Spring

1. IoC Container and Dependency Injection

   Beans, ApplicationContext, constructor injection, bean scopes, lifecycle callbacks, and Java-based configuration.

2. Annotation and Java Configuration

   @Autowired, @Component scanning, @Configuration, @Bean, @Qualifier, and profiles.

3. Spring Boot Reference

   Auto-configuration, starters, embedded servers, and opinionated defaults of Spring Boot.

4. Externalized Configuration

   application.properties and YAML, @ConfigurationProperties, profiles, and environment variables.

5. Aspect-Oriented Programming

   Aspects, advice, pointcuts, proxying, and cross-cutting concerns.

6. Validation, Data Binding and Type Conversion

   Bean Validation, Validator, data binding, Converter and Formatter.

7. Spring Web MVC

   DispatcherServlet, annotated controllers, request mapping, @RestController, exception handling, CORS, and view resolution.

8. REST Clients

   RestClient, RestTemplate, HTTP interface clients, and calling external APIs.

9. Spring WebFlux and Reactive Web

   Reactive stack, Mono and Flux, functional endpoints, and WebClient.

10. Transaction Management

    @Transactional, propagation, isolation, rollback rules, and programmatic transactions.

11. JDBC and ORM Data Access

    JdbcTemplate, DataSource, JPA and Hibernate integration, and exception translation.

12. Spring Boot Data

    DataSource configuration, Spring Data JPA, repositories, and database initialization.

13. Cache Abstraction

    @Cacheable, @CacheEvict, cache managers, and cache providers.

14. Task Execution and Scheduling

    @Async, @Scheduled, TaskExecutor, and thread pools.

15. Testing

    TestContext framework, MockMvc, WebTestClient, and context caching.

16. Spring Boot Testing

    @SpringBootTest, test slices like @WebMvcTest and @DataJpaTest, and Testcontainers.

17. Actuator and Observability

    Health endpoints, metrics, tracing, Micrometer, and production-ready monitoring.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

Source: endoflife.date

• Scrapy
• Selenium
• Sequelize
• shadcn/ui
• Socket.IO
• SolidJS
• SQLAlchemy
• Starlette
• Storybook
• Streamlit
• styled-components
• Svelte