[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Second Level Cache with JBoss TreeCache

[JohnDoe2]

Hi,

we use the JBoss TreeCache for the Hibernate Second Level Cache. I found out that each Second Level Cache Entity is held in a separate node (for example, there are one node for OrderType[id-1] and one node for OrderType[id-2] '/com/sales/hibernate/OrderType/com.sales.hibernate.OrderType#1' and '/com/sales/hibernate/OrderType/com.sales.hibernate.OrderType#2').

Because we have many Second Level Cache Enties our TreeCache have thousands of nodes.

I actually expected that each node is for one EntityType (OrderType.class) and the map in the node holds the Enties of this type (OrderType#1; OrderType#2).

We use JBoss 4.0.5.GA with Hibernate 3.2.4.ga.
The treecache.xml:

  | <?xml version="1.0" encoding="UTF-8"?>
  | <server>
  |     <mbean code="org.jboss.cache.TreeCache"
  |         name="jboss.cache:service=TreeCache">
  | 
  |         <depends>jboss:service=Naming</depends>
  |         <depends>jboss:service=TransactionManager</depends>
  |     
  |         <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
  | 
  |         <attribute name="CacheMode">LOCAL</attribute>
  | 
  | 		<attribute name="ClusterName">Sales_Hibernate_Cache</attribute>
  | 
  |         <!--
  |              Max number of entries in the cache. If this is exceeded, the
  |              eviction policy will kick some entries out in order to make
  |              more room
  |         -->
  |         <attribute name="MaxCapacity">7000</attribute>
  | 
  |         <!--
  |             The max amount of time (in milliseconds) we wait until the
  |             initial state (ie. the contents of the cache) are retrieved from
  |             existing members in a clustered environment
  |         -->
  |         <attribute name="InitialStateRetrievalTimeout">20000</attribute>
  | 
  |         <!--
  |             Number of milliseconds to wait until all responses for a
  |             synchronous call have been received.
  |         -->
  |         <attribute name="SyncReplTimeout">10000</attribute>
  | 
  |         <!-- Max number of milliseconds to wait for a lock acquisition -->
  |         <attribute name="LockAcquisitionTimeout">15000</attribute>
  | 
  |         <!-- Max number of milliseconds we hold a lock (not currently
  |         implemented) -->
  |         <attribute name="LockLeaseTimeout">60000</attribute>
  | 
  |         <!-- Name of the eviction policy class. Not supported now. -->
  |         <attribute name="EvictionPolicyClass"></attribute>
  |     </mbean>
  | </server>
  | 


What can i do to get the expected behavior?

Thanks,
John



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