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Primitives","/csharp/system-programming-windows/synchronization-advanced","01.csharp/07.system-programming-windows/07.synchronization-advanced",{"title":308,"path":309,"stem":310},"Синхронізація — Interlocked, Volatile та Lock-Free Структури","/csharp/system-programming-windows/07a.synchronization-advanced-walkthrough","01.csharp/07.system-programming-windows/07a.synchronization-advanced-walkthrough",{"title":312,"path":313,"stem":314},"Interlocked, CAS та Lock-Free Структури","/csharp/system-programming-windows/interlocked-cas-lockfree","01.csharp/07.system-programming-windows/08.interlocked-cas-lockfree",{"title":316,"path":317,"stem":318},"Volatile, Memory Model та Spinning","/csharp/system-programming-windows/08a.volatile-memory-model","01.csharp/07.system-programming-windows/08a.volatile-memory-model",{"title":320,"path":321,"stem":322},"ThreadPool — Пул Потоків для Ефективного 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DbProviderFactory — провайдер-незалежний код","/csharp/ado-net/provider-factory","01.csharp/09.ado-net/07.provider-factory",{"title":438,"path":439,"stem":440},"9.8. Асинхронний доступ до даних","/csharp/ado-net/async-data-access","01.csharp/09.ado-net/08.async-data-access",{"title":442,"path":443,"stem":444},"9.9. Від'єднаний режим: DataSet, DataTable, DataRow","/csharp/ado-net/disconnected-mode-dataset","01.csharp/09.ado-net/09.disconnected-mode-dataset",{"title":446,"path":447,"stem":448},"9.10. DataAdapter — міст між DataSet та базою даних","/csharp/ado-net/data-adapter","01.csharp/09.ado-net/10.data-adapter",{"title":450,"path":451,"stem":452},"9.11. Data Mapper та Repository: Архітектура доступу до даних","/csharp/ado-net/data-mapper-repository","01.csharp/09.ado-net/11.data-mapper-repository",{"title":454,"path":455,"stem":456},"9.12. Identity Map, Unit of Work та Specification Pattern","/csharp/ado-net/advanced-patterns","01.csharp/09.ado-net/12.advanced-patterns",{"title":458,"icon":255,"path":459,"stem":460,"children":461,"page":59},"Ef Core","/csharp/ef-core","01.csharp/10.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","/csharp/ef-core/what-is-orm","01.csharp/10.ef-core/01.what-is-orm",{"title":467,"path":468,"stem":469},"Перший проєкт — від нуля до CRUD","/csharp/ef-core/first-project","01.csharp/10.ef-core/02.first-project",{"title":471,"path":472,"stem":473},"DbContext — Серце EF Core","/csharp/ef-core/dbcontext-deep-dive","01.csharp/10.ef-core/03.dbcontext-deep-dive",{"title":475,"path":476,"stem":477},"Провайдери баз даних — Архітектура та Вибір СУБД","/csharp/ef-core/database-providers","01.csharp/10.ef-core/04.database-providers",{"title":479,"path":480,"stem":481},"Конвенції EF Core — Магія без конфігурації","/csharp/ef-core/conventions","01.csharp/10.ef-core/05.conventions",{"title":483,"path":484,"stem":485},"Fluent API та Data Annotations — Явна конфігурація моделі","/csharp/ef-core/fluent-api-vs-annotations","01.csharp/10.ef-core/06.fluent-api-vs-annotations",{"title":487,"path":488,"stem":489},"Зв'язки — One-to-One та One-to-Many","/csharp/ef-core/relationships-basics","01.csharp/10.ef-core/07.relationships-basics",{"title":491,"path":492,"stem":493},"Зв'язки Advanced — Many-to-Many та Складні Сценарії","/csharp/ef-core/relationships-advanced","01.csharp/10.ef-core/08.relationships-advanced",{"title":495,"path":496,"stem":497},"Властивості — Типи, Конвертери, Компаратори (Частина 1)","/csharp/ef-core/property-configuration-part1","01.csharp/10.ef-core/09.property-configuration-part1",{"title":499,"path":500,"stem":501},"Властивості — Value Comparers, Generators, Shadow Properties (Частина 2)","/csharp/ef-core/property-configuration-part2","01.csharp/10.ef-core/09.property-configuration-part2",{"title":503,"path":504,"stem":505},"Складні типи — Owned Types та Complex Types (Частина 1)","/csharp/ef-core/complex-types-owned-part1","01.csharp/10.ef-core/10.complex-types-owned-part1",{"title":507,"path":508,"stem":509},"Складні типи — Complex Types, Keyless Entities, Порівняння (Частина 2)","/csharp/ef-core/complex-types-owned-part2","01.csharp/10.ef-core/10.complex-types-owned-part2",{"title":511,"path":512,"stem":513},"JSON Columns — Складні дані у JSON (Частина 1)","/csharp/ef-core/json-columns-part1","01.csharp/10.ef-core/11.json-columns-part1",{"title":515,"path":516,"stem":517},"JSON Columns — Value Comparers, Індекси, Провайдери (Частина 2)","/csharp/ef-core/json-columns-part2","01.csharp/10.ef-core/11.json-columns-part2",{"title":519,"path":520,"stem":521},"Успадкування — Абстрактні класи та TPH (Частина 1)","/csharp/ef-core/inheritance-part1","01.csharp/10.ef-core/12.inheritance-part1",{"title":523,"path":524,"stem":525},"Успадкування — TPT, TPC та Порівняння Стратегій (Частина 2)","/csharp/ef-core/inheritance-part2","01.csharp/10.ef-core/12.inheritance-part2",{"title":527,"path":528,"stem":529,"children":530},"Індекси, Обмеження та Схема (Частина 1)","/csharp/ef-core/indexes-constraints-part1","01.csharp/10.ef-core/13.indexes-constraints-part1",[531],{"title":527,"path":528,"stem":529},{"title":533,"path":534,"stem":535,"children":536},"Індекси, Обмеження та Схема (Частина 2)","/csharp/ef-core/indexes-constraints-part2","01.csharp/10.ef-core/13.indexes-constraints-part2",[537],{"title":533,"path":534,"stem":535},{"title":539,"path":540,"stem":541},"Seed Data — Початкові Дані (Частина 1)","/csharp/ef-core/seeding-part1","01.csharp/10.ef-core/14.seeding-part1",{"title":543,"path":544,"stem":545},"Seed Data — SQL-скрипти, Bogus та Стратегії (Частина 2)","/csharp/ef-core/seeding-part2","01.csharp/10.ef-core/14.seeding-part2",{"title":547,"path":548,"stem":549},"Global Query Filters — Глобальні Фільтри (Частина 1)","/csharp/ef-core/global-query-filters-part1","01.csharp/10.ef-core/15.global-query-filters-part1",{"title":551,"path":552,"stem":553},"Global Query Filters — Підводні камені та Інтеграція (Частина 2)","/csharp/ef-core/global-query-filters-part2","01.csharp/10.ef-core/15.global-query-filters-part2",{"title":555,"path":556,"stem":557},"LINQ-запити в EF Core (Частина 1)","/csharp/ef-core/linq-queries-part1","01.csharp/10.ef-core/16.linq-queries-part1",{"title":559,"path":560,"stem":561},"LINQ-запити в EF Core (Частина 2)","/csharp/ef-core/linq-queries-part2","01.csharp/10.ef-core/16.linq-queries-part2",{"title":563,"path":564,"stem":565},"Завантаження Пов'язаних Даних (Частина 1)","/csharp/ef-core/loading-related-data-part1","01.csharp/10.ef-core/17.loading-related-data-part1",{"title":567,"path":568,"stem":569},"Завантаження Пов'язаних Даних (Частина 2)","/csharp/ef-core/loading-related-data-part2","01.csharp/10.ef-core/17.loading-related-data-part2",{"title":571,"path":572,"stem":573},"Raw SQL, Views та Stored Procedures (Частина 1)","/csharp/ef-core/raw-sql-part1","01.csharp/10.ef-core/18.raw-sql-part1",{"title":575,"path":576,"stem":577},"Raw SQL — Stored Procedures, DbFunction та Bulk Operations (Частина 2)","/csharp/ef-core/raw-sql-part2","01.csharp/10.ef-core/18.raw-sql-part2",{"title":579,"path":580,"stem":581},"Продвинуті Запити — Compiled Queries, Bulk та Оптимізація (Частина 1)","/csharp/ef-core/advanced-queries-part1","01.csharp/10.ef-core/19.advanced-queries-part1",{"title":583,"path":584,"stem":585},"Продвинуті Запити — Query Tags, Bulk та Interceptors (Частина 2)","/csharp/ef-core/advanced-queries-part2","01.csharp/10.ef-core/19.advanced-queries-part2",{"title":587,"path":588,"stem":589},"Change Tracker — Відстеження Змін (Частина 1)","/csharp/ef-core/change-tracking-part1","01.csharp/10.ef-core/20.change-tracking-part1",{"title":591,"path":592,"stem":593},"Change Tracker — Графи Об'єктів та Disconnected (Частина 2)","/csharp/ef-core/change-tracking-part2","01.csharp/10.ef-core/20.change-tracking-part2",{"title":595,"path":596,"stem":597},"Збереження Даних та Транзакції (Частина 1)","/csharp/ef-core/saving-data-part1","01.csharp/10.ef-core/21.saving-data-part1",{"title":599,"path":600,"stem":601},"Збереження Даних — Concurrency та Outbox (Частина 2)","/csharp/ef-core/saving-data-part2","01.csharp/10.ef-core/21.saving-data-part2",{"title":603,"path":604,"stem":605},"Конкурентність та Блокування (Частина 1)","/csharp/ef-core/concurrency-part1","01.csharp/10.ef-core/22.concurrency-part1",{"title":607,"path":608,"stem":609},"Конкурентність — Дедлоки та Queue Processing (Частина 2)","/csharp/ef-core/concurrency-part2","01.csharp/10.ef-core/22.concurrency-part2",{"title":611,"path":612,"stem":613},"Міграції в EF Core — Основи (Частина 1)","/csharp/ef-core/migrations-basics-part1","01.csharp/10.ef-core/23.migrations-basics-part1",{"title":615,"path":616,"stem":617},"Міграції в EF Core — Основи (Частина 2)","/csharp/ef-core/migrations-basics-part2","01.csharp/10.ef-core/23.migrations-basics-part2",{"title":619,"path":620,"stem":621},"Міграції — Просунуті Сценарії (Частина 1)","/csharp/ef-core/migrations-advanced-part1","01.csharp/10.ef-core/24.migrations-advanced-part1",{"title":623,"path":624,"stem":625},"Міграції — Просунуті Сценарії (Частина 2)","/csharp/ef-core/migrations-advanced-part2","01.csharp/10.ef-core/24.migrations-advanced-part2",{"title":627,"path":628,"stem":629},"Управління Схемою та Database-First (Частина 1)","/csharp/ef-core/schema-management-part1","01.csharp/10.ef-core/25.schema-management-part1",{"title":631,"path":632,"stem":633},"Управління Схемою та Database-First (Частина 2)","/csharp/ef-core/schema-management-part2","01.csharp/10.ef-core/25.schema-management-part2",{"title":635,"path":636,"stem":637},"Продуктивність EF Core — Основи (Частина 1)","/csharp/ef-core/performance-fundamentals-part1","01.csharp/10.ef-core/26.performance-fundamentals-part1",{"title":639,"path":640,"stem":641},"Interceptors в EF Core (Частина 1)","/csharp/ef-core/interceptors-part1","01.csharp/10.ef-core/29.interceptors-part1",{"title":643,"path":644,"stem":645},"Interceptors в EF Core — Connection, Transaction та Materialization (Частина 2)","/csharp/ef-core/interceptors-part2","01.csharp/10.ef-core/29.interceptors-part2",{"title":647,"path":648,"stem":649},"План вивчення Entity Framework Core — Повний курс","/csharp/ef-core/implementation_plan","01.csharp/10.ef-core/implementation_plan",{"title":651,"icon":652,"path":653,"stem":654,"children":655,"page":59},"ASP.NET","i-devicon-dotnetcore","/csharp/aspnet","01.csharp/11.aspnet",[656,730,791,869,927,941,967,1057,1111,1182,1212,1289],{"title":657,"icon":658,"path":659,"stem":660,"children":661,"page":59},"Minimal API","i-lucide-network","/csharp/aspnet/minimal-api","01.csharp/11.aspnet/01.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","/csharp/aspnet/minimal-api/introduction","01.csharp/11.aspnet/01.minimal-api/01.introduction",{"title":667,"path":668,"stem":669},"Перший додаток на ASP.NET Core","/csharp/aspnet/minimal-api/first-application","01.csharp/11.aspnet/01.minimal-api/02.first-application",{"title":671,"path":672,"stem":673},"WebApplication, Builder та Dependency Injection","/csharp/aspnet/minimal-api/webapplication-builder","01.csharp/11.aspnet/01.minimal-api/03.webapplication-builder",{"title":675,"path":676,"stem":677},"Конвеєр запитів та Middleware","/csharp/aspnet/minimal-api/request-pipeline-middleware","01.csharp/11.aspnet/01.minimal-api/04.request-pipeline-middleware",{"title":679,"path":680,"stem":681},"Маршрутизація в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/routing-basics","01.csharp/11.aspnet/01.minimal-api/05.routing-basics",{"title":683,"path":684,"stem":685},"Маршрутизація в ASP.NET Core: Розширені можливості","/csharp/aspnet/minimal-api/routing-advanced","01.csharp/11.aspnet/01.minimal-api/06.routing-advanced",{"title":687,"path":688,"stem":689},"Статичні файли в ASP.NET Core","/csharp/aspnet/minimal-api/static-files","01.csharp/11.aspnet/01.minimal-api/07.static-files",{"title":691,"path":692,"stem":693},"Статичні Активи: MapStaticAssets (ASP.NET Core 9.0)","/csharp/aspnet/minimal-api/static-assets","01.csharp/11.aspnet/01.minimal-api/08.static-assets",{"title":695,"path":696,"stem":697},"Конфігурація в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/configuration-fundamentals","01.csharp/11.aspnet/01.minimal-api/09.configuration-fundamentals",{"title":699,"path":700,"stem":701},"Конфігурація: Паттерн Options","/csharp/aspnet/minimal-api/configuration-options","01.csharp/11.aspnet/01.minimal-api/10.configuration-options",{"title":703,"path":704,"stem":705},"Логування в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/logging-basics","01.csharp/11.aspnet/01.minimal-api/11.logging-basics",{"title":707,"path":708,"stem":709},"Логування: Serilog та Middleware","/csharp/aspnet/minimal-api/logging-advanced","01.csharp/11.aspnet/01.minimal-api/12.logging-advanced",{"title":711,"path":712,"stem":713},"Управління станом: HttpContext.Items та Cookies","/csharp/aspnet/minimal-api/state-management","01.csharp/11.aspnet/01.minimal-api/13.state-management",{"title":715,"path":716,"stem":717},"Стан сесії: Sessions","/csharp/aspnet/minimal-api/session-state","01.csharp/11.aspnet/01.minimal-api/14.session-state",{"title":719,"path":720,"stem":721},"Структура проєкту: від хаосу до архітектури","/csharp/aspnet/minimal-api/project-structure","01.csharp/11.aspnet/01.minimal-api/15.project-structure",{"title":723,"path":724,"stem":725},"Scalar у Minimal API: повний проєкт і Fluent OpenAPI","/csharp/aspnet/minimal-api/scalar-openapi-fluent","01.csharp/11.aspnet/01.minimal-api/16.scalar-openapi-fluent",{"title":727,"path":728,"stem":729},"Swagger / Swashbuckle у Minimal API: окремий класичний шлях","/csharp/aspnet/minimal-api/swagger-swashbuckle","01.csharp/11.aspnet/01.minimal-api/17.swagger-swashbuckle",{"title":731,"icon":658,"path":732,"stem":733,"children":734,"page":59},"API","/csharp/aspnet/api","01.csharp/11.aspnet/02.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","/csharp/aspnet/api/what-is-api","01.csharp/11.aspnet/02.api/01.what-is-api",{"title":740,"path":741,"stem":742},"Формати даних: JSON, XML, TOML та бінарні формати","/csharp/aspnet/api/data-formats","01.csharp/11.aspnet/02.api/02.data-formats",{"title":744,"path":745,"stem":746},"Парадигми API та концепція REST","/csharp/aspnet/api/api-paradigms-rest","01.csharp/11.aspnet/02.api/03.api-paradigms-rest",{"title":748,"path":749,"stem":750},"HTTP-методи, статус-коди та заголовки","/csharp/aspnet/api/http-methods-status-codes","01.csharp/11.aspnet/02.api/04.http-methods-status-codes",{"title":752,"path":753,"stem":754},"Організація HTTP API за принципами REST","/csharp/aspnet/api/rest-organizing","01.csharp/11.aspnet/02.api/05.rest-organizing",{"title":756,"path":757,"stem":758},"Номенклатура URL та CRUD-операції","/csharp/aspnet/api/url-nomenclature-crud","01.csharp/11.aspnet/02.api/06.url-nomenclature-crud",{"title":760,"path":761,"stem":762},"Правила дизайну: іменування та стандарти","/csharp/aspnet/api/api-design-naming","01.csharp/11.aspnet/02.api/07.api-design-naming",{"title":764,"path":765,"stem":766},"Валідація, ліміти та обробка помилок","/csharp/aspnet/api/api-design-validation","01.csharp/11.aspnet/02.api/08.api-design-validation",{"title":768,"path":769,"stem":770},"Обробка помилок у Minimal API","/csharp/aspnet/api/error-handling-http","01.csharp/11.aspnet/02.api/09.error-handling-http",{"title":772,"path":773,"stem":774},"Ідемпотентність та синхронізація стану","/csharp/aspnet/api/idempotency-sync","01.csharp/11.aspnet/02.api/10.idempotency-sync",{"title":776,"path":777,"stem":778},"Пагінація та організація списків","/csharp/aspnet/api/pagination-lists","01.csharp/11.aspnet/02.api/11.pagination-lists",{"title":780,"path":781,"stem":782},"Безпека API, кешування та інтернаціоналізація","/csharp/aspnet/api/security-auth","01.csharp/11.aspnet/02.api/12.security-auth",{"title":784,"path":785,"stem":786},"Процес проєктування API та документування","/csharp/aspnet/api/api-design-process","01.csharp/11.aspnet/02.api/13.api-design-process",{"title":788,"path":789,"stem":790},"OpenAPI: контракт, специфікація та документація API","/csharp/aspnet/api/openapi","01.csharp/11.aspnet/02.api/14.openapi",{"title":792,"icon":793,"path":794,"stem":795,"children":796,"page":59},"Auth","i-lucide-shield-check","/csharp/aspnet/auth","01.csharp/11.aspnet/03.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","/csharp/aspnet/auth/auth-fundamentals","01.csharp/11.aspnet/03.auth/01.auth-fundamentals",{"title":802,"path":803,"stem":804},"JWT-аутентифікація","/csharp/aspnet/auth/jwt-authentication","01.csharp/11.aspnet/03.auth/02.jwt-authentication",{"title":806,"path":807,"stem":808},"Авторизація: ролі, політики та resource-based доступ","/csharp/aspnet/auth/authorization-policies","01.csharp/11.aspnet/03.auth/03.authorization-policies",{"title":810,"path":811,"stem":812},"Cookie-аутентифікація та ASP.NET Core Identity","/csharp/aspnet/auth/cookie-auth-identity","01.csharp/11.aspnet/03.auth/04.cookie-auth-identity",{"title":814,"path":815,"stem":816},"JWT + Refresh Tokens (HttpOnly Cookie)","/csharp/aspnet/auth/04b.identity-auth-jwt","01.csharp/11.aspnet/03.auth/04b.identity-auth-jwt",{"title":818,"path":819,"stem":820},"Identity: Підтвердження Email та Скидання Пароля","/csharp/aspnet/auth/identity-email-confirmation","01.csharp/11.aspnet/03.auth/05.identity-email-confirmation",{"title":822,"path":823,"stem":824},"Identity: Двофакторна Аутентифікація (2FA)","/csharp/aspnet/auth/identity-two-factor","01.csharp/11.aspnet/03.auth/06.identity-two-factor",{"title":826,"path":827,"stem":828},"Identity: Внутрішня Архітектура та Кастомізація","/csharp/aspnet/auth/identity-internals","01.csharp/11.aspnet/03.auth/07.identity-internals",{"title":830,"path":831,"stem":832},"OAuth 2.0 та зовнішні провайдери","/csharp/aspnet/auth/oauth-external-providers","01.csharp/11.aspnet/03.auth/08.oauth-external-providers",{"title":834,"path":835,"stem":836},"Безпека на практиці: CORS, HTTPS та захист від атак","/csharp/aspnet/auth/security-hardening","01.csharp/11.aspnet/03.auth/09.security-hardening",{"title":838,"path":839,"stem":840},"Теорія OAuth 2.0: Поняття, Аналогії та Флоу","/csharp/aspnet/auth/oauth-theory","01.csharp/11.aspnet/03.auth/10.oauth-theory",{"title":842,"path":843,"stem":844},"OIDC, OAuth 2.0 та Keycloak в ASP.NET Core","/csharp/aspnet/auth/oidc-keycloak","01.csharp/11.aspnet/03.auth/10.oidc-keycloak",{"title":846,"path":847,"stem":848},"API Keys аутентифікація в ASP.NET Core","/csharp/aspnet/auth/api-keys","01.csharp/11.aspnet/03.auth/11.api-keys",{"title":850,"path":851,"stem":852},"Rate Limiting та Throttling в ASP.NET Core","/csharp/aspnet/auth/rate-limiting","01.csharp/11.aspnet/03.auth/12.rate-limiting",{"title":854,"path":855,"stem":856},"Refresh Token Rotation в ASP.NET Core","/csharp/aspnet/auth/refresh-token-rotation","01.csharp/11.aspnet/03.auth/13.refresh-token-rotation",{"title":858,"path":859,"stem":860},"Certificate Authentication та mTLS в ASP.NET Core","/csharp/aspnet/auth/certificate-auth","01.csharp/11.aspnet/03.auth/14.certificate-auth",{"title":862,"path":863,"stem":864},"RBAC, ABAC та ReBAC в ASP.NET Core","/csharp/aspnet/auth/rbac-abac-rebac","01.csharp/11.aspnet/03.auth/15.rbac-abac-rebac",{"title":866,"path":867,"stem":868},"Multi-tenancy та ізоляція даних в ASP.NET Core","/csharp/aspnet/auth/multi-tenancy","01.csharp/11.aspnet/03.auth/16.multi-tenancy",{"title":870,"icon":871,"path":872,"stem":873,"children":874,"page":59},"Нотифікації","i-lucide-bell","/csharp/aspnet/notifications","01.csharp/11.aspnet/04.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","/csharp/aspnet/notifications/in-app-database-notifications","01.csharp/11.aspnet/04.notifications/01.in-app-database-notifications",{"title":880,"path":881,"stem":882},"Polling: Регулярний запит оновлень","/csharp/aspnet/notifications/polling","01.csharp/11.aspnet/04.notifications/02.polling",{"title":884,"path":885,"stem":886},"Server-Sent Events: Однострімовий push від сервера","/csharp/aspnet/notifications/server-sent-events","01.csharp/11.aspnet/04.notifications/03.server-sent-events",{"title":888,"path":889,"stem":890},"WebSockets: Двостороннє з'єднання в реальному часі","/csharp/aspnet/notifications/websockets","01.csharp/11.aspnet/04.notifications/04.websockets",{"title":892,"path":893,"stem":894},"SignalR: Абстракція над транспортами реального часу","/csharp/aspnet/notifications/signalr","01.csharp/11.aspnet/04.notifications/05.signalr",{"title":896,"path":897,"stem":898},"Background Services: Фонові задачі в ASP.NET Core","/csharp/aspnet/notifications/background-services","01.csharp/11.aspnet/04.notifications/06.background-services",{"title":900,"path":901,"stem":902},"Web Push нотифікації","/csharp/aspnet/notifications/web-push","01.csharp/11.aspnet/04.notifications/07.web-push",{"title":904,"path":905,"stem":906},"Email нотифікації","/csharp/aspnet/notifications/email-notifications","01.csharp/11.aspnet/04.notifications/08.email-notifications",{"title":908,"path":909,"stem":910},"Порівняння підходів: Як вибрати правильну технологію нотифікацій","/csharp/aspnet/notifications/choosing-the-right-approach","01.csharp/11.aspnet/04.notifications/09.choosing-the-right-approach",{"title":912,"path":913,"stem":914},"Hangfire: Надійне планування фонових задач","/csharp/aspnet/notifications/hangfire","01.csharp/11.aspnet/04.notifications/10.hangfire",{"title":916,"path":917,"stem":918},"Практика: Конвертація зображень у WebP через Hangfire","/csharp/aspnet/notifications/hangfire-image-webp","01.csharp/11.aspnet/04.notifications/11.hangfire-image-webp",{"title":920,"path":921,"stem":922},"Практика: Підготовка відео до HLS-стрімінгу через Hangfire","/csharp/aspnet/notifications/hangfire-video-hls","01.csharp/11.aspnet/04.notifications/12.hangfire-video-hls",{"title":924,"path":925,"stem":926},"Telegram-нотифікації: від одного повідомлення до масових розсилок і мульти-канального підходу","/csharp/aspnet/notifications/telegram-notifications","01.csharp/11.aspnet/04.notifications/13.telegram-notifications",{"title":928,"icon":929,"path":930,"stem":931,"children":932,"page":59},"Інтернаціоналізація","i-lucide-languages","/csharp/aspnet/i18n","01.csharp/11.aspnet/05.i18n",[933,937],{"title":934,"path":935,"stem":936},"Інтернаціоналізація (i18n) у Minimal API: від A до Я","/csharp/aspnet/i18n/internationalization","01.csharp/11.aspnet/05.i18n/01.internationalization",{"title":938,"path":939,"stem":940},"Humanizer: людиномовні рядки у .NET","/csharp/aspnet/i18n/humanizer","01.csharp/11.aspnet/05.i18n/02.humanizer",{"title":942,"icon":943,"path":944,"stem":945,"children":946,"page":59},"Кешування","i-lucide-layers","/csharp/aspnet/caching","01.csharp/11.aspnet/06.caching",[947,951,955,959,963],{"title":948,"path":949,"stem":950},"Огляд кешування: чотири рівні і коли що обирати","/csharp/aspnet/caching/caching","01.csharp/11.aspnet/06.caching/01.caching",{"title":952,"path":953,"stem":954},"IMemoryCache: кеш в оперативній пам'яті","/csharp/aspnet/caching/memory-cache","01.csharp/11.aspnet/06.caching/02.memory-cache",{"title":956,"path":957,"stem":958},"IDistributedCache і Redis: розподілений кеш","/csharp/aspnet/caching/distributed-cache","01.csharp/11.aspnet/06.caching/03.distributed-cache",{"title":960,"path":961,"stem":962},"Response Cache: HTTP-кешування через Cache-Control","/csharp/aspnet/caching/response-cache","01.csharp/11.aspnet/06.caching/04.response-cache",{"title":964,"path":965,"stem":966},"Output Cache: серверний кеш HTTP-відповідей (.NET 7+)","/csharp/aspnet/caching/output-cache","01.csharp/11.aspnet/06.caching/05.output-cache",{"title":968,"icon":969,"path":970,"stem":971,"children":972,"page":59},"Тестування","i-lucide-test-tube","/csharp/aspnet/testing","01.csharp/11.aspnet/07.