Looking for some best practices advice on configuring clustering with the following setup: JBC 3 Hibernate 3.3.1 hib-jbc2 integration 4 Cache instances: entityCache, collectionCache, queryCache, timestampsCache queryCache is LOCAL, three others are INVALIDATION_ASYNC all cluster nodes in the same subnet My main question is this: should I configure a distinct JGroups Channel for each cache instance or have all 3 instances share the same one? I've read that, on one hand, Channels are heavyweight (use multiple threads) which would argue for latter approach. However with a single channel configured as shown below I do see cross-talking between the 3 caches of the same cluster: anonymous wrote : [2/27/09 16:25:45:084] WARN org.jgroups.protocols.UDP - discarded message from different group "dgEntityCacheCluster" (our group is "dgCollectionCacheCluster"). Sender was 172.17.50.103:62010 | [2/27/09 16:25:45:613] WARN org.jgroups.protocols.UDP - discarded message from different group "dgTimestampsCacheCluster" (our group is "dgEntityCacheCluster"). Sender was 172.17.50.103:62012 | [2/27/09 16:25:45:613] WARN org.jgroups.protocols.UDP - discarded message from different group "dgTimestampsCacheCluster" (our group is "dgCollectionCacheCluster"). Sender was 172.17.50.103:62012 | Here's my cache config: anonymous wrote : | <bean id="jbcRuntimeConfig" class="org.jboss.cache.config.RuntimeConfig" depends-on="transactionManager"> | | | | <bean id="baseCacheConfig" class="org.jboss.cache.config.Configuration" abstract="true" depends-on="jbcRuntimeConfig"> | <!-- TODO: same cluster for all caches or one per cache? --> | | | | | | | | | | | | | | | | | | | | and jgroups config: anonymous wrote : | <!-- | Default stack using IP multicasting. It is similar to the "udp" | stack in stacks.xml, but doesn't use streaming state transfer and flushing | author: Bela Ban | version: $Id: udp.xml,v 1.29 2008/09/26 15:59:33 belaban Exp $ | --> | <!-- mcast_addr="${jgroups.udp.mcast_addr:232.10.10.10}" --> | | <UDP | mcast_addr="${jgroups.udp.mcast_addr:232.10.10.10}" | mcast_port="${jgroups.udp.mcast_port:45588}" | tos="8" | ucast_recv_buf_size="20000000" | ucast_send_buf_size="640000" | mcast_recv_buf_size="25000000" | mcast_send_buf_size="640000" | loopback="false" | discard_incompatible_packets="true" | max_bundle_size="64000" | max_bundle_timeout="30" | ip_ttl="${jgroups.udp.ip_ttl:2}" | enable_bundling="true" | enable_diagnostics="true" | thread_naming_pattern="cl" | | thread_pool.enabled="true" | thread_pool.min_threads="2" | thread_pool.max_threads="8" | thread_pool.keep_alive_time="5000" | thread_pool.queue_enabled="true" | thread_pool.queue_max_size="10000" | thread_pool.rejection_policy="discard" | | oob_thread_pool.enabled="true" | oob_thread_pool.min_threads="1" | oob_thread_pool.max_threads="8" | oob_thread_pool.keep_alive_time="5000" | oob_thread_pool.queue_enabled="false" | oob_thread_pool.queue_max_size="100" | oob_thread_pool.rejection_policy="Run"/> | | <PING timeout="2000" | num_initial_members="3"/> | <MERGE2 max_interval="30000" | min_interval="10000"/> | <FD_SOCK/> | <FD_ALL/> | <VERIFY_SUSPECT timeout="1500" /> | | <pbcast.NAKACK use_stats_for_retransmission="false" | exponential_backoff="150" | use_mcast_xmit="true" gc_lag="0" | retransmit_timeout="50,300,600,1200" | discard_delivered_msgs="true"/> | | <pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000" | max_bytes="1000000"/> | <VIEW_SYNC avg_send_interval="60000" /> | <pbcast.GMS print_local_addr="true" join_timeout="3000" | shun="false" | view_bundling="true"/> | <FC max_credits="500000" | min_threshold="0.20"/> | <FRAG2 frag_size="60000" /> | <!--pbcast.STREAMING_STATE_TRANSFER /--> | <pbcast.STATE_TRANSFER /> | <!-- pbcast.FLUSH /--> | | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219575#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...