5 Replies Latest reply on Feb 5, 2008 12:28 PM by Mircea Markus

    JBossCache + Hibernate + Spring

    Narendra Gupta Newbie


      I am building demo application to validate JBoss Cache with Hibernate and WebLogic cluster.
      I have choosen JBoss Cache to hold table data in form of OBJECT CACHE and QUERY CACHE. I am new to JBoss Cache and facing few problems in configuring same.

      I have already done the setup and everything seems working fine except some unexpected error as mentioned below.

      org.jboss.cache.ReplicationException: rsp=sender=, retval=null, received=false, suspected=false
      at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:3268)
      at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:3215)
      at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:3291)

      I made few changes in xml as per below (Made it REPL_ASYNC, mcast_addr is not same in other deployements with JBoss cache on same network), and have taken following approach to test JBoss Cache.

      a) Object Cache:-

      Using Statistics: Cache entries return the number of entries loaded into cache.

      SecondLevelCacheStatistics slcs = session.getSessionFactory().getStatistics().getSecondLevelCacheStatistics( SystemParameter.class.getName() );
      Map cacheEntries = slcs.getEntries();

      Manual Assumption: Database changes are not reflecting into the system till the timeout configured in xml file.

      b) Query Cache: Hibernate is not reflecting the query into command prompt when show_sql is true.

      Could you please let me know if there could be any expected problem?

      Code - jboss-cache.xml

      <?xml version="1.0" encoding="UTF-8" ?>
       <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar" />
       <!-- ==================================================================== -->
       <!-- Defines TreeCache configuration -->
       <!-- ==================================================================== -->
       <mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache">
       <!-- Configure the TransactionManager -->
       <attribute name="TransactionManagerLookupClass">org.jboss.cache.GenericTransactionManagerLookup</attribute>
       Node locking scheme :
       PESSIMISTIC (default)
       <attribute name="NodeLockingScheme">PESSIMISTIC</attribute>
       Node locking isolation level :
       REPEATABLE_READ (default)
       (ignored if NodeLockingScheme is OPTIMISTIC)
       <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
       <!-- Valid modes are LOCAL
       <attribute name="CacheMode">REPL_ASYNC</attribute>
       <!-- Whether each interceptor should have an mbean
       registered to capture and display its statistics. -->
       <attribute name="UseInterceptorMbeans">true</attribute>
       <!-- Name of cluster. Needs to be the same for all clusters, in order
       to find each other -->
       <attribute name="ClusterName">hacluster</attribute>
       <attribute name="ClusterConfig">
       <!-- UDP: if you have a multihomed machine,
       set the bind_addr attribute to the appropriate NIC IP address
       <!-- UDP: On Windows machines, because of the media sense feature
       being broken with multicast (even after disabling media sense)
       set the loopback attribute to true
       <UDP mcast_addr="" mcast_port="45566" ip_ttl="64" ip_mcast="true"
       mcast_send_buf_size="150000" mcast_recv_buf_size="80000" ucast_send_buf_size="150000"
       ucast_recv_buf_size="80000" loopback="false" />
       <PING timeout="2000" num_initial_members="3" up_thread="false" down_thread="false" />
       <MERGE2 min_interval="10000" max_interval="20000" />
       <FD shun="true" up_thread="true" down_thread="true" />
       <VERIFY_SUSPECT timeout="1500" up_thread="false" down_thread="false" />
       <pbcast.NAKACK gc_lag="50" max_xmit_size="8192" retransmit_timeout="600,1200,2400,4800" up_thread="false"
       down_thread="false" />
       <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10" down_thread="false" />
       <pbcast.STABLE desired_avg_gossip="20000" up_thread="false" down_thread="false" />
       <FRAG frag_size="8192" down_thread="false" up_thread="false" />
       <pbcast.GMS join_timeout="5000" join_retry_timeout="2000" shun="true" print_local_addr="true" />
       <pbcast.STATE_TRANSFER up_thread="false" down_thread="false" />
       <!-- 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">5000</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>
       <!-- Name of the eviction policy class. -->
       <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
       <!-- Specific eviction policy configurations. This is LRU -->
       <attribute name="EvictionPolicyConfig">
       <attribute name="wakeUpIntervalSeconds">43200</attribute>
       <!-- Cache wide default -->
       <region name="/_default_">
       <attribute name="maxNodes">50000</attribute>
       <attribute name="timeToLiveSeconds">43200</attribute>
       <attribute name="maxAgeSeconds">43200</attribute>

      Hibernate Configuration
      <prop key="hibernate.cache.use_second_level_cache">true</prop>
      <prop key="hibernate.cache.use_query_cache">true</prop>
      <prop key="hibernate.cache.provider_class">org.hibernate.cache.TreeCacheProvider</prop>

      Datamodel hbm file
      <cache usage="read-only"/>

      Code for Query Cache
      query = session.createQuery("FROM SystemParameter AS SP WHERE SP.PARAMETER_NAME=:PARAMETER_NAME");
      query.setString("PARAMETER_NAME", parameterName);
      lstResults = query.list();

      Code for Object Cache
      SystemParameter systemParameter = (SystemParameter)session.get(SystemParameter.class, parameterName);