Hibernate 2nd level cache: Not able to evict

Hibernate ORM
1

I am using Hibernate 4.1.7 and EhCache as second level cache. I am implementing a rest service to clear cahce (evict all regions ) as needed.

Below is code snippet

org.hibernate.stat.Statistics statistics = HibernateUtil.getSessionFactory().getStatistics();
      statistics.setStatisticsEnabled(true);

      long hits = statistics.getSecondLevelCacheHitCount();
      long misses = statistics.getSecondLevelCacheMissCount();
      long puts = statistics.getSecondLevelCachePutCount();

      logger.info("Hits: " + hits + " Misses: " + misses +  " Puts:" + puts);


      cache.evictEntityRegions();

      hits = statistics.getSecondLevelCacheHitCount();
      misses = statistics.getSecondLevelCacheMissCount();
      puts = statistics.getSecondLevelCachePutCount();


      logger.info("Hits: " + hits + " Misses: " + misses +  " Puts:" + puts);         

      long hit0 = statistics.getQueryCacheHitCount();
      long miss0 = statistics.getSecondLevelCacheMissCount();

Unfortunately, I get same values for hits/misses and puts after I evict all regions.

Appreciated if some can shed some lights.

2

And Hibernate is the only client of EhCache in your application?
(no Spring or other framework caching method results in the same cache? … Hibernate will not evict these entries…)

3

Unfortunately, I get same values for hits/misses and puts after I evict all regions.

That’s because you forgot to clear the Statistics:

cache.evictEntityRegions();
statistics.clear();