Clustering is generally framework-neutral--it's straight JEE as far as I know. 
As long as the session is serializable (hey, thanks a lot, subList :( it should 
work no matter what the framework is.

We're running S2 clustered with no issues.

Dave

--- On Sat, 6/21/08, Ildefonso Montero <[EMAIL PROTECTED]> wrote:

> From: Ildefonso Montero <[EMAIL PROTECTED]>
> Subject: Re: Error replicating sessions with Struts 2 framework java 
> application
> To: "Struts Users Mailing List" <user@struts.apache.org>
> Date: Saturday, June 21, 2008, 6:31 AM
> Dear Laurie,
> 
> thanks for your quick response, maybe I would rename this
> thread as: Does
> Struts 2 support clustering? (see
> link<http://mail-archives.apache.org/mod_mbox/struts-user/200804.mbox/[EMAIL 
> PROTECTED]>
> )
> 
> I have doubts about the replicacion of a SessionMap object
> on the quoted
> architecture, What do you think?
> 
> Regards
> 
> 2008/6/20 Laurie Harper <[EMAIL PROTECTED]>:
> 
> > Problems with Tomcat session replication are really a
> Tomcat issue, not a
> > Struts issue. You will likely have more luck asking on
> the Tomcat user's
> > list. You should include more details about how you
> configured Tomcat for
> > session replication, too, since that seems likely to
> be where the problem
> > lies.
> >
> > L.
> >
> >
> > Ildefonso Montero wrote:
> >
> >> Hi,
> >>
> >> we are having a problem when balancing Tomcat
> session among to clusters.
> >> Architecture is the following: Apache (A)
> balancing 50-50 over Tomcat (1)
> >> and
> >> Tomcat (2).
> >>
> >> We are working on a big application and we saw
> that the session is not
> >> replicated properly because we are doing one
> request for each Tomcat
> >> sequentially (see 50-50 balancing) and we have
> checked that a simple
> >> counter
> >>
> >> that we created inside the session object (our own
> object) accesing using
> >> session.getAttribute("name") the
> resulted pattern is:
> >>
> >> Request 1 in T1, counter = 1
> >> Request 2 in T2, counter = 2
> >> Request 3 in T1, counter = 2
> >>
> >> Request 4 in T2, counter = 3
> >> Request 5 in T1, counter = 3
> >> Request 6 in T2, counter = 4
> >> Request 7 in T1, counter = 4
> >> Request 8 in T2, counter = 5
> >> ....
> >>
> >> so, the value of the counter is not replicated
> properly or we are accesing
> >> it
> >>
> >> in a wrong way. Is interesting for us that the
> Session ID
> >> (session.getID())
> >> shows the same ID in both Tomcats so, we guess the
> is the same but
> >> replication
> >> of attributes values seems to be not replicated.
> >>
> >> Could you please help us?
> >>
> >> Than you in advance.
> >>
> >> some details: Apache 2.2.3, used mod_proxy_ajp
> instead of mod_jk, so we
> >> did
> >> not
> >>
> >> configured workers.properties file, we customized
> httpd.conf file.
> >>
> >>
> >>
> >>
> >
> >
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> >
> 
> 
> -- 
> -----------------------------------------------------------------
> Ildefonso Montero PĂ©rez
> ildefonso.montero{arroba}gmail.com
> monteroperez{arroba}.us.es
> -----------------------------------------------------------------

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