our Cluster has two physical servers, cache mode is set as invalidation and async application is deployed on websphere 6.1 and windows XP and jboss cache 3 below is the Java code method (){ | System.out.println("Cluster members:"+cache.getMembers()); | Object obj = cache.get(Fqn.fromString("/a"),"b"); | if (obj == null) { | cache.put(Fqn.fromString("/a"),"b", "testdata"); | } | | | } Below are steps to reproduce my issue, it caused cache invalidated loop, how to control avoid the cache invalidated loop? appreciate for your help! Step 1 start server 1 and then start server 2 after 1 minutes Step 2: call method on server 1 below is the debug information in server 1 cache lisetner: node /a created; node /a modified; step 3: call method on server 2 Server Console print: Cluster members:[10.111.35.76:3918, 10.111.35.58:3525] below is the debug information in server 2 cache lisetner: node /a created; node /a modified; below is the debug information in server 1 cache lisetner: node /a invalidated Step 4: call method on server 1 Server Console print: Cluster members:[10.111.35.76:3918, 10.111.35.58:3525] below is the debug information in server 1 cache lisetner: node /a created; node /a modified; below is the debug information in server 2 cache lisetner: node /a invalidated Step 5: call method on server 2 Server Console print: Cluster members:[10.111.35.76:3918, 10.111.35.58:3525] below is the debug information in server 2 cache lisetner: node /a created; node /a modified; below is the debug information in server 1 cache lisetner: node /a invalidated ...... This is cache configuration xml: <?xml version="1.0" encoding="UTF-8"?> | | <jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.0"> | <!-- | Used to enable invocation batching and allow the use of Cache.startBatch()/endBatch() methods. | --> | <invocationBatching | enabled="true"/> | | <!-- | Used to register JMX statistics in any available MBean server | --> | <jmxStatistics | enabled="false"/> | <!-- Configure the TransactionManager --> | <transaction transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup"/> | | <clustering mode="invalidation"> | <!-- | timeout: The max amount of time (in milliseconds) we wait until the | state (i.e. the contents of the cache) are retrieved from | existing members in a clustered environment | --> | <stateRetrieval timeout="20000"/> | | <!-- JGroups protocol stack properties. --> | <jgroupsConfig> | <UDP discard_incompatible_packets="true" enable_bundling="true" enable_diagnostics="false" ip_ttl="2" | loopback="false" max_bundle_size="64000" max_bundle_timeout="30" mcast_addr="228.10.10.10" | mcast_port="45588" mcast_recv_buf_size="100000000" mcast_send_buf_size="640000" | oob_thread_pool.enabled="true" oob_thread_pool.keep_alive_time="10000" oob_thread_pool.max_threads="20" | oob_thread_pool.min_threads="8" oob_thread_pool.queue_enabled="false" oob_thread_pool.queue_max_size="10" | oob_thread_pool.rejection_policy="Run" thread_naming_pattern="pl" thread_pool.enabled="true" | thread_pool.keep_alive_time="10000" thread_pool.max_threads="15" thread_pool.min_threads="8" | thread_pool.queue_enabled="true" thread_pool.queue_max_size="100000" | thread_pool.rejection_policy="Discard" | tos="8" ucast_recv_buf_size="20000000" ucast_send_buf_size="640000" use_concurrent_stack="true" | use_incoming_packet_handler="true"/> | <PING num_initial_members="3" timeout="2000"/> | <MERGE2 max_interval="30000" min_interval="10000"/> | <FD_SOCK/> | <FD max_tries="5" shun="true" timeout="10000"/> | <VERIFY_SUSPECT timeout="1500"/> | <pbcast.NAKACK discard_delivered_msgs="true" gc_lag="0" retransmit_timeout="300,600,1200,2400,4800" | use_mcast_xmit="true"/> | <UNICAST timeout="300,600,1200,2400,3600"/> | <pbcast.STABLE desired_avg_gossip="50000" max_bytes="400000" stability_delay="1000"/> | <pbcast.GMS join_timeout="5000" print_local_addr="true" shun="false" view_ack_collection_timeout="5000" | view_bundling="true"/> | <FC max_credits="500000" min_threshold="0.2"/> | <FRAG2 frag_size="60000"/> | <pbcast.STREAMING_STATE_TRANSFER/> | <pbcast.FLUSH timeout="0"/> | </jgroupsConfig> | | <async /> | <!-- Alternatively, to use sync replication, comment out the element above and uncomment the element below. --> | <!-- <sync /> --> | | </clustering> | | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4199984#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...