17754,17764],{"icon":17597,"label":17724},"❓ Що станеться, якщо забути викликати queryRunner.release()?",[5190,17726,10787,17727,17729,17730,17733],{},[5110,17728,10790],{},", з'єднання з БД ",[5136,17731,17732],{},"залишається зайнятим"," і не повертається у connection pool. При великій кількості запитів це призведе до:",[5306,17735,17736,17742,17748],{},[5095,17737,17738,17741],{},[5136,17739,17740],{},"Вичерпання пулу з'єднань"," — нові запити не зможуть отримати з'єднання.",[5095,17743,17744,17747],{},[5136,17745,17746],{},"TimeoutError"," — запити чекатимуть на з'єднання до timeout.",[5095,17749,17750,17753],{},[5136,17751,17752],{},"Зависання застосунку"," — API перестане відповідати.",[5190,17755,17756],{},[5136,17757,17758,17759,17527,17761,17763],{},"Завжди викликайте ",[5110,17760,10790],{},[5110,17762,10304],{}," блоці:",[5204,17765,17767],{"className":5456,"code":17766,"language":5458,"meta":5208,"style":5208},"const queryRunner = this.dataSource.createQueryRunner();\ntry {\n  \u002F\u002F Операції\n} finally {\n  await queryRunner.release(); \u002F\u002F ✅ Обов'язково\n}\n",[5110,17768,17769,17789,17795,17799,17807,17822],{"__ignoreMap":5208},[5212,17770,17771,17773,17775,17777,17779,17781,17783,17785,17787],{"class":5214,"line":5215},[5212,17772,7220],{"class":5349},[5212,17774,10043],{"class":5744},[5212,17776,5762],{"class":5356},[5212,17778,10048],{"class":5349},[5212,17780,5314],{"class":5356},[5212,17782,7707],{"class":5469},[5212,17784,5314],{"class":5356},[5212,17786,10057],{"class":5475},[5212,17788,9460],{"class":5356},[5212,17790,17791,17793],{"class":5214,"line":5221},[5212,17792,7142],{"class":5465},[5212,17794,5497],{"class":5356},[5212,17796,17797],{"class":5214,"line":5227},[5212,17798,15218],{"class":5547},[5212,17800,17801,17803,17805],{"class":5214,"line":5233},[5212,17802,7351],{"class":5356},[5212,17804,10304],{"class":5465},[5212,17806,5497],{"class":5356},[5212,17808,17809,17811,17813,17815,17817,17819],{"class":5214,"line":5239},[5212,17810,5502],{"class":5465},[5212,17812,10043],{"class":5469},[5212,17814,5314],{"class":5356},[5212,17816,10322],{"class":5475},[5212,17818,10769],{"class":5356},[5212,17820,17821],{"class":5547},"\u002F\u002F ✅ Обов'язково\n",[5212,17823,17824],{"class":5214,"line":5245},[5212,17825,7396],{"class":5356},[17595,17827,17829,17834,17862,17867,17890],{"icon":17597,"label":17828},"❓ Яка різниця між READ COMMITTED та REPEATABLE READ?",[5190,17830,17831],{},[5136,17832,17833],{},"READ COMMITTED:",[5092,17835,17836,17843,17850,17856],{},[5095,17837,17838,17839,17842],{},"Транзакція бачить ",[5136,17840,17841],{},"зафіксовані зміни"," інших транзакцій.",[5095,17844,17845,17846,17849],{},"При повторному читанні того самого запису може побачити ",[5136,17847,17848],{},"інше значення"," (non-repeatable read).",[5095,17851,17852,17855],{},[5136,17853,17854],{},"За замовчуванням"," у PostgreSQL.",[5095,17857,17858,17861],{},[5136,17859,17860],{},"Вища продуктивність",", менше блокувань.",[5190,17863,17864],{},[5136,17865,17866],{},"REPEATABLE READ:",[5092,17868,17869,17873,17879,17885],{},[5095,17870,17838,17871,12175],{},[5136,17872,12174],{},[5095,17874,17875,17876,5314],{},"При повторному читанні того самого