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","/csharp/aspnet/testing/what-is-testing","01.csharp/11.aspnet/07.testing/01.what-is-testing",{"title":978,"path":979,"stem":980},"Піраміда тестування — Стратегія, а не Догма","/csharp/aspnet/testing/testing-pyramid","01.csharp/11.aspnet/07.testing/02.testing-pyramid",{"title":982,"path":983,"stem":984},"Дві Школи Тестування — Лондон проти Детройту","/csharp/aspnet/testing/testing-schools","01.csharp/11.aspnet/07.testing/03.testing-schools",{"title":986,"path":987,"stem":988},"TDD та BDD — Тести як Дизайн-інструмент","/csharp/aspnet/testing/tdd-and-bdd","01.csharp/11.aspnet/07.testing/04.tdd-and-bdd",{"title":990,"path":991,"stem":992},"Що саме тестувати — Техніки аналізу та Циклomatична складність","/csharp/aspnet/testing/what-to-test","01.csharp/11.aspnet/07.testing/05.what-to-test",{"title":994,"path":995,"stem":996},"Тестові Фреймворки — Навіщо вони і що всередині","/csharp/aspnet/testing/test-frameworks","01.csharp/11.aspnet/07.testing/06.test-frameworks",{"title":998,"path":999,"stem":1000},"xUnit — Факти, Теорії та Lifecycle тестів","/csharp/aspnet/testing/xunit-basics","01.csharp/11.aspnet/07.testing/07.xunit-basics",{"title":1002,"path":1003,"stem":1004},"xUnit Advanced — Fixtures, Кастомізація та Розширення","/csharp/aspnet/testing/xunit-advanced","01.csharp/11.aspnet/07.testing/08.xunit-advanced",{"title":1006,"path":1007,"stem":1008},"Moq — Глибоке занурення в мокування","/csharp/aspnet/testing/mocking-with-moq","01.csharp/11.aspnet/07.testing/09.mocking-with-moq",{"title":1010,"path":1011,"stem":1012},"Тестування Баз Даних — EF Core, SQLite та Testcontainers","/csharp/aspnet/testing/database-testing","01.csharp/11.aspnet/07.testing/10.database-testing",{"title":1014,"path":1015,"stem":1016},"Integration Testing — Частина 1 [Теорія та WebApplicationFactory]","/csharp/aspnet/testing/integration-testing","01.csharp/11.aspnet/07.testing/11.integration-testing",{"title":1018,"path":1019,"stem":1020},"Інтеграційне тестування — Практика","/csharp/aspnet/testing/11a.integration-testing-practice","01.csharp/11.aspnet/07.testing/11a.integration-testing-practice",{"title":1022,"path":1023,"stem":1024},"Integration Testing — Частина 2 [Просунуті Сценарії та Testcontainers]","/csharp/aspnet/testing/integration-testing-advanced","01.csharp/11.aspnet/07.testing/12.integration-testing-advanced",{"title":1026,"path":1027,"stem":1028},"Професійний Postman: Колекції, Змінні та GitHub Інтеграція","/csharp/aspnet/testing/postman-professional","01.csharp/11.aspnet/07.testing/13.postman-professional",{"title":1030,"path":1031,"stem":1032},"HttpClient у Тестах Частина 1: Архітектура та MockHttpMessageHandler","/csharp/aspnet/testing/httpclient-testing","01.csharp/11.aspnet/07.testing/14.httpclient-testing",{"title":1034,"path":1035,"stem":1036},"HttpClient у Тестах Частина 2: WireMock.Net та Resilience","/csharp/aspnet/testing/wiremock-net","01.csharp/11.aspnet/07.testing/15.wiremock-net",{"title":1038,"path":1039,"stem":1040},"Патерни та Анти-патерни Тестування: Test Smells","/csharp/aspnet/testing/testing-patterns","01.csharp/11.aspnet/07.testing/16.testing-patterns",{"title":1042,"path":1043,"stem":1044},"Просунуті інструменти: Time, Snapshots та Властивості","/csharp/aspnet/testing/advanced-testing-tools","01.csharp/11.aspnet/07.testing/17.advanced-testing-tools",{"title":1046,"path":1047,"stem":1048},"Тестування Архітектури з NetArchTest","/csharp/aspnet/testing/architecture-testing","01.csharp/11.aspnet/07.testing/18.architecture-testing",{"title":1050,"path":1051,"stem":1052},"Тестування Продуктивності: BenchmarkDotNet, NBomber та k6","/csharp/aspnet/testing/performance-testing","01.csharp/11.aspnet/07.testing/19.performance-testing",{"title":1054,"path":1055,"stem":1056},"Залишок плану для курсу \"Тестування ASP.NET Minimal API\"","/csharp/aspnet/testing/remaining_plan","01.csharp/11.aspnet/07.testing/remaining_plan",{"title":1058,"icon":1059,"path":1060,"stem":1061,"children":1062,"page":59},"Платежі","i-lucide-credit-card","/csharp/aspnet/payments","01.csharp/11.aspnet/08.payments",[1063,1067,1071,1075,1079,1083,1087,1091,1095,1099,1103,1107],{"title":1064,"path":1065,"stem":1066},"Основи платіжної інфраструктури","/csharp/aspnet/payments/payment-fundamentals","01.csharp/11.aspnet/08.payments/01.payment-fundamentals",{"title":1068,"path":1069,"stem":1070},"Методи оплати в Україні","/csharp/aspnet/payments/payment-methods-ukraine","01.csharp/11.aspnet/08.payments/02.payment-methods-ukraine",{"title":1072,"path":1073,"stem":1074},"PCI DSS та безпека платежів","/csharp/aspnet/payments/pci-dss-security","01.csharp/11.aspnet/08.payments/03.pci-dss-security",{"title":1076,"path":1077,"stem":1078},"Архітектура платіжної підсистеми","/csharp/aspnet/payments/payment-architecture","01.csharp/11.aspnet/08.payments/04.payment-architecture",{"title":1080,"path":1081,"stem":1082},"Інтеграція LiqPay (ПриватБанк)","/csharp/aspnet/payments/liqpay-integration","01.csharp/11.aspnet/08.payments/05.liqpay-integration",{"title":1084,"path":1085,"stem":1086},"Інтеграція Monobank Acquiring API","/csharp/aspnet/payments/monobank-acquiring","01.csharp/11.aspnet/08.payments/06.monobank-acquiring",{"title":1088,"path":1089,"stem":1090},"Інтеграція Stripe","/csharp/aspnet/payments/stripe-integration","01.csharp/11.aspnet/08.payments/07.stripe-integration",{"title":1092,"path":1093,"stem":1094},"Webhooks — глибоке занурення","/csharp/aspnet/payments/webhooks-deep-dive","01.csharp/11.aspnet/08.payments/08.webhooks-deep-dive",{"title":1096,"path":1097,"stem":1098},"Підписки та рекурентні платежі","/csharp/aspnet/payments/subscriptions-recurring","01.csharp/11.aspnet/08.payments/09.subscriptions-recurring",{"title":1100,"path":1101,"stem":1102},"Повернення коштів та диспути","/csharp/aspnet/payments/refunds-disputes","01.csharp/11.aspnet/08.payments/10.refunds-disputes",{"title":1104,"path":1105,"stem":1106},"Тестування платіжних інтеграцій","/csharp/aspnet/payments/testing-payments","01.csharp/11.aspnet/08.payments/11.testing-payments",{"title":1108,"path":1109,"stem":1110},"Чекліст виходу в Production","/csharp/aspnet/payments/production-checklist","01.csharp/11.aspnet/08.payments/12.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","/csharp/aspnet/libraries","01.csharp/11.aspnet/09.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","/csharp/aspnet/libraries/fluent-validation","01.csharp/11.aspnet/09.libraries/01.fluent-validation",{"title":1135,"path":1136,"stem":1137},"Маппінг об","/csharp/aspnet/libraries/mapster","01.csharp/11.aspnet/09.libraries/02.mapster",{"title":1139,"path":1140,"stem":1141},"Обробка помилок з ErrorOr та Result Pattern в ASP.NET Core","/csharp/aspnet/libraries/erroror-result-pattern","01.csharp/11.aspnet/09.libraries/03.erroror-result-pattern",{"title":1143,"path":1144,"stem":1145},"Структуроване логування з Serilog в ASP.NET Core","/csharp/aspnet/libraries/serilog","01.csharp/11.aspnet/09.libraries/04.serilog",{"title":1147,"path":1148,"stem":1149},"CQRS та Mediator з MediatR в ASP.NET Core","/csharp/aspnet/libraries/mediatr","01.csharp/11.aspnet/09.libraries/05.mediatr",{"title":1151,"path":1152,"stem":1153},"Відмовостійкість з Polly в ASP.NET Core","/csharp/aspnet/libraries/polly","01.csharp/11.aspnet/09.libraries/06.polly",{"title":1155,"path":1156,"stem":1157},"Health Checks в ASP.NET Core","/csharp/aspnet/libraries/health-checks","01.csharp/11.aspnet/09.libraries/07.health-checks",{"title":1159,"path":1160,"stem":1161},"Feature Management та Feature Flags в ASP.NET Core","/csharp/aspnet/libraries/feature-management","01.csharp/11.aspnet/09.libraries/08.feature-management",{"title":1163,"path":1164,"stem":1165},"Відправка Email з FluentEmail в ASP.NET Core","/csharp/aspnet/libraries/fluent-email","01.csharp/11.aspnet/09.libraries/09.fluent-email",{"title":1167,"path":1168,"stem":1169},"Генерація PDF з QuestPDF в ASP.NET Core","/csharp/aspnet/libraries/quest-pdf","01.csharp/11.aspnet/09.libraries/10.quest-pdf",{"title":1171,"path":1172,"stem":1173},"Генерація тестових даних з Bogus в ASP.NET Core","/csharp/aspnet/libraries/bogus","01.csharp/11.aspnet/09.libraries/11.bogus",{"title":1175,"path":1176,"stem":1177},"Humanizer та Guard Clauses в ASP.NET Core","/csharp/aspnet/libraries/humanizer-guard","01.csharp/11.aspnet/09.libraries/12.humanizer-guard",{"title":1179,"path":1180,"stem":1181},"План модуля 10.libraries — Популярні бібліотеки ASP.NET","/csharp/aspnet/libraries/plan","01.csharp/11.aspnet/09.libraries/plan",{"title":1183,"icon":1184,"path":1185,"stem":1186,"children":1187,"page":59},"Razor Pages","i-lucide-layout-template","/csharp/aspnet/razor-pages","01.csharp/11.aspnet/10.razor-pages",[1188,1192,1196,1200,1204,1208],{"title":1189,"path":1190,"stem":1191},"Від Minimal API до Razor Pages: концептуальний перехід","/csharp/aspnet/razor-pages/from-minimal-api","01.csharp/11.aspnet/10.razor-pages/01.from-minimal-api",{"title":1193,"path":1194,"stem":1195},"PageModel: логіка сторінки Razor Pages","/csharp/aspnet/razor-pages/page-model","01.csharp/11.aspnet/10.razor-pages/02.page-model",{"title":1197,"path":1198,"stem":1199},"Razor синтаксис: шаблонізатор у .cshtml","/csharp/aspnet/razor-pages/razor-syntax","01.csharp/11.aspnet/10.razor-pages/03.razor-syntax",{"title":1201,"path":1202,"stem":1203},"Tag Helpers: типізований HTML","/csharp/aspnet/razor-pages/tag-helpers","01.csharp/11.aspnet/10.razor-pages/04.tag-helpers",{"title":1205,"path":1206,"stem":1207},"Форми і валідація: повний цикл обробки даних","/csharp/aspnet/razor-pages/forms-validation","01.csharp/11.aspnet/10.razor-pages/05.forms-validation",{"title":1209,"path":1210,"stem":1211},"Практичний проєкт: TaskManager на Razor Pages","/csharp/aspnet/razor-pages/project-task-manager","01.csharp/11.aspnet/10.razor-pages/06.project-task-manager",{"title":1213,"path":1214,"stem":1215,"children":1216,"page":59},"ASP.NET Core MVC","/csharp/aspnet/mvc","01.csharp/11.aspnet/11.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","/csharp/aspnet/mvc/mvc-pattern","01.csharp/11.aspnet/11.mvc/01.mvc-pattern",{"title":1222,"path":1223,"stem":1224},"Від Razor Pages до MVC: концептуальний перехід","/csharp/aspnet/mvc/from-razor-pages","01.csharp/11.aspnet/11.mvc/02.from-razor-pages",{"title":1226,"path":1227,"stem":1228},"Controllers та Actions: серце MVC","/csharp/aspnet/mvc/controllers-actions","01.csharp/11.aspnet/11.mvc/03.controllers-actions",{"title":1230,"path":1231,"stem":1232},"Маршрутизація в MVC: Convention vs Attribute Routing","/csharp/aspnet/mvc/routing-mvc","01.csharp/11.aspnet/11.mvc/04.routing-mvc",{"title":1234,"path":1235,"stem":1236},"Model Binding: від HTTP до C#","/csharp/aspnet/mvc/model-binding","01.csharp/11.aspnet/11.mvc/05.model-binding",{"title":1238,"path":1239,"stem":1240},"Views, ViewData, ViewBag, TempData і ViewModel","/csharp/aspnet/mvc/views-viewdata-tempdata","01.csharp/11.aspnet/11.mvc/06.views-viewdata-tempdata",{"title":1242,"path":1243,"stem":1244},"Filters: аспектно-орієнтоване програмування в MVC","/csharp/aspnet/mvc/filters","01.csharp/11.aspnet/11.mvc/07.filters",{"title":1246,"path":1247,"stem":1248},"Areas: структурування великих застосунків","/csharp/aspnet/mvc/areas","01.csharp/11.aspnet/11.mvc/08.areas",{"title":1250,"path":1251,"stem":1252},"View Components: повторювані незалежні блоки UI","/csharp/aspnet/mvc/view-components","01.csharp/11.aspnet/11.mvc/09.view-components",{"title":1254,"path":1255,"stem":1256},"Display та Editor Templates","/csharp/aspnet/mvc/display-editor-templates","01.csharp/11.aspnet/11.mvc/10.display-editor-templates",{"title":1258,"path":1259,"stem":1260},"Валідація: IValidatableObject та FluentValidation","/csharp/aspnet/mvc/validation-advanced","01.csharp/11.aspnet/11.mvc/11.validation-advanced",{"title":1262,"path":1263,"stem":1264},"HTMX: інтерактивність через HTML-атрибути","/csharp/aspnet/mvc/htmx","01.csharp/11.aspnet/11.mvc/12.htmx",{"title":1266,"path":1267,"stem":1268},"HTMX у ASP.NET Core MVC: серверна інтеграція","/csharp/aspnet/mvc/ajax-htmx-mvc","01.csharp/11.aspnet/11.mvc/13.ajax-htmx-mvc",{"title":1270,"path":1271,"stem":1272},"Практичний проєкт: Каталог товарів з HTMX","/csharp/aspnet/mvc/htmx-project","01.csharp/11.aspnet/11.mvc/14.htmx-project",{"title":1274,"path":1275,"stem":1276},"Завантаження та обробка файлів","/csharp/aspnet/mvc/file-upload","01.csharp/11.aspnet/11.mvc/15.file-upload",{"title":1278,"path":1279,"stem":1280},"Глобалізація та Локалізація MVC","/csharp/aspnet/mvc/globalization-localization","01.csharp/11.aspnet/11.mvc/16.globalization-localization",{"title":1282,"path":1283,"stem":1284},"Підсумковий проєкт: Блог-платформа","/csharp/aspnet/mvc/mvc-project","01.csharp/11.aspnet/11.mvc/17.mvc-project",{"title":1286,"path":1287,"stem":1288},"План курсу: ASP.NET Core MVC","/csharp/aspnet/mvc/plan","01.csharp/11.aspnet/11.mvc/plan",{"title":1290,"path":1291,"stem":1292,"children":1293,"page":59},"Web Api","/csharp/aspnet/web-api","01.csharp/11.aspnet/12.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","/csharp/aspnet/web-api/from-minimal-api-to-controllers","01.csharp/11.aspnet/12.web-api/01.from-minimal-api-to-controllers",{"title":1299,"path":1300,"stem":1301},"ControllerBase, ActionResult\u003CT> та Response Types","/csharp/aspnet/web-api/controller-base-actionresult","01.csharp/11.aspnet/12.web-api/02.controller-base-actionresult",{"title":1303,"path":1304,"stem":1305},"Content Negotiation - JSON, XML та власні форматери","/csharp/aspnet/web-api/content-negotiation","01.csharp/11.aspnet/12.web-api/03.content-negotiation",{"title":1307,"path":1308,"stem":1309},"Версіонування API","/csharp/aspnet/web-api/api-versioning","01.csharp/11.aspnet/12.web-api/04.api-versioning",{"title":1311,"path":1312,"stem":1313},"ProblemDetails та структурована обробка помилок","/csharp/aspnet/web-api/problemdetails-error-handling","01.csharp/11.aspnet/12.web-api/05.problemdetails-error-handling",{"title":1315,"path":1316,"stem":1317},"Фільтри у Web API контексті","/csharp/aspnet/web-api/filters-for-api","01.csharp/11.aspnet/12.web-api/06.filters-for-api",{"title":1319,"path":1320,"stem":1321},"Пагінація, фільтрація та сортування","/csharp/aspnet/web-api/pagination-filtering-sorting","01.csharp/11.aspnet/12.web-api/07.pagination-filtering-sorting",{"title":1323,"path":1324,"stem":1325},"HATEOAS та Resource Expansion","/csharp/aspnet/web-api/hateoas-resource-expansion","01.csharp/11.aspnet/12.web-api/08.hateoas-resource-expansion",{"title":1327,"path":1328,"stem":1329},"Гібридна архітектура - Minimal API + Controllers","/csharp/aspnet/web-api/minimal-api-vs-controllers-hybrid","01.csharp/11.aspnet/12.web-api/09.minimal-api-vs-controllers-hybrid",{"title":1331,"path":1332,"stem":1333},"Документація API - Swashbuckle, NSwag та генерація клієнтів","/csharp/aspnet/web-api/api-documentation-generation","01.csharp/11.aspnet/12.web-api/10.api-documentation-generation",{"title":1335,"path":1336,"stem":1337},"Health Checks та моніторинг API","/csharp/aspnet/web-api/health-checks-monitoring","01.csharp/11.aspnet/12.web-api/11.health-checks-monitoring",{"title":1339,"path":1340,"stem":1341},"Підсумковий проєкт - Production-Ready REST API","/csharp/aspnet/web-api/web-api-project","01.csharp/11.aspnet/12.web-api/12.web-api-project",{"title":1343,"path":1344,"stem":1345},"План курсу: ASP.NET Core Web API (Controllers)","/csharp/aspnet/web-api/plan","01.csharp/11.aspnet/12.web-api/plan",{"title":1347,"icon":1348,"path":1349,"stem":1350,"children":1351,"page":59},"Desktop UI","i-lucide-app-window","/csharp/desktop-ui","01.csharp/12.desktop-ui",[1352,1356,1360,1364,1368,1372,1376,1380,1384,1388,1392,1396,1400,1404,1408,1412,1416,1420,1424,1428,1432,1436,1440,1444,1448,1452,1456,1460,1464,1468,1472,1476,1480,1484,1488,1492,1496,1500,1504,1508,1512,1516,1520,1524,1528,1532,1536,1540,1544,1548,1552,1556,1560,1564,1568,1572,1576,1580,1584,1588,1592,1596,1600,1604,1608,1612,1616,1620,1624,1628,1632],{"title":1353,"path":1354,"stem":1355},"Що таке десктопна розробка?","/csharp/desktop-ui/what-is-desktop-dev","01.csharp/12.desktop-ui/01.what-is-desktop-dev",{"title":1357,"path":1358,"stem":1359},"Архітектура WPF — як влаштований графічний інтерфейс","/csharp/desktop-ui/wpf-architecture","01.csharp/12.desktop-ui/02.wpf-architecture",{"title":1361,"path":1362,"stem":1363},"Перший WPF-проєкт — від нуля до вікна","/csharp/desktop-ui/first-wpf-app","01.csharp/12.desktop-ui/03.first-wpf-app",{"title":1365,"path":1366,"stem":1367},"Перший Avalonia-проєкт: WPF для всіх платформ","/csharp/desktop-ui/03a.first-avalonia-app","01.csharp/12.desktop-ui/03a.first-avalonia-app",{"title":1369,"path":1370,"stem":1371},"XAML: декларативний інтерфейс","/csharp/desktop-ui/xaml-basics","01.csharp/12.desktop-ui/04.xaml-basics",{"title":1373,"path":1374,"stem":1375},"Fluent UI у WPF — сучасний дизайн Windows 11","/csharp/desktop-ui/04a.wpf-fluent-ui","01.csharp/12.desktop-ui/04a.wpf-fluent-ui",{"title":1377,"path":1378,"stem":1379},"WPF UI — сучасна бібліотека Fluent контролів","/csharp/desktop-ui/04b.wpf-ui-library","01.csharp/12.desktop-ui/04b.wpf-ui-library",{"title":1381,"path":1382,"stem":1383},"HandyControl — велика бібліотека UI контролів для WPF","/csharp/desktop-ui/04c.handycontrol-library","01.csharp/12.desktop-ui/04c.handycontrol-library",{"title":1385,"path":1386,"stem":1387},"Простори імен та ресурси XAML","/csharp/desktop-ui/xaml-namespaces-resources","01.csharp/12.desktop-ui/05.xaml-namespaces-resources",{"title":1389,"path":1390,"stem":1391},"XAML в Avalonia: ключові відмінності від WPF","/csharp/desktop-ui/05a.avalonia-xaml-differences","01.csharp/12.desktop-ui/05a.avalonia-xaml-differences",{"title":1393,"path":1394,"stem":1395},"Розширення розмітки XAML (Markup Extensions)","/csharp/desktop-ui/xaml-markup-extensions","01.csharp/12.desktop-ui/06.xaml-markup-extensions",{"title":1397,"path":1398,"stem":1399},"Панелі Layout: StackPanel, WrapPanel, DockPanel","/csharp/desktop-ui/layout-panels-part1","01.csharp/12.desktop-ui/07.layout-panels-part1",{"title":1401,"path":1402,"stem":1403},"Grid, Canvas, UniformGrid","/csharp/desktop-ui/layout-panels-part2","01.csharp/12.desktop-ui/07.layout-panels-part2",{"title":1405,"path":1406,"stem":1407},"Просунуті техніки Layout","/csharp/desktop-ui/layout-advanced","01.csharp/12.desktop-ui/08.layout-advanced",{"title":1409,"path":1410,"stem":1411},"Адаптивний Layout та найкращі практики","/csharp/desktop-ui/layout-responsive","01.csharp/12.desktop-ui/09.layout-responsive",{"title":1413,"path":1414,"stem":1415},"Layout в Avalonia: відмінності та нові можливості","/csharp/desktop-ui/09a.layout-avalonia","01.csharp/12.desktop-ui/09a.layout-avalonia",{"title":1417,"path":1418,"stem":1419},"Button, Image, ProgressBar та інші базові контроли","/csharp/desktop-ui/basic-controls","01.csharp/12.desktop-ui/10.basic-controls",{"title":1421,"path":1422,"stem":1423},"Контроли в Avalonia: відмінності від WPF","/csharp/desktop-ui/10a.controls-avalonia","01.csharp/12.desktop-ui/10a.controls-avalonia",{"title":1425,"path":1426,"stem":1427},"Текстові контроли — TextBlock, TextBox, RichTextBox","/csharp/desktop-ui/text-controls","01.csharp/12.desktop-ui/11.text-controls",{"title":1429,"path":1430,"stem":1431},"Контроли вибору — CheckBox, RadioButton, ComboBox, ListBox, DatePicker","/csharp/desktop-ui/selection-controls","01.csharp/12.desktop-ui/12.selection-controls",{"title":1433,"path":1434,"stem":1435},"Content Model — GroupBox, Expander, TabControl, StatusBar","/csharp/desktop-ui/content-controls","01.csharp/12.desktop-ui/13.content-controls",{"title":1437,"path":1438,"stem":1439},"UI/UX принципи десктопних застосунків","/csharp/desktop-ui/13a.ui-ux-principles","01.csharp/12.desktop-ui/13a.ui-ux-principles",{"title":1441,"path":1442,"stem":1443},"Dependency Properties — Концепція та Value Resolution","/csharp/desktop-ui/dependency-properties-part1","01.csharp/12.desktop-ui/14.dependency-properties-part1",{"title":1445,"path":1446,"stem":1447},"Avalonia Property System — StyledProperty та DirectProperty","/csharp/desktop-ui/14a.avalonia-property-system","01.csharp/12.desktop-ui/14a.avalonia-property-system",{"title":1449,"path":1450,"stem":1451},"Attached Properties — Властивості без меж","/csharp/desktop-ui/attached-properties","01.csharp/12.desktop-ui/15.attached-properties",{"title":1453,"path":1454,"stem":1455},"Routed Events — Маршрутизація подій у WPF","/csharp/desktop-ui/routed-events","01.csharp/12.desktop-ui/16.routed-events",{"title":1457,"path":1458,"stem":1459},"Data Binding — Від Code-Behind до Декларативності","/csharp/desktop-ui/data-binding-basics-part1","01.csharp/12.desktop-ui/17.data-binding-basics-part1",{"title":1461,"path":1462,"stem":1463},"INotifyPropertyChanged — Живе оновлення UI","/csharp/desktop-ui/data-binding-basics-part2","01.csharp/12.desktop-ui/17.data-binding-basics-part2",{"title":1465,"path":1466,"stem":1467},"Compiled Bindings в Avalonia — Безпека на етапі компіляції","/csharp/desktop-ui/17a.avalonia-compiled-bindings","01.csharp/12.desktop-ui/17a.avalonia-compiled-bindings",{"title":1469,"path":1470,"stem":1471},"Просунутий Data Binding — ElementName, RelativeSource, MultiBinding","/csharp/desktop-ui/data-binding-advanced","01.csharp/12.desktop-ui/18.data-binding-advanced",{"title":1473,"path":1474,"stem":1475},"Value Converters — Перетворення типів даних у Data Binding","/csharp/desktop-ui/value-converters","01.csharp/12.desktop-ui/19.value-converters",{"title":1477,"path":1478,"stem":1479},"Data Templates — Візуалізація об'єктів у WPF","/csharp/desktop-ui/data-templates","01.csharp/12.desktop-ui/20.data-templates",{"title":1481,"path":1482,"stem":1483},"Collections Binding Part 1 — ObservableCollection та ItemsControl","/csharp/desktop-ui/collections-binding-part1","01.csharp/12.desktop-ui/21.collections-binding-part1",{"title":1485,"path":1486,"stem":1487},"Collections Binding Part 2 — ICollectionView, Filtering, Sorting та Virtualization","/csharp/desktop-ui/collections-binding-part2","01.csharp/12.desktop-ui/21.collections-binding-part2",{"title":1489,"path":1490,"stem":1491},"MVVM Pattern — Від Spaghetti Code до архітектури","/csharp/desktop-ui/mvvm-pattern","01.csharp/12.desktop-ui/22.mvvm-pattern",{"title":1493,"path":1494,"stem":1495},"ViewModel Implementation — Від BaseViewModel до валідації","/csharp/desktop-ui/viewmodel-implementation","01.csharp/12.desktop-ui/23.viewmodel-implementation",{"title":1497,"path":1498,"stem":1499},"Commands — Від event handlers до декларативних команд","/csharp/desktop-ui/commands","01.csharp/12.desktop-ui/24.commands",{"title":1501,"path":1502,"stem":1503},"MVVM Toolkit — MVVM без boilerplate через Source Generators","/csharp/desktop-ui/mvvm-toolkit","01.csharp/12.desktop-ui/25.mvvm-toolkit",{"title":1505,"path":1506,"stem":1507},"Messenger Pattern — Комунікація між ViewModel без прямих посилань","/csharp/desktop-ui/messenger-pattern","01.csharp/12.desktop-ui/26.messenger-pattern",{"title":1509,"path":1510,"stem":1511},"Стилі WPF — CSS для десктопу","/csharp/desktop-ui/styles-basics","01.csharp/12.desktop-ui/27.styles-basics",{"title":1513,"path":1514,"stem":1515},"CSS-like стилі Avalonia","/csharp/desktop-ui/27a.avalonia-css-styling","01.csharp/12.desktop-ui/27a.avalonia-css-styling",{"title":1517,"path":1518,"stem":1519},"Control Templates — Частина 1. Концепція та TemplateBinding","/csharp/desktop-ui/control-templates-part1","01.csharp/12.desktop-ui/28.control-templates-part1",{"title":1521,"path":1522,"stem":1523},"Control Templates — Частина 2. Named Parts та ContentPresenter","/csharp/desktop-ui/control-templates-part2","01.csharp/12.desktop-ui/28.control-templates-part2",{"title":1525,"path":1526,"stem":1527},"Control Themes в Avalonia — нова ера стилізації","/csharp/desktop-ui/28a.avalonia-control-themes","01.csharp/12.desktop-ui/28a.avalonia-control-themes",{"title":1529,"path":1530,"stem":1531},"Triggers та Visual State Manager у WPF","/csharp/desktop-ui/triggers-visual-states","01.csharp/12.desktop-ui/29.triggers-visual-states",{"title":1533,"path":1534,"stem":1535},"Pseudo-classes в Avalonia — замість WPF Triggers","/csharp/desktop-ui/29a.avalonia-pseudo-classes","01.csharp/12.desktop-ui/29a.avalonia-pseudo-classes",{"title":1537,"path":1538,"stem":1539},"Теми та ресурсні словники у WPF","/csharp/desktop-ui/resources-themes","01.csharp/12.desktop-ui/30.resources-themes",{"title":1541,"path":1542,"stem":1543},"Avalonia Themes — Fluent Design та система тематизації","/csharp/desktop-ui/30a.avalonia-themes-fluent","01.csharp/12.desktop-ui/30a.avalonia-themes-fluent",{"title":1545,"path":1546,"stem":1547},"Контроли колекцій — глибоке занурення","/csharp/desktop-ui/collection-controls","01.csharp/12.desktop-ui/31.collection-controls",{"title":1549,"path":1550,"stem":1551},"DataGrid — колонки та базове відображення","/csharp/desktop-ui/datagrid-part1","01.csharp/12.desktop-ui/32.datagrid-part1",{"title":1553,"path":1554,"stem":1555},"DataGrid — сортування, фільтрація, редагування","/csharp/desktop-ui/datagrid-part2","01.csharp/12.desktop-ui/32.datagrid-part2",{"title":1557,"path":1558,"stem":1559},"TreeView та GridView","/csharp/desktop-ui/treeview-listview","01.csharp/12.desktop-ui/33.treeview-listview",{"title":1561,"path":1562,"stem":1563},"Меню, Toolbar, ContextMenu, StatusBar","/csharp/desktop-ui/menus-toolbars","01.csharp/12.desktop-ui/34.menus-toolbars",{"title":1565,"path":1566,"stem":1567},"Навігація та керування вікнами. Частина 1: вікна та сторінки","/csharp/desktop-ui/navigation-windows-part1","01.csharp/12.desktop-ui/35.navigation-windows-part1",{"title":1569,"path":1570,"stem":1571},"Навігація та керування вікнами. Частина 2: MVVM-навігація","/csharp/desktop-ui/navigation-windows-part2","01.csharp/12.desktop-ui/35.navigation-windows-part2",{"title":1573,"path":1574,"stem":1575},"Avalonia — Навігація та діалоги","/csharp/desktop-ui/35a.avalonia-navigation-dialogs","01.csharp/12.desktop-ui/35a.avalonia-navigation-dialogs",{"title":1577,"path":1578,"stem":1579},"Діалоги та File Pickers у WPF","/csharp/desktop-ui/dialogs-file-pickers","01.csharp/12.desktop-ui/36.dialogs-file-pickers",{"title":1581,"path":1582,"stem":1583},"UserControl: компонентний підхід у WPF","/csharp/desktop-ui/user-controls","01.csharp/12.desktop-ui/37.user-controls",{"title":1585,"path":1586,"stem":1587},"Custom Controls: Lookless Controls у WPF","/csharp/desktop-ui/custom-controls","01.csharp/12.desktop-ui/38.custom-controls",{"title":1589,"path":1590,"stem":1591},"Avalonia TemplatedControl — Lookless Controls","/csharp/desktop-ui/38a.avalonia-templated-controls","01.csharp/12.desktop-ui/38a.avalonia-templated-controls",{"title":1593,"path":1594,"stem":1595},"Анімації у WPF: Storyboard та Easing Functions","/csharp/desktop-ui/animations-transitions","01.csharp/12.desktop-ui/39.animations-transitions",{"title":1597,"path":1598,"stem":1599},"Анімації в Avalonia","/csharp/desktop-ui/39a.avalonia-animations","01.csharp/12.desktop-ui/39a.avalonia-animations",{"title":1601,"path":1602,"stem":1603},"2D Графіка та Мультимедіа у WPF","/csharp/desktop-ui/media-graphics","01.csharp/12.desktop-ui/40.media-graphics",{"title":1605,"path":1606,"stem":1607},"Dependency Injection у WPF та Avalonia","/csharp/desktop-ui/di-integration","01.csharp/12.desktop-ui/41.di-integration",{"title":1609,"path":1610,"stem":1611},"SQLite та EF Core у десктопних додатках","/csharp/desktop-ui/data-persistence-part1","01.csharp/12.desktop-ui/42.data-persistence-part1",{"title":1613,"path":1614,"stem":1615},"Repository Pattern та Unit of Work","/csharp/desktop-ui/data-persistence-part2","01.csharp/12.desktop-ui/43.data-persistence-part2",{"title":1617,"path":1618,"stem":1619},"Тестування ViewModels","/csharp/desktop-ui/viewmodel-testing","01.csharp/12.desktop-ui/44.viewmodel-testing",{"title":1621,"path":1622,"stem":1623},"Avalonia Headless Testing — тестування UI без вікон","/csharp/desktop-ui/44a.avalonia-headless-testing","01.csharp/12.desktop-ui/44a.avalonia-headless-testing",{"title":1625,"path":1626,"stem":1627},"Кросплатформна розробка з Avalonia","/csharp/desktop-ui/avalonia-cross-platform","01.csharp/12.desktop-ui/45.avalonia-cross-platform",{"title":1629,"path":1630,"stem":1631},"Пакування та розгортання Avalonia додатків","/csharp/desktop-ui/avalonia-packaging-deployment","01.csharp/12.desktop-ui/46.avalonia-packaging-deployment",{"title":1633,"path":1634,"stem":1635},"Розгортання WPF застосунків","/csharp/desktop-ui/wpf-packaging-deployment","01.csharp/12.desktop-ui/47.wpf-packaging-deployment",{"title":1637,"path":1638,"stem":1639},"C# & .NET: