Adds a Spring Boot architecture skill for Gradle + Java 21 + Spring Boot 3.5 with strict layer-based packaging and a four-layer call graph (Controller → Service → Manager/Client → Mapper/Repository), with an optional Variant layer for multi-implementation strategies.
Covers: layer responsibilities and call direction rules; project layout (no per-feature packages, no URL prefix — reverse proxy handles versioning); MyBatis + JPA coexistence (MyBatis for complex JOINs / dynamic SQL / reports, JPA for single-table CRUD, shared entity); transfer objects as Request / Response / Entity records; annotation-first MyBatis with XML fallback in resources/mapper; Spring Validation via @Validated at class and parameter level; global exception handling with TraceId; HTTP status code as the response wrapper (no R<T> envelope); TraceId MDC filter; @Transactional on Service with readOnly for queries; SpringDoc OpenAPI; 11 anti-patterns. Forbids Lombok; encourages Java 21 records, var, text blocks, pattern matching, and sealed types.
siujamo
446c5c930f
