springboot-patterns

name	springboot-patterns
type	reference
description	Spring Boot architecture patterns, REST API design, layered services, data access, caching, async processing, and logging. Use for Java Spring Boot backend work.
origin	ECC
paths	["**/*.java","**/pom.xml","**/build.gradle*","**/application*.yml"]
when_to_use	When building Java Spring Boot backends, designing REST APIs, implementing layered services, or configuring async processing
allowed-tools	Read, Glob, Grep
user-invocable	true
effort	3

Spring Boot Development Patterns

Spring Boot architecture and API patterns for scalable, production-grade services.

When to Activate

• Building REST APIs with Spring MVC or WebFlux
• Structuring controller → service → repository layers
• Configuring Spring Data JPA, caching, or async processing
• Adding validation, exception handling, or pagination
• Setting up profiles for dev/staging/production environments
• Implementing event-driven patterns with Spring Events or Kafka

REST API Structure

@RestController
@RequestMapping("/api/markets")
@Validated
class MarketController {
  private final MarketService marketService;

  MarketController(MarketService marketService) {
    this.marketService = marketService;
  }

  @GetMapping
  ResponseEntity<Page<MarketResponse>> list(
      @RequestParam(defaultValue = "0") int page,
      @RequestParam(defaultValue = "20") int size) {
    Page<Market> markets = marketService.list(PageRequest.of(page, size));
    return ResponseEntity.ok(markets.map(MarketResponse::from));
  }

  @PostMapping
  ResponseEntity<MarketResponse> create(@Valid @RequestBody CreateMarketRequest request) {
    Market market = marketService.create(request);
    return ResponseEntity.status(HttpStatus.CREATED).body(MarketResponse.from(market));
  }
}

Repository Pattern (Spring Data JPA)

public interface MarketRepository extends JpaRepository<MarketEntity, Long> {
  @Query("select m from MarketEntity m where m.status = :status order by m.volume desc")
  List<MarketEntity> ;
}