Spring Boot demo comparing JPA lazy loading (N+1 problem) vs EntityGraph optimization. Shows performance difference between 11 queries vs 1 query for Books-Authors many-to-many relationship. Includes query counting, tests, and metrics.
java demo orm spring-boot jpa hibernate lazy-loading spring-data-jpa query-optimization entity-graph many-to-many performance-optimization sql-optimization database-performance n-plus-one-problem
- Updated
Sep 30, 2025 - Java