어노테이션&순환 참조&n+1 확인#1
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순환 참조 해결방법 - `@JsonManagedReference / @JsonBackReference/ @JsonIgnore` 사용해서 순환 참조 해결 - DTO: 엔티티는 DB연동만, dto로 클라이언트와의 데이터 교환을 하게 분리하여 해결 - Hibernate 직렬화 대응: Jackson에 Hibernate5Module를 등록해서 해결 --- N+1 해결 방법 - Jpql(커스텀 SQL문)에서 Fetch.Join을 사용하여 해결 - `@EntityGraph`로 필요한 것만 Eager_Loading으로 해결 - Lazy_Loading을 유지하며 BatchSize설정으로 해결
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순환 참조 해결방법
@JsonManagedReference / @JsonBackReference/ @JsonIgnore사용해서 순환 참조 해결N+1 해결 방법
@EntityGraph로 필요한 것만 Eager_Loading으로 해결