запису завжди побачить ",[5136,17877,17878],{},"те саме значення",[5095,17880,17881,17884],{},[5136,17882,17883],{},"Суворіша консистентність",", критична для фінансових операцій.",[5095,17886,17887,12574],{},[5136,17888,17889],{},"Нижча продуктивність",[5190,17891,17892,17894],{},[5136,17893,9055],{}," Використовуйте READ COMMITTED для звичайних операцій та REPEATABLE READ для критичних операцій з суворою консистентністю.",[17595,17896,17898,17903,17906,18006,18011,18279],{"icon":17597,"label":17897},"❓ Як уникнути deadlocks при одночасних переказах між рахунками?",[5190,17899,17900],{},[5136,17901,17902],{},"Проблема:",[5190,17904,17905],{},"Дві транзакції блокують рахунки у різному порядку:",[5204,17907,17909],{"className":5456,"code":17908,"language":5458,"meta":5208,"style":5208},"\u002F\u002F Транзакція 1: A → B\nUPDATE accounts WHERE id = 1; \u002F\u002F Блокує A\nUPDATE accounts WHERE id = 2; \u002F\u002F Чекає B\n\n\u002F\u002F Транзакція 2: B → A\nUPDATE accounts WHERE id = 2; \u002F\u002F Блокує B\nUPDATE accounts WHERE id = 1; \u002F\u002F Чекає A\n\u002F\u002F ❌ DEADLOCK!\n",[5110,17910,17911,17916,17935,17954,17958,17963,17982,18001],{"__ignoreMap":5208},[5212,17912,17913],{"class":5214,"line":5215},[5212,17914,17915],{"class":5547},"\u002F\u002F Транзакція 1: A → B\n",[5212,17917,17918,17920,17922,17924,17926,17928,17930,17932],{"class":5214,"line":5221},[5212,17919,5362],{"class":5744},[5212,17921,5753],{"class":5469},[5212,17923,5378],{"class":5744},[5212,17925,5774],{"class":5469},[5212,17927,5762],{"class":5356},[5212,17929,6234],{"class":5374},[5212,17931,12871],{"class":5356},[5212,17933,17934],{"class":5547},"\u002F\u002F Блокує A\n",[5212,17936,17937,17939,17941,17943,17945,17947,17949,17951],{"class":5214,"line":5227},[5212,17938,5362],{"class":5744},[5212,17940,5753],{"class":5469},[5212,17942,5378],{"class":5744},[5212,17944,5774],{"class":5469},[5212,17946,5762],{"class":5356},[5212,17948,6202],{"class":5374},[5212,17950,12871],{"class":5356},[5212,17952,17953],{"class":5547},"\u002F\u002F Чекає B\n",[5212,17955,17956],{"class":5214,"line":5233},[5212,17957,5662],{"emptyLinePlaceholder":5661},[5212,17959,17960],{"class":5214,"line":5239},[5212,17961,17962],{"class":5547},"\u002F\u002F Транзакція 2: B → A\n",[5212,17964,17965,17967,17969,17971,17973,17975,17977,17979],{"class":5214,"line":5245},[5212,17966,5362],{"class":5744},[5212,17968,5753],{"class":5469},[5212,17970,5378],{"class":5744},[5212,17972,5774],{"class":5469},[5212,17974,5762],{"class":5356},[5212,17976,6202],{"class":5374},[5212,17978,12871],{"class":5356},[5212,17980,17981],{"class":5547},"\u002F\u002F Блокує B\n",[5212,17983,17984,17986,17988,17990,17992,17994,17996,17998],{"class":5214,"line":5251},[5212,17985,5362],{"class":5744},[5212,17987,5753],{"class":5469},[5212,17989,5378],{"class":5744},[5212,17991,5774],{"class":5469},[5212,17993,5762],{"class":5356},[5212,17995,6234],{"class":5374},[5212,17997,12871],{"class":5356},[5212,17999,18000],{"class":5547},"\u002F\u002F Чекає A\n",[5212,18002,18003],{"class":5214,"line":5257},[5212,18004,18005],{"class":5547},"\u002F\u002F ❌ DEADLOCK!