Hi!
O Mar, 11-03-2008 ás 22:32 -0600, Filip Hanik - Dev Lists escribiu:
for it to work you would need to have channelSendOptions=6,
No, it doesn't work too. I've already tried with it... With synchronous
session replication server response is a bit slower (but too much...)
but I have the same problem...
however,
not using sticky sessions is a bad strategy,
I know, but then, what is the reason for supporting them at all?
Cheers,
Vreixo
no matter how you look at it.
using sticky sessions, one can take advantage of asynchronous messaging
and hence not affect the overall response time
and other benefits of course
Filip
Vreixo Formoso wrote:
Hi!
I've a session replication problem I don't know how to solve.
I've installed a tomcat cluster with 2 tomcat workers (v6.0.14) and an
apache server 2.2.3 as load balancer, with mod_jk.
I've configured DeltaManager for session replication. When I use sticky
sessions, all works propertly, when I stop one tomcat the other one
handles the session.
However, if I disable sticky sessions things change. As a first sight,
it seems to work ok. Each request is processed by a different tomcat,
sessions are replicated propertly. However, if I send several requests
too fast (well, not so fast, just clicking F5 in the web browser 1 or 2
times per second), after a short time the session is suddenly lost, and
a new session is created. May it be a session replication problem? I've
tried with several cluster-channelSendOptions but I always have the
same problem. Note that with sticky sessions in the load balancer the
problem does not exists. Any ideas?
Thank you in advance.
Cheers,
Vreixo Formoso
- cluster config in server.xml --
Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster
channelSendOptions=4
Manager
className=org.apache.catalina.ha.session.DeltaManager
expireSessionsOnShutdown=false
notifyListenersOnReplication=true/
Channel
className=org.apache.catalina.tribes.group.GroupChannel
Membership
className=org.apache.catalina.tribes.membership.McastService
address=228.0.0.4
port=45564
frequency=500
dropTime=3000/
Receiver
className=org.apache.catalina.tribes.transport.nio.NioReceiver
address=auto
port=4002
autoBind=100
selectorTimeout=5000
maxThreads=6/
Sender
className=org.apache.catalina.tribes.transport.ReplicationTransmitter
Transport
className=org.apache.catalina.tribes.transport.nio.PooledParallelSender/
/Sender
Interceptor
className=org.apache.catalina.tribes.group.interceptors.TcpFailureDetector/
Interceptor
className=org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor/
/Channel
Valve className=org.apache.catalina.ha.tcp.ReplicationValve
filter=/
Valve
className=org.apache.catalina.ha.session.JvmRouteBinderValve/
Deployer
className=org.apache.catalina.ha.deploy.FarmWarDeployer
tempDir=/tmp/war-temp/
deployDir=/tmp/war-deploy/
watchDir=/tmp/war-listen/
watchEnabled=false/
ClusterListener
className=org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener/
ClusterListener
className=org.apache.catalina.ha.session.ClusterSessionListener/
/Cluster
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