right now clustering is not available in JBoss. As for the client, well they
would see nothing different they would still make the call to the webserver
normally, and some device (software or hardware) would decide which node
would handle the call. whether sessions are tied to a single server or are
available on all the app servers is up to the appserver. Some servers do
this with stateful session beans, others do not. Or so I am told. The only
case of clustering I have worked with personally is one where it was an all
or nothing failover node, so we were not worried about sessions persisting
and such.
Al
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of ZHU Jia
Sent: Wednesday, June 13, 2001 2:36 AM
To: jbossuser
Subject: [JBoss-user] Newbie question about clustering
Hi all,
can someone explain to me the basic concept about clustering? I mean I
know approximately what and why it is, but I'm interested in the
details.
For example if I have a cluster of EJB AppServer, how does the client
make the call and how is the session maintained with the cluster? Can
one session spawn across several
servers? And how does the cluster realize the load balancing?
We use JBoss now as our EJB platform, but both general tips and JBoss
specific ones are welcome. Also, some pointers to resource in the web
would be highly appreciated.
Many thanks in advance!
ZHU Jia
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