\n",[5190,18007,18008],{},[5136,18009,18010],{},"Рішення — впорядковане блокування:",[5204,18012,18014],{"className":5456,"code":18013,"language":5458,"meta":5208,"style":5208},"async transferMoney(fromId: number, toId: number, amount: number) {\n  await dataSource.transaction(async (manager) => {\n    \u002F\u002F Сортуємо ID для фіксованого порядку блокування\n    const [firstId, secondId] = [fromId, toId].sort((a, b) => a - b);\n\n    \u002F\u002F Блокуємо завжди у порядку зростання ID\n    await manager.findOne(Account, { where: { id: firstId }, lock: { mode: 'pessimistic_write' } });\n    await manager.findOne(Account, { where: { id: secondId }, lock: { mode: 'pessimistic_write' } });\n\n    \u002F\u002F Виконуємо переказ\n    await manager.decrement(Account, { id: fromId }, 'balance', amount);\n    await manager.increment(Account, { id: toId }, 'balance', amount);\n  });\n}\n",[5110,18015,18016,18048,18072,18077,18121,18125,18130,18167,18203,18207,18211,18241,18271,18275],{"__ignoreMap":5208},[5212,18017,18018,18020,18022,18024,18026,18028,18030,18032,18034,18036,18038,18040,18042,18044,18046],{"class":5214,"line":5215},[5212,18019,5482],{"class":5469},[5212,18021,8439],{"class":5475},[5212,18023,5479],{"class":5356},[5212,18025,14190],{"class":5469},[5212,18027,7447],{"class":5356},[5212,18029,8449],{"class":5469},[5212,18031,5888],{"class":5356},[5212,18033,14199],{"class":5469},[5212,18035,7447],{"class":5356},[5212,18037,8449],{"class":5469},[5212,18039,5888],{"class":5356},[5212,18041,8463],{"class":5469},[5212,18043,7447],{"class":5356},[5212,18045,8449],{"class":5469},[5212,18047,6948],{"class":5356},[5212,18049,18050,18052,18054,18056,18058,18060,18062,18064,18066,18068,18070],{"class":5214,"line":5221},[5212,18051,5502],{"class":5465},[5212,18053,5470],{"class":5469},[5212,18055,5314],{"class":5356},[5212,18057,5476],{"class":5475},[5212,18059,5479],{"class":5356},[5212,18061,5482],{"class":5349},[5212,18063,5485],{"class":5356},[5212,18065,5488],{"class":5469},[5212,18067,5491],{"class":5356},[5212,18069,5494],{"class":5349},[5212,18071,5497],{"class":5356},[5212,18073,18074],{"class":5214,"line":5227},[5212,18075,18076],{"class":5547},"    \u002F\u002F Сортуємо ID для фіксованого порядку блокування\n",[5212,18078,18079,18081,18083,18085,18087,18089,18091,18093,18095,18097,18099,18101,18103,18105,18107,18109,18111,18113,18115,18117,18119],{"class":5214,"line":5233},[5212,18080,7173],{"class":5349},[5212,18082,14244],{"class":5356},[5212,18084,14247],{"class":5744},[5212,18086,5888],{"class":5356},[5212,18088,14252],{"class":5744},[5212,18090,15928],{"class":5356},[5212,18092,14190],{"class":5469},[5212,18094,5888],{"class":5356},[5212,18096,14199],{"class":5469},[5212,18098,14952],{"class":5356},[5212,18100,14955],{"class":5475},[5212,18102,14958],{"class":5356},[5212,18104,14961],{"class":5469},[5212,18106,5888],{"class":5356},[5212,18108,14966],{"class":5469},[5212,18110,5491],{"class":5356},[5212,18112,5494],{"class":5349},[5212,18114,14973],{"class":5469},[5212,18116,5767],{"class":5356},[5212,18118,14966],{"class":5469},[5212,18120,5656],{"class":5356},[5212,18122,18123],{"class":5214,"line":5239},[5212,18124,5662],{"emptyLinePlaceholder":5661},[5212,18126,18127],{"class":5214,"line":5245},[5212,18128,18129],{"class":5547},"    \u002F\u002F Блокуємо завжди у порядку зростання ID\n",[5212,18131,18132,18134,18136,18138,18140,18142,18144,18146,18148,18150,18152,18154,18156,18159,18161,18163,18165],{"class":5214,"line":5251},[5212,18133,8060],{"class":5465},[5212,18135,5505],{"class":5469},[5212,18137,5314],{"class":5356},[5212,18139,6878],{"class":5475},[5212,18141,5479],{"class":5356},[5212,18143,5515],{"class":5469},[5212,18145,5518],{"class":5356},[5212,18147,7196],{"class":5469},[5212,18149,6893],{"class":5356},[5212,18151,5521],{"class":5469},[5212,18153,14326],{"class":5469},[5212,18155,6194],{"class":5356},[5212,18157,18158],{"class":5469},"lock:",[5212,18160,6893],{"class":5356},[5212,18162,6918],{"class":5469},[5212,18164,6921],{"class":5384},[5212,18166,7206],{"class":5356},[5212,18168,18169,18171,18173,18175,18177,18179,18181,18183,18185,18187,18189,18191,18193,18195,18197,18199,18201],{"class":5214,"line":5257},[5212,18170,8060],{"class":5465},[5212,18172,5505],{"class":5469},[5212,18174,5314],{"class":5356},[5212,18176,6878],{"class":5475},[5212,18178,5479],{"class":5356},[5212,18180,5515],{"class":5469},[5212,18182,5518],{"class":5356},[5212,18184,7196],{"class":5469},[5212,18186,6893],{"class":5356},[5212,18188,5521],{"class":5469},[5212,18190,14383],{"class":5469},[5212,18192,6194],{"class":5356},[5212,18194,18158],{"class":5469},[5212,18196,6893],{"class":5356},[5212,18198,6918],{"class":5469},[5212,18200,6921],{"class":5384},[5212,18202,7206],{"class":5356},[5212,18204,18205],{"class":5214,"line":5263},[5212,18206,5662],{"emptyLinePlaceholder":5661},[5212,18208,18209],{"class":5214,"line":5269},[5212,18210,14410],{"class":5547},[5212,18212,18213,18215,18217,18219,18221,18223,18225,18227,18229,18231,18233,18235,18237,18239],{"class":5214,"line":5275},[5212,18214,8060],{"class":5465},[5212,18216,5505],{"class":5469},[5212,18218,5314],{"class":5356},[5212,18220,6180],{"class":5475},[5212,18222,5479],{"class":5356},[5212,18224,5515],{"class":5469},[5212,18226,5518],{"class":5356},[5212,18228,5521],{"class":5469},[5212,18230,14445],{"class":5469},[5212,18232,6194],{"class":5356},[5212,18234,6413],{"class":5384},[5212,18236,5888],{"class":5356},[5212,18238,8463],{"class":5469},[5212,18240,5656],{"class":5356},[5212,18242,18243,18245,18247,18249,18251,18253,18255,18257,18259,18261,18263,18265,18267,18269],{"class":5214,"line":5281},[5212,18244,8060],{"class":5465},[5212,18246,5505],{"class":5469},[5212,18248,5314],{"class":5356},[5212,18250,6397],{"class":5475},[5212,18252,5479],{"class":5356},[5212,18254,5515],{"class":5469},[5212,18256,5518],{"class":5356},[5212,18258,5521],{"class":5469},[5212,18260,14476],{"class":5469},[5212,18262,6194],{"class":5356},[5212,18264,6413],{"class":5384},[5212,18266,5888],{"class":5356},[5212,18268,8463],{"class":5469},[5212,18270,5656],{"class":5356},[5212,18272,18273],{"class":5214,"line":5287},[5212,18274,6050],{"class":5356},[5212,18276,18277],{"class":5214,"line":5293},[5212,18278,7396],{"class":5356},[5190,18280,18281,18284],{},[5136,18282,18283],{},"Тепер обидві транзакції блокують рахунки у одному порядку"," → deadlock неможливий.",[17595,18286,18288,18294,18314,18321],{"icon":17597,"label":18287},"❓ Чому повільні операції (HTTP запити, файли) мають