The Ultimate Roadmap","/csharp/roadmap","01.csharp/roadmap",{"title":1641,"icon":1642,"path":1643,"stem":1644,"children":1645,"page":59},"C++","i-devicon-cplusplus","/cpp","02.cpp",[1646,1650,1654,1658,1662,1666,1670,1674,1678,1681,1685,1689,1693,1697,1701,1705,1709,1713,1717,1721,1725,1729,1733,1737,1741,1745,1749,1753,1757,1761],{"title":1647,"path":1648,"stem":1649},"Вступ у програмування та алгоритми","/cpp/intro-algorithms","02.cpp/01.intro-algorithms",{"title":1651,"path":1652,"stem":1653},"Code Style: угоди про оформлення коду","/cpp/code-style","02.cpp/02.code-style",{"title":1655,"path":1656,"stem":1657},"Середовище розробки та перший 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типу void","/cpp/void-pointers","02.cpp/20.void-pointers",{"title":1726,"path":1727,"stem":1728},"Вказівники на вказівники","/cpp/pointers-to-pointers","02.cpp/21.pointers-to-pointers",{"title":1730,"path":1731,"stem":1732},"Оператор доступу до членів через вказівник (->)","/cpp/member-access-operator","02.cpp/22.member-access-operator",{"title":1734,"path":1735,"stem":1736},"Цикл for-each (Range-based for)","/cpp/foreach-loop","02.cpp/23.foreach-loop",{"title":1738,"path":1739,"stem":1740},"Вказівники на функції","/cpp/function-pointers","02.cpp/24.function-pointers",{"title":1742,"path":1743,"stem":1744},"Лямбда-вирази","/cpp/lambdas","02.cpp/25.lambdas",{"title":1746,"path":1747,"stem":1748},"Лямбда-захоплення","/cpp/lambda-captures","02.cpp/26.lambda-captures",{"title":1750,"path":1751,"stem":1752},"Еліпсис","/cpp/ellipsis","02.cpp/27.ellipsis",{"title":1754,"path":1755,"stem":1756},"Аргументи командного рядка","/cpp/command-line-arguments","02.cpp/28.command-line-arguments",{"title":1758,"path":1759,"stem":1760},"Перерахування (enum)","/cpp/enum","02.cpp/29.enum",{"title":1762,"path":1763,"stem":1764},"План навчання: Курс C++ — Продовження (Статті 29–60+)","/cpp/curriculum-plan","02.cpp/curriculum-plan",{"title":1766,"icon":1767,"path":1768,"stem":1769,"children":1770,"page":59},"JavaScript","i-devicon-javascript","/javascript","03.javascript",[1771,1797,1851,1873,2177,2215],{"title":1772,"icon":1773,"path":1774,"stem":1775,"children":1776,"page":59},"Events","i-lucide-mouse-pointer-click","/javascript/events","03.javascript/01.events",[1777,1781,1785,1789,1793],{"title":1778,"path":1779,"stem":1780},"Вступ до подій браузера","/javascript/events/intro","03.javascript/01.events/01.intro",{"title":1782,"path":1783,"stem":1784},"Бульбашковий механізм (Bubbling) та занурення (Capturing)","/javascript/events/bubbling-capturing","03.javascript/01.events/02.bubbling-capturing",{"title":1786,"path":1787,"stem":1788},"Делегування подій (Event Delegation)","/javascript/events/delegate-events","03.javascript/01.events/03.delegate-events",{"title":1790,"path":1791,"stem":1792},"Типові дії браузера та preventDefault()","/javascript/events/prevent-default","03.javascript/01.events/04.prevent-default",{"title":1794,"path":1795,"stem":1796},"Запуск користувацьких подій (Custom Events)","/javascript/events/custom-events","03.javascript/01.events/05.custom-events",{"title":1798,"icon":1799,"path":1800,"stem":1801,"children":1802,"page":59},"Network","i-lucide-globe","/javascript/network","03.javascript/02.network",[1803,1807,1811,1815,1819,1823,1827,1831,1835,1839,1843,1847],{"title":1804,"path":1805,"stem":1806},"Fetch API - Сучасний підхід до HTTP-запитів","/javascript/network/01-fetch-api","03.javascript/02.network/01-fetch-api",{"title":1808,"path":1809,"stem":1810},"FormData - Робота з формами та файлами","/javascript/network/02-formdata","03.javascript/02.network/02-formdata",{"title":1812,"path":1813,"stem":1814},"Відстеження прогресу завантаження","/javascript/network/03-download-progress","03.javascript/02.network/03-download-progress",{"title":1816,"path":1817,"stem":1818},"Переривання fetch-запитів","/javascript/network/04-abort-requests","03.javascript/02.network/04-abort-requests",{"title":1820,"path":1821,"stem":1822},"CORS - Запити між різними джерелами","/javascript/network/05-cors","03.javascript/02.network/05-cors",{"title":1824,"path":1825,"stem":1826},"Fetch API - Повний довідник опцій","/javascript/network/06-fetch-options","03.javascript/02.network/06-fetch-options",{"title":1828,"path":1829,"stem":1830},"URL Objects - Робота з посиланнями","/javascript/network/07-url-objects","03.javascript/02.network/07-url-objects",{"title":1832,"path":1833,"stem":1834},"XMLHttpRequest - AJAX та низькорівневі запити","/javascript/network/08-xmlhttprequest","03.javascript/02.network/08-xmlhttprequest",{"title":1836,"path":1837,"stem":1838},"Відновлюване завантаження файлів","/javascript/network/09-resumable-upload","03.javascript/02.network/09-resumable-upload",{"title":1840,"path":1841,"stem":1842},"Cookies, document.cookie та світ після \"Cookiepocalypse\"","/javascript/network/10-cookies","03.javascript/02.network/10-cookies",{"title":1844,"path":1845,"stem":1846},"js-cookie: Керування Cookies без Болю","/javascript/network/11-js-cookie","03.javascript/02.network/11-js-cookie",{"title":1848,"path":1849,"stem":1850},"Axios: Потужний HTTP-клієнт для JavaScript","/javascript/network/12-axios","03.javascript/02.network/12-axios",{"title":1852,"icon":1853,"path":1854,"stem":1855,"children":1856,"page":59},"Bom","i-lucide-monitor","/javascript/bom","03.javascript/03.bom",[1857,1861,1865,1869],{"title":1858,"path":1859,"stem":1860},"LocalStorage, SessionStorage та patterns збереження даних","/javascript/bom/01-localstorage","03.javascript/03.bom/01-localstorage",{"title":1862,"path":1863,"stem":1864},"Location Object - Керування адресою сторінки","/javascript/bom/02-location-object","03.javascript/03.bom/02-location-object",{"title":1866,"path":1867,"stem":1868},"History API - Керування історією браузера","/javascript/bom/03-history-api","03.javascript/03.bom/03-history-api",{"title":1870,"path":1871,"stem":1872},"Navigator Object - Ідентифікація та Можливості Пристрою","/javascript/bom/04-navigator-object","03.javascript/03.bom/04-navigator-object",{"title":1874,"icon":1875,"path":1876,"stem":1877,"children":1878},"React","i-devicon-react","/javascript/react","03.javascript/04.react/index",[1879,1880,1884,1888,1892,1896,1959,1994,2146],{"title":1874,"path":1876,"stem":1877},{"title":1881,"path":1882,"stem":1883},"Робота з Формами в React","/javascript/react/react-forms","03.javascript/04.react/01.react-forms",{"title":1885,"path":1886,"stem":1887},"React Hook Form: Професійна Робота з Формами","/javascript/react/react-hook-form","03.javascript/04.react/02.react-hook-form",{"title":1889,"path":1890,"stem":1891},"React Hook Form: Глибоке Розуміння Архітектури та Оптимізації","/javascript/react/react-hook-form-new","03.javascript/04.react/02.react-hook-form-new",{"title":1893,"path":1894,"stem":1895},"Axios та React: Професійна Архітектура Запитів","/javascript/react/data-fetching-axios","03.javascript/04.react/03.data-fetching-axios",{"title":1897,"icon":132,"path":1898,"stem":1899,"children":1900},"Tanstack Query","/javascript/react/tanstack-query","03.javascript/04.react/04.tanstack-query/index",[1901,1903,1907,1911,1915,1919,1923,1927,1931,1935,1939,1943,1947,1951,1955],{"title":1902,"path":1898,"stem":1899},"TanStack Query: Майстерність Керування Станом Сервера",{"title":1904,"path":1905,"stem":1906},"Парадигма Server State: Чому useEffect недостатньо","/javascript/react/tanstack-query/server-state-paradigm","03.javascript/04.react/04.tanstack-query/01.server-state-paradigm",{"title":1908,"path":1909,"stem":1910},"Встановлення та Налаштування: Фундамент","/javascript/react/tanstack-query/installation-and-devtools","03.javascript/04.react/04.tanstack-query/02.installation-and-devtools",{"title":1912,"path":1913,"stem":1914},"Основи Запитів та Магія Ключів","/javascript/react/tanstack-query/query-basics-and-keys","03.javascript/04.react/04.tanstack-query/03.query-basics-and-keys",{"title":1916,"path":1917,"stem":1918},"Синхронізація Даних: Життєвий Цикл Запиту","/javascript/react/tanstack-query/data-synchronization","03.javascript/04.react/04.tanstack-query/04.data-synchronization",{"title":1920,"path":1921,"stem":1922},"Мутації та Інвалідація: Зміна Даних","/javascript/react/tanstack-query/mutations-and-invalidation","03.javascript/04.react/04.tanstack-query/05.mutations-and-invalidation",{"title":1924,"path":1925,"stem":1926},"Оптимістичні Оновлення: Швидше за Світло","/javascript/react/tanstack-query/optimistic-updates","03.javascript/04.react/04.tanstack-query/06.optimistic-updates",{"title":1928,"path":1929,"stem":1930},"Пагінація та Infinite Scroll","/javascript/react/tanstack-query/pagination-and-load-more","03.javascript/04.react/04.tanstack-query/07.pagination-and-load-more",{"title":1932,"path":1933,"stem":1934},"Просунуті Патерни та Оптимізація","/javascript/react/tanstack-query/advanced-patterns","03.javascript/04.react/04.tanstack-query/08.advanced-patterns",{"title":1936,"path":1937,"stem":1938},"Архітектура та Best Practices","/javascript/react/tanstack-query/architecture-and-best-practices","03.javascript/04.react/04.tanstack-query/09.architecture-and-best-practices",{"title":1940,"path":1941,"stem":1942},"Server-Side Rendering (SSR) та Гідратація","/javascript/react/tanstack-query/server-side-rendering","03.javascript/04.react/04.tanstack-query/10.server-side-rendering",{"title":1944,"path":1945,"stem":1946},"Стратегії Тестування","/javascript/react/tanstack-query/testing-strategies","03.javascript/04.react/04.tanstack-query/11.testing-strategies",{"title":1948,"path":1949,"stem":1950},"Аутентифікація та Обробка Помилок","/javascript/react/tanstack-query/authentication-and-errors","03.javascript/04.react/04.tanstack-query/12.authentication-and-errors",{"title":1952,"path":1953,"stem":1954},"React Suspense та Майбутнє","/javascript/react/tanstack-query/react-suspense","03.javascript/04.react/04.tanstack-query/13.react-suspense",{"title":1956,"path":1957,"stem":1958},"Глибоке Занурення в Продуктивність","/javascript/react/tanstack-query/performance-deep-dive","03.javascript/04.react/04.tanstack-query/14.performance-deep-dive",{"title":1960,"icon":1875,"path":1961,"stem":1962,"children":1963},"React Router","/javascript/react/react-router","03.javascript/04.react/05.react-router/index",[1964,1966,1970,1974,1978,1982,1986,1990],{"title":1965,"path":1961,"stem":1962},"React Router: Навігаційна система сучасного вебу",{"title":1967,"path":1968,"stem":1969},"Налаштування та Базовий Роутинг","/javascript/react/react-router/setup-and-basic-routing","03.javascript/04.react/05.react-router/01.setup-and-basic-routing",{"title":1971,"path":1972,"stem":1973},"Динамічна Навігація","/javascript/react/react-router/navigation-and-links","03.javascript/04.react/05.react-router/02.navigation-and-links",{"title":1975,"path":1976,"stem":1977},"Вкладені Маршрути та Макети","/javascript/react/react-router/nested-routes-and-layouts","03.javascript/04.react/05.react-router/03.nested-routes-and-layouts",{"title":1979,"path":1980,"stem":1981},"Динамічні Маршрути та Параметри","/javascript/react/react-router/dynamic-routing","03.javascript/04.react/05.react-router/04.dynamic-routing",{"title":1983,"path":1984,"stem":1985},"Data APIs: Loaders та Actions","/javascript/react/react-router/data-loading","03.javascript/04.react/05.react-router/05.data-loading",{"title":1987,"path":1988,"stem":1989},"Просунуті Патерни","/javascript/react/react-router/advanced-patterns","03.javascript/04.react/05.react-router/06.advanced-patterns",{"title":1991,"path":1992,"stem":1993},"Legacy Routing: Компонентний підхід","/javascript/react/react-router/legacy-routing","03.javascript/04.react/05.react-router/07.legacy-routing",{"title":1995,"icon":132,"path":1996,"stem":1997,"children":1998},"Redux","/javascript/react/redux","03.javascript/04.react/06.redux/index",[1999,2001,2017,2046,2055,2076,2092,2121],{"title":2000,"path":1996,"stem":1997},"Redux: Еволюція управління станом",{"title":14,"icon":15,"path":2002,"stem":2003,"children":2004,"page":59},"/javascript/react/redux/fundamentals","03.javascript/04.react/06.redux/01.fundamentals",[2005,2009,2013],{"title":2006,"path":2007,"stem":2008},"Вступ до State Management","/javascript/react/redux/fundamentals/intro-state-management","03.javascript/04.react/06.redux/01.fundamentals/01.intro-state-management",{"title":2010,"path":2011,"stem":2012},"Філософія Redux та Три Принципи","/javascript/react/redux/fundamentals/redux-philosophy","03.javascript/04.react/06.redux/01.fundamentals/02.redux-philosophy",{"title":2014,"path":2015,"stem":2016},"Чисті функції та Іммутабельність","/javascript/react/redux/fundamentals/pure-functions-immutability","03.javascript/04.react/06.redux/01.fundamentals/03.pure-functions-immutability",{"title":2018,"icon":132,"path":2019,"stem":2020,"children":2021,"page":59},"Classic Redux","/javascript/react/redux/classic-redux","03.javascript/04.react/06.redux/02.classic-redux",[2022,2026,2030,2034,2038,2042],{"title":2023,"path":2024,"stem":2025},"Створення Store (Classic Redux)","/javascript/react/redux/classic-redux/store-setup","03.javascript/04.react/06.redux/02.classic-redux/01.store-setup",{"title":2027,"path":2028,"stem":2029},"Actions, Constants та Action Creators","/javascript/react/redux/classic-redux/actions-constants","03.javascript/04.react/06.redux/02.classic-redux/02.actions-constants",{"title":2031,"path":2032,"stem":2033},"Логіка Reducers","/javascript/react/redux/classic-redux/reducers","03.javascript/04.react/06.redux/02.classic-redux/03.reducers",{"title":2035,"path":2036,"stem":2037},"Комбінування Reducers (Root Reducer)","/javascript/react/redux/classic-redux/data-flow","03.javascript/04.react/06.redux/02.classic-redux/04.data-flow",{"title":2039,"path":2040,"stem":2041},"Підключення до React (React-Redux)","/javascript/react/redux/classic-redux/react-redux-connection","03.javascript/04.react/06.redux/02.classic-redux/05.react-redux-connection",{"title":2043,"path":2044,"stem":2045},"Middleware та Асинхронність (Redux Thunk)","/javascript/react/redux/classic-redux/middleware-thunk","03.javascript/04.react/06.redux/02.classic-redux/06.middleware-thunk",{"title":2047,"icon":132,"path":2048,"stem":2049,"children":2050,"page":59},"Transition To Rtk","/javascript/react/redux/transition-to-rtk","03.javascript/04.react/06.redux/03.transition-to-rtk",[2051],{"title":2052,"path":2053,"stem":2054},"Проблеми класичного Redux","/javascript/react/redux/transition-to-rtk/problems-with-classic","03.javascript/04.react/06.redux/03.transition-to-rtk/01.problems-with-classic",{"title":2056,"icon":132,"path":2057,"stem":2058,"children":2059,"page":59},"Redux Toolkit","/javascript/react/redux/redux-toolkit","03.javascript/04.react/06.redux/04.redux-toolkit",[2060,2064,2068,2072],{"title":2061,"path":2062,"stem":2063},"Налаштування Store з 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дружити","/java/pr2/impedance-mismatch","04.java/pr2/09.impedance-mismatch",{"title":2285,"path":2286,"stem":2287},"JDBC: Перший контакт із базою даних","/java/pr2/jdbc-fundamentals","04.java/pr2/10.jdbc-fundamentals",{"title":2289,"path":2290,"stem":2291},"Якість коду: Spotless, SpotBugs та SonarQube","/java/pr2/10a.code-quality","04.java/pr2/10a.code-quality",{"title":2293,"path":2294,"stem":2295},"Connection Pool: Патерн Object Pool для JDBC-з'єднань","/java/pr2/connection-pool","04.java/pr2/11.connection-pool",{"title":2297,"path":2298,"stem":2299},"Row Data Gateway: Об'єкт як обгортка рядка таблиці","/java/pr2/row-data-gateway","04.java/pr2/12.row-data-gateway",{"title":2301,"path":2302,"stem":2303},"Table Data Gateway: Фасад таблиці як архітектурний відступ","/java/pr2/table-data-gateway","04.java/pr2/13.table-data-gateway",{"title":2305,"path":2306,"stem":2307},"Repository + Data Mapper: Правильна шарова архітектура з JDBC","/java/pr2/repository-data-mapper","04.java/pr2/14.repository-data-mapper",{"title":2309,"path":2310,"stem":2311},"Identity Map: Кешування сутностей у рамках сесії","/java/pr2/identity-map","04.java/pr2/15.identity-map",{"title":2313,"path":2314,"stem":2315},"Unit of Work: Відстеження змін і координація JDBC-транзакцій","/java/pr2/unit-of-work","04.java/pr2/16.unit-of-work",{"title":2317,"path":2318,"stem":2319},"Strategy: Замінювані SQL-стратегії для підтримки різних СУБД","/java/pr2/strategy-sql","04.java/pr2/17.strategy-sql",{"title":2321,"path":2322,"stem":2323},"Proxy: Lazy Loading для One-To-Many колекцій","/java/pr2/proxy-lazy-loading","04.java/pr2/18.proxy-lazy-loading",{"title":2325,"path":2326,"stem":2327},"Generic Repository через Java Reflection: анотації та динамічний SQL","/java/pr2/generic-repository-reflection","04.java/pr2/19.generic-repository-reflection",{"title":2329,"path":2330,"stem":2331},"Specification Pattern: Композиція бізнес-правил для складних 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БД","/databases/intro/logical-schema","06.databases/01.intro/04.logical-schema",{"title":2381,"path":2382,"stem":2383},"Класифікація таблиць","/databases/intro/table-classification","06.databases/01.intro/05.table-classification",{"title":2385,"path":2386,"stem":2387},"PlantUML для баз даних","/databases/intro/plantuml-diagrams","06.databases/01.intro/06.plantuml-diagrams",{"title":2389,"icon":2354,"path":2390,"stem":2391,"children":2392,"page":59},"MS SQL Server Start","/databases/ms-sql-server-start","06.databases/02.ms-sql-server-start",[2393,2397,2403,2407],{"title":2394,"path":2395,"stem":2396},"Типи даних у MS SQL Server","/databases/ms-sql-server-start/data-types","06.databases/02.ms-sql-server-start/01.data-types",{"title":2398,"path":2399,"stem":2400,"children":2401},"Індекси у MS SQL 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TABLE)","/databases/sql/ddl-create-table","06.databases/03.sql/01.ddl-create-table",{"title":2425,"path":2426,"stem":2427},"DDL - Зміна та видалення таблиць (ALTER, DROP)","/databases/sql/ddl-alter-drop-table","06.databases/03.sql/02.ddl-alter-drop-table",{"title":2429,"path":2430,"stem":2431},"SELECT запити - Основи","/databases/sql/select-queries-fundamentals","06.databases/03.sql/03.select-queries-fundamentals",{"title":2433,"path":2434,"stem":2435},"SELECT запити - Розширені можливості","/databases/sql/select-queries-advanced","06.databases/03.sql/04.select-queries-advanced",{"title":2437,"path":2438,"stem":2439},"INSERT запити - Додавання даних","/databases/sql/insert-queries","06.databases/03.sql/05.insert-queries",{"title":2441,"path":2442,"stem":2443},"UPDATE та DELETE запити","/databases/sql/update-delete-queries","06.databases/03.sql/06.update-delete-queries",{"title":2445,"path":2446,"stem":2447},"Транзакції в SQL","/databases/sql/transactions","06.databases/03.sql/07.transactions",{"title":2449,"icon":2354,"path":2450,"stem":2451,"children":2452,"page":59},"Multi Table Databases","/databases/multi-table-databases","06.databases/04.multi-table-databases",[2453,2457,2461,2465,2469,2473],{"title":2454,"path":2455,"stem":2456},"Зв'язки та нормалізація БД","/databases/multi-table-databases/relationships-and-normalization","06.databases/04.multi-table-databases/00.relationships-and-normalization",{"title":2458,"path":2459,"stem":2460},"INNER JOIN - З'єднання таблиць","/databases/multi-table-databases/inner-join","06.databases/04.multi-table-databases/01.inner-join",{"title":2462,"path":2463,"stem":2464},"OUTER JOINs - LEFT, RIGHT, FULL","/databases/multi-table-databases/outer-joins","06.databases/04.multi-table-databases/02.outer-joins",{"title":2466,"path":2467,"stem":2468},"CROSS та SELF JOINs","/databases/multi-table-databases/cross-self-joins","06.databases/04.multi-table-databases/03.cross-self-joins",{"title":2470,"path":2471,"stem":2472},"Підзапити (Subqueries)","/databases/multi-table-databases/subqueries","06.databases/04.multi-table-databases/04.subqueries",{"title":2474,"path":2475,"stem":2476},"Агрегації з JOIN","/databases/multi-table-databases/aggregations-with-joins","06.databases/04.multi-table-databases/05.aggregations-with-joins",{"title":2478,"icon":2479,"path":2480,"stem":2481,"children":2482,"page":59},"Aggregate Functions","i-lucide-calculator","/databases/aggregate-functions","06.databases/05.aggregate-functions",[2483,2487,2491],{"title":2484,"path":2485,"stem":2486},"Функції агрегування в MS SQL Server","/databases/aggregate-functions/introduction-aggregate-functions","06.databases/05.aggregate-functions/01.introduction-aggregate-functions",{"title":2488,"path":2489,"stem":2490},"Групування даних в MS SQL Server","/databases/aggregate-functions/grouping-data","06.databases/05.aggregate-functions/02.grouping-data",{"title":2492,"path":2493,"stem":2494},"Підзапити з агрегатними функціями","/databases/aggregate-functions/subqueries-aggregates","06.databases/05.aggregate-functions/03.subqueries-aggregates",{"title":2496,"icon":2497,"path":2498,"stem":2499,"children":2500,"page":59},"Тригери та зберігаємі процедури","i-lucide-database-zap","/databases/triggers-stored-procedures","06.databases/07.triggers-stored-procedures",[2501,2505,2509,2513,2517,2521,2525],{"title":2502,"path":2503,"stem":2504},"DML-тригери","/databases/triggers-stored-procedures/dml-triggers","06.databases/07.triggers-stored-procedures/01.dml-triggers",{"title":2506,"path":2507,"stem":2508},"DDL-тригери","/databases/triggers-stored-procedures/ddl-triggers","06.databases/07.triggers-stored-procedures/02.ddl-triggers",{"title":2510,"path":2511,"stem":2512},"Transact-SQL 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Docker","/tools/docker/networking-basics","07.tools/01.docker/14.networking-basics",{"title":2630,"path":2631,"stem":2632},"Змінні оточення та конфігурація","/tools/docker/environment-and-configuration","07.tools/01.docker/15.environment-and-configuration",{"title":2634,"path":2635,"stem":2636},"Docker Compose — оркестрація контейнерів","/tools/docker/docker-compose-basics","07.tools/01.docker/16.docker-compose-basics",{"title":2638,"path":2639,"stem":2640},"Docker Compose — Multi-Service застосунки","/tools/docker/compose-multi-service","07.tools/01.docker/17.compose-multi-service",{"title":2642,"icon":2643,"path":2644,"stem":2645,"children":2646,"page":59},"Software Engineering","i-lucide-code-2","/software-engineering","09.software-engineering",[2647,2651,2655,2659,2663,2667,2671,2675,2679,2683,2687],{"title":2648,"path":2649,"stem":2650},"1. 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Частина 2","/html-css/css-layout-grid-advanced","12.html-css/16.css-layout-grid-advanced",{"title":2861,"path":2862,"stem":2863},"Позиціонування в CSS. Z-index. Stacking Context","/html-css/css-positioning","12.html-css/17.css-positioning",{"title":2865,"path":2866,"stem":2867},"CSS Анімації та Переходи","/html-css/css-animations-transitions","12.html-css/18.css-animations-transitions",{"title":2869,"path":2870,"stem":2871},"Адаптивний дизайн. Media Queries. Частина 1","/html-css/css-responsive-media-queries","12.html-css/19.css-responsive-media-queries",{"title":2873,"path":2874,"stem":2875},"Адаптивний дизайн. Частина 2: clamp(), Container Queries, @layer","/html-css/css-responsive-advanced","12.html-css/20.css-responsive-advanced",{"title":2877,"path":2878,"stem":2879},"CSS Custom Properties. Методології. Сучасний CSS","/html-css/css-variables-methodologies","12.html-css/21.css-variables-methodologies",{"title":2881,"path":2882,"stem":2883},"Сучасний CSS 2023–2025: Нові можливості","/html-css/css-modern-features","12.html-css/22.css-modern-features",{"title":2885,"path":2886,"stem":2887},"CSS Nesting, @layer, @scope та @property: нативний препроцесор","/html-css/22a.css-nesting-modern-syntax","12.html-css/22a.css-nesting-modern-syntax",{"title":2889,"path":2890,"stem":2891},"CSS для форм та інтерактивних станів","/html-css/css-forms-interactive-states","12.html-css/23.css-forms-interactive-states",{"title":2893,"path":2894,"stem":2895},"Доступність у CSS (CSS Accessibility)","/html-css/css-accessibility","12.html-css/24.css-accessibility",{"title":2897,"path":2898,"stem":2899},"CSS-функції та сучасні sizing primitives","/html-css/css-functions-sizing","12.html-css/25.css-functions-sizing",{"title":2901,"path":2902,"stem":2903},"Rendering Pipeline і CSS Performance","/html-css/css-rendering-performance","12.html-css/26.css-rendering-performance",{"title":2905,"path":2906,"stem":2907},"CSS Best Practices: типові ситуації та правильні рішення","/html-css/css-best-practices","12.html-css/27.css-best-practices",{"title":2909,"path":2910,"stem":2911,"children":2912,"page":59},"Tailwind","/tailwind","21.tailwind",[2913,2917,2921,2925,2929,2933,2937,2941],{"title":2914,"path":2915,"stem":2916},"Що таке Tailwind CSS і навіщо він потрібен","/tailwind/tailwind-intro-philosophy","21.tailwind/01.tailwind-intro-philosophy",{"title":2918,"path":2919,"stem":2920},"Встановлення та налаштування Tailwind CSS v4","/tailwind/tailwind-installation-setup","21.tailwind/02.tailwind-installation-setup",{"title":2922,"path":2923,"stem":2924},"Utility-класи: основи та система Tailwind","/tailwind/tailwind-utility-classes-core","21.tailwind/03.tailwind-utility-classes-core",{"title":2926,"path":2927,"stem":2928},"Layout: Flexbox та Grid через Tailwind","/tailwind/tailwind-flexbox-grid","21.tailwind/04.tailwind-flexbox-grid",{"title":2930,"path":2931,"stem":2932},"Кастомізація теми через @theme у Tailwind v4","/tailwind/tailwind-theme-customization","21.tailwind/05.tailwind-theme-customization",{"title":2934,"path":2935,"stem":2936},"Варіанти: hover, focus, responsive, dark mode та нові v4","/tailwind/tailwind-variants-states","21.tailwind/06.tailwind-variants-states",{"title":2938,"path":2939,"stem":2940},"Типографіка та система кольорів у Tailwind v4","/tailwind/tailwind-typography-colors","21.tailwind/07.tailwind-typography-colors",{"title":2942,"path":2943,"stem":2944},"Компоненти та повторюваність: @apply, @utility та патерни","/tailwind/tailwind-components-patterns","21.tailwind/08.tailwind-components-patterns",{"title":2946,"path":2947,"stem":2948},"Showcase Компонентів kostyl.dev","/test-new-components","98.test-new-components",{"id":2950,"title":2309,"body":2951,"description":8316,"extension":8317,"links":8318,"meta":8319,"navigation":3010,"path":2310,"seo":8320,"stem":2311,"__hash__":8321},"docs/04.java/pr2/15.identity-map.md",{"type":2952,"value":2953,"toc":8289},"minimark",[2954,2958,2963,2967,3264,3267,3285,3291,3308,3314,3317,3321,3331,3344,3351,3428,3435,3467,3469,3476,3479,4297,4312,4314,4318,4332,4347,4560,5879,5887,5894,5935,5943,5956,5972,5974,5978,6719,6749,6910,6914,6921,7061,7065,7068,7181,7194,7198,7201,7407,7411,7418,7426,7428,7432,7435,7439,7442,7450,7457,7461,7467,7477,7529,7533,7545,7561,7568,7574,7592,7677,7680,7682,7686,7738,7749,7751,7755,7929,8119,8285],[2955,2956,2309],"h1",{"id":2957},"identity-map-кешування-сутностей-у-рамках-сесії",[2959,2960,2962],"h2",{"id":2961},"вступ-коли-два-обєкти-це-один-і-той-самий-автор","Вступ: Коли два об'єкти — це один і той самий автор",[2964,2965,2966],"p",{},"Розглянемо типовий сценарій у нашому репозиторії аудіоплатформи. Бізнес-логіка виконує дві операції в рамках однієї транзакції: отримати автора для побудови звіту і окремо — для перевірки прав доступу.",[2968,2969,2974],"pre",{"className":2970,"code":2971,"language":2972,"meta":2973,"style":2973},"language-java shiki shiki-themes light-plus dark-plus dark-plus","AuthorRepository repo = new JdbcAuthorRepository(cm);\n\nUUID tarasId = taras.getId();\n\n// Перший виклик — SELECT з БД\nAuthor author1 = repo.findById(tarasId).orElseThrow();\n\n// ... кілька рядків бізнес-логіки ...