Hibernate Caching Statistics

Hibernate supports statistical collection and reporting, which can be logged to profile & optimize the app's caching.

To enable it, it needs to be switched on in the session factory e.g.:

• sessionFactory.getStatistics().setStatisticsEnabled(true);

Once that is enabled, it is possible to debug out e.g. in a Servlet Filter the statistics by calling:

• Statistics stats = HibernateUtil.getSessionFactory().getStatistics();
• stats.getSecondLevelCacheHitCount();

Available statistics include:

• Second Level Cache hit/miss counts.
• Entity load/fetch counts.
• Query Cache hit/miss counts.
• Query execution counts.