Spring Boot REST Architecture & Microservice Endpoints
Architect web REST APIs, dependency injection beans, Spring Data JPA repositories, REST controllers, and DTO request validation.
Spring Boot REST Component Layers
### Spring REST Architecture Layers
1. **Controller Layer (`@RestController`)**: Handles HTTP requests (`@GetMapping`, `@PostMapping`), path parameters, and DTO request validation (`@Valid`).
2. **Service Layer (`@Service`)**: Encapsulates business logic rules, data transformations, and transaction boundaries.
3. **Repository Layer (`@Repository`)**: Interfaces with database persistence storage.