\n\n// Другий виклик — знову SELECT з БД\nAuthor author2 = repo.findById(tarasId).orElseThrow();\n\n// Здається, це один автор — але Java каже інакше\nSystem.out.println(author1 == author2);           // false — різні об'єкти в пам'яті\nSystem.out.println(author1.equals(author2));       // true — якщо equals через id\n\n// Оновлюємо через перший об'єкт\nauthor1.setFirstName(\"Тарас\");\nrepo.update(author1);\n\n// Другий об'єкт — застарілий! Він досі зберігає старе ім'я.\nSystem.out.println(author2.getFirstName()); // ← старе значення\n","java","",[2975,2976,2977,3005,3012,3035,3040,3047,3074,3079,3085,3090,3096,3118,3123,3129,3151,3181,3186,3192,3211,3224,3229,3235],"code",{"__ignoreMap":2973},[2978,2979,2982,2986,2990,2994,2998,3002],"span",{"class":2980,"line":2981},"line",1,[2978,2983,2985],{"class":2984},"sN1BT","AuthorRepository",[2978,2987,2989],{"class":2988},"siwwj"," repo",[2978,2991,2993],{"class":2992},"sHH4Y"," = ",[2978,2995,2997],{"class":2996},"sCDza","new",[2978,2999,3001],{"class":3000},"s8Opu"," JdbcAuthorRepository",[2978,3003,3004],{"class":2992},"(cm);\n",[2978,3006,3008],{"class":2980,"line":3007},2,[2978,3009,3011],{"emptyLinePlaceholder":3010},true,"\n",[2978,3013,3015,3018,3021,3023,3026,3029,3032],{"class":2980,"line":3014},3,[2978,3016,3017],{"class":2984},"UUID",[2978,3019,3020],{"class":2988}," tarasId",[2978,3022,2993],{"class":2992},[2978,3024,3025],{"class":2988},"taras",[2978,3027,3028],{"class":2992},".",[2978,3030,3031],{"class":3000},"getId",[2978,3033,3034],{"class":2992},"();\n",[2978,3036,3038],{"class":2980,"line":3037},4,[2978,3039,3011],{"emptyLinePlaceholder":3010},[2978,3041,3043],{"class":2980,"line":3042},5,[2978,3044,3046],{"class":3045},"spJ8K","// Перший виклик — SELECT з БД\n",[2978,3048,3050,3053,3056,3058,3061,3063,3066,3069,3072],{"class":2980,"line":3049},6,[2978,3051,3052],{"class":2984},"Author",[2978,3054,3055],{"class":2988}," author1",[2978,3057,2993],{"class":2992},[2978,3059,3060],{"class":2988},"repo",[2978,3062,3028],{"class":2992},[2978,3064,3065],{"class":3000},"findById",[2978,3067,3068],{"class":2992},"(tarasId).",[2978,3070,3071],{"class":3000},"orElseThrow",[2978,3073,3034],{"class":2992},[2978,3075,3077],{"class":2980,"line":3076},7,[2978,3078,3011],{"emptyLinePlaceholder":3010},[2978,3080,3082],{"class":2980,"line":3081},8,[2978,3083,3084],{"class":3045},"// ... кілька рядків бізнес-логіки ...\n",[2978,3086,3088],{"class":2980,"line":3087},9,[2978,3089,3011],{"emptyLinePlaceholder":3010},[2978,3091,3093],{"class":2980,"line":3092},10,[2978,3094,3095],{"class":3045},"// Другий виклик — знову SELECT з БД\n",[2978,3097,3099,3101,3104,3106,3108,3110,3112,3114,3116],{"class":2980,"line":3098},11,[2978,3100,3052],{"class":2984},[2978,3102,3103],{"class":2988}," author2",[2978,3105,2993],{"class":2992},[2978,3107,3060],{"class":2988},[2978,3109,3028],{"class":2992},[2978,3111,3065],{"class":3000},[2978,3113,3068],{"class":2992},[2978,3115,3071],{"class":3000},[2978,3117,3034],{"class":2992},[2978,3119,3121],{"class":2980,"line":3120},12,[2978,3122,3011],{"emptyLinePlaceholder":3010},[2978,3124,3126],{"class":2980,"line":3125},13,[2978,3127,3128],{"class":3045},"// Здається, це один автор — але Java каже інакше\n",[2978,3130,3132,3135,3137,3140,3142,3145,3148],{"class":2980,"line":3131},14,[2978,3133,3134],{"class":2988},"System",[2978,3136,3028],{"class":2992},[2978,3138,3139],{"class":2988},"out",[2978,3141,3028],{"class":2992},[2978,3143,3144],{"class":3000},"println",[2978,3146,3147],{"class":2992},"(author1 == author2);           ",[2978,3149,3150],{"class":3045},"// false — різні об'єкти в пам'яті\n",[2978,3152,3154,3156,3158,3160,3162,3164,3167,3170,3172,3175,3178],{"class":2980,"line":3153},15,[2978,3155,3134],{"class":2988},[2978,3157,3028],{"class":2992},[2978,3159,3139],{"class":2988},[2978,3161,3028],{"class":2992},[2978,3163,3144],{"class":3000},[2978,3165,3166],{"class":2992},"(",[2978,3168,3169],{"class":2988},"author1",[2978,3171,3028],{"class":2992},[2978,3173,3174],{"class":3000},"equals",[2978,3176,3177],{"class":2992},"(author2));       ",[2978,3179,3180],{"class":3045},"// true — якщо equals через id\n",[2978,3182,3184],{"class":2980,"line":3183},16,[2978,3185,3011],{"emptyLinePlaceholder":3010},[2978,3187,3189],{"class":2980,"line":3188},17,[2978,3190,3191],{"class":3045},"// Оновлюємо через перший об'єкт\n",[2978,3193,3195,3197,3199,3202,3204,3208],{"class":2980,"line":3194},18,[2978,3196,3169],{"class":2988},[2978,3198,3028],{"class":2992},[2978,3200,3201],{"class":3000},"setFirstName",[2978,3203,3166],{"class":2992},[2978,3205,3207],{"class":3206},"sbdoH","\"Тарас\"",[2978,3209,3210],{"class":2992},");\n",[2978,3212,3214,3216,3218,3221],{"class":2980,"line":3213},19,[2978,3215,3060],{"class":2988},[2978,3217,3028],{"class":2992},[2978,3219,3220],{"class":3000},"update",[2978,3222,3223],{"class":2992},"(author1);\n",[2978,3225,3227],{"class":2980,"line":3226},20,[2978,3228,3011],{"emptyLinePlaceholder":3010},[2978,3230,3232],{"class":2980,"line":3231},21,[2978,3233,3234],{"class":3045},"// Другий об'єкт — застарілий! Він досі зберігає старе ім'я.\n",[2978,3236,3238,3240,3242,3244,3246,3248,3250,3253,3255,3258,3261],{"class":2980,"line":3237},22,[2978,3239,3134],{"class":2988},[2978,3241,3028],{"class":2992},[2978,3243,3139],{"class":2988},[2978,3245,3028],{"class":2992},[2978,3247,3144],{"class":3000},[2978,3249,3166],{"class":2992},[2978,3251,3252],{"class":2988},"author2",[2978,3254,3028],{"class":2992},[2978,3256,3257],{"class":3000},"getFirstName",[2978,3259,3260],{"class":2992},"()); ",[2978,3262,3263],{"class":3045},"// ← старе значення\n",[2964,3265,3266],{},"Ця ситуація демонструє три окремих проблеми, що поглиблюють одна одну:",[2964,3268,3269,3273,3274,3277,3278,3281,3282,3284],{},[3270,3271,3272],"strong",{},"По-перше, надлишкові запити до бази даних."," Кожен виклик ",[2975,3275,3276],{},"findById()"," виконує ",[2975,3279,3280],{},"SELECT","-запит, навіть якщо ми вже завантажили цей об'єкт секунду тому. При складному сценарії — збереження аудіокниги (що завантажує автора), перевірка рекомендацій (що знову завантажує того самого автора), побудова відповіді API (ще один ",[2975,3283,3065],{},") — кількість зайвих запитів може вимірюватися десятками за одну HTTP-сесію.",[2964,3286,3287,3290],{},[3270,3288,3289],{},"По-друге, розбіжність стану."," Коли два різних фрагменти коду тримають посилання на «однакову» сутність, зміна через одне посилання не відображається в іншому. Система має суперечливий стан у пам'яті.",[2964,3292,3293,3296,3297,3300,3301,3303,3304,3307],{},[3270,3294,3295],{},"По-третє, порушення семантики ідентичності."," У реляційній базі даних сутність ",[3270,3298,3299],{},"однозначно"," визначається своїм первинним ключем — один ",[2975,3302,3017],{}," відповідає одному рядку. У Java-програмі без додаткових механізмів той самий рядок може бути представлений скількома завгодно різними об'єктами одночасно. Це і є той самий ",[3270,3305,3306],{},"Impedance Mismatch"," у питанні ідентичності, що ми описували у статті 09.",[2964,3309,3310,3311,3028],{},"Рішення — ",[3270,3312,3313],{},"Identity Map",[3315,3316],"hr",{},[2959,3318,3320],{"id":3319},"концепція-що-таке-identity-map","Концепція: Що таке Identity Map",[2964,3322,3323,3325,3326,3330],{},[3270,3324,3313],{}," (Фаулер, ",[3327,3328,3329],"em",{},"Patterns of Enterprise Application Architecture",", 2002):",[3332,3333,3334,3339],"blockquote",{},[2964,3335,3336],{},[3327,3337,3338],{},"«Ensures that each object gets loaded only once by keeping every loaded object in a map. Looks up objects using the map when referring to them.»",[2964,3340,3341],{},[3327,3342,3343],{},"«Гарантує, що кожен об'єкт завантажується лише один раз, зберігаючи кожен завантажений об'єкт у Map. При зверненні до об'єктів шукає їх у цьому Map.»",[2964,3345,3346,3347,3350],{},"Identity Map — це ",[3270,3348,3349],{},"реєстр"," завантажених об'єктів, організований за первинним ключем. Перш ніж звертатися до бази даних, репозиторій перевіряє: «чи є цей об'єкт вже в пам'яті?». Якщо так — повертає його з кешу. Якщо ні — завантажує з БД і кладе у кеш для майбутніх звернень.",[3352,3353,3354],"mermaid",{},[2968,3355,3358],{"className":3356,"code":3357,"language":3352,"meta":2973,"style":2973},"language-mermaid shiki shiki-themes light-plus dark-plus dark-plus","flowchart TD\n    CL[\"Клієнт викликає\u003Cbr/>findById(id)\"]\n    CHK{\"Identity Map\u003Cbr/>містить id?\"}\n    RET[\"Повернути\u003Cbr/>кешований об'єкт\u003Cbr/>(0 запитів до БД)\"]\n    DB[\"Виконати\u003Cbr/>SELECT ... WHERE id=?\"]\n    CACHE[\"Зберегти об'єкт\u003Cbr/>у Identity Map\"]\n    RESP[\"Повернути\u003Cbr/>новий об'єкт\"]\n\n    CL --> CHK\n    CHK -- \"так (cache hit)\" --> RET\n    CHK -- \"ні (cache miss)\" --> DB --> CACHE --> RESP\n\n    style RET fill:#22c55e,stroke:#15803d,color:#ffffff\n    style DB fill:#f59e0b,stroke:#b45309,color:#000000\n",[2975,3359,3360,3365,3370,3375,3380,3385,3390,3395,3399,3404,3409,3414,3418,3423],{"__ignoreMap":2973},[2978,3361,3362],{"class":2980,"line":2981},[2978,3363,3364],{},"flowchart TD\n",[2978,3366,3367],{"class":2980,"line":3007},[2978,3368,3369],{},"    CL[\"Клієнт викликає\u003Cbr/>findById(id)\"]\n",[2978,3371,3372],{"class":2980,"line":3014},[2978,3373,3374],{},"    CHK{\"Identity Map\u003Cbr/>містить id?\"}\n",[2978,3376,3377],{"class":2980,"line":3037},[2978,3378,3379],{},"    RET[\"Повернути\u003Cbr/>кешований об'єкт\u003Cbr/>(0 запитів до БД)\"]\n",[2978,3381,3382],{"class":2980,"line":3042},[2978,3383,3384],{},"    DB[\"Виконати\u003Cbr/>SELECT ... WHERE id=?\"]\n",[2978,3386,3387],{"class":2980,"line":3049},[2978,3388,3389],{},"    CACHE[\"Зберегти об'єкт\u003Cbr/>у Identity Map\"]\n",[2978,3391,3392],{"class":2980,"line":3076},[2978,3393,3394],{},"    RESP[\"Повернути\u003Cbr/>новий об'єкт\"]\n",[2978,3396,3397],{"class":2980,"line":3081},[2978,3398,3011],{"emptyLinePlaceholder":3010},[2978,3400,3401],{"class":2980,"line":3087},[2978,3402,3403],{},"    CL --> CHK\n",[2978,3405,3406],{"class":2980,"line":3092},[2978,3407,3408],{},"    CHK -- \"так (cache hit)\" --> RET\n",[2978,3410,3411],{"class":2980,"line":3098},[2978,3412,3413],{},"    CHK -- \"ні (cache miss)\" --> DB --> CACHE --> RESP\n",[2978,3415,3416],{"class":2980,"line":3120},[2978,3417,3011],{"emptyLinePlaceholder":3010},[2978,3419,3420],{"class":2980,"line":3125},[2978,3421,3422],{},"    style RET fill:#22c55e,stroke:#15803d,color:#ffffff\n",[2978,3424,3425],{"class":2980,"line":3131},[2978,3426,3427],{},"    style DB fill:#f59e0b,stroke:#b45309,color:#000000\n",[2964,3429,3430,3431,3434],{},"Ключова гарантія Identity Map: ",[3270,3432,3433],{},"для одного первинного ключа завжди існує не більше одного Java-об'єкта в пам'яті",". Це вирішує всі три проблеми одночасно:",[3436,3437,3438,3447,3460],"ul",{},[3439,3440,3441,3442,3444,3445],"li",{},"Зайвий ",[2975,3443,3280],{}," не виконується при повторному ",[2975,3446,3065],{},[3439,3448,3449,3450,3452,3453,3455,3456,3459],{},"Обидва посилання (",[2975,3451,3169],{}," і ",[2975,3454,3252],{},") вказують на ",[3270,3457,3458],{},"один і той самий об'єкт"," у пам'яті",[3439,3461,3462,3463,3466],{},"Семантика ідентичності Java (",[2975,3464,3465],{},"==",") збігається з семантикою БД (первинний ключ)",[3315,3468],{},[2959,3470,3472,3473],{"id":3471},"реалізація-identitymapid-t","Реалізація ",[2975,3474,3475],{},"IdentityMap\u003CID, T>",[2964,3477,3478],{},"Identity Map є самостійним компонентом з єдиною відповідальністю: зберігати і повертати об'єкти за їх ідентифікаторами. Він не знає ані про SQL, ані про конкретні сутності — це чистий кеш.",[2968,3480,3483],{"className":2970,"code":3481,"language":2972,"meta":3482,"style":2973},"package com.example.audiobook.persistence;\n\nimport java.util.HashMap;\nimport java.util.Map;\nimport java.util.Optional;\n\n/**\n * Identity Map — реєстр завантажених об'єктів, індексований за первинним ключем.\n * \u003Cp>\n * Гарантує, що для кожного значення ключа {@code ID} у пам'яті існує\n * не більше одного екземпляра типу {@code T}. При повторному запиті\n * з тим самим ключем повертає той самий об'єкт (не копію), що:\n * \u003Cul>\n *   \u003Cli>усуває зайві SELECT-запити до БД;\u003C/li>\n *   \u003Cli>підтримує узгодженість стану у рамках сесії;\u003C/li>\n *   \u003Cli>вирівнює семантику ідентичності Java та реляційної БД.\u003C/li>\n * \u003C/ul>\n *\n * \u003Cp>\u003Cb>Область видимості:\u003C/b> один екземпляр Identity Map повинен\n * існувати в межах однієї логічної одиниці роботи (запит, транзакція\n * або сесія). Він \u003Cem>не є\u003C/em> глобальним або thread-safe кешем.\n *\n * @param \u003CID> тип первинного ключа (наприклад, {@code UUID})\n * @param \u003CT>  тип доменної сутності (наприклад, {@code Author})\n */\npublic class IdentityMap\u003CID, T> {\n\n    /**\n     * Внутрішнє сховище: первинний ключ → екземпляр сутності.\n     * \u003Cp>\n     * Використовуємо {@link HashMap} (не {@link java.util.concurrent.ConcurrentHashMap}),\n     * оскільки Identity Map призначений для однопотокового використання\n     * у рамках однієї сесії/транзакції.\n     */\n    private final Map\u003CID, T> store = new HashMap\u003C>();\n\n    /**\n     * Шукає об'єкт у кеші за первинним ключем.\n     *\n     * @param id первинний ключ\n     * @return {@link Optional} з об'єктом, якщо він раніше був завантажений;\n     *         {@link Optional#empty()} якщо cache miss\n     */\n    public Optional\u003CT> get(ID id) {\n        return Optional.ofNullable(store.get(id));\n    }\n\n    /**\n     * Реєструє об'єкт у кеші після завантаження з БД.\n     * \u003Cp>\n     * Якщо об'єкт з таким {@code id} вже зареєстрований — він буде замінений.\n     * Зазвичай це не має відбуватися у нормальному потоці роботи.\n     *\n     * @param id     первинний ключ\n     * @param entity завантажений об'єкт\n     */\n    public void put(ID id, T entity) {\n        store.put(id, entity);\n    }\n\n    /**\n     * Видаляє об'єкт із кешу.\n     * \u003Cp>\n     * Викликається після успішного {@code DELETE} або при явній інвалідації\n     * (наприклад, у {@link com.example.audiobook.repository.CachedJdbcRepository#deleteById}).\n     *\n     * @param id первинний ключ\n     */\n    public void remove(ID id) {\n        store.remove(id);\n    }\n\n    /**\n     * Перевіряє, чи об'єкт з даним ключем зареєстрований у кеші.\n     *\n     * @param id первинний ключ\n     * @return {@code true} якщо cache hit\n     */\n    public boolean contains(ID id) {\n        return store.containsKey(id);\n    }\n\n    /**\n     * Очищає весь кеш.\n     * \u003Cp>\n     * Викликається в кінці сесії або при явному скиданні стану.\n     * Після виклику наступний {@code findById} знову звернеться до БД.\n     */\n    public void clear() {\n        store.clear();\n    }\n\n    /**\n     * Повертає кількість об'єктів у кеші.\n     * Корисно для діагностики та тестів.\n     */\n    public int size() {\n        return store.size();\n    }\n}\n","showLineNumbers",[2975,3484,3485,3494,3498,3506,3513,3520,3524,3529,3534,3539,3544,3549,3554,3559,3564,3569,3574,3579,3584,3589,3594,3599,3603,3618,3631,3637,3664,3669,3675,3681,3687,3693,3699,3705,3711,3747,3752,3757,3763,3769,3783,3794,3815,3820,3846,3870,3876,3881,3886,3892,3897,3903,3909,3914,3926,3939,3944,3969,3983,3988,3993,3998,4004,4009,4015,4021,4026,4037,4042,4060,4073,4078,4083,4088,4094,4099,4110,4120,4125,4144,4159,4164,4169,4174,4180,4185,4191,4197,4202,4215,4227,4232,4237,4242,4248,4254,4259,4272,4286,4291],{"__ignoreMap":2973},[2978,3486,3487,3491],{"class":2980,"line":2981},[2978,3488,3490],{"class":3489},"su1O8","package",[2978,3492,3493],{"class":2992}," com.example.audiobook.persistence;\n",[2978,3495,3496],{"class":2980,"line":3007},[2978,3497,3011],{"emptyLinePlaceholder":3010},[2978,3499,3500,3503],{"class":2980,"line":3014},[2978,3501,3502],{"class":3489},"import",[2978,3504,3505],{"class":2992}," java.util.HashMap;\n",[2978,3507,3508,3510],{"class":2980,"line":3037},[2978,3509,3502],{"class":3489},[2978,3511,3512],{"class":2992}," java.util.Map;\n",[2978,3514,3515,3517],{"class":2980,"line":3042},[2978,3516,3502],{"class":3489},[2978,3518,3519],{"class":2992}," java.util.Optional;\n",[2978,3521,3522],{"class":2980,"line":3049},[2978,3523,3011],{"emptyLinePlaceholder":3010},[2978,3525,3526],{"class":2980,"line":3076},[2978,3527,3528],{"class":3045},"/**\n",[2978,3530,3531],{"class":2980,"line":3081},[2978,3532,3533],{"class":3045}," * Identity Map — реєстр завантажених об'єктів, індексований за первинним ключем.\n",[2978,3535,3536],{"class":2980,"line":3087},[2978,3537,3538],{"class":3045}," * \u003Cp>\n",[2978,3540,3541],{"class":2980,"line":3092},[2978,3542,3543],{"class":3045}," * Гарантує, що для кожного значення ключа {@code ID} у пам'яті існує\n",[2978,3545,3546],{"class":2980,"line":3098},[2978,3547,3548],{"class":3045}," * не більше одного екземпляра типу {@code T}. При повторному запиті\n",[2978,3550,3551],{"class":2980,"line":3120},[2978,3552,3553],{"class":3045}," * з тим самим ключем повертає той самий об'єкт (не копію), що:\n",[2978,3555,3556],{"class":2980,"line":3125},[2978,3557,3558],{"class":3045}," * \u003Cul>\n",[2978,3560,3561],{"class":2980,"line":3131},[2978,3562,3563],{"class":3045}," *   \u003Cli>усуває зайві SELECT-запити до БД;\u003C/li>\n",[2978,3565,3566],{"class":2980,"line":3153},[2978,3567,3568],{"class":3045}," *   \u003Cli>підтримує узгодженість стану у рамках сесії;\u003C/li>\n",[2978,3570,3571],{"class":2980,"line":3183},[2978,3572,3573],{"class":3045}," *   \u003Cli>вирівнює семантику ідентичності Java та реляційної БД.\u003C/li>\n",[2978,3575,3576],{"class":2980,"line":3188},[2978,3577,3578],{"class":3045}," * \u003C/ul>\n",[2978,3580,3581],{"class":2980,"line":3194},[2978,3582,3583],{"class":3045}," *\n",[2978,3585,3586],{"class":2980,"line":3213},[2978,3587,3588],{"class":3045}," * \u003Cp>\u003Cb>Область видимості:\u003C/b> один екземпляр Identity Map повинен\n",[2978,3590,3591],{"class":2980,"line":3226},[2978,3592,3593],{"class":3045}," * існувати в межах однієї логічної одиниці роботи (запит, транзакція\n",[2978,3595,3596],{"class":2980,"line":3231},[2978,3597,3598],{"class":3045}," * або сесія). Він \u003Cem>не є\u003C/em> глобальним або thread-safe кешем.\n",[2978,3600,3601],{"class":2980,"line":3237},[2978,3602,3583],{"class":3045},[2978,3604,3606,3609,3612,3615],{"class":2980,"line":3605},23,[2978,3607,3608],{"class":3045}," * ",[2978,3610,3611],{"class":3489},"@param",[2978,3613,3614],{"class":2988}," \u003CID>",[2978,3616,3617],{"class":3045}," тип первинного ключа (наприклад, {@code UUID})\n",[2978,3619,3621,3623,3625,3628],{"class":2980,"line":3620},24,[2978,3622,3608],{"class":3045},[2978,3624,3611],{"class":3489},[2978,3626,3627],{"class":2988}," \u003CT>",[2978,3629,3630],{"class":3045},"  тип доменної сутності (наприклад, {@code Author})\n",[2978,3632,3634],{"class":2980,"line":3633},25,[2978,3635,3636],{"class":3045}," */\n",[2978,3638,3640,3643,3646,3649,3652,3655,3658,3661],{"class":2980,"line":3639},26,[2978,3641,3642],{"class":3489},"public",[2978,3644,3645],{"class":3489}," class",[2978,3647,3648],{"class":2984}," IdentityMap",[2978,3650,3651],{"class":2992},"\u003C",[2978,3653,3654],{"class":2984},"ID",[2978,3656,3657],{"class":2992},", ",[2978,3659,3660],{"class":2984},"T",[2978,3662,3663],{"class":2992},"> {\n",[2978,3665,3667],{"class":2980,"line":3666},27,[2978,3668,3011],{"emptyLinePlaceholder":3010},[2978,3670,3672],{"class":2980,"line":3671},28,[2978,3673,3674],{"class":3045},"    /**\n",[2978,3676,3678],{"class":2980,"line":3677},29,[2978,3679,3680],{"class":3045},"     * Внутрішнє сховище: первинний ключ → екземпляр сутності.\n",[2978,3682,3684],{"class":2980,"line":3683},30,[2978,3685,3686],{"class":3045},"     * \u003Cp>\n",[2978,3688,3690],{"class":2980,"line":3689},31,[2978,3691,3692],{"class":3045},"     * Використовуємо {@link HashMap} (не {@link java.util.concurrent.ConcurrentHashMap}),\n",[2978,3694,3696],{"class":2980,"line":3695},32,[2978,3697,3698],{"class":3045},"     * оскільки Identity Map призначений для однопотокового використання\n",[2978,3700,3702],{"class":2980,"line":3701},33,[2978,3703,3704],{"class":3045},"     * у рамках однієї сесії/транзакції.\n",[2978,3706,3708],{"class":2980,"line":3707},34,[2978,3709,3710],{"class":3045},"     */\n",[2978,3712,3714,3717,3720,3723,3725,3727,3729,3731,3734,3737,3739,3741,3744],{"class":2980,"line":3713},35,[2978,3715,3716],{"class":3489},"    private",[2978,3718,3719],{"class":3489}," final",[2978,3721,3722],{"class":2984}," Map",[2978,3724,3651],{"class":2992},[2978,3726,3654],{"class":2984},[2978,3728,3657],{"class":2992},[2978,3730,3660],{"class":2984},[2978,3732,3733],{"class":2992},"> ",[2978,3735,3736],{"class":2988},"store",[2978,3738,2993],{"class":2992},[2978,3740,2997],{"class":2996},[2978,3742,3743],{"class":2984}," HashMap",[2978,3745,3746],{"class":2992},"\u003C>();\n",[2978,3748,3750],{"class":2980,"line":3749},36,[2978,3751,3011],{"emptyLinePlaceholder":3010},[2978,3753,3755],{"class":2980,"line":3754},37,[2978,3756,3674],{"class":3045},[2978,3758,3760],{"class":2980,"line":3759},38,[2978,3761,3762],{"class":3045},"     * Шукає об'єкт у кеші за первинним ключем.\n",[2978,3764,3766],{"class":2980,"line":3765},39,[2978,3767,3768],{"class":3045},"     *\n",[2978,3770,3772,3775,3777,3780],{"class":2980,"line":3771},40,[2978,3773,3774],{"class":3045},"     * ",[2978,3776,3611],{"class":3489},[2978,3778,3779],{"class":2988}," id",[2978,3781,3782],{"class":3045}," первинний ключ\n",[2978,3784,3786,3788,3791],{"class":2980,"line":3785},41,[2978,3787,3774],{"class":3045},[2978,3789,3790],{"class":3489},"@return",[2978,3792,3793],{"class":3045}," {@link Optional} з об'єктом, якщо він раніше був завантажений;\n",[2978,3795,3797,3800,3803,3806,3809,3812],{"class":2980,"line":3796},42,[2978,3798,3799],{"class":3045},"     *         {",[2978,3801,3802],{"class":3489},"@link",[2978,3804,3805],{"class":2984}," Optional",[2978,3807,3808],{"class":3045},"#",[2978,3810,3811],{"class":2988},"empty()",[2978,3813,3814],{"class":3045},"} якщо cache miss\n",[2978,3816,3818],{"class":2980,"line":3817},43,[2978,3819,3710],{"class":3045},[2978,3821,3823,3826,3828,3830,3832,3834,3837,3839,3841,3843],{"class":2980,"line":3822},44,[2978,3824,3825],{"class":3489},"    public",[2978,3827,3805],{"class":2984},[2978,3829,3651],{"class":2992},[2978,3831,3660],{"class":2984},[2978,3833,3733],{"class":2992},[2978,3835,3836],{"class":3000},"get",[2978,3838,3166],{"class":2992},[2978,3840,3654],{"class":2984},[2978,3842,3779],{"class":2988},[2978,3844,3845],{"class":2992},") {\n",[2978,3847,3849,3852,3854,3856,3859,3861,3863,3865,3867],{"class":2980,"line":3848},45,[2978,3850,3851],{"class":2996},"        return",[2978,3853,3805],{"class":2988},[2978,3855,3028],{"class":2992},[2978,3857,3858],{"class":3000},"ofNullable",[2978,3860,3166],{"class":2992},[2978,3862,3736],{"class":2988},[2978,3864,3028],{"class":2992},[2978,3866,3836],{"class":3000},[2978,3868,3869],{"class":2992},"(id));\n",[2978,3871,3873],{"class":2980,"line":3872},46,[2978,3874,3875],{"class":2992},"    }\n",[2978,3877,3879],{"class":2980,"line":3878},47,[2978,3880,3011],{"emptyLinePlaceholder":3010},[2978,3882,3884],{"class":2980,"line":3883},48,[2978,3885,3674],{"class":3045},[2978,3887,3889],{"class":2980,"line":3888},49,[2978,3890,3891],{"class":3045},"     * Реєструє об'єкт у кеші після завантаження з БД.\n",[2978,3893,3895],{"class":2980,"line":3894},50,[2978,3896,3686],{"class":3045},[2978,3898,3900],{"class":2980,"line":3899},51,[2978,3901,3902],{"class":3045},"     * Якщо об'єкт з таким {@code id} вже зареєстрований — він буде замінений.\n",[2978,3904,3906],{"class":2980,"line":3905},52,[2978,3907,3908],{"class":3045},"     * Зазвичай це не має відбуватися у нормальному потоці роботи.