JBossCache + Hibernate + Spring
narendrakg Jan 3, 2008 2:47 AMHi,
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=192.168.102.71:1793, 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();
cacheEntries.length()
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" ?> <server> <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar" /> <!-- ==================================================================== --> <!-- Defines TreeCache configuration --> <!-- ==================================================================== --> <mbean code="org.jboss.cache.TreeCache" name="jboss.cache:service=TreeCache"> <depends>jboss:service=Naming</depends> <depends>jboss:service=TransactionManager</depends> <!-- Configure the TransactionManager --> <attribute name="TransactionManagerLookupClass">org.jboss.cache.GenericTransactionManagerLookup</attribute> <!-- Node locking scheme : PESSIMISTIC (default) OPTIMISTIC --> <attribute name="NodeLockingScheme">PESSIMISTIC</attribute> <!-- Node locking isolation level : SERIALIZABLE REPEATABLE_READ (default) READ_COMMITTED READ_UNCOMMITTED NONE (ignored if NodeLockingScheme is OPTIMISTIC) --> <attribute name="IsolationLevel">REPEATABLE_READ</attribute> <!-- Valid modes are LOCAL REPL_ASYNC REPL_SYNC INVALIDATION_ASYNC INVALIDATION_SYNC --> <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"> <config> <!-- 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="228.2.2.2" 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" /> </config> </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">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"> <config> <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> </region> </config> </attribute> </mbean> </server>
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); query.setCacheable(true); lstResults = query.list();
Code for Object Cache
SystemParameter systemParameter = (SystemParameter)session.get(SystemParameter.class, parameterName);