How to configure second level cache in Hibernate 4.1.5 SP1?

hibernate second-level-cache hibernate-4.x
MrStack picture MrStack · Aug 6, 2012 · Viewed 27.2k times · Source

I have read other threads on here about this subject but none of the solutions work for me.

I tried putting this in my hibernate.cfg.xml:

<property name="hibernate.cache.region.factory_class">org.hibernate.cache.spi.EntityRegion</property>

I always get this error: could not instantiate RegionFactory [org.hibernate.cache.spi.EntityRegion]

I also tried most suggestions from threads on Hibernate websites but no luck.

So how do I configure this?

Answer

MrStack picture MrStack · Aug 6, 2012

Well, I found the answer (from a Youtube user):

  1. Use hibernate-release-4.1.0.Final or later versions.
  2. Add jars from lib\optional\ehcache directory

  3. Update hibernate.cfg.xml:

    <property name="cache.region.factory_class">org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory</property>

  4. Add slf4j-api-1.6.1.jar (I found it in ehcache-2.5.1-distribution.tar­.gz downloaded from ehcache.org in addition) because of ClassNotFoundException.

  5. Add this to your hibernate.cfg.xml:

    <!-- Enable Hibernate's automatic session context management -->
<property name="cache.use_second_level_cache">true</property>

The key point here was adding the ehcache jar from the optional\ directory in Hibernate4.

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