\n",[2978,3910,3912],{"class":2980,"line":3911},53,[2978,3913,3768],{"class":3045},[2978,3915,3917,3919,3921,3923],{"class":2980,"line":3916},54,[2978,3918,3774],{"class":3045},[2978,3920,3611],{"class":3489},[2978,3922,3779],{"class":2988},[2978,3924,3925],{"class":3045},"     первинний ключ\n",[2978,3927,3929,3931,3933,3936],{"class":2980,"line":3928},55,[2978,3930,3774],{"class":3045},[2978,3932,3611],{"class":3489},[2978,3934,3935],{"class":2988}," entity",[2978,3937,3938],{"class":3045}," завантажений об'єкт\n",[2978,3940,3942],{"class":2980,"line":3941},56,[2978,3943,3710],{"class":3045},[2978,3945,3947,3949,3952,3955,3957,3959,3961,3963,3965,3967],{"class":2980,"line":3946},57,[2978,3948,3825],{"class":3489},[2978,3950,3951],{"class":2984}," void",[2978,3953,3954],{"class":3000}," put",[2978,3956,3166],{"class":2992},[2978,3958,3654],{"class":2984},[2978,3960,3779],{"class":2988},[2978,3962,3657],{"class":2992},[2978,3964,3660],{"class":2984},[2978,3966,3935],{"class":2988},[2978,3968,3845],{"class":2992},[2978,3970,3972,3975,3977,3980],{"class":2980,"line":3971},58,[2978,3973,3974],{"class":2988},"        store",[2978,3976,3028],{"class":2992},[2978,3978,3979],{"class":3000},"put",[2978,3981,3982],{"class":2992},"(id, entity);\n",[2978,3984,3986],{"class":2980,"line":3985},59,[2978,3987,3875],{"class":2992},[2978,3989,3991],{"class":2980,"line":3990},60,[2978,3992,3011],{"emptyLinePlaceholder":3010},[2978,3994,3996],{"class":2980,"line":3995},61,[2978,3997,3674],{"class":3045},[2978,3999,4001],{"class":2980,"line":4000},62,[2978,4002,4003],{"class":3045},"     * Видаляє об'єкт із кешу.\n",[2978,4005,4007],{"class":2980,"line":4006},63,[2978,4008,3686],{"class":3045},[2978,4010,4012],{"class":2980,"line":4011},64,[2978,4013,4014],{"class":3045},"     * Викликається після успішного {@code DELETE} або при явній інвалідації\n",[2978,4016,4018],{"class":2980,"line":4017},65,[2978,4019,4020],{"class":3045},"     * (наприклад, у {@link com.example.audiobook.repository.CachedJdbcRepository#deleteById}).\n",[2978,4022,4024],{"class":2980,"line":4023},66,[2978,4025,3768],{"class":3045},[2978,4027,4029,4031,4033,4035],{"class":2980,"line":4028},67,[2978,4030,3774],{"class":3045},[2978,4032,3611],{"class":3489},[2978,4034,3779],{"class":2988},[2978,4036,3782],{"class":3045},[2978,4038,4040],{"class":2980,"line":4039},68,[2978,4041,3710],{"class":3045},[2978,4043,4045,4047,4049,4052,4054,4056,4058],{"class":2980,"line":4044},69,[2978,4046,3825],{"class":3489},[2978,4048,3951],{"class":2984},[2978,4050,4051],{"class":3000}," remove",[2978,4053,3166],{"class":2992},[2978,4055,3654],{"class":2984},[2978,4057,3779],{"class":2988},[2978,4059,3845],{"class":2992},[2978,4061,4063,4065,4067,4070],{"class":2980,"line":4062},70,[2978,4064,3974],{"class":2988},[2978,4066,3028],{"class":2992},[2978,4068,4069],{"class":3000},"remove",[2978,4071,4072],{"class":2992},"(id);\n",[2978,4074,4076],{"class":2980,"line":4075},71,[2978,4077,3875],{"class":2992},[2978,4079,4081],{"class":2980,"line":4080},72,[2978,4082,3011],{"emptyLinePlaceholder":3010},[2978,4084,4086],{"class":2980,"line":4085},73,[2978,4087,3674],{"class":3045},[2978,4089,4091],{"class":2980,"line":4090},74,[2978,4092,4093],{"class":3045},"     * Перевіряє, чи об'єкт з даним ключем зареєстрований у кеші.\n",[2978,4095,4097],{"class":2980,"line":4096},75,[2978,4098,3768],{"class":3045},[2978,4100,4102,4104,4106,4108],{"class":2980,"line":4101},76,[2978,4103,3774],{"class":3045},[2978,4105,3611],{"class":3489},[2978,4107,3779],{"class":2988},[2978,4109,3782],{"class":3045},[2978,4111,4113,4115,4117],{"class":2980,"line":4112},77,[2978,4114,3774],{"class":3045},[2978,4116,3790],{"class":3489},[2978,4118,4119],{"class":3045}," {@code true} якщо cache hit\n",[2978,4121,4123],{"class":2980,"line":4122},78,[2978,4124,3710],{"class":3045},[2978,4126,4128,4130,4133,4136,4138,4140,4142],{"class":2980,"line":4127},79,[2978,4129,3825],{"class":3489},[2978,4131,4132],{"class":2984}," boolean",[2978,4134,4135],{"class":3000}," contains",[2978,4137,3166],{"class":2992},[2978,4139,3654],{"class":2984},[2978,4141,3779],{"class":2988},[2978,4143,3845],{"class":2992},[2978,4145,4147,4149,4152,4154,4157],{"class":2980,"line":4146},80,[2978,4148,3851],{"class":2996},[2978,4150,4151],{"class":2988}," store",[2978,4153,3028],{"class":2992},[2978,4155,4156],{"class":3000},"containsKey",[2978,4158,4072],{"class":2992},[2978,4160,4162],{"class":2980,"line":4161},81,[2978,4163,3875],{"class":2992},[2978,4165,4167],{"class":2980,"line":4166},82,[2978,4168,3011],{"emptyLinePlaceholder":3010},[2978,4170,4172],{"class":2980,"line":4171},83,[2978,4173,3674],{"class":3045},[2978,4175,4177],{"class":2980,"line":4176},84,[2978,4178,4179],{"class":3045},"     * Очищає весь кеш.\n",[2978,4181,4183],{"class":2980,"line":4182},85,[2978,4184,3686],{"class":3045},[2978,4186,4188],{"class":2980,"line":4187},86,[2978,4189,4190],{"class":3045},"     * Викликається в кінці сесії або при явному скиданні стану.\n",[2978,4192,4194],{"class":2980,"line":4193},87,[2978,4195,4196],{"class":3045},"     * Після виклику наступний {@code findById} знову звернеться до БД.\n",[2978,4198,4200],{"class":2980,"line":4199},88,[2978,4201,3710],{"class":3045},[2978,4203,4205,4207,4209,4212],{"class":2980,"line":4204},89,[2978,4206,3825],{"class":3489},[2978,4208,3951],{"class":2984},[2978,4210,4211],{"class":3000}," clear",[2978,4213,4214],{"class":2992},"() {\n",[2978,4216,4218,4220,4222,4225],{"class":2980,"line":4217},90,[2978,4219,3974],{"class":2988},[2978,4221,3028],{"class":2992},[2978,4223,4224],{"class":3000},"clear",[2978,4226,3034],{"class":2992},[2978,4228,4230],{"class":2980,"line":4229},91,[2978,4231,3875],{"class":2992},[2978,4233,4235],{"class":2980,"line":4234},92,[2978,4236,3011],{"emptyLinePlaceholder":3010},[2978,4238,4240],{"class":2980,"line":4239},93,[2978,4241,3674],{"class":3045},[2978,4243,4245],{"class":2980,"line":4244},94,[2978,4246,4247],{"class":3045},"     * Повертає кількість об'єктів у кеші.\n",[2978,4249,4251],{"class":2980,"line":4250},95,[2978,4252,4253],{"class":3045},"     * Корисно для діагностики та тестів.\n",[2978,4255,4257],{"class":2980,"line":4256},96,[2978,4258,3710],{"class":3045},[2978,4260,4262,4264,4267,4270],{"class":2980,"line":4261},97,[2978,4263,3825],{"class":3489},[2978,4265,4266],{"class":2984}," int",[2978,4268,4269],{"class":3000}," size",[2978,4271,4214],{"class":2992},[2978,4273,4275,4277,4279,4281,4284],{"class":2980,"line":4274},98,[2978,4276,3851],{"class":2996},[2978,4278,4151],{"class":2988},[2978,4280,3028],{"class":2992},[2978,4282,4283],{"class":3000},"size",[2978,4285,3034],{"class":2992},[2978,4287,4289],{"class":2980,"line":4288},99,[2978,4290,3875],{"class":2992},[2978,4292,4294],{"class":2980,"line":4293},100,[2978,4295,4296],{"class":2992},"}\n",[2964,4298,4299,4300,4303,4304,4307,4308,4311],{},"Клас навмисно мінімалістичний: ",[3270,4301,4302],{},"сім публічних методів",", жодного SQL, жодної залежності від конкретних доменних типів. Параметризація ",[2975,4305,4306],{},"\u003CID, T>"," дозволяє створювати окремий ",[2975,4309,4310],{},"IdentityMap"," для кожної сутності без дублювання коду.",[3315,4313],{},[2959,4315,4317],{"id":4316},"cachedjdbcrepository-інтеграція-identity-map-з-repository","CachedJdbcRepository: Інтеграція Identity Map з Repository",[2964,4319,4320,4321,4323,4324,4327,4328,4331],{},"Маючи готовий ",[2975,4322,3475],{},", наступний крок — інтегрувати його з існуючою архітектурою репозиторіїв зі статті 14. Ми могли б додати кеш прямо в ",[2975,4325,4326],{},"AbstractJdbcRepository",", але це порушило б ",[3270,4329,4330],{},"принцип єдиної відповідальності",": абстрактний репозиторій відповідає за JDBC-операції, а не за кешування.",[2964,4333,4334,4335,4338,4339,4342,4343,4346],{},"Кращий підхід — ",[3270,4336,4337],{},"Decorator Pattern",": створити проміжний клас ",[2975,4340,4341],{},"CachedJdbcRepository\u003CT, ID>",", що обгортає будь-який ",[2975,4344,4345],{},"Repository\u003CT, ID>"," і додає кешування, не змінюючи оригінального коду.",[3352,4348,4349],{},[2968,4350,4352],{"className":3356,"code":4351,"language":3352,"meta":2973,"style":2973},"classDiagram\n    direction TB\n\n    class Repository {\n        \u003C\u003Cinterface>>\n        +findById(id) Optional~T~\n        +findAll() List~T~\n        +save(entity) void\n        +update(entity) void\n        +deleteById(id) bool\n        +count() long\n        +existsById(id) bool\n    }\n\n    class AbstractJdbcRepository {\n        \u003C\u003Cabstract>>\n        #connectionManager\n        +findById(id) Optional~T~\n        +findAll() List~T~\n        +save(entity) void\n        +update(entity) void\n        +deleteById(id) bool\n    }\n\n    class JdbcAuthorRepository {\n        #mapRow(rs) Author\n        #getInsertSql() String\n        #setInsertParams(stmt, entity)\n    }\n\n    class CachedJdbcRepository {\n        -delegate: Repository~T,ID~\n        -identityMap: IdentityMap~ID,T~\n        +findById(id) Optional~T~\n        +findAll() List~T~\n        +save(entity) void\n        +update(entity) void\n        +deleteById(id) bool\n    }\n\n    Repository \u003C|.. AbstractJdbcRepository\n    AbstractJdbcRepository \u003C|-- JdbcAuthorRepository\n    Repository \u003C|.. CachedJdbcRepository\n    CachedJdbcRepository o-- Repository : delegates to\n    CachedJdbcRepository o-- IdentityMap\n",[2975,4353,4354,4359,4364,4368,4373,4378,4383,4388,4393,4398,4403,4408,4413,4417,4421,4426,4431,4436,4440,4444,4448,4452,4456,4460,4464,4469,4474,4479,4484,4488,4492,4497,4502,4507,4511,4515,4519,4523,4527,4531,4535,4540,4545,4550,4555],{"__ignoreMap":2973},[2978,4355,4356],{"class":2980,"line":2981},[2978,4357,4358],{},"classDiagram\n",[2978,4360,4361],{"class":2980,"line":3007},[2978,4362,4363],{},"    direction TB\n",[2978,4365,4366],{"class":2980,"line":3014},[2978,4367,3011],{"emptyLinePlaceholder":3010},[2978,4369,4370],{"class":2980,"line":3037},[2978,4371,4372],{},"    class Repository {\n",[2978,4374,4375],{"class":2980,"line":3042},[2978,4376,4377],{},"        \u003C\u003Cinterface>>\n",[2978,4379,4380],{"class":2980,"line":3049},[2978,4381,4382],{},"        +findById(id) Optional~T~\n",[2978,4384,4385],{"class":2980,"line":3076},[2978,4386,4387],{},"        +findAll() List~T~\n",[2978,4389,4390],{"class":2980,"line":3081},[2978,4391,4392],{},"        +save(entity) void\n",[2978,4394,4395],{"class":2980,"line":3087},[2978,4396,4397],{},"        +update(entity) void\n",[2978,4399,4400],{"class":2980,"line":3092},[2978,4401,4402],{},"        +deleteById(id) bool\n",[2978,4404,4405],{"class":2980,"line":3098},[2978,4406,4407],{},"        +count() long\n",[2978,4409,4410],{"class":2980,"line":3120},[2978,4411,4412],{},"        +existsById(id) bool\n",[2978,4414,4415],{"class":2980,"line":3125},[2978,4416,3875],{},[2978,4418,4419],{"class":2980,"line":3131},[2978,4420,3011],{"emptyLinePlaceholder":3010},[2978,4422,4423],{"class":2980,"line":3153},[2978,4424,4425],{},"    class AbstractJdbcRepository {\n",[2978,4427,4428],{"class":2980,"line":3183},[2978,4429,4430],{},"        \u003C\u003Cabstract>>\n",[2978,4432,4433],{"class":2980,"line":3188},[2978,4434,4435],{},"        #connectionManager\n",[2978,4437,4438],{"class":2980,"line":3194},[2978,4439,4382],{},[2978,4441,4442],{"class":2980,"line":3213},[2978,4443,4387],{},[2978,4445,4446],{"class":2980,"line":3226},[2978,4447,4392],{},[2978,4449,4450],{"class":2980,"line":3231},[2978,4451,4397],{},[2978,4453,4454],{"class":2980,"line":3237},[2978,4455,4402],{},[2978,4457,4458],{"class":2980,"line":3605},[2978,4459,3875],{},[2978,4461,4462],{"class":2980,"line":3620},[2978,4463,3011],{"emptyLinePlaceholder":3010},[2978,4465,4466],{"class":2980,"line":3633},[2978,4467,4468],{},"    class JdbcAuthorRepository {\n",[2978,4470,4471],{"class":2980,"line":3639},[2978,4472,4473],{},"        #mapRow(rs) Author\n",[2978,4475,4476],{"class":2980,"line":3666},[2978,4477,4478],{},"        #getInsertSql() String\n",[2978,4480,4481],{"class":2980,"line":3671},[2978,4482,4483],{},"        #setInsertParams(stmt, entity)\n",[2978,4485,4486],{"class":2980,"line":3677},[2978,4487,3875],{},[2978,4489,4490],{"class":2980,"line":3683},[2978,4491,3011],{"emptyLinePlaceholder":3010},[2978,4493,4494],{"class":2980,"line":3689},[2978,4495,4496],{},"    class CachedJdbcRepository {\n",[2978,4498,4499],{"class":2980,"line":3695},[2978,4500,4501],{},"        -delegate: Repository~T,ID~\n",[2978,4503,4504],{"class":2980,"line":3701},[2978,4505,4506],{},"        -identityMap: IdentityMap~ID,T~\n",[2978,4508,4509],{"class":2980,"line":3707},[2978,4510,4382],{},[2978,4512,4513],{"class":2980,"line":3713},[2978,4514,4387],{},[2978,4516,4517],{"class":2980,"line":3749},[2978,4518,4392],{},[2978,4520,4521],{"class":2980,"line":3754},[2978,4522,4397],{},[2978,4524,4525],{"class":2980,"line":3759},[2978,4526,4402],{},[2978,4528,4529],{"class":2980,"line":3765},[2978,4530,3875],{},[2978,4532,4533],{"class":2980,"line":3771},[2978,4534,3011],{"emptyLinePlaceholder":3010},[2978,4536,4537],{"class":2980,"line":3785},[2978,4538,4539],{},"    Repository \u003C|.. AbstractJdbcRepository\n",[2978,4541,4542],{"class":2980,"line":3796},[2978,4543,4544],{},"    AbstractJdbcRepository \u003C|-- JdbcAuthorRepository\n",[2978,4546,4547],{"class":2980,"line":3817},[2978,4548,4549],{},"    Repository \u003C|.. CachedJdbcRepository\n",[2978,4551,4552],{"class":2980,"line":3822},[2978,4553,4554],{},"    CachedJdbcRepository o-- Repository : delegates to\n",[2978,4556,4557],{"class":2980,"line":3848},[2978,4558,4559],{},"    CachedJdbcRepository o-- IdentityMap\n",[2968,4561,4563],{"className":2970,"code":4562,"language":2972,"meta":3482,"style":2973},"package com.example.audiobook.repository;\n\nimport com.example.audiobook.persistence.IdentityMap;\n\nimport java.util.List;\nimport java.util.Optional;\n\n/**\n * Декоратор для будь-якого {@link Repository}, що додає кешування\n * через {@link IdentityMap}.\n * \u003Cp>\n * Реалізує патерн Decorator (GoF): делегує всі операції wrapped-репозиторію,\n * перехоплюючи {@code findById} і {@code save/update/delete} для підтримки\n * кешу в актуальному стані.\n * \u003Cp>\n * \u003Cb>Контракт:\u003C/b>\n * \u003Cul>\n *   \u003Cli>{@code findById} — спочатку кеш, потім БД;\u003C/li>\n *   \u003Cli>{@code findAll} — завжди БД (наповнює кеш результатами);\u003C/li>\n *   \u003Cli>{@code save} — зберігає в БД і додає у кеш;\u003C/li>\n *   \u003Cli>{@code update} — оновлює в БД і інвалідує (оновлює) кеш;\u003C/li>\n *   \u003Cli>{@code deleteById} — видаляє з БД і з кешу.\u003C/li>\n * \u003C/ul>\n *\n * @param \u003CT>  тип доменної сутності\n * @param \u003CID> тип первинного ключа\n */\npublic class CachedJdbcRepository\u003CT, ID> implements Repository\u003CT, ID> {\n\n    /** Обгорнутий репозиторій: виконує реальні SQL-операції. */\n    private final Repository\u003CT, ID> delegate;\n\n    /** Кеш завантажених об'єктів у межах поточної сесії. */\n    private final IdentityMap\u003CID, T> identityMap;\n\n    /** Функція отримання ID з сутності — потрібна для put/remove у кеш. */\n    private final java.util.function.Function\u003CT, ID> idExtractor;\n\n    /**\n     * @param delegate    реальний репозиторій (наприклад, JdbcAuthorRepository)\n     * @param idExtractor функція для отримання ID з сутності (Author::getId)\n     */\n    public CachedJdbcRepository(\n            Repository\u003CT, ID> delegate,\n            java.util.function.Function\u003CT, ID> idExtractor) {\n        this.delegate = delegate;\n        this.idExtractor = idExtractor;\n        this.identityMap = new IdentityMap\u003C>();\n    }\n\n    /**\n     * Знаходить сутність за ID.\n     * \u003Cp>\n     * \u003Cb>Логіка:\u003C/b>\n     * \u003Col>\n     *   \u003Cli>Перевірити Identity Map — cache hit? Повернути об'єкт.\u003C/li>\n     *   \u003Cli>Cache miss → делегувати у wrapped repository (SQL SELECT).\u003C/li>\n     *   \u003Cli>Зареєструвати знайдений об'єкт у Identity Map.\u003C/li>\n     * \u003C/ol>\n     */\n    @Override\n    public Optional\u003CT> findById(ID id) {\n        // Крок 1: перевірка кешу\n        Optional\u003CT> cached = identityMap.get(id);\n        if (cached.isPresent()) {\n            return cached;  // cache hit — SELECT не виконується\n        }\n\n        // Крок 2: cache miss — завантажити з БД\n        Optional\u003CT> fromDb = delegate.findById(id);\n\n        // Крок 3: зареєструвати у кеші (якщо знайдено)\n        fromDb.ifPresent(entity -> identityMap.put(id, entity));\n\n        return fromDb;\n    }\n\n    /**\n     * Повертає всі сутності.\n     * \u003Cp>\n     * \u003Cb>Стратегія:\u003C/b> завжди звертається до БД (не можна знати, чи кеш\n     * є повним). Заповнює кеш усіма завантаженими об'єктами — наступні\n     * {@code findById} будуть cache hit.\n     */\n    @Override\n    public List\u003CT> findAll() {\n        // Завжди звертаємось до БД: не знаємо, чи всі записи вже у кеші\n        List\u003CT> all = delegate.findAll();\n\n        // Наповнюємо кеш: наступний findById вже не піде в БД\n        all.forEach(entity -> identityMap.put(idExtractor.apply(entity), entity));\n\n        return all;\n    }\n\n    /**\n     * Зберігає нову сутність.\n     * \u003Cp>\n     * Делегує в БД, потім реєструє сутність у кеші.\n     */\n    @Override\n    public void save(T entity) {\n        delegate.save(entity);\n        // Після успішного INSERT реєструємо у кеші\n        identityMap.put(idExtractor.apply(entity), entity);\n    }\n\n    /**\n     * Оновлює існуючу сутність.\n     * \u003Cp>\n     * Делегує в БД, потім оновлює кеш — замінює старий об'єкт новим.\n     * Це гарантує, що наступний {@code findById} поверне актуальний стан.\n     */\n    @Override\n    public void update(T entity) {\n        delegate.update(entity);\n        // Інвалідуємо і оновлюємо кеш: кладемо новий об'єкт\n        identityMap.put(idExtractor.apply(entity), entity);\n    }\n\n    /**\n     * Видаляє сутність за ID.\n     * \u003Cp>\n     * Делегує в БД, потім видаляє з кешу.\n     * Без цього кроку {@code findById} після видалення знайшов би\n     * об'єкт у кеші і повернув би його — навіть якщо рядку вже немає у БД.\n     */\n    @Override\n    public boolean deleteById(ID id) {\n        boolean deleted = delegate.deleteById(id);\n        if (deleted) {\n            identityMap.remove(id);  // обов'язкова інвалідація\n        }\n        return deleted;\n    }\n\n    @Override\n    public long count() {\n        return delegate.count();  // делегуємо без кешування\n    }\n\n    @Override\n    public boolean existsById(ID id) {\n        // Якщо є у кеші — точно існує; якщо немає — запитуємо БД\n        return identityMap.contains(id) || delegate.existsById(id);\n    }\n\n    /**\n     * Повертає Identity Map для доступу до метаданих кешу.\n     * Корисно для тестів та діагностики.\n     */\n    public IdentityMap\u003CID, T> getIdentityMap() {\n        return identityMap;\n    }\n}\n",[2975,4564,4565,4572,4576,4583,4587,4594,4600,4604,4608,4613,4618,4622,4627,4632,4637,4641,4646,4650,4655,4660,4665,4670,4675,4679,4683,4694,4705,4709,4744,4748,4753,4777,4781,4786,4809,4813,4818,4857,4861,4865,4877,4889,4893,4902,4922,4953,4965,4976,4992,4996,5000,5004,5009,5013,5018,5023,5028,5033,5038,5043,5047,5055,5077,5082,5106,5124,5135,5140,5144,5149,5172,5176,5181,5207,5211,5218,5222,5226,5230,5235,5239,5244,5249,5254,5258,5264,5282,5287,5311,5315,5320,5352,5356,5363,5367,5371,5375,5380,5384,5389,5393,5400,5418,5432,5438,5459,5464,5469,5474,5480,5485,5491,5497,5502,5509,5527,5538,5544,5563,5568,5573,5578,5584,5589,5595,5601,5607,5612,5619,5637,5657,5665,5681,5686,5694,5699,5704,5711,5724,5742,5747,5752,5759,5777,5783,5807,5812,5817,5822,5828,5834,5839,5861,5869,5874],{"__ignoreMap":2973},[2978,4566,4567,4569],{"class":2980,"line":2981},[2978,4568,3490],{"class":3489},[2978,4570,4571],{"class":2992}," com.example.audiobook.repository;\n",[2978,4573,4574],{"class":2980,"line":3007},[2978,4575,3011],{"emptyLinePlaceholder":3010},[2978,4577,4578,4580],{"class":2980,"line":3014},[2978,4579,3502],{"class":3489},[2978,4581,4582],{"class":2992}," com.example.audiobook.persistence.IdentityMap;\n",[2978,4584,4585],{"class":2980,"line":3037},[2978,4586,3011],{"emptyLinePlaceholder":3010},[2978,4588,4589,4591],{"class":2980,"line":3042},[2978,4590,3502],{"class":3489},[2978,4592,4593],{"class":2992}," java.util.List;\n",[2978,4595,4596,4598],{"class":2980,"line":3049},[2978,4597,3502],{"class":3489},[2978,4599,3519],{"class":2992},[2978,4601,4602],{"class":2980,"line":3076},[2978,4603,3011],{"emptyLinePlaceholder":3010},[2978,4605,4606],{"class":2980,"line":3081},[2978,4607,3528],{"class":3045},[2978,4609,4610],{"class":2980,"line":3087},[2978,4611,4612],{"class":3045}," * Декоратор для будь-якого {@link Repository}, що додає кешування\n",[2978,4614,4615],{"class":2980,"line":3092},[2978,4616,4617],{"class":3045}," * через {@link IdentityMap}.\n",[2978,4619,4620],{"class":2980,"line":3098},[2978,4621,3538],{"class":3045},[2978,4623,4624],{"class":2980,"line":3120},[2978,4625,4626],{"class":3045}," * Реалізує патерн Decorator (GoF): делегує всі операції wrapped-репозиторію,\n",[2978,4628,4629],{"class":2980,"line":3125},[2978,4630,4631],{"class":3045}," * перехоплюючи {@code findById} і {@code save/update/delete} для підтримки\n",[2978,4633,4634],{"class":2980,"line":3131},[2978,4635,4636],{"class":3045}," * кешу в актуальному стані.\n",[2978,4638,4639],{"class":2980,"line":3153},[2978,4640,3538],{"class":3045},[2978,4642,4643],{"class":2980,"line":3183},[2978,4644,4645],{"class":3045}," * \u003Cb>Контракт:\u003C/b>\n",[2978,4647,4648],{"class":2980,"line":3188},[2978,4649,3558],{"class":3045},[2978,4651,4652],{"class":2980,"line":3194},[2978,4653,4654],{"class":3045}," *   \u003Cli>{@code findById} — спочатку кеш, потім БД;\u003C/li>\n",[2978,4656,4657],{"class":2980,"line":3213},[2978,4658,4659],{"class":3045}," *   \u003Cli>{@code findAll} — завжди БД (наповнює кеш результатами);\u003C/li>\n",[2978,4661,4662],{"class":2980,"line":3226},[2978,4663,4664],{"class":3045}," *   \u003Cli>{@code save} — зберігає в БД і додає у кеш;\u003C/li>\n",[2978,4666,4667],{"class":2980,"line":3231},[2978,4668,4669],{"class":3045}," *   \u003Cli>{@code update} — оновлює в БД і інвалідує (оновлює) кеш;\u003C/li>\n",[2978,4671,4672],{"class":2980,"line":3237},[2978,4673,4674],{"class":3045}," *   \u003Cli>{@code deleteById} — видаляє з БД і з кешу.\u003C/li>\n",[2978,4676,4677],{"class":2980,"line":3605},[2978,4678,3578],{"class":3045},[2978,4680,4681],{"class":2980,"line":3620},[2978,4682,3583],{"class":3045},[2978,4684,4685,4687,4689,4691],{"class":2980,"line":3633},[2978,4686,3608],{"class":3045},[2978,4688,3611],{"class":3489},[2978,4690,3627],{"class":2988},[2978,4692,4693],{"class":3045},"  тип доменної сутності\n",[2978,4695,4696,4698,4700,4702],{"class":2980,"line":3639},[2978,4697,3608],{"class":3045},[2978,4699,3611],{"class":3489},[2978,4701,3614],{"class":2988},[2978,4703,4704],{"class":3045}," тип первинного ключа\n",[2978,4706,4707],{"class":2980,"line":3666},[2978,4708,3636],{"class":3045},[2978,4710,4711,4713,4715,4718,4720,4722,4724,4726,4728,4731,4734,4736,4738,4740,4742],{"class":2980,"line":3671},[2978,4712,3642],{"class":3489},[2978,4714,3645],{"class":3489},[2978,4716,4717],{"class":2984}," CachedJdbcRepository",[2978,4719,3651],{"class":2992},[2978,4721,3660],{"class":2984},[2978,4723,3657],{"class":2992},[2978,4725,3654],{"class":2984},[2978,4727,3733],{"class":2992},[2978,4729,4730],{"class":3489},"implements",[2978,4732,4733],{"class":2984}," Repository",[2978,4735,3651],{"class":2992},[2978,4737,3660],{"class":2984},[2978,4739,3657],{"class":2992},[2978,4741,3654],{"class":2984},[2978,4743,3663],{"class":2992},[2978,4745,4746],{"class":2980,"line":3677},[2978,4747,3011],{"emptyLinePlaceholder":3010},[2978,4749,4750],{"class":2980,"line":3683},[2978,4751,4752],{"class":3045},"    /** Обгорнутий репозиторій: виконує реальні SQL-операції. */\n",[2978,4754,4755,4757,4759,4761,4763,4765,4767,4769,4771,4774],{"class":2980,"line":3689},[2978,4756,3716],{"class":3489},[2978,4758,3719],{"class":3489},[2978,4760,4733],{"class":2984},[2978,4762,3651],{"class":2992},[2978,4764,3660],{"class":2984},[2978,4766,3657],{"class":2992},[2978,4768,3654],{"class":2984},[2978,4770,3733],{"class":2992},[2978,4772,4773],{"class":2988},"delegate",[2978,4775,4776],{"class":2992},";\n",[2978,4778,4779],{"class":2980,"line":3695},[2978,4780,3011],{"emptyLinePlaceholder":3010},[2978,4782,4783],{"class":2980,"line":3701},[2978,4784,4785],{"class":3045},"    /** Кеш завантажених об'єктів у межах поточної сесії. */\n",[2978,4787,4788,4790,4792,4794,4796,4798,4800,4802,4804,4807],{"class":2980,"line":3707},[2978,4789,3716],{"class":3489},[2978,4791,3719],{"class":3489},[2978,4793,3648],{"class":2984},[2978,4795,3651],{"class":2992},[2978,4797,3654],{"class":2984},[2978,4799,3657],{"class":2992},[2978,4801,3660],{"class":2984},[2978,4803,3733],{"class":2992},[2978,4805,4806],{"class":2988},"identityMap",[2978,4808,4776],{"class":2992},[2978,4810,4811],{"class":2980,"line":3713},[2978,4812,3011],{"emptyLinePlaceholder":3010},[2978,4814,4815],{"class":2980,"line":3749},[2978,4816,4817],{"class":3045},"    /** Функція отримання ID з сутності — потрібна для put/remove у кеш. */\n",[2978,4819,4820,4822,4824,4827,4829,4832,4834,4837,4839,4842,4844,4846,4848,4850,4852,4855],{"class":2980,"line":3754},[2978,4821,3716],{"class":3489},[2978,4823,3719],{"class":3489},[2978,4825,4826],{"class":2984}," java",[2978,4828,3028],{"class":2992},[2978,4830,4831],{"class":2984},"util",[2978,4833,3028],{"class":2992},[2978,4835,4836],{"class":2984},"function",[2978,4838,3028],{"class":2992},[2978,4840,4841],{"class":2984},"Function",[2978,4843,3651],{"class":2992},[2978,4845,3660],{"class":2984},[2978,4847,3657],{"class":2992},[2978,4849,3654],{"class":2984},[2978,4851,3733],{"class":2992},[2978,4853,4854],{"class":2988},"idExtractor",[2978,4856,4776],{"class":2992},[2978,4858,4859],{"class":2980,"line":3759},[2978,4860,3011],{"emptyLinePlaceholder":3010},[2978,4862,4863],{"class":2980,"line":3765},[2978,4864,3674],{"class":3045},[2978,4866,4867,4869,4871,4874],{"class":2980,"line":3771},[2978,4868,3774],{"class":3045},[2978,4870,3611],{"class":3489},[2978,4872,4873],{"class":2988}," delegate",[2978,4875,4876],{"class":3045},"    реальний репозиторій (наприклад, JdbcAuthorRepository)\n",[2978,4878,4879,4881,4883,4886],{"class":2980,"line":3785},[2978,4880,3774],{"class":3045},[2978,4882,3611],{"class":3489},[2978,4884,4885],{"class":2988}," idExtractor",[2978,4887,4888],{"class":3045}," функція для отримання ID з сутності (Author::getId)\n",[2978,4890,4891],{"class":2980,"line":3796},[2978,4892,3710],{"class":3045},[2978,4894,4895,4897,4899],{"class":2980,"line":3817},[2978,4896,3825],{"class":3489},[2978,4898,4717],{"class":3000},[2978,4900,4901],{"class":2992},"(\n",[2978,4903,4904,4907,4909,4911,4913,4915,4917,4919],{"class":2980,"line":3822},[2978,4905,4906],{"class":2984},"            Repository",[2978,4908,3651],{"class":2992},[2978,4910,3660],{"class":2984},[2978,4912,3657],{"class":2992},[2978,4914,3654],{"class":2984},[2978,4916,3733],{"class":2992},[2978,4918,4773],{"class":2988},[2978,4920,4921],{"class":2992},",\n",[2978,4923,4924,4927,4929,4931,4933,4935,4937,4939,4941,4943,4945,4947,4949,4951],{"class":2980,"line":3848},[2978,4925,4926],{"class":2984},"            java",[2978,4928,3028],{"class":2992},[2978,4930,4831],{"class":2984},[2978,4932,3028],{"class":2992},[2978,4934,4836],{"class":2984},[2978,4936,3028],{"class":2992},[2978,4938,4841],{"class":2984},[2978,4940,3651],{"class":2992},[2978,4942,3660],{"class":2984},[2978,4944,3657],{"class":2992},[2978,4946,3654],{"class":2984},[2978,4948,3733],{"class":2992},[2978,4950,4854],{"class":2988},[2978,4952,3845],{"class":2992},[2978,4954,4955,4958,4960,4962],{"class":2980,"line":3872},[2978,4956,4957],{"class":3489},"        this",[2978,4959,3028],{"class":2992},[2978,4961,4773],{"class":2988},[2978,4963,4964],{"class":2992}," = delegate;\n",[2978,4966,4967,4969,4971,4973],{"class":2980,"line":3878},[2978,4968,4957],{"class":3489},[2978,4970,3028],{"class":2992},[2978,4972,4854],{"class":2988},[2978,4974,4975],{"class":2992}," = idExtractor;\n",[2978,4977,4978,4980,4982,4984,4986,4988,4990],{"class":2980,"line":3883},[2978,4979,4957],{"class":3489},[2978,4981,3028],{"class":2992},[2978,4983,4806],{"class":2988},[2978,4985,2993],{"class":2992},[2978,4987,2997],{"class":2996},[2978,4989,3648],{"class":2984},[2978,4991,3746],{"class":2992},[2978,4993,4994],{"class":2980,"line":3888},[2978,4995,3875],{"class":2992},[2978,4997,4998],{"class":2980,"line":3894},[2978,4999,3011],{"emptyLinePlaceholder":3010},[2978,5001,5002],{"class":2980,"line":3899},[2978,5003,3674],{"class":3045},[2978,5005,5006],{"class":2980,"line":3905},[2978,5007,5008],{"class":3045},"     * Знаходить сутність за ID.