Hello everyone,

I have been trying to setup CAS cluster with tomcat 6.0.20 and JBoss Cache with 
CAS version 3.3.5 with apache as a load balancer in front of my two tomcat 
servers.

I have question on one requirements for CAS Cluster, Session 
cluster/replication. With my setup and preliminary test, looks like Session 
replication/cluster isn't required provided that you have a load balancer with 
sticky session in place. Even with sticky session and without session 
clustering, there is one situation where users might see unexpected behavior, 
which is, say you requested /cas/login to load balancer and your sticky session 
was assigned to tomcat instance T1 and you get the login page from T1, and 
before you submit the credentials, if server T1 crashes (for whatever reason) 
then your submit request gets redirected and assigned to tomcat instance T2 and 
even though you entered correct credentials, tomcat instance T2 is going to 
show you the login screen again without any info/error/success message.

So anyone with more clustering/CAS experience please let me know if my 
understanding above correct?

Thanks,
Mihir

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