2. Db UtilIf you are using JPA and Hibernate, this tool can auto-detect N+1 query issues during testing.
3. Hypersistence OptimizerHypersistence Optimizer allows you to get the most out of JPA and Hibernate. By scanning your application configuration and mappings, Hypersistence Optimizer can tell you what changes you need to do to speed up your data access layer.
4. Vladmihalcea.wordpress.comSome of the source code for vladmihalcea.com. The hibernate-master-class and the high-performance-java-persistence are used as blog source code repos as well.
6. Hibernate TypesThe Hibernate Types library gives you extra types that are not supported by the Hibernate ORM core.
7. Flexy PoolFlexyPool adds metrics and failover strategies to a given Connection Pool, allowing it to resize on demand.