бути поза транзакцією?",[5190,18289,18290,18291,18293],{},"Транзакція тримає ",[5136,18292,15293],{}," на записах, які вона змінює. Повільні операції всередині транзакції призводять до:",[5306,18295,18296,18302,18308],{},[5095,18297,18298,18301],{},[5136,18299,18300],{},"Довгих блокувань"," — інші транзакції чекають на звільнення ресурсів.",[5095,18303,18304,18307],{},[5136,18305,18306],{},"Зниження throughput"," — менше одночасних операцій.",[5095,18309,18310,18313],{},[5136,18311,18312],{},"Збільшення ймовірності deadlocks"," — більше транзакцій конкурують за ресурси.",[5190,18315,18316,15299,18318,18320],{},[5136,18317,9055],{},[5136,18319,15302],{},". Виносьте повільні операції після commit:",[5204,18322,18324],{"className":5456,"code":18323,"language":5458,"meta":5208,"style":5208},"\u002F\u002F ✅ Правильно\nconst order = await dataSource.transaction(async (manager) => {\n  return manager.save(Order, orderData); \u002F\u002F Швидко\n});\n\n\u002F\u002F Повільні операції після commit\nawait sendEmail(user.email, 'Order created');\nawait uploadInvoice(order.id);\n",[5110,18325,18326,18331,18361,18384,18388,18392,18397,18417],{"__ignoreMap":5208},[5212,18327,18328],{"class":5214,"line":5215},[5212,18329,18330],{"class":5547},"\u002F\u002F ✅ Правильно\n",[5212,18332,18333,18335,18337,18339,18341,18343,18345,18347,18349,18351,18353,18355,18357,18359],{"class":5214,"line":5221},[5212,18334,7220],{"class":5349},[5212,18336,5995],{"class":5744},[5212,18338,5762],{"class":5356},[5212,18340,5466],{"class":5465},[5212,18342,5470],{"class":5469},[5212,18344,5314],{"class":5356},[5212,18346,5476],{"class":5475},[5212,18348,5479],{"class":5356},[5212,18350,5482],{"class":5349},[5212,18352,5485],{"class":5356},[5212,18354,5488],{"class":5469},[5212,18356,5491],{"class":5356},[5212,18358,5494],{"class":5349},[5212,18360,5497],{"class":5356},[5212,18362,18363,18365,18367,18369,18371,18373,18375,18377,18379,18381],{"class":5214,"line":5227},[5212,18364,13644],{"class":5465},[5212,18366,5505],{"class":5469},[5212,18368,5314],{"class":5356},[5212,18370,6006],{"class":5475},[5212,18372,5479],{"class":5356},[5212,18374,6011],{"class":5469},[5212,18376,5888],{"class":5356},[5212,18378,10831],{"class":5469},[5212,18380,9020],{"class":5356},[5212,18382,18383],{"class":5547},"\u002F\u002F Швидко\n",[5212,18385,18386],{"class":5214,"line":5233},[5212,18387,5597],{"class":5356},[5212,18389,18390],{"class":5214,"line":5239},[5212,18391,5662],{"emptyLinePlaceholder":5661},[5212,18393,18394],{"class":5214,"line":5245},[5212,18395,18396],{"class":5547},"\u002F\u002F Повільні операції після commit\n",[5212,18398,18399,18401,18403,18405,18407,18409,18411,18413,18415],{"class":5214,"line":5251},[5212,18400,5466],{"class":5465},[5212,18402,14639],{"class":5475},[5212,18404,5479],{"class":5356},[5212,18406,7249],{"class":5469},[5212,18408,5314],{"class":5356},[5212,18410,7254],{"class":5469},[5212,18412,5888],{"class":5356},[5212,18414,14652],{"class":5384},[5212,18416,5656],{"class":5356},[5212,18418,18419,18421,18424,18426,18428,18430,18432],{"class":5214,"line":5257},[5212,18420,5466],{"class":5465},[5212,18422,18423],{"class":5475}," 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