[jboss-user] [JBoss Cache: Core Edition] - Cluster config: Channel per Cache instance?

[dukehoops]

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#4219575

Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4219575