Hibernate Second Level Cache Provider and Cache Monitor

[Ainar Martin]

I don't have much experience with Hibernate second level cache providers. I have achieved, following EHCache documentation, to configure in my hibernate.cfg.xml and ehcache.xml files the EHCache cache provider. I don't get any Hibernate errors, but I want to really see if the Cache works.

I have downloaded EHCache monitor (free development version) and have followed the documentation (set the probe in the application and run the script) but I always get in the monitor 0 probes registered and no cache statistics are displayed.

I have following cache parameters in my hibernate.cfg.xml:

<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.use_query_cache">true</property>
<property name="hibernate.generate_statistics">true</property> 

my ehcache.xml file:

<?xml version="1.0" encoding="UTF-8"?>
  <ehcache>
  <cache name="com.myproject.domain.client"
   maxEntriesLocalHeap="50"
   eternal="false"
   timeToLiveSeconds="600"
   overflowToDisk="true"
   />
  <cache
   name="com.myproject.domain.product"
   maxEntriesLocalHeap="450"
   eternal="false"
   timeToLiveSeconds="600"
   overflowToDisk="true"
  />
</ehcache>

In my hibernate xml entity mapping file I have added:

<cache usage="read-write" />

I have searched for this problem in the web and in different forums, I have tried different configurations but I didn't have any results, I always get no probe registered. I am using Hibernate 4.

By the way, I would like to know if there is any other free Hibernate second cache level solution that has a good monitoring system. Which second level cache solution is easier to integrate?

I would also like to ask if there is any Hibernate-Memcached conector or plugin. I have found this conector:

http://code.google.com/p/hibernate-memcached/

but it is deprecated and doesn't support Hibernate 4.

Thank you for your help and advice.