Hi Scott,
Based on the archive mail,
I changed cas-servlet.xml and added repository-type="client" to the
"flow:executor" tag.
<flow:executor id="flowExecutor" repository-type="client"
registry-ref="flowRegistry">
<flow:execution-attributes>
<flow:alwaysRedirectOnPause value="false"/>
</flow:execution-attributes>
</flow:executor>
However I still see the CAS still generating a JSESSIONID ....
Something else needs to be done ?
Thanks,
Alok
From: Scott Battaglia [mailto:[email protected]]
Sent: Tuesday, April 20, 2010 7:17 PM
To: [email protected]
Subject: Re: [cas-user] cas HA
Clustering of the CAS Server is required. But there's multiple levels of
clustering, so let's look at each one differently:
1. Storage-backing mechanism
2. HTTP Sessions
3. Service Registry
#3 is already clustered (assuming you read from a real database and not the
in-memory one).
#2 is optional. HTTP Sessions are not required. If they are on, you gain some
benefits with the Web Flow. However, you can have Spring Web Flow use
client-side storage, and thus you don't need HTTP sessions (and don't have to
worry about clustering them). Worrying about HTTP Sessions means either
session affinity or session clustering.
#1 If you want your CAS servers to both see the tickets, then you need to
cluster your storage. We provide JPA, Memcache and JBoss Cache options for
this.
Cheers,
Scott
On Tue, Apr 20, 2010 at 9:59 PM, Alok Jain
<[email protected]<mailto:[email protected]>> wrote:
Thanks a lot for the clarification
From: Mihir Patel [mailto:[email protected]<mailto:[email protected]>]
Sent: Tuesday, April 20, 2010 6:25 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [cas-user] cas HA
Hi Alok,
When I was working on to upgrade to CAS 3.3.5, I came across the same question
you have and I also posted it in forum and at that time Scott B confirmed
(http://n4.nabble.com/CAS-Cluster-Is-session-replication-needed-td998800.html)
that http session clustering is not needed even though it is mentioned in the
wiki link below. At my company we have setup of 2 (as well as 4) nodes cluster
with JBoss Cache on Tomcat without any clustering at tomcat level (check out my
post
http://n4.nabble.com/Performance-numbers-with-JBossCache-3-2-1-GA-td1747460.html).
Hope this helps.
-Mihir
On Tue, Apr 20, 2010 at 5:33 PM, Alok Jain
<[email protected]<mailto:[email protected]>> wrote:
Hi Mihir,
Thanks for your reply . However the link
http://www.ja-sig.org/wiki/display/CASUM/Clustering+CAS
mentions that clustering is still required .
Alok.
From: Mihir Patel [mailto:[email protected]<mailto:[email protected]>]
Sent: Tuesday, April 20, 2010 5:21 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [cas-user] cas HA
Hi Alok,
Clustering for http sessions at application server level is not required as
long as your load balancer has sticky session (session affinity).
-Mihir
On Tue, Apr 20, 2010 at 5:03 PM, Alok Jain
<[email protected]<mailto:[email protected]>> wrote:
Hi ,
I am using CAS with JPA ticket registry . If I want to have 2
instances of CAS behind the load-balancer , do I still need to do clustering as
I am using database for the tickets.
Thanks,
Alok
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