\n",[2978,5010,5011],{"class":2980,"line":3911},[2978,5012,3686],{"class":3045},[2978,5014,5015],{"class":2980,"line":3916},[2978,5016,5017],{"class":3045},"     * \u003Cb>Логіка:\u003C/b>\n",[2978,5019,5020],{"class":2980,"line":3928},[2978,5021,5022],{"class":3045},"     * \u003Col>\n",[2978,5024,5025],{"class":2980,"line":3941},[2978,5026,5027],{"class":3045},"     *   \u003Cli>Перевірити Identity Map — cache hit? Повернути об'єкт.\u003C/li>\n",[2978,5029,5030],{"class":2980,"line":3946},[2978,5031,5032],{"class":3045},"     *   \u003Cli>Cache miss → делегувати у wrapped repository (SQL SELECT).\u003C/li>\n",[2978,5034,5035],{"class":2980,"line":3971},[2978,5036,5037],{"class":3045},"     *   \u003Cli>Зареєструвати знайдений об'єкт у Identity Map.\u003C/li>\n",[2978,5039,5040],{"class":2980,"line":3985},[2978,5041,5042],{"class":3045},"     * \u003C/ol>\n",[2978,5044,5045],{"class":2980,"line":3990},[2978,5046,3710],{"class":3045},[2978,5048,5049,5052],{"class":2980,"line":3995},[2978,5050,5051],{"class":2992},"    @",[2978,5053,5054],{"class":2984},"Override\n",[2978,5056,5057,5059,5061,5063,5065,5067,5069,5071,5073,5075],{"class":2980,"line":4000},[2978,5058,3825],{"class":3489},[2978,5060,3805],{"class":2984},[2978,5062,3651],{"class":2992},[2978,5064,3660],{"class":2984},[2978,5066,3733],{"class":2992},[2978,5068,3065],{"class":3000},[2978,5070,3166],{"class":2992},[2978,5072,3654],{"class":2984},[2978,5074,3779],{"class":2988},[2978,5076,3845],{"class":2992},[2978,5078,5079],{"class":2980,"line":4006},[2978,5080,5081],{"class":3045},"        // Крок 1: перевірка кешу\n",[2978,5083,5084,5087,5089,5091,5093,5096,5098,5100,5102,5104],{"class":2980,"line":4011},[2978,5085,5086],{"class":2984},"        Optional",[2978,5088,3651],{"class":2992},[2978,5090,3660],{"class":2984},[2978,5092,3733],{"class":2992},[2978,5094,5095],{"class":2988},"cached",[2978,5097,2993],{"class":2992},[2978,5099,4806],{"class":2988},[2978,5101,3028],{"class":2992},[2978,5103,3836],{"class":3000},[2978,5105,4072],{"class":2992},[2978,5107,5108,5111,5114,5116,5118,5121],{"class":2980,"line":4017},[2978,5109,5110],{"class":2996},"        if",[2978,5112,5113],{"class":2992}," (",[2978,5115,5095],{"class":2988},[2978,5117,3028],{"class":2992},[2978,5119,5120],{"class":3000},"isPresent",[2978,5122,5123],{"class":2992},"()) {\n",[2978,5125,5126,5129,5132],{"class":2980,"line":4023},[2978,5127,5128],{"class":2996},"            return",[2978,5130,5131],{"class":2992}," cached;  ",[2978,5133,5134],{"class":3045},"// cache hit — SELECT не виконується\n",[2978,5136,5137],{"class":2980,"line":4028},[2978,5138,5139],{"class":2992},"        }\n",[2978,5141,5142],{"class":2980,"line":4039},[2978,5143,3011],{"emptyLinePlaceholder":3010},[2978,5145,5146],{"class":2980,"line":4044},[2978,5147,5148],{"class":3045},"        // Крок 2: cache miss — завантажити з БД\n",[2978,5150,5151,5153,5155,5157,5159,5162,5164,5166,5168,5170],{"class":2980,"line":4062},[2978,5152,5086],{"class":2984},[2978,5154,3651],{"class":2992},[2978,5156,3660],{"class":2984},[2978,5158,3733],{"class":2992},[2978,5160,5161],{"class":2988},"fromDb",[2978,5163,2993],{"class":2992},[2978,5165,4773],{"class":2988},[2978,5167,3028],{"class":2992},[2978,5169,3065],{"class":3000},[2978,5171,4072],{"class":2992},[2978,5173,5174],{"class":2980,"line":4075},[2978,5175,3011],{"emptyLinePlaceholder":3010},[2978,5177,5178],{"class":2980,"line":4080},[2978,5179,5180],{"class":3045},"        // Крок 3: зареєструвати у кеші (якщо знайдено)\n",[2978,5182,5183,5186,5188,5191,5194,5197,5200,5202,5204],{"class":2980,"line":4085},[2978,5184,5185],{"class":2988},"        fromDb",[2978,5187,3028],{"class":2992},[2978,5189,5190],{"class":3000},"ifPresent",[2978,5192,5193],{"class":2992},"(entity ",[2978,5195,5196],{"class":3489},"->",[2978,5198,5199],{"class":2988}," identityMap",[2978,5201,3028],{"class":2992},[2978,5203,3979],{"class":3000},[2978,5205,5206],{"class":2992},"(id, entity));\n",[2978,5208,5209],{"class":2980,"line":4090},[2978,5210,3011],{"emptyLinePlaceholder":3010},[2978,5212,5213,5215],{"class":2980,"line":4096},[2978,5214,3851],{"class":2996},[2978,5216,5217],{"class":2992}," fromDb;\n",[2978,5219,5220],{"class":2980,"line":4101},[2978,5221,3875],{"class":2992},[2978,5223,5224],{"class":2980,"line":4112},[2978,5225,3011],{"emptyLinePlaceholder":3010},[2978,5227,5228],{"class":2980,"line":4122},[2978,5229,3674],{"class":3045},[2978,5231,5232],{"class":2980,"line":4127},[2978,5233,5234],{"class":3045},"     * Повертає всі сутності.\n",[2978,5236,5237],{"class":2980,"line":4146},[2978,5238,3686],{"class":3045},[2978,5240,5241],{"class":2980,"line":4161},[2978,5242,5243],{"class":3045},"     * \u003Cb>Стратегія:\u003C/b> завжди звертається до БД (не можна знати, чи кеш\n",[2978,5245,5246],{"class":2980,"line":4166},[2978,5247,5248],{"class":3045},"     * є повним). Заповнює кеш усіма завантаженими об'єктами — наступні\n",[2978,5250,5251],{"class":2980,"line":4171},[2978,5252,5253],{"class":3045},"     * {@code findById} будуть cache hit.\n",[2978,5255,5256],{"class":2980,"line":4176},[2978,5257,3710],{"class":3045},[2978,5259,5260,5262],{"class":2980,"line":4182},[2978,5261,5051],{"class":2992},[2978,5263,5054],{"class":2984},[2978,5265,5266,5268,5271,5273,5275,5277,5280],{"class":2980,"line":4187},[2978,5267,3825],{"class":3489},[2978,5269,5270],{"class":2984}," List",[2978,5272,3651],{"class":2992},[2978,5274,3660],{"class":2984},[2978,5276,3733],{"class":2992},[2978,5278,5279],{"class":3000},"findAll",[2978,5281,4214],{"class":2992},[2978,5283,5284],{"class":2980,"line":4193},[2978,5285,5286],{"class":3045},"        // Завжди звертаємось до БД: не знаємо, чи всі записи вже у кеші\n",[2978,5288,5289,5292,5294,5296,5298,5301,5303,5305,5307,5309],{"class":2980,"line":4199},[2978,5290,5291],{"class":2984},"        List",[2978,5293,3651],{"class":2992},[2978,5295,3660],{"class":2984},[2978,5297,3733],{"class":2992},[2978,5299,5300],{"class":2988},"all",[2978,5302,2993],{"class":2992},[2978,5304,4773],{"class":2988},[2978,5306,3028],{"class":2992},[2978,5308,5279],{"class":3000},[2978,5310,3034],{"class":2992},[2978,5312,5313],{"class":2980,"line":4204},[2978,5314,3011],{"emptyLinePlaceholder":3010},[2978,5316,5317],{"class":2980,"line":4217},[2978,5318,5319],{"class":3045},"        // Наповнюємо кеш: наступний findById вже не піде в БД\n",[2978,5321,5322,5325,5327,5330,5332,5334,5336,5338,5340,5342,5344,5346,5349],{"class":2980,"line":4229},[2978,5323,5324],{"class":2988},"        all",[2978,5326,3028],{"class":2992},[2978,5328,5329],{"class":3000},"forEach",[2978,5331,5193],{"class":2992},[2978,5333,5196],{"class":3489},[2978,5335,5199],{"class":2988},[2978,5337,3028],{"class":2992},[2978,5339,3979],{"class":3000},[2978,5341,3166],{"class":2992},[2978,5343,4854],{"class":2988},[2978,5345,3028],{"class":2992},[2978,5347,5348],{"class":3000},"apply",[2978,5350,5351],{"class":2992},"(entity), entity));\n",[2978,5353,5354],{"class":2980,"line":4234},[2978,5355,3011],{"emptyLinePlaceholder":3010},[2978,5357,5358,5360],{"class":2980,"line":4239},[2978,5359,3851],{"class":2996},[2978,5361,5362],{"class":2992}," all;\n",[2978,5364,5365],{"class":2980,"line":4244},[2978,5366,3875],{"class":2992},[2978,5368,5369],{"class":2980,"line":4250},[2978,5370,3011],{"emptyLinePlaceholder":3010},[2978,5372,5373],{"class":2980,"line":4256},[2978,5374,3674],{"class":3045},[2978,5376,5377],{"class":2980,"line":4261},[2978,5378,5379],{"class":3045},"     * Зберігає нову сутність.\n",[2978,5381,5382],{"class":2980,"line":4274},[2978,5383,3686],{"class":3045},[2978,5385,5386],{"class":2980,"line":4288},[2978,5387,5388],{"class":3045},"     * Делегує в БД, потім реєструє сутність у кеші.\n",[2978,5390,5391],{"class":2980,"line":4293},[2978,5392,3710],{"class":3045},[2978,5394,5396,5398],{"class":2980,"line":5395},101,[2978,5397,5051],{"class":2992},[2978,5399,5054],{"class":2984},[2978,5401,5403,5405,5407,5410,5412,5414,5416],{"class":2980,"line":5402},102,[2978,5404,3825],{"class":3489},[2978,5406,3951],{"class":2984},[2978,5408,5409],{"class":3000}," save",[2978,5411,3166],{"class":2992},[2978,5413,3660],{"class":2984},[2978,5415,3935],{"class":2988},[2978,5417,3845],{"class":2992},[2978,5419,5421,5424,5426,5429],{"class":2980,"line":5420},103,[2978,5422,5423],{"class":2988},"        delegate",[2978,5425,3028],{"class":2992},[2978,5427,5428],{"class":3000},"save",[2978,5430,5431],{"class":2992},"(entity);\n",[2978,5433,5435],{"class":2980,"line":5434},104,[2978,5436,5437],{"class":3045},"        // Після успішного INSERT реєструємо у кеші\n",[2978,5439,5441,5444,5446,5448,5450,5452,5454,5456],{"class":2980,"line":5440},105,[2978,5442,5443],{"class":2988},"        identityMap",[2978,5445,3028],{"class":2992},[2978,5447,3979],{"class":3000},[2978,5449,3166],{"class":2992},[2978,5451,4854],{"class":2988},[2978,5453,3028],{"class":2992},[2978,5455,5348],{"class":3000},[2978,5457,5458],{"class":2992},"(entity), entity);\n",[2978,5460,5462],{"class":2980,"line":5461},106,[2978,5463,3875],{"class":2992},[2978,5465,5467],{"class":2980,"line":5466},107,[2978,5468,3011],{"emptyLinePlaceholder":3010},[2978,5470,5472],{"class":2980,"line":5471},108,[2978,5473,3674],{"class":3045},[2978,5475,5477],{"class":2980,"line":5476},109,[2978,5478,5479],{"class":3045},"     * Оновлює існуючу сутність.\n",[2978,5481,5483],{"class":2980,"line":5482},110,[2978,5484,3686],{"class":3045},[2978,5486,5488],{"class":2980,"line":5487},111,[2978,5489,5490],{"class":3045},"     * Делегує в БД, потім оновлює кеш — замінює старий об'єкт новим.\n",[2978,5492,5494],{"class":2980,"line":5493},112,[2978,5495,5496],{"class":3045},"     * Це гарантує, що наступний {@code findById} поверне актуальний стан.\n",[2978,5498,5500],{"class":2980,"line":5499},113,[2978,5501,3710],{"class":3045},[2978,5503,5505,5507],{"class":2980,"line":5504},114,[2978,5506,5051],{"class":2992},[2978,5508,5054],{"class":2984},[2978,5510,5512,5514,5516,5519,5521,5523,5525],{"class":2980,"line":5511},115,[2978,5513,3825],{"class":3489},[2978,5515,3951],{"class":2984},[2978,5517,5518],{"class":3000}," update",[2978,5520,3166],{"class":2992},[2978,5522,3660],{"class":2984},[2978,5524,3935],{"class":2988},[2978,5526,3845],{"class":2992},[2978,5528,5530,5532,5534,5536],{"class":2980,"line":5529},116,[2978,5531,5423],{"class":2988},[2978,5533,3028],{"class":2992},[2978,5535,3220],{"class":3000},[2978,5537,5431],{"class":2992},[2978,5539,5541],{"class":2980,"line":5540},117,[2978,5542,5543],{"class":3045},"        // Інвалідуємо і оновлюємо кеш: кладемо новий об'єкт\n",[2978,5545,5547,5549,5551,5553,5555,5557,5559,5561],{"class":2980,"line":5546},118,[2978,5548,5443],{"class":2988},[2978,5550,3028],{"class":2992},[2978,5552,3979],{"class":3000},[2978,5554,3166],{"class":2992},[2978,5556,4854],{"class":2988},[2978,5558,3028],{"class":2992},[2978,5560,5348],{"class":3000},[2978,5562,5458],{"class":2992},[2978,5564,5566],{"class":2980,"line":5565},119,[2978,5567,3875],{"class":2992},[2978,5569,5571],{"class":2980,"line":5570},120,[2978,5572,3011],{"emptyLinePlaceholder":3010},[2978,5574,5576],{"class":2980,"line":5575},121,[2978,5577,3674],{"class":3045},[2978,5579,5581],{"class":2980,"line":5580},122,[2978,5582,5583],{"class":3045},"     * Видаляє сутність за ID.\n",[2978,5585,5587],{"class":2980,"line":5586},123,[2978,5588,3686],{"class":3045},[2978,5590,5592],{"class":2980,"line":5591},124,[2978,5593,5594],{"class":3045},"     * Делегує в БД, потім видаляє з кешу.\n",[2978,5596,5598],{"class":2980,"line":5597},125,[2978,5599,5600],{"class":3045},"     * Без цього кроку {@code findById} після видалення знайшов би\n",[2978,5602,5604],{"class":2980,"line":5603},126,[2978,5605,5606],{"class":3045},"     * об'єкт у кеші і повернув би його — навіть якщо рядку вже немає у БД.\n",[2978,5608,5610],{"class":2980,"line":5609},127,[2978,5611,3710],{"class":3045},[2978,5613,5615,5617],{"class":2980,"line":5614},128,[2978,5616,5051],{"class":2992},[2978,5618,5054],{"class":2984},[2978,5620,5622,5624,5626,5629,5631,5633,5635],{"class":2980,"line":5621},129,[2978,5623,3825],{"class":3489},[2978,5625,4132],{"class":2984},[2978,5627,5628],{"class":3000}," deleteById",[2978,5630,3166],{"class":2992},[2978,5632,3654],{"class":2984},[2978,5634,3779],{"class":2988},[2978,5636,3845],{"class":2992},[2978,5638,5640,5643,5646,5648,5650,5652,5655],{"class":2980,"line":5639},130,[2978,5641,5642],{"class":2984},"        boolean",[2978,5644,5645],{"class":2988}," deleted",[2978,5647,2993],{"class":2992},[2978,5649,4773],{"class":2988},[2978,5651,3028],{"class":2992},[2978,5653,5654],{"class":3000},"deleteById",[2978,5656,4072],{"class":2992},[2978,5658,5660,5662],{"class":2980,"line":5659},131,[2978,5661,5110],{"class":2996},[2978,5663,5664],{"class":2992}," (deleted) {\n",[2978,5666,5668,5671,5673,5675,5678],{"class":2980,"line":5667},132,[2978,5669,5670],{"class":2988},"            identityMap",[2978,5672,3028],{"class":2992},[2978,5674,4069],{"class":3000},[2978,5676,5677],{"class":2992},"(id);  ",[2978,5679,5680],{"class":3045},"// обов'язкова інвалідація\n",[2978,5682,5684],{"class":2980,"line":5683},133,[2978,5685,5139],{"class":2992},[2978,5687,5689,5691],{"class":2980,"line":5688},134,[2978,5690,3851],{"class":2996},[2978,5692,5693],{"class":2992}," deleted;\n",[2978,5695,5697],{"class":2980,"line":5696},135,[2978,5698,3875],{"class":2992},[2978,5700,5702],{"class":2980,"line":5701},136,[2978,5703,3011],{"emptyLinePlaceholder":3010},[2978,5705,5707,5709],{"class":2980,"line":5706},137,[2978,5708,5051],{"class":2992},[2978,5710,5054],{"class":2984},[2978,5712,5714,5716,5719,5722],{"class":2980,"line":5713},138,[2978,5715,3825],{"class":3489},[2978,5717,5718],{"class":2984}," long",[2978,5720,5721],{"class":3000}," count",[2978,5723,4214],{"class":2992},[2978,5725,5727,5729,5731,5733,5736,5739],{"class":2980,"line":5726},139,[2978,5728,3851],{"class":2996},[2978,5730,4873],{"class":2988},[2978,5732,3028],{"class":2992},[2978,5734,5735],{"class":3000},"count",[2978,5737,5738],{"class":2992},"();  ",[2978,5740,5741],{"class":3045},"// делегуємо без кешування\n",[2978,5743,5745],{"class":2980,"line":5744},140,[2978,5746,3875],{"class":2992},[2978,5748,5750],{"class":2980,"line":5749},141,[2978,5751,3011],{"emptyLinePlaceholder":3010},[2978,5753,5755,5757],{"class":2980,"line":5754},142,[2978,5756,5051],{"class":2992},[2978,5758,5054],{"class":2984},[2978,5760,5762,5764,5766,5769,5771,5773,5775],{"class":2980,"line":5761},143,[2978,5763,3825],{"class":3489},[2978,5765,4132],{"class":2984},[2978,5767,5768],{"class":3000}," existsById",[2978,5770,3166],{"class":2992},[2978,5772,3654],{"class":2984},[2978,5774,3779],{"class":2988},[2978,5776,3845],{"class":2992},[2978,5778,5780],{"class":2980,"line":5779},144,[2978,5781,5782],{"class":3045},"        // Якщо є у кеші — точно існує; якщо немає — запитуємо БД\n",[2978,5784,5786,5788,5790,5792,5795,5798,5800,5802,5805],{"class":2980,"line":5785},145,[2978,5787,3851],{"class":2996},[2978,5789,5199],{"class":2988},[2978,5791,3028],{"class":2992},[2978,5793,5794],{"class":3000},"contains",[2978,5796,5797],{"class":2992},"(id) || ",[2978,5799,4773],{"class":2988},[2978,5801,3028],{"class":2992},[2978,5803,5804],{"class":3000},"existsById",[2978,5806,4072],{"class":2992},[2978,5808,5810],{"class":2980,"line":5809},146,[2978,5811,3875],{"class":2992},[2978,5813,5815],{"class":2980,"line":5814},147,[2978,5816,3011],{"emptyLinePlaceholder":3010},[2978,5818,5820],{"class":2980,"line":5819},148,[2978,5821,3674],{"class":3045},[2978,5823,5825],{"class":2980,"line":5824},149,[2978,5826,5827],{"class":3045},"     * Повертає Identity Map для доступу до метаданих кешу.\n",[2978,5829,5831],{"class":2980,"line":5830},150,[2978,5832,5833],{"class":3045},"     * Корисно для тестів та діагностики.\n",[2978,5835,5837],{"class":2980,"line":5836},151,[2978,5838,3710],{"class":3045},[2978,5840,5842,5844,5846,5848,5850,5852,5854,5856,5859],{"class":2980,"line":5841},152,[2978,5843,3825],{"class":3489},[2978,5845,3648],{"class":2984},[2978,5847,3651],{"class":2992},[2978,5849,3654],{"class":2984},[2978,5851,3657],{"class":2992},[2978,5853,3660],{"class":2984},[2978,5855,3733],{"class":2992},[2978,5857,5858],{"class":3000},"getIdentityMap",[2978,5860,4214],{"class":2992},[2978,5862,5864,5866],{"class":2980,"line":5863},153,[2978,5865,3851],{"class":2996},[2978,5867,5868],{"class":2992}," identityMap;\n",[2978,5870,5872],{"class":2980,"line":5871},154,[2978,5873,3875],{"class":2992},[2978,5875,5877],{"class":2980,"line":5876},155,[2978,5878,4296],{"class":2992},[5880,5881,5883,5884,5886],"h3",{"id":5882},"анатомія-методу-findbyid-рядки-6175","Анатомія методу ",[2975,5885,3276],{}," (рядки 61–75)",[2964,5888,5889,5890,5893],{},"Метод є серцем Identity Map і демонструє класичний ",[3270,5891,5892],{},"Cache-Aside"," патерн у трьох рядках:",[5895,5896,5897,5907,5919],"ol",{},[3439,5898,5899,5902,5903,5906],{},[3270,5900,5901],{},"Рядок 63"," — ",[2975,5904,5905],{},"identityMap.get(id)",": перевірити кеш. Якщо знайдено — повернути негайно. Жодного SQL-запиту.",[3439,5908,5909,5902,5912,5915,5916,3028],{},[3270,5910,5911],{},"Рядок 68",[2975,5913,5914],{},"delegate.findById(id)",": кеш порожній — делегувати у реальний репозиторій. Виконується ",[2975,5917,5918],{},"SELECT ... WHERE id = ?",[3439,5920,5921,5902,5924,5927,5928,5930,5931,5934],{},[3270,5922,5923],{},"Рядок 71",[2975,5925,5926],{},"identityMap.put(id, entity)",": зареєструвати результат у кеші. Наступний ",[2975,5929,3065],{}," для того самого ",[2975,5932,5933],{},"id"," буде cache hit.",[5880,5936,5938,5939,5942],{"id":5937},"чому-findall-завжди-йде-в-бд-рядки-8390","Чому ",[2975,5940,5941],{},"findAll()"," завжди йде в БД (рядки 83–90)",[2964,5944,5945,5946,5948,5949,5951,5952,5955],{},"Цей вибір є свідомим архітектурним рішенням. Кеш не є «повним» — він містить лише ті об'єкти, що були раніше завантажені через ",[2975,5947,3065],{}," або ",[2975,5950,5428],{},". Якби ми повернули ",[2975,5953,5954],{},"identityMap.values()"," замість запиту до БД, ми пропустили б нові записи, додані іншими транзакціями.",[2964,5957,5958,5959,5961,5962,5965,5966,5968,5969,5971],{},"Натомість ми використовуємо ",[2975,5960,5279],{}," як ",[3270,5963,5964],{},"можливість наповнити кеш",": після його виконання всі завантажені об'єкти реєструються в ",[2975,5967,4806],{},", і наступні ",[2975,5970,3065],{}," стають cache hit.",[3315,5973],{},[2959,5975,5977],{"id":5976},"демонстрація-ефект-identity-map","Демонстрація: Ефект Identity Map",[2968,5979,5981],{"className":2970,"code":5980,"language":2972,"meta":3482,"style":2973},"package com.example.audiobook;\n\nimport com.example.audiobook.db.ConnectionManager;\nimport com.example.audiobook.domain.Author;\nimport com.example.audiobook.repository.AuthorRepository;\nimport com.example.audiobook.repository.CachedJdbcRepository;\nimport com.example.audiobook.repository.jdbc.JdbcAuthorRepository;\n\nimport java.util.UUID;\n\npublic class Main {\n\n    public static void main(String[] args) {\n\n        ConnectionManager cm = ConnectionManager.forH2(\"./data/audiobook_db\");\n\n        // Підклад: реальний JDBC-репозиторій\n        JdbcAuthorRepository jdbcRepo = new JdbcAuthorRepository(cm);\n\n        // Обгортка: той самий AuthorRepository, але з Identity Map\n        // Author::getId — функція вилучення ID для put/remove у кеш\n        AuthorRepository repo = new CachedJdbcRepository\u003C>(jdbcRepo, Author::getId);\n\n        // Зберегти автора\n        Author shevchenko = new Author(\"Тарас\", \"Шевченко\");\n        repo.save(shevchenko);\n        UUID id = shevchenko.getId();\n\n        System.out.println(\"=== Перший findById ===\");\n        Author a1 = repo.findById(id).orElseThrow();\n        // → cache miss: виконується SELECT\n        // → об'єкт кладеться у Identity Map\n\n        System.out.println(\"=== Другий findById (той самий id) ===\");\n        Author a2 = repo.findById(id).orElseThrow();\n        // → cache hit: SELECT НЕ виконується\n\n        // Перевірка семантики ідентичності\n        System.out.println(\"a1 == a2: \" + (a1 == a2));   // true — ОДИН і той самий об'єкт\n        System.out.println(\"a1 id:    \" + System.identityHashCode(a1));\n        System.out.println(\"a2 id:    \" + System.identityHashCode(a2));\n        // Обидва System.identityHashCode однакові — це буквально той самий об'єкт\n\n        System.out.println(\"=== Зміна через a1, читання через a2 ===\");\n        a1.setFirstName(\"Тарасик\");   // змінюємо через перше посилання\n        System.out.println(\"a2.getFirstName() = \" + a2.getFirstName());\n        // \"Тарасик\" — бо a1 і a2 — це той самий об'єкт у пам'яті!\n\n        System.out.println(\"=== Оновлення в БД та інвалідація кешу ===\");\n        a1.setFirstName(\"Тарас\");      // повернули правильне ім'я\n        repo.update(a1);               // UPDATE в БД + оновлення кешу\n\n        System.out.println(\"=== Видалення та перевірка кешу ===\");\n        boolean deleted = repo.deleteById(id);\n        System.out.println(\"Видалено: \" + deleted);\n\n        // Після deleteById об'єкт вилучений з кешу\n        // Наступний findById знову піде в БД — і не знайде запис\n        Author a3 = repo.findById(id).orElse(null);\n        System.out.println(\"Знайдено після видалення: \" + a3);  // null\n\n        cm.close();\n    }\n}\n",[2975,5982,5983,5990,5994,6001,6008,6015,6022,6029,6033,6040,6044,6056,6060,6085,6089,6114,6118,6123,6139,6143,6148,6153,6175,6179,6184,6210,6222,6240,6244,6264,6286,6291,6296,6300,6319,6340,6345,6349,6354,6377,6407,6435,6440,6444,6463,6483,6512,6517,6521,6540,6558,6572,6576,6595,6611,6631,6635,6640,6645,6672,6695,6699,6711,6715],{"__ignoreMap":2973},[2978,5984,5985,5987],{"class":2980,"line":2981},[2978,5986,3490],{"class":3489},[2978,5988,5989],{"class":2992}," com.example.audiobook;\n",[2978,5991,5992],{"class":2980,"line":3007},[2978,5993,3011],{"emptyLinePlaceholder":3010},[2978,5995,5996,5998],{"class":2980,"line":3014},[2978,5997,3502],{"class":3489},[2978,5999,6000],{"class":2992}," com.example.audiobook.db.ConnectionManager;\n",[2978,6002,6003,6005],{"class":2980,"line":3037},[2978,6004,3502],{"class":3489},[2978,6006,6007],{"class":2992}," com.example.audiobook.domain.Author;\n",[2978,6009,6010,6012],{"class":2980,"line":3042},[2978,6011,3502],{"class":3489},[2978,6013,6014],{"class":2992}," com.example.audiobook.repository.AuthorRepository;\n",[2978,6016,6017,6019],{"class":2980,"line":3049},[2978,6018,3502],{"class":3489},[2978,6020,6021],{"class":2992}," com.example.audiobook.repository.CachedJdbcRepository;\n",[2978,6023,6024,6026],{"class":2980,"line":3076},[2978,6025,3502],{"class":3489},[2978,6027,6028],{"class":2992}," com.example.audiobook.repository.jdbc.JdbcAuthorRepository;\n",[2978,6030,6031],{"class":2980,"line":3081},[2978,6032,3011],{"emptyLinePlaceholder":3010},[2978,6034,6035,6037],{"class":2980,"line":3087},[2978,6036,3502],{"class":3489},[2978,6038,6039],{"class":2992}," java.util.UUID;\n",[2978,6041,6042],{"class":2980,"line":3092},[2978,6043,3011],{"emptyLinePlaceholder":3010},[2978,6045,6046,6048,6050,6053],{"class":2980,"line":3098},[2978,6047,3642],{"class":3489},[2978,6049,3645],{"class":3489},[2978,6051,6052],{"class":2984}," Main",[2978,6054,6055],{"class":2992}," {\n",[2978,6057,6058],{"class":2980,"line":3120},[2978,6059,3011],{"emptyLinePlaceholder":3010},[2978,6061,6062,6064,6067,6069,6072,6074,6077,6080,6083],{"class":2980,"line":3125},[2978,6063,3825],{"class":3489},[2978,6065,6066],{"class":3489}," static",[2978,6068,3951],{"class":2984},[2978,6070,6071],{"class":3000}," main",[2978,6073,3166],{"class":2992},[2978,6075,6076],{"class":2984},"String",[2978,6078,6079],{"class":2992},"[] ",[2978,6081,6082],{"class":2988},"args",[2978,6084,3845],{"class":2992},[2978,6086,6087],{"class":2980,"line":3131},[2978,6088,3011],{"emptyLinePlaceholder":3010},[2978,6090,6091,6094,6097,6099,6102,6104,6107,6109,6112],{"class":2980,"line":3153},[2978,6092,6093],{"class":2984},"        ConnectionManager",[2978,6095,6096],{"class":2988}," cm",[2978,6098,2993],{"class":2992},[2978,6100,6101],{"class":2988},"ConnectionManager",[2978,6103,3028],{"class":2992},[2978,6105,6106],{"class":3000},"forH2",[2978,6108,3166],{"class":2992},[2978,6110,6111],{"class":3206},"\"./data/audiobook_db\"",[2978,6113,3210],{"class":2992},[2978,6115,6116],{"class":2980,"line":3183},[2978,6117,3011],{"emptyLinePlaceholder":3010},[2978,6119,6120],{"class":2980,"line":3188},[2978,6121,6122],{"class":3045},"        // Підклад: реальний JDBC-репозиторій\n",[2978,6124,6125,6128,6131,6133,6135,6137],{"class":2980,"line":3194},[2978,6126,6127],{"class":2984},"        JdbcAuthorRepository",[2978,6129,6130],{"class":2988}," jdbcRepo",[2978,6132,2993],{"class":2992},[2978,6134,2997],{"class":2996},[2978,6136,3001],{"class":3000},[2978,6138,3004],{"class":2992},[2978,6140,6141],{"class":2980,"line":3213},[2978,6142,3011],{"emptyLinePlaceholder":3010},[2978,6144,6145],{"class":2980,"line":3226},[2978,6146,6147],{"class":3045},"        // Обгортка: той самий AuthorRepository, але з Identity Map\n",[2978,6149,6150],{"class":2980,"line":3231},[2978,6151,6152],{"class":3045},"        // Author::getId — функція вилучення ID для put/remove у кеш\n",[2978,6154,6155,6158,6160,6162,6164,6166,6169,6172],{"class":2980,"line":3237},[2978,6156,6157],{"class":2984},"        AuthorRepository",[2978,6159,2989],{"class":2988},[2978,6161,2993],{"class":2992},[2978,6163,2997],{"class":2996},[2978,6165,4717],{"class":2984},[2978,6167,6168],{"class":2992},"\u003C>(jdbcRepo, Author",[2978,6170,6171],{"class":2996},"::",[2978,6173,6174],{"class":2992},"getId);\n",[2978,6176,6177],{"class":2980,"line":3605},[2978,6178,3011],{"emptyLinePlaceholder":3010},[2978,6180,6181],{"class":2980,"line":3620},[2978,6182,6183],{"class":3045},"        // Зберегти автора\n",[2978,6185,6186,6189,6192,6194,6196,6199,6201,6203,6205,6208],{"class":2980,"line":3633},[2978,6187,6188],{"class":2984},"        Author",[2978,6190,6191],{"class":2988}," shevchenko",[2978,6193,2993],{"class":2992},[2978,6195,2997],{"class":2996},[2978,6197,6198],{"class":3000}," Author",[2978,6200,3166],{"class":2992},[2978,6202,3207],{"class":3206},[2978,6204,3657],{"class":2992},[2978,6206,6207],{"class":3206},"\"Шевченко\"",[2978,6209,3210],{"class":2992},[2978,6211,6212,6215,6217,6219],{"class":2980,"line":3639},[2978,6213,6214],{"class":2988},"        repo",[2978,6216,3028],{"class":2992},[2978,6218,5428],{"class":3000},[2978,6220,6221],{"class":2992},"(shevchenko);\n",[2978,6223,6224,6227,6229,6231,6234,6236,6238],{"class":2980,"line":3666},[2978,6225,6226],{"class":2984},"        UUID",[2978,6228,3779],{"class":2988},[2978,6230,2993],{"class":2992},[2978,6232,6233],{"class":2988},"shevchenko",[2978,6235,3028],{"class":2992},[2978,6237,3031],{"class":3000},[2978,6239,3034],{"class":2992},[2978,6241,6242],{"class":2980,"line":3671},[2978,6243,3011],{"emptyLinePlaceholder":3010},[2978,6245,6246,6249,6251,6253,6255,6257,6259,6262],{"class":2980,"line":3677},[2978,6247,6248],{"class":2988},"        System",[2978,6250,3028],{"class":2992},[2978,6252,3139],{"class":2988},[2978,6254,3028],{"class":2992},[2978,6256,3144],{"class":3000},[2978,6258,3166],{"class":2992},[2978,6260,6261],{"class":3206},"\"=== Перший findById ===\"",[2978,6263,3210],{"class":2992},[2978,6265,6266,6268,6271,6273,6275,6277,6279,6282,6284],{"class":2980,"line":3683},[2978,6267,6188],{"class":2984},[2978,6269,6270],{"class":2988}," a1",[2978,6272,2993],{"class":2992},[2978,6274,3060],{"class":2988},[2978,6276,3028],{"class":2992},[2978,6278,3065],{"class":3000},[2978,6280,6281],{"class":2992},"(id).",[2978,6283,3071],{"class":3000},[2978,6285,3034],{"class":2992},[2978,6287,6288],{"class":2980,"line":3689},[2978,6289,6290],{"class":3045},"        // → cache miss: виконується SELECT\n",[2978,6292,6293],{"class":2980,"line":3695},[2978,6294,6295],{"class":3045},"        // → об'єкт кладеться у Identity Map\n",[2978,6297,6298],{"class":2980,"line":3701},[2978,6299,3011],{"emptyLinePlaceholder":3010},[2978,6301,6302,6304,6306,6308,6310,6312,6314,6317],{"class":2980,"line":3707},[2978,6303,6248],{"class":2988},[2978,6305,3028],{"class":2992},[2978,6307,3139],{"class":2988},[2978,6309,3028],{"class":2992},[2978,6311,3144],{"class":3000},[2978,6313,3166],{"class":2992},[2978,6315,6316],{"class":3206},"\"=== Другий findById (той самий id) ===\"",[2978,6318,3210],{"class":2992},[2978,6320,6321,6323,6326,6328,6330,6332,6334,6336,6338],{"class":2980,"line":3713},[2978,6322,6188],{"class":2984},[2978,6324,6325],{"class":2988}," a2",[2978,6327,2993],{"class":2992},[2978,6329,3060],{"class":2988},[2978,6331,3028],{"class":2992},[2978,6333,3065],{"class":3000},[2978,6335,6281],{"class":2992},[2978,6337,3071],{"class":3000},[2978,6339,3034],{"class":2992},[2978,6341,6342],{"class":2980,"line":3749},[2978,6343,6344],{"class":3045},"        // → cache hit: SELECT НЕ виконується\n",[2978,6346,6347],{"class":2980,"line":3754},[2978,6348,3011],{"emptyLinePlaceholder":3010},[2978,6350,6351],{"class":2980,"line":3759},[2978,6352,6353],{"class":3045},"        // Перевірка семантики ідентичності\n",[2978,6355,6356,6358,6360,6362,6364,6366,6368,6371,6374],{"class":2980,"line":3765},[2978,6357,6248],{"class":2988},[2978,6359,3028],{"class":2992},[2978,6361,3139],{"class":2988},[2978,6363,3028],{"class":2992},[2978,6365,3144],{"class":3000},[2978,6367,3166],{"class":2992},[2978,6369,6370],{"class":3206},"\"a1 == a2: \"",[2978,6372,6373],{"class":2992}," + (a1 == a2));   ",[2978,6375,6376],{"class":3045},"// true — ОДИН і той самий об'єкт\n",[2978,6378,6379,6381,6383,6385,6387,6389,6391,6394,6397,6399,6401,6404],{"class":2980,"line":3771},[2978,6380,6248],{"class":2988},[2978,6382,3028],{"class":2992},[2978,6384,3139],{"class":2988},[2978,6386,3028],{"class":2992},[2978,6388,3144],{"class":3000},[2978,6390,3166],{"class":2992},[2978,6392,6393],{"class":3206},"\"a1 id:    \"",[2978,6395,6396],{"class":2992}," + ",[2978,6398,3134],{"class":2988},[2978,6400,3028],{"class":2992},[2978,6402,6403],{"class":3000},"identityHashCode",[2978,6405,6406],{"class":2992},"(a1));\n",[2978,6408,6409,6411,6413,6415,6417,6419,6421,6424,6426,6428,6430,6432],{"class":2980,"line":3785},[2978,6410,6248],{"class":2988},[2978,6412,3028],{"class":2992},[2978,6414,3139],{"class":2988},[2978,6416,3028],{"class":2992},[2978,6418,3144],{"class":3000},[2978,6420,3166],{"class":2992},[2978,6422,6423],{"class":3206},"\"a2 id:    \"",[2978,6425,6396],{"class":2992},[2978,6427,3134],{"class":2988},[2978,6429,3028],{"class":2992},[2978,6431,6403],{"class":3000},[2978,6433,6434],{"class":2992},"(a2));\n",[2978,6436,6437],{"class":2980,"line":3796},[2978,6438,6439],{"class":3045},"        // Обидва System.identityHashCode однакові — це буквально той самий об'єкт\n",[2978,6441,6442],{"class":2980,"line":3817},[2978,6443,3011],{"emptyLinePlaceholder":3010},[2978,6445,6446,6448,6450,6452,6454,6456,6458,6461],{"class":2980,"line":3822},[2978,6447,6248],{"class":2988},[2978,6449,3028],{"class":2992},[2978,6451,3139],{"class":2988},[2978,6453,3028],{"class":2992},[2978,6455,3144],{"class":3000},[2978,6457,3166],{"class":2992},[2978,6459,6460],{"class":3206},"\"=== Зміна через a1, читання через a2 ===\"",[2978,6462,3210],{"class":2992},[2978,6464,6465,6468,6470,6472,6474,6477,6480],{"class":2980,"line":3848},[2978,6466,6467],{"class":2988},"        a1",[2978,6469,3028],{"class":2992},[2978,6471,3201],{"class":3000},[2978,6473,3166],{"class":2992},[2978,6475,6476],{"class":3206},"\"Тарасик\"",[2978,6478,6479],{"class":2992},");   ",[2978,6481,6482],{"class":3045},"// змінюємо через перше посилання\n",[2978,6484,6485,6487,6489,6491,6493,6495,6497,6500,6502,6505,6507,6509],{"class":2980,"line":3872},[2978,6486,6248],{"class":2988},[2978,6488,3028],{"class":2992},[2978,6490,3139],{"class":2988},[2978,6492,3028],{"class":2992},[2978,6494,3144],{"class":3000},[2978,6496,3166],{"class":2992},[2978,6498,6499],{"class":3206},"\"a2.getFirstName() = \"",[2978,6501,6396],{"class":2992},[2978,6503,6504],{"class":2988},"a2",[2978,6506,3028],{"class":2992},[2978,6508,3257],{"class":3000},[2978,6510,6511],{"class":2992},"());\n",[2978,6513,6514],{"class":2980,"line":3878},[2978,6515,6516],{"class":3045},"        // \"Тарасик\" — бо a1 і a2 — це той самий об'єкт у пам'яті!\n",[2978,6518,6519],{"class":2980,"line":3883},[2978,6520,3011],{"emptyLinePlaceholder":3010},[2978,6522,6523,6525,6527,6529,6531,6533,6535,6538],{"class":2980,"line":3888},[2978,6524,6248],{"class":2988},[2978,6526,3028],{"class":2992},[2978,6528,3139],{"class":2988},[2978,6530,3028],{"class":2992},[2978,6532,3144],{"class":3000},[2978,6534,3166],{"class":2992},[2978,6536,6537],{"class":3206},"\"=== Оновлення в БД та інвалідація кешу ===\"",[2978,6539,3210],{"class":2992},[2978,6541,6542,6544,6546,6548,6550,6552,6555],{"class":2980,"line":3894},[2978,6543,6467],{"class":2988},[2978,6545,3028],{"class":2992},[2978,6547,3201],{"class":3000},[2978,6549,3166],{"class":2992},[2978,6551,3207],{"class":3206},[2978,6553,6554],{"class":2992},");      ",[2978,6556,6557],{"class":3045},"// повернули правильне ім'я\n",[2978,6559,6560,6562,6564,6566,6569],{"class":2980,"line":3899},[2978,6561,6214],{"class":2988},[2978,6563,3028],{"class":2992},[2978,6565,3220],{"class":3000},[2978,6567,6568],{"class":2992},"(a1);               ",[2978,6570,6571],{"class":3045},"// UPDATE в БД + оновлення кешу\n",[2978,6573,6574],{"class":2980,"line":3905},[2978,6575,3011],{"emptyLinePlaceholder":3010},[2978,6577,6578,6580,6582,6584,6586,6588,6590,6593],{"class":2980,"line":3911},[2978,6579,6248],{"class":2988},[2978,6581,3028],{"class":2992},[2978,6583,3139],{"class":2988},[2978,6585,3028],{"class":2992},[2978,6587,3144],{"class":3000},[2978,6589,3166],{"class":2992},[2978,6591,6592],{"class":3206},"\"=== Видалення та перевірка кешу ===\"",[2978,6594,3210],{"class":2992},[2978,6596,6597,6599,6601,6603,6605,6607,6609],{"class":2980,"line":3916},[2978,6598,5642],{"class":2984},[2978,6600,5645],{"class":2988},[2978,6602,2993],{"class":2992},[2978,6604,3060],{"class":2988},[2978,6606,3028],{"class":2992},[2978,6608,5654],{"class":3000},[2978,6610,4072],{"class":2992},[2978,6612,6613,6615,6617,6619,6621,6623,6625,6628],{"class":2980,"line":3928},[2978,6614,6248],{"class":2988},[2978,6616,3028],{"class":2992},[2978,6618,3139],{"class":2988},[2978,6620,3028],{"class":2992},[2978,6622,3144],{"class":3000},[2978,6624,3166],{"class":2992},[2978,6626,6627],{"class":3206},"\"Видалено: \"",[2978,6629,6630],{"class":2992}," + deleted);\n",[2978,6632,6633],{"class":2980,"line":3941},[2978,6634,3011],{"emptyLinePlaceholder":3010},[2978,6636,6637],{"class":2980,"line":3946},[2978,6638,6639],{"class":3045},"        // Після deleteById об'єкт вилучений з кешу\n",[2978,6641,6642],{"class":2980,"line":3971},[2978,6643,6644],{"class":3045},"        // Наступний findById знову піде в БД — і не знайде запис\n",[2978,6646,6647,6649,6652,6654,6656,6658,6660,6662,6665,6667,6670],{"class":2980,"line":3985},[2978,6648,6188],{"class":2984},[2978,6650,6651],{"class":2988}," a3",[2978,6653,2993],{"class":2992},[2978,6655,3060],{"class":2988},[2978,6657,3028],{"class":2992},[2978,6659,3065],{"class":3000},[2978,6661,6281],{"class":2992},[2978,6663,6664],{"class":3000},"orElse",[2978,6666,3166],{"class":2992},[2978,6668,6669],{"class":3489},"null",[2978,6671,3210],{"class":2992},[2978,6673,6674,6676,6678,6680,6682,6684,6686,6689,6692],{"class":2980,"line":3990},[2978,6675,6248],{"class":2988},[2978,6677,3028],{"class":2992},[2978,6679,3139],{"class":2988},[2978,6681,3028],{"class":2992},[2978,6683,3144],{"class":3000},[2978,6685,3166],{"class":2992},[2978,6687,6688],{"class":3206},"\"Знайдено після видалення: \"",[2978,6690,6691],{"class":2992}," + a3);  ",[2978,6693,6694],{"class":3045},"// null\n",[2978,6696,6697],{"class":2980,"line":3995},[2978,6698,3011],{"emptyLinePlaceholder":3010},[2978,6700,6701,6704,6706,6709],{"class":2980,"line":4000},[2978,6702,6703],{"class":2988},"        cm",[2978,6705,3028],{"class":2992},[2978,6707,6708],{"class":3000},"close",[2978,6710,3034],{"class":2992},[2978,6712,6713],{"class":2980,"line":4006},[2978,6714,3875],{"class":2992},[2978,6716,6717],{"class":2980,"line":4011},[2978,6718,4296],{"class":2992},[2964,6720,6721,6722,6725,6726,6729,6730,6732,6733,6735,6736,6738,6739,5113,6742,6744,6745,6748],{},"Ключовий момент у рядках 38–42: ",[2975,6723,6724],{},"a1 == a2"," повертає ",[2975,6727,6728],{},"true",". Це означає, що Java-оператор ",[2975,6731,3465],{}," (порівняння посилань, а не значень) дає ",[2975,6734,6728],{}," для двох об'єктів, отриманих двома окремими викликами ",[2975,6737,3065],{},". Identity Map зрівняв семантику ",[3270,6740,6741],{},"Java-ідентичності",[2975,6743,3465],{},") та ",[3270,6746,6747],{},"реляційної ідентичності"," (первинний ключ).",[6750,6751,6754,6767,6777,6780,6787,6796,6805,6808,6815,6824,6827,6834,6842,6849,6852,6859,6867,6870,6877,6884,6888,6895,6903],"terminal-preview",{":cursor":6752,"title":6753},"false","java Main",[6755,6756,6758,6763,6764],"div",{"className":6757},[2980],[2978,6759,6762],{"className":6760},[6761],"opacity-40","$"," ",[3270,6765,6766],{},"java -cp . com.example.audiobook.Main",[6755,6768,6770,6776],{"className":6769},[2980],[2978,6771,6775],{"className":6772},[6773,6774],"text-blue-400","font-bold","[Pool]"," Ініціалізовано: 2 з'єднань готові",[6755,6778],{"className":6779},[2980],[6755,6781,6783],{"className":6782},[2980],[2978,6784,6786],{"className":6785},[6774],"=== Перший findById ===",[6755,6788,6790,6795],{"className":6789},[2980],[2978,6791,6794],{"className":6792},[6793],"text-yellow-400","[SQL]"," SELECT id, first_name, last_name, bio, image_path FROM authors WHERE id = ?",[6755,6797,6799,6804],{"className":6798},[2980],[2978,6800,6803],{"className":6801},[6802],"text-green-400","✓"," Завантажено з БД, кешовано",[6755,6806],{"className":6807},[2980],[6755,6809,6811],{"className":6810},[2980],[2978,6812,6814],{"className":6813},[6774],"=== Другий findById (той самий id) ===",[6755,6816,6818,6763,6821],{"className":6817},[2980],[2978,6819,6803],{"className":6820},[6802],[3327,6822,6823],{},"Cache hit — SQL не виконується",[6755,6825],{"className":6826},[2980],[6755,6828,6830,6831],{"className":6829},[2980],"a1 == a2: ",[2978,6832,6728],{"className":6833},[6802,6774],[6755,6835,6837,6838],{"className":6836},[2980],"a1 id:    ",[2978,6839,6841],{"className":6840},[6773],"1923847562",[6755,6843,6845,6846],{"className":6844},[2980],"a2 id:    ",[2978,6847,6841],{"className":6848},[6773],[6755,6850],{"className":6851},[2980],[6755,6853,6855],{"className":6854},[2980],[2978,6856,6858],{"className":6857},[6774],"=== Зміна через a1, читання через a2 ===",[6755,6860,6862,6863],{"className":6861},[2980],"a2.getFirstName() = ",[2978,6864,6866],{"className":6865},[6802],"Тарасик",[6755,6868],{"className":6869},[2980],[6755,6871,6873],{"className":6872},[2980],[2978,6874,6876],{"className":6875},[6774],"=== Видалення та перевірка кешу ===",[6755,6878,6880,6883],{"className":6879},[2980],[2978,6881,6794],{"className":6882},[6793]," DELETE FROM authors WHERE id = ?",[6755,6885,6887],{"className":6886},[2980],"Видалено: true",[6755,6889,6891,6894],{"className":6890},[2980],[2978,6892,6794],{"className":6893},[6793]," SELECT id, first_name, last_name FROM authors WHERE id = ?",[6755,6896,6898,6899],{"className":6897},[2980],"Знайдено після видалення: ",[2978,6900,6669],{"className":6901},[6902],"text-red-400",[6755,6904,6906,6909],{"className":6905},[2980],[2978,6907,6775],{"className":6908},[6773,6774]," Закрито. Закрито 2 з'єднань",[2959,6911,6913],{"id":6912},"область-видимості-identity-map","Область видимості Identity Map",[2964,6915,6916,6917,6920],{},"Одне з найважливіших архітектурних рішень при впровадженні Identity Map — ",[3270,6918,6919],{},"визначити його область видимості",": скільки часу і для якого контексту він існує. Фаулер виділяє три основних рівні.",[3352,6922,6923],{},[2968,6924,6926],{"className":3356,"code":6925,"language":3352,"meta":2973,"style":2973},"graph LR\n    subgraph REQ[\"Per-Request (HTTP Request)\"]\n        direction TB\n        R1[\"IM створюється\u003Cbr/>на початку запиту\"]\n        R2[\"Використовується\u003Cbr/>у handler/service\"]\n        R3[\"Знищується\u003Cbr/>після відповіді\"]\n        R1 --> R2 --> R3\n    end\n\n    subgraph TX[\"Per-Transaction\"]\n        direction TB\n        T1[\"IM створюється\u003Cbr/>perед BEGIN\"]\n        T2[\"Дані узгоджені\u003Cbr/>у межах транзакції\"]\n        T3[\"Знищується\u003Cbr/>після COMMIT/ROLLBACK\"]\n        T1 --> T2 --> T3\n    end\n\n    subgraph SS[\"Per-Session (довгоживучий)\"]\n        direction TB\n        S1[\"IM існує весь\u003Cbr/>час сесії\"]\n        S2[\"Потрібна\u003Cbr/>активна інвалідація\"]\n        S3[\"Ризик stale data\"]\n        S1 --> S2 --> S3\n    end\n\n    style REQ fill:#1e3a5f,stroke:#3b82f6,color:#ffffff\n    style TX fill:#1e3a2f,stroke:#22c55e,color:#ffffff\n    style SS fill:#3a1e1e,stroke:#ef4444,color:#ffffff\n",[2975,6927,6928,6933,6938,6943,6948,6953,6958,6963,6968,6972,6977,6981,6986,6991,6996,7001,7005,7009,7014,7018,7023,7028,7033,7038,7042,7046,7051,7056],{"__ignoreMap":2973},[2978,6929,6930],{"class":2980,"line":2981},[2978,6931,6932],{},"graph LR\n",[2978,6934,6935],{"class":2980,"line":3007},[2978,6936,6937],{},"    subgraph REQ[\"Per-Request (HTTP Request)\"]\n",[2978,6939,6940],{"class":2980,"line":3014},[2978,6941,6942],{},"        direction TB\n",[2978,6944,6945],{"class":2980,"line":3037},[2978,6946,6947],{},"        R1[\"IM створюється\u003Cbr/>на початку запиту\"]\n",[2978,6949,6950],{"class":2980,"line":3042},[2978,6951,6952],{},"        R2[\"Використовується\u003Cbr/>у handler/service\"]\n",[2978,6954,6955],{"class":2980,"line":3049},[2978,6956,6957],{},"        R3[\"Знищується\u003Cbr/>після відповіді\"]\n",[2978,6959,6960],{"class":2980,"line":3076},[2978,6961,6962],{},"        R1 --> R2 --> R3\n",[2978,6964,6965],{"class":2980,"line":3081},[2978,6966,6967],{},"    end\n",[2978,6969,6970],{"class":2980,"line":3087},[2978,6971,3011],{"emptyLinePlaceholder":3010},[2978,6973,6974],{"class":2980,"line":3092},[2978,6975,6976],{},"    subgraph TX[\"Per-Transaction\"]\n",[2978,6978,6979],{"class":2980,"line":3098},[2978,6980,6942],{},[2978,6982,6983],{"class":2980,"line":3120},[2978,6984,6985],{},"        T1[\"IM створюється\u003Cbr/>perед BEGIN\"]\n",[2978,6987,6988],{"class":2980,"line":3125},[2978,6989,6990],{},"        T2[\"Дані узгоджені\u003Cbr/>у межах транзакції\"]\n",[2978,6992,6993],{"class":2980,"line":3131},[2978,6994,6995],{},"        T3[\"Знищується\u003Cbr/>після COMMIT/ROLLBACK\"]\n",[2978,6997,6998],{"class":2980,"line":3153},[2978,6999,7000],{},"        T1 --> T2 --> T3\n",[2978,7002,7003],{"class":2980,"line":3183},[2978,7004,6967],{},[2978,7006,7007],{"class":2980,"line":3188},[2978,7008,3011],{"emptyLinePlaceholder":3010},[2978,7010,7011],{"class":2980,"line":3194},[2978,7012,7013],{},"    subgraph SS[\"Per-Session (довгоживучий)\"]\n",[2978,7015,7016],{"class":2980,"line":3213},[2978,7017,6942],{},[2978,7019,7020],{"class":2980,"line":3226},[2978,7021,7022],{},"        S1[\"IM існує весь\u003Cbr/>час сесії\"]\n",[2978,7024,7025],{"class":2980,"line":3231},[2978,7026,7027],{},"        S2[\"Потрібна\u003Cbr/>активна інвалідація\"]\n",[2978,7029,7030],{"class":2980,"line":3237},[2978,7031,7032],{},"        S3[\"Ризик stale data\"]\n",[2978,7034,7035],{"class":2980,"line":3605},[2978,7036,7037],{},"        S1 --> S2 --> S3\n",[2978,7039,7040],{"class":2980,"line":3620},[2978,7041,6967],{},[2978,7043,7044],{"class":2980,"line":3633},[2978,7045,3011],{"emptyLinePlaceholder":3010},[2978,7047,7048],{"class":2980,"line":3639},[2978,7049,7050],{},"    style REQ fill:#1e3a5f,stroke:#3b82f6,color:#ffffff\n",[2978,7052,7053],{"class":2980,"line":3666},[2978,7054,7055],{},"    style TX fill:#1e3a2f,stroke:#22c55e,color:#ffffff\n",[2978,7057,7058],{"class":2980,"line":3671},[2978,7059,7060],{},"    style SS fill:#3a1e1e,stroke:#ef4444,color:#ffffff\n",[5880,7062,7064],{"id":7063},"per-request-один-кеш-на-один-http-запит","Per-Request: Один кеш на один HTTP-запит",[2964,7066,7067],{},"Найбезпечніший і найпоширеніший підхід у веб-застосунках. Identity Map живе рівно стільки, скільки виконується обробка одного запиту: створюється на початку та знищується разом із відповіддю.",[2968,7069,7071],{"className":2970,"code":7070,"language":2972,"meta":2973,"style":2973},"// Псевдокод HTTP-обробника (Spring-стиль без Spring)\npublic Response handleGetAudiobook(UUID audiobookId) {\n    // Новий CachedJdbcRepository = новий IdentityMap для цього запиту\n    AuthorRepository authorRepo =\n        new CachedJdbcRepository\u003C>(new JdbcAuthorRepository(cm), Author::getId);\n\n    // Навіть якщо логіка тричі завантажує автора — SELECT виконається один раз\n    Audiobook book = buildAudiobookResponse(audiobookId, authorRepo);\n    return Response.ok(book);\n    // CachedJdbcRepository виходить зі scope → Identity Map знищується\n}\n",[2975,7072,7073,7078,7095,7100,7111,7132,7136,7141,7157,7172,7177],{"__ignoreMap":2973},[2978,7074,7075],{"class":2980,"line":2981},[2978,7076,7077],{"class":3045},"// Псевдокод HTTP-обробника (Spring-стиль без Spring)\n",[2978,7079,7080,7082,7085,7088,7090,7092],{"class":2980,"line":3007},[2978,7081,3642],{"class":3489},[2978,7083,7084],{"class":2984}," Response",[2978,7086,7087],{"class":3000}," handleGetAudiobook",[2978,7089,3166],{"class":2992},[2978,7091,3017],{"class":2984},[2978,7093,7094],{"class":2992}," audiobookId) {\n",[2978,7096,7097],{"class":2980,"line":3014},[2978,7098,7099],{"class":3045},"    // Новий CachedJdbcRepository = новий IdentityMap для цього запиту\n",[2978,7101,7102,7105,7108],{"class":2980,"line":3037},[2978,7103,7104],{"class":2984},"    AuthorRepository",[2978,7106,7107],{"class":2988}," authorRepo",[2978,7109,7110],{"class":2992}," =\n",[2978,7112,7113,7116,7118,7121,7123,7125,7128,7130],{"class":2980,"line":3042},[2978,7114,7115],{"class":2996},"        new",[2978,7117,4717],{"class":2984},[2978,7119,7120],{"class":2992},"\u003C>(",[2978,7122,2997],{"class":2996},[2978,7124,3001],{"class":3000},[2978,7126,7127],{"class":2992},"(cm), Author",[2978,7129,6171],{"class":2996},[2978,7131,6174],{"class":2992},[2978,7133,7134],{"class":2980,"line":3049},[2978,7135,3011],{"emptyLinePlaceholder":3010},[2978,7137,7138],{"class":2980,"line":3076},[2978,7139,7140],{"class":3045},"    // Навіть якщо логіка тричі завантажує автора — SELECT виконається один раз\n",[2978,7142,7143,7146,7149,7151,7154],{"class":2980,"line":3081},[2978,7144,7145],{"class":2984},"    Audiobook",[2978,7147,7148],{"class":2988}," book",[2978,7150,2993],{"class":2992},[2978,7152,7153],{"class":3000},"buildAudiobookResponse",[2978,7155,7156],{"class":2992},"(audiobookId, authorRepo);\n",[2978,7158,7159,7162,7164,7166,7169],{"class":2980,"line":3087},[2978,7160,7161],{"class":2996},"    return",[2978,7163,7084],{"class":2988},[2978,7165,3028],{"class":2992},[2978,7167,7168],{"class":3000},"ok",[2978,7170,7171],{"class":2992},"(book);\n",[2978,7173,7174],{"class":2980,"line":3092},[2978,7175,7176],{"class":3045},"    // CachedJdbcRepository виходить зі scope → Identity Map знищується\n",[2978,7178,7179],{"class":2980,"line":3098},[2978,7180,4296],{"class":2992},[2964,7182,7183,7186,7187,7190,7191,7193],{},[3270,7184,7185],{},"Переваги:"," Жодних проблем зі stale data між запитами. Жодних проблем із конкурентністю — кожен запит ізольований. ",[3270,7188,7189],{},"Недоліки:"," Кеш не переживає між запитами — якщо той самий автор потрібен у двох різних HTTP-запитах, ",[2975,7192,3280],{}," виконається двічі.",[5880,7195,7197],{"id":7196},"per-transaction-один-кеш-на-одну-jdbc-транзакцію","Per-Transaction: Один кеш на одну JDBC-транзакцію",[2964,7199,7200],{},"Identity Map є частиною транзакційного контексту. Це природна межа для JDBC-систем: усередині транзакції дані повинні бути узгодженими, тому кеш гарантовано актуальний.",[2968,7202,7204],{"className":2970,"code":7203,"language":2972,"meta":2973,"style":2973},"// Усі операції в межах однієї транзакції використовують один IM\ntry (Connection conn = cm.getConnection()) {\n    conn.setAutoCommit(false);\n\n    CachedJdbcRepository\u003CAuthor, UUID> authorRepo =\n        new CachedJdbcRepository\u003C>(new JdbcAuthorRepository(cm), Author::getId);\n\n    Author author = authorRepo.findById(id1).orElseThrow(); // SELECT\n    Author same   = authorRepo.findById(id1).orElseThrow(); // cache hit!\n\n    author.setBio(\"Оновлена біографія\");\n    authorRepo.update(author);\n\n    conn.commit();\n    // IdentityMap виходить зі scope разом із транзакцією\n}\n",[2975,7205,7206,7211,7236,7252,7256,7276,7294,7298,7325,7350,7354,7371,7383,7387,7398,7403],{"__ignoreMap":2973},[2978,7207,7208],{"class":2980,"line":2981},[2978,7209,7210],{"class":3045},"// Усі операції в межах однієї транзакції використовують один IM\n",[2978,7212,7213,7216,7218,7221,7224,7226,7229,7231,7234],{"class":2980,"line":3007},[2978,7214,7215],{"class":2996},"try",[2978,7217,5113],{"class":2992},[2978,7219,7220],{"class":2984},"Connection",[2978,7222,7223],{"class":2988}," conn",[2978,7225,2993],{"class":2992},[2978,7227,7228],{"class":2988},"cm",[2978,7230,3028],{"class":2992},[2978,7232,7233],{"class":3000},"getConnection",[2978,7235,5123],{"class":2992},[2978,7237,7238,7241,7243,7246,7248,7250],{"class":2980,"line":3014},[2978,7239,7240],{"class":2988},"    conn",[2978,7242,3028],{"class":2992},[2978,7244,7245],{"class":3000},"setAutoCommit",[2978,7247,3166],{"class":2992},[2978,7249,6752],{"class":3489},[2978,7251,3210],{"class":2992},[2978,7253,7254],{"class":2980,"line":3037},[2978,7255,3011],{"emptyLinePlaceholder":3010},[2978,7257,7258,7261,7263,7265,7267,7269,7271,7274],{"class":2980,"line":3042},[2978,7259,7260],{"class":2984},"    CachedJdbcRepository",[2978,7262,3651],{"class":2992},[2978,7264,3052],{"class":2984},[2978,7266,3657],{"class":2992},[2978,7268,3017],{"class":2984},[2978,7270,3733],{"class":2992},[2978,7272,7273],{"class":2988},"authorRepo",[2978,7275,7110],{"class":2992},[2978,7277,7278,7280,7282,7284,7286,7288,7290,7292],{"class":2980,"line":3049},[2978,7279,7115],{"class":2996},[2978,7281,4717],{"class":2984},[2978,7283,7120],{"class":2992},[2978,7285,2997],{"class":2996},[2978,7287,3001],{"class":3000},[2978,7289,7127],{"class":2992},[2978,7291,6171],{"class":2996},[2978,7293,6174],{"class":2992},[2978,7295,7296],{"class":2980,"line":3076},[2978,7297,3011],{"emptyLinePlaceholder":3010},[2978,7299,7300,7303,7306,7308,7310,7312,7314,7317,7319,7322],{"class":2980,"line":3081},[2978,7301,7302],{"class":2984},"    Author",[2978,7304,7305],{"class":2988}," author",[2978,7307,2993],{"class":2992},[2978,7309,7273],{"class":2988},[2978,7311,3028],{"class":2992},[2978,7313,3065],{"class":3000},[2978,7315,7316],{"class":2992},"(id1).",[2978,7318,3071],{"class":3000},[2978,7320,7321],{"class":2992},"(); ",[2978,7323,7324],{"class":3045},"// SELECT\n",[2978,7326,7327,7329,7332,7335,7337,7339,7341,7343,7345,7347],{"class":2980,"line":3087},[2978,7328,7302],{"class":2984},[2978,7330,7331],{"class":2988}," same",[2978,7333,7334],{"class":2992},"   = ",[2978,7336,7273],{"class":2988},[2978,7338,3028],{"class":2992},[2978,7340,3065],{"class":3000},[2978,7342,7316],{"class":2992},[2978,7344,3071],{"class":3000},[2978,7346,7321],{"class":2992},[2978,7348,7349],{"class":3045},"// cache hit!\n",[2978,7351,7352],{"class":2980,"line":3092},[2978,7353,3011],{"emptyLinePlaceholder":3010},[2978,7355,7356,7359,7361,7364,7366,7369],{"class":2980,"line":3098},[2978,7357,7358],{"class":2988},"    author",[2978,7360,3028],{"class":2992},[2978,7362,7363],{"class":3000},"setBio",[2978,7365,3166],{"class":2992},[2978,7367,7368],{"class":3206},"\"Оновлена біографія\"",[2978,7370,3210],{"class":2992},[2978,7372,7373,7376,7378,7380],{"class":2980,"line":3120},[2978,7374,7375],{"class":2988},"    authorRepo",[2978,7377,3028],{"class":2992},[2978,7379,3220],{"class":3000},[2978,7381,7382],{"class":2992},"(author);\n",[2978,7384,7385],{"class":2980,"line":3125},[2978,7386,3011],{"emptyLinePlaceholder":3010},[2978,7388,7389,7391,7393,7396],{"class":2980,"line":3131},[2978,7390,7240],{"class":2988},[2978,7392,3028],{"class":2992},[2978,7394,7395],{"class":3000},"commit",[2978,7397,3034],{"class":2992},[2978,7399,7400],{"class":2980,"line":3153},[2978,7401,7402],{"class":3045},"    // IdentityMap виходить зі scope разом із транзакцією\n",[2978,7404,7405],{"class":2980,"line":3183},[2978,7406,4296],{"class":2992},[5880,7408,7410],{"id":7409},"per-session-довгоживучий-кеш","Per-Session: Довгоживучий кеш",[2964,7412,7413,7414,7417],{},"Identity Map живе протягом всієї сесії користувача (або application-context). Це те, що робить Hibernate ",[2975,7415,7416],{},"SessionFactory"," з L2 Cache та JPA EntityManager.",[7419,7420,7421,7422,7425],"warning",{},"Per-session Identity Map вимагає ",[3270,7423,7424],{},"активної інвалідації",": при оновленні або видаленні запису необхідно явно видалити його з кешу, інакше інший потік або наступний запит того самого користувача прочитає застарілі дані. Без правильної інвалідації система стає джерелом важковловимих багів.",[3315,7427],{},[2959,7429,7431],{"id":7430},"проблеми-identity-map","Проблеми Identity Map",[2964,7433,7434],{},"Незважаючи на очевидні переваги, Identity Map вносить кілька нетривіальних проблем, що необхідно розуміти перед впровадженням.",[5880,7436,7438],{"id":7437},"проблема-1-stale-data-застарілі-дані","Проблема 1: Stale Data (застарілі дані)",[2964,7440,7441],{},"Найнебезпечніший сценарій: два паралельних потоки або два HTTP-запити одночасно завантажують один і той самий об'єкт. Перший оновлює його у БД і у своєму кеші. Другий — досі тримає старий об'єкт у своєму кеші.",[2968,7443,7448],{"className":7444,"code":7446,"language":7447},[7445],"language-text","Потік A:  findById(42) → cache miss → SELECT → author{name=\"Тарас\"} → кеш\nПотік B:  findById(42) → cache miss → SELECT → author{name=\"Тарас\"} → кеш\n\nПотік A:  author.setName(\"Тарас Григорович\") → update() → UPDATE у БД → кеш A оновлено\nПотік B:  findById(42) → cache hit → повертає author{name=\"Тарас\"} ← ЗАСТАРІЛІ ДАНІ!\n","text",[2975,7449,7446],{"__ignoreMap":2973},[2964,7451,7452,7453,7456],{},"Вирішення для per-request: кеш ізольований між потоками — кожен запит має власний ",[2975,7454,7455],{},"CachedJdbcRepository",". Stale data неможливі в межах одного запиту.",[5880,7458,7460],{"id":7459},"проблема-2-витік-памяті-при-per-session-кеші","Проблема 2: Витік пам'яті при per-session кеші",[2964,7462,7463,7464,7466],{},"Якщо Identity Map живе довго, він накопичує об'єкти без звільнення. При роботі з великими колекціями (завантаження всіх аудіокниг через ",[2975,7465,5279],{},") кеш може рости необмежено.",[2964,7468,7469,7472,7473,7476],{},[3270,7470,7471],{},"Рішення:"," обмежена місткість кешу з витісненням по LRU (Least Recently Used). Або стратегія ",[2975,7474,7475],{},"WeakHashMap"," — Java автоматично видаляє записи, коли на об'єкт більше немає сильних посилань.",[2968,7478,7480],{"className":2970,"code":7479,"language":2972,"meta":2973,"style":2973},"// Варіант з WeakHashMap — автоматичне звільнення при GC\nprivate final Map\u003CID, T> store = new java.util.WeakHashMap\u003C>();\n// Увага: не підходить якщо є тільки посилання через кеш — об'єкт може зникнути!\n",[2975,7481,7482,7487,7524],{"__ignoreMap":2973},[2978,7483,7484],{"class":2980,"line":2981},[2978,7485,7486],{"class":3045},"// Варіант з WeakHashMap — автоматичне звільнення при GC\n",[2978,7488,7489,7492,7494,7496,7498,7500,7502,7504,7506,7508,7510,7512,7514,7516,7518,7520,7522],{"class":2980,"line":3007},[2978,7490,7491],{"class":3489},"private",[2978,7493,3719],{"class":3489},[2978,7495,3722],{"class":2984},[2978,7497,3651],{"class":2992},[2978,7499,3654],{"class":2984},[2978,7501,3657],{"class":2992},[2978,7503,3660],{"class":2984},[2978,7505,3733],{"class":2992},[2978,7507,3736],{"class":2988},[2978,7509,2993],{"class":2992},[2978,7511,2997],{"class":2996},[2978,7513,4826],{"class":2984},[2978,7515,3028],{"class":2992},[2978,7517,4831],{"class":2984},[2978,7519,3028],{"class":2992},[2978,7521,7475],{"class":2984},[2978,7523,3746],{"class":2992},[2978,7525,7526],{"class":2980,"line":3014},[2978,7527,7528],{"class":3045},"// Увага: не підходить якщо є тільки посилання через кеш — об'єкт може зникнути!\n",[5880,7530,7532],{"id":7531},"проблема-3-відсутність-thread-safety","Проблема 3: Відсутність thread-safety",[2964,7534,7535,7538,7539,3657,7541,7544],{},[2975,7536,7537],{},"HashMap",", що використовується у нашій реалізації ",[2975,7540,4310],{},[3270,7542,7543],{},"не є потокобезпечним",". При спільному доступі з кількох потоків необхідно або:",[3436,7546,7547,7558],{},[3439,7548,7549,7550,7553,7554,7557],{},"Використовувати ",[2975,7551,7552],{},"ConcurrentHashMap"," (але тоді треба carefully handle ",[2975,7555,7556],{},"get+put"," atomicity)",[3439,7559,7560],{},"Або обмежити область видимості Identity Map одним потоком (per-request у thread-per-request моделі)",[7562,7563,7564,7565,7567],"note",{},"У сучасних Java-фреймворках (Spring, Quarkus) кожен HTTP-запит обробляється в одному потоці протягом усієї обробки (virtual threads у Project Loom або bounded thread pool). Per-request Identity Map із ",[2975,7566,7537],{}," є безпечним у цьому контексті — жодна зовнішня синхронізація не потрібна.",[5880,7569,7571,7572],{"id":7570},"проблема-4-неповнота-кешу-для-findall","Проблема 4: Неповнота кешу для ",[2975,7573,5279],{},[2964,7575,7576,7577,7579,7580,7582,7583,7585,7586,7588,7589,7591],{},"Наша реалізація ",[2975,7578,5941],{}," наповнює кеш, але не позначає кеш як «повний». Після виклику ",[2975,7581,5941],{}," клієнтський код міг би теоретично пропустити ",[2975,7584,3280],{}," і повернути ",[2975,7587,5954],{},". Але ми цього не робимо — і правильно: між ",[2975,7590,5941],{}," і наступним зверненням інші операції могли додати нові рядки.",[2968,7593,7595],{"className":2970,"code":7594,"language":2972,"meta":2973,"style":2973},"// Неправильна оптимізація (не робимо):\n@Override\npublic List\u003CT> findAll() {\n    if (allLoaded) {\n        return new ArrayList\u003C>(identityMap.values()); // небезпечно!\n    }\n    // ...\n}\n// Чому небезпечно: інша транзакція могла додати запис після нашого findAll.\n// Флаг allLoaded = true → ми пропустили новий запис.\n",[2975,7596,7597,7602,7609,7622,7630,7654,7658,7663,7667,7672],{"__ignoreMap":2973},[2978,7598,7599],{"class":2980,"line":2981},[2978,7600,7601],{"class":3045},"// Неправильна оптимізація (не робимо):\n",[2978,7603,7604,7607],{"class":2980,"line":3007},[2978,7605,7606],{"class":2992},"@",[2978,7608,5054],{"class":2984},[2978,7610,7611,7613,7615,7618,7620],{"class":2980,"line":3014},[2978,7612,3642],{"class":3489},[2978,7614,5270],{"class":2984},[2978,7616,7617],{"class":2992},"\u003CT> ",[2978,7619,5279],{"class":3000},[2978,7621,4214],{"class":2992},[2978,7623,7624,7627],{"class":2980,"line":3037},[2978,7625,7626],{"class":2996},"    if",[2978,7628,7629],{"class":2992}," (allLoaded) {\n",[2978,7631,7632,7634,7637,7640,7642,7644,7646,7649,7651],{"class":2980,"line":3042},[2978,7633,3851],{"class":2996},[2978,7635,7636],{"class":2996}," new",[2978,7638,7639],{"class":2984}," ArrayList",[2978,7641,7120],{"class":2992},[2978,7643,4806],{"class":2988},[2978,7645,3028],{"class":2992},[2978,7647,7648],{"class":3000},"values",[2978,7650,3260],{"class":2992},[2978,7652,7653],{"class":3045},"// небезпечно!\n",[2978,7655,7656],{"class":2980,"line":3049},[2978,7657,3875],{"class":2992},[2978,7659,7660],{"class":2980,"line":3076},[2978,7661,7662],{"class":3045},"    // ...\n",[2978,7664,7665],{"class":2980,"line":3081},[2978,7666,4296],{"class":2992},[2978,7668,7669],{"class":2980,"line":3087},[2978,7670,7671],{"class":3045},"// Чому небезпечно: інша транзакція могла додати запис після нашого findAll.\n",[2978,7673,7674],{"class":2980,"line":3092},[2978,7675,7676],{"class":3045},"// Флаг allLoaded = true → ми пропустили новий запис.\n",[2964,7678,7679],{},"Правильне рішення — ніколи не вважати кеш «повним» без явного механізму блокування нових вставок (що виходить за рамки Identity Map).",[3315,7681],{},[2959,7683,7685],{"id":7684},"підсумок","Підсумок",[7687,7688,7689,7716],"card-group",{},[7690,7691,7694],"card",{"icon":7692,"title":7693},"i-heroicons-check-circle","Що вирішує Identity Map",[3436,7695,7696,7704,7707,7713],{},[3439,7697,7698,7699,7701,7702],{},"Усуває зайві ",[2975,7700,3280],{},"-запити при повторних ",[2975,7703,3065],{},[3439,7705,7706],{},"Гарантує єдиний екземпляр об'єкта на ключ у рамках сесії",[3439,7708,7709,7710,7712],{},"Вирівнює семантику ",[2975,7711,3465],{}," Java з PK-ідентичністю реляційної моделі",[3439,7714,7715],{},"Реалізується через Decorator — без зміни існуючого коду",[7690,7717,7720],{"icon":7718,"title":7719},"i-heroicons-exclamation-triangle","Обмеження та застереження",[3436,7721,7722,7725,7730,7735],{},[3439,7723,7724],{},"Per-session кеш потребує активної інвалідації",[3439,7726,7727,7729],{},[2975,7728,5941],{}," завжди звертається до БД",[3439,7731,7732,7734],{},[2975,7733,7537],{}," не є thread-safe для спільного доступу",[3439,7736,7737],{},"Не усуває N+1 (це завдання Lazy Loading зі статті 18)",[2964,7739,7740,7741,7744,7745,7748],{},"Identity Map є першим компонентом того, що Фаулер назвав ",[3270,7742,7743],{},"Session State",": механізмів підтримки узгодженого стану об'єктів протягом однієї одиниці роботи. У наступній статті ми розглянемо ",[3270,7746,7747],{},"Unit of Work"," — компонент, що доповнює Identity Map: він не лише кешує завантажені об'єкти, а й відстежує їх зміни та координує збереження у правильному порядку.",[3315,7750],{},[2959,7752,7754],{"id":7753},"завдання","Завдання",[7756,7757,7759,7773,7778,7844,7849,7914],"collapsible",{"title":7758},"Рівень 1: Замір ефекту кешування",[2964,7760,7761,7762,7764,7765,7768,7769,7772],{},"Реалізуйте лічильник SQL-запитів у ",[2975,7763,6101],{}," або у ",[2975,7766,7767],{},"JdbcAuthorRepository"," (наприклад, ",[2975,7770,7771],{},"AtomicInteger queryCount","). Потім виконайте два сценарії:",[2964,7774,7775],{},[3270,7776,7777],{},"Без кешу:",[2968,7779,7781],{"className":2970,"code":7780,"language":2972,"meta":2973,"style":2973},"AuthorRepository repo = new JdbcAuthorRepository(cm);\nfor (int i = 0; i \u003C 10; i++) {\n    repo.findById(someId); // скільки разів SELECT?\n}\n",[2975,7782,7783,7797,7825,7840],{"__ignoreMap":2973},[2978,7784,7785,7787,7789,7791,7793,7795],{"class":2980,"line":2981},[2978,7786,2985],{"class":2984},[2978,7788,2989],{"class":2988},[2978,7790,2993],{"class":2992},[2978,7792,2997],{"class":2996},[2978,7794,3001],{"class":3000},[2978,7796,3004],{"class":2992},[2978,7798,7799,7802,7804,7807,7810,7812,7816,7819,7822],{"class":2980,"line":3007},[2978,7800,7801],{"class":2996},"for",[2978,7803,5113],{"class":2992},[2978,7805,7806],{"class":2984},"int",[2978,7808,7809],{"class":2988}," i",[2978,7811,2993],{"class":2992},[2978,7813,7815],{"class":7814},"sJj4R","0",[2978,7817,7818],{"class":2992},"; i \u003C ",[2978,7820,7821],{"class":7814},"10",[2978,7823,7824],{"class":2992},"; i++) {\n",[2978,7826,7827,7830,7832,7834,7837],{"class":2980,"line":3014},[2978,7828,7829],{"class":2988},"    repo",[2978,7831,3028],{"class":2992},[2978,7833,3065],{"class":3000},[2978,7835,7836],{"class":2992},"(someId); ",[2978,7838,7839],{"class":3045},"// скільки разів SELECT?\n",[2978,7841,7842],{"class":2980,"line":3037},[2978,7843,4296],{"class":2992},[2964,7845,7846],{},[3270,7847,7848],{},"З кешем:",[2968,7850,7852],{"className":2970,"code":7851,"language":2972,"meta":2973,"style":2973},"AuthorRepository repo = new CachedJdbcRepository\u003C>(new JdbcAuthorRepository(cm), Author::getId);\nfor (int i = 0; i \u003C 10; i++) {\n    repo.findById(someId); // скільки разів SELECT?\n}\n",[2975,7853,7854,7878,7898,7910],{"__ignoreMap":2973},[2978,7855,7856,7858,7860,7862,7864,7866,7868,7870,7872,7874,7876],{"class":2980,"line":2981},[2978,7857,2985],{"class":2984},[2978,7859,2989],{"class":2988},[2978,7861,2993],{"class":2992},[2978,7863,2997],{"class":2996},[2978,7865,4717],{"class":2984},[2978,7867,7120],{"class":2992},[2978,7869,2997],{"class":2996},[2978,7871,3001],{"class":3000},[2978,7873,7127],{"class":2992},[2978,7875,6171],{"class":2996},[2978,7877,6174],{"class":2992},[2978,7879,7880,7882,7884,7886,7888,7890,7892,7894,7896],{"class":2980,"line":3007},[2978,7881,7801],{"class":2996},[2978,7883,5113],{"class":2992},[2978,7885,7806],{"class":2984},[2978,7887,7809],{"class":2988},[2978,7889,2993],{"class":2992},[2978,7891,7815],{"class":7814},[2978,7893,7818],{"class":2992},[2978,7895,7821],{"class":7814},[2978,7897,7824],{"class":2992},[2978,7899,7900,7902,7904,7906,7908],{"class":2980,"line":3014},[2978,7901,7829],{"class":2988},[2978,7903,3028],{"class":2992},[2978,7905,3065],{"class":3000},[2978,7907,7836],{"class":2992},[2978,7909,7839],{"class":3045},[2978,7911,7912],{"class":2980,"line":3037},[2978,7913,4296],{"class":2992},[2964,7915,7916,7917,7919,7920,7922,7923,7925,7926,7928],{},"Виведіть кількість запитів. Очікуваний результат: 10 vs 1. Перевірте також сценарій із ",[2975,7918,5941],{}," → ",[2975,7921,3276],{},": скільки ",[2975,7924,3280],{}," виконається після ",[2975,7927,5941],{},"?",[7756,7930,7932,7938,8096],{"title":7931},"Рівень 2: WeakHashMap і автоматична інвалідація",[2964,7933,7934,7935,7937],{},"Модифікуйте ",[2975,7936,4310],{},", щоб він підтримував два режими зберігання:",[2968,7939,7941],{"className":2970,"code":7940,"language":2972,"meta":2973,"style":2973},"public enum CacheMode {\n    STRONG,  // HashMap — стандартний режим\n    WEAK     // WeakHashMap — об'єкти видаляються GC при відсутності зовнішніх посилань\n}\n\npublic class IdentityMap\u003CID, T> {\n    private final Map\u003CID, T> store;\n\n    public IdentityMap(CacheMode mode) {\n        this.store = mode == CacheMode.WEAK\n            ? new java.util.WeakHashMap\u003C>()\n            : new HashMap\u003C>();\n    }\n}\n",[2975,7942,7943,7955,7963,7971,7975,7979,7997,8019,8023,8039,8057,8077,8088,8092],{"__ignoreMap":2973},[2978,7944,7945,7947,7950,7953],{"class":2980,"line":2981},[2978,7946,3642],{"class":3489},[2978,7948,7949],{"class":3489}," enum",[2978,7951,7952],{"class":2984}," CacheMode",[2978,7954,6055],{"class":2992},[2978,7956,7957,7960],{"class":2980,"line":3007},[2978,7958,7959],{"class":2992},"    STRONG,  ",[2978,7961,7962],{"class":3045},"// HashMap — стандартний режим\n",[2978,7964,7965,7968],{"class":2980,"line":3014},[2978,7966,7967],{"class":2992},"    WEAK     ",[2978,7969,7970],{"class":3045},"// WeakHashMap — об'єкти видаляються GC при відсутності зовнішніх посилань\n",[2978,7972,7973],{"class":2980,"line":3037},[2978,7974,4296],{"class":2992},[2978,7976,7977],{"class":2980,"line":3042},[2978,7978,3011],{"emptyLinePlaceholder":3010},[2978,7980,7981,7983,7985,7987,7989,7991,7993,7995],{"class":2980,"line":3049},[2978,7982,3642],{"class":3489},[2978,7984,3645],{"class":3489},[2978,7986,3648],{"class":2984},[2978,7988,3651],{"class":2992},[2978,7990,3654],{"class":2984},[2978,7992,3657],{"class":2992},[2978,7994,3660],{"class":2984},[2978,7996,3663],{"class":2992},[2978,7998,7999,8001,8003,8005,8007,8009,8011,8013,8015,8017],{"class":2980,"line":3076},[2978,8000,3716],{"class":3489},[2978,8002,3719],{"class":3489},[2978,8004,3722],{"class":2984},[2978,8006,3651],{"class":2992},[2978,8008,3654],{"class":2984},[2978,8010,3657],{"class":2992},[2978,8012,3660],{"class":2984},[2978,8014,3733],{"class":2992},[2978,8016,3736],{"class":2988},[2978,8018,4776],{"class":2992},[2978,8020,8021],{"class":2980,"line":3081},[2978,8022,3011],{"emptyLinePlaceholder":3010},[2978,8024,8025,8027,8029,8031,8034,8037],{"class":2980,"line":3087},[2978,8026,3825],{"class":3489},[2978,8028,3648],{"class":3000},[2978,8030,3166],{"class":2992},[2978,8032,8033],{"class":2984},"CacheMode",[2978,8035,8036],{"class":2988}," mode",[2978,8038,3845],{"class":2992},[2978,8040,8041,8043,8045,8047,8050,8052,8054],{"class":2980,"line":3092},[2978,8042,4957],{"class":3489},[2978,8044,3028],{"class":2992},[2978,8046,3736],{"class":2988},[2978,8048,8049],{"class":2992}," = mode == ",[2978,8051,8033],{"class":2988},[2978,8053,3028],{"class":2992},[2978,8055,8056],{"class":2988},"WEAK\n",[2978,8058,8059,8062,8064,8066,8068,8070,8072,8074],{"class":2980,"line":3098},[2978,8060,8061],{"class":2996},"            ?",[2978,8063,7636],{"class":2996},[2978,8065,4826],{"class":2984},[2978,8067,3028],{"class":2992},[2978,8069,4831],{"class":2984},[2978,8071,3028],{"class":2992},[2978,8073,7475],{"class":2984},[2978,8075,8076],{"class":2992},"\u003C>()\n",[2978,8078,8079,8082,8084,8086],{"class":2980,"line":3120},[2978,8080,8081],{"class":2996},"            :",[2978,8083,7636],{"class":2996},[2978,8085,3743],{"class":2984},[2978,8087,3746],{"class":2992},[2978,8089,8090],{"class":2980,"line":3125},[2978,8091,3875],{"class":2992},[2978,8093,8094],{"class":2980,"line":3131},[2978,8095,4296],{"class":2992},[2964,8097,8098,8099,8102,8103,8105,8106,8109,8110,6725,8113,8115,8116,8118],{},"Напишіть демонстрацію: завантажте автора у ",[2975,8100,8101],{},"WEAK","-кеш, переведіть всі посилання у ",[2975,8104,6669],{},", примусово запустіть GC (",[2975,8107,8108],{},"System.gc()","). Перевірте, чи ",[2975,8111,8112],{},"identityMap.contains(id)",[2975,8114,6752],{},". Поясніть, чому ",[2975,8117,7475],{}," підходить для per-session кешу але не для per-transaction.",[7756,8120,8122,8136,8257],{"title":8121},"Рівень 3: Thread-safe Identity Map",[2964,8123,8124,8125,8128,8129,8131,8132,8135],{},"Реалізуйте ",[2975,8126,8127],{},"ConcurrentIdentityMap\u003CID, T>"," на основі ",[2975,8130,7552],{}," із атомарними операціями ",[2975,8133,8134],{},"computeIfAbsent",":",[2968,8137,8139],{"className":2970,"code":8138,"language":2972,"meta":2973,"style":2973},"public Optional\u003CT> getOrLoad(ID id, java.util.function.Function\u003CID, Optional\u003CT>> loader) {\n    // computeIfAbsent гарантує атомарність get + put\n    // loader — лямбда, що виконує SELECT при cache miss\n    T result = store.computeIfAbsent(id, key ->\n        loader.apply(key).orElse(null)\n    );\n    return Optional.ofNullable(result);\n}\n",[2975,8140,8141,8182,8187,8192,8214,8235,8240,8253],{"__ignoreMap":2973},[2978,8142,8143,8145,8147,8149,8152,8154,8156,8159,8161,8163,8165,8167,8169,8171,8173,8176,8179],{"class":2980,"line":2981},[2978,8144,3642],{"class":3489},[2978,8146,3805],{"class":2984},[2978,8148,7617],{"class":2992},[2978,8150,8151],{"class":3000},"getOrLoad",[2978,8153,3166],{"class":2992},[2978,8155,3654],{"class":2984},[2978,8157,8158],{"class":2992}," id, ",[2978,8160,2972],{"class":2988},[2978,8162,3028],{"class":2992},[2978,8164,4831],{"class":2988},[2978,8166,3028],{"class":2992},[2978,8168,4836],{"class":2988},[2978,8170,3028],{"class":2992},[2978,8172,4841],{"class":2988},[2978,8174,8175],{"class":2992},"\u003CID, ",[2978,8177,8178],{"class":2984},"Optional",[2978,8180,8181],{"class":2992},"\u003CT>> loader) {\n",[2978,8183,8184],{"class":2980,"line":3007},[2978,8185,8186],{"class":3045},"    // computeIfAbsent гарантує атомарність get + put\n",[2978,8188,8189],{"class":2980,"line":3014},[2978,8190,8191],{"class":3045},"    // loader — лямбда, що виконує SELECT при cache miss\n",[2978,8193,8194,8197,8200,8202,8204,8206,8208,8211],{"class":2980,"line":3037},[2978,8195,8196],{"class":2984},"    T",[2978,8198,8199],{"class":2988}," result",[2978,8201,2993],{"class":2992},[2978,8203,3736],{"class":2988},[2978,8205,3028],{"class":2992},[2978,8207,8134],{"class":3000},[2978,8209,8210],{"class":2992},"(id, key ",[2978,8212,8213],{"class":3489},"->\n",[2978,8215,8216,8219,8221,8223,8226,8228,8230,8232],{"class":2980,"line":3042},[2978,8217,8218],{"class":2988},"        loader",[2978,8220,3028],{"class":2992},[2978,8222,5348],{"class":3000},[2978,8224,8225],{"class":2992},"(key).",[2978,8227,6664],{"class":3000},[2978,8229,3166],{"class":2992},[2978,8231,6669],{"class":3489},[2978,8233,8234],{"class":2992},")\n",[2978,8236,8237],{"class":2980,"line":3049},[2978,8238,8239],{"class":2992},"    );\n",[2978,8241,8242,8244,8246,8248,8250],{"class":2980,"line":3076},[2978,8243,7161],{"class":2996},[2978,8245,3805],{"class":2988},[2978,8247,3028],{"class":2992},[2978,8249,3858],{"class":3000},[2978,8251,8252],{"class":2992},"(result);\n",[2978,8254,8255],{"class":2980,"line":3081},[2978,8256,4296],{"class":2992},[2964,8258,8259,8260,8263,8264,8266,8267,8270,8271,8274,8275,8278,8279,8281,8282,8284],{},"Напишіть тест на конкурентність: 10 потоків одночасно викликають ",[2975,8261,8262],{},"getOrLoad()"," для одного і того самого ",[2975,8265,5933],{},". Переконайтеся, що ",[2975,8268,8269],{},"loader"," викликається ",[3270,8272,8273],{},"рівно один раз"," (за допомогою ",[2975,8276,8277],{},"AtomicInteger callCount","). Порівняйте результат з наївним ",[2975,8280,7537],{}," без синхронізації — скільки разів ",[2975,8283,8269],{}," викличеться у race condition?",[8286,8287,8288],"style",{},"html pre.shiki code .sN1BT, html code.shiki .sN1BT{--shiki-light:#267F99;--shiki-default:#4EC9B0;--shiki-dark:#4EC9B0}html pre.shiki code .siwwj, html code.shiki .siwwj{--shiki-light:#001080;--shiki-default:#9CDCFE;--shiki-dark:#9CDCFE}html pre.shiki code .sHH4Y, html code.shiki .sHH4Y{--shiki-light:#000000;--shiki-default:#D4D4D4;--shiki-dark:#D4D4D4}html pre.shiki code .sCDza, html code.shiki .sCDza{--shiki-light:#AF00DB;--shiki-default:#CE92A4;--shiki-dark:#CE92A4}html pre.shiki code .s8Opu, html code.shiki .s8Opu{--shiki-light:#795E26;--shiki-default:#DCDCAA;--shiki-dark:#DCDCAA}html pre.shiki code .spJ8K, html code.shiki .spJ8K{--shiki-light:#008000;--shiki-default:#6A9955;--shiki-dark:#6A9955}html pre.shiki code .sbdoH, html code.shiki .sbdoH{--shiki-light:#A31515;--shiki-default:#CE9178;--shiki-dark:#CE9178}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .su1O8, html code.shiki .su1O8{--shiki-light:#0000FF;--shiki-default:#569CD6;--shiki-dark:#569CD6}html pre.shiki code .sJj4R, html code.shiki .sJj4R{--shiki-light:#098658;--shiki-default:#B5CEA8;--shiki-dark:#B5CEA8}",{"title":2973,"searchDepth":3007,"depth":3007,"links":8290},[8291,8292,8293,8295,8301,8302,8307,8314,8315],{"id":2961,"depth":3007,"text":2962},{"id":3319,"depth":3007,"text":3320},{"id":3471,"depth":3007,"text":8294},"Реалізація IdentityMap\u003CID, T>",{"id":4316,"depth":3007,"text":4317,"children":8296},[8297,8299],{"id":5882,"depth":3014,"text":8298},"Анатомія методу findById() (рядки 61–75)",{"id":5937,"depth":3014,"text":8300},"Чому findAll() завжди йде в БД (рядки 83–90)",{"id":5976,"depth":3007,"text":5977},{"id":6912,"depth":3007,"text":6913,"children":8303},[8304,8305,8306],{"id":7063,"depth":3014,"text":7064},{"id":7196,"depth":3014,"text":7197},{"id":7409,"depth":3014,"text":7410},{"id":7430,"depth":3007,"text":7431,"children":8308},[8309,8310,8311,8312],{"id":7437,"depth":3014,"text":7438},{"id":7459,"depth":3014,"text":7460},{"id":7531,"depth":3014,"text":7532},{"id":7570,"depth":3014,"text":8313},"Проблема 4: Неповнота кешу для findAll",{"id":7684,"depth":3007,"text":7685},{"id":7753,"depth":3007,"text":7754},"Вирішення проблеми подвійного завантаження та розбіжності стану: реалізація Identity Map як кешу первинних ключів, інтеграція з JdbcRepository, дослідження областей видимості та проблем concurrency.","md",null,{},{"title":2309,"description":8316},"TqW849QCsf9lMvS9LhVbpxo-TQQESpspfd2Ju6FUDYM",[8323,8325],{"title":2305,"path":2306,"stem":2307,"description":8324,"children":-1},"Від шлюзів до репозиторіїв: інтерфейс Repository\u003CT,ID>, абстрактний AbstractJdbcRepository на основі Template Method, конкретні реалізації для авторів, жанрів та аудіокниг з JOIN-маппінгом.",{"title":2313,"path":2314,"stem":2315,"description":8326,"children":-1},"Від хаотичних окремих транзакцій до координованого збереження: реалізація Unit of Work з реєстрацією нових, брудних і видалених об'єктів, JDBC-транзакцією як одиницею атомарності, snapshot-based change tracking і координацією з Identity Map.",1777909227242]