[opencms-dev] User Session Information in a clusterd environment(logged in or not)

[Jason Trump]

OpenCms tracks information about logged-in users in a static Hashtable keyed by session id, rather than in the HttpSession object itself.  So, even on a server cluster with session replication, OpenCms's user data is tied to a single server VM.

I don't know if Alkacon's new commercial clustering module, OCEE, addresses this issue or not.

Hope that helps.

jt

> -----Original Message-----
> From: opencms-dev-bounces at opencms.org [mailto:opencms-dev-
> bounces at opencms.org] On Behalf Of Nick Panienski
> Sent: Thursday, January 12, 2006 11:57 AM
> To: 'The OpenCms mailing list'
> Subject: [opencms-dev] User Session Information in a clusterd
> environment(logged in or not)
> 
> Hi,
> 
> I am looking for a way to share user information between multiple
> instances
> of OpenCms. I have a running cluster with session replication and non-
> sticky
> sessions (this is mandatory for our costumers demand).
> 
> For basic content everything's running fine, but as soon as you log into a
> site the information that a specific user just logged in is only available
> on the server that handled the specific login request. With sticky
> sessions
> that would be no problem, but without the servers delivers privileged (the
> one the user really logged in) and normal content (all other servers)
> throughout the cluster.
> 
> We have to make sure that all nodes in the cluster are aware of logged in
> users.
> 
> If there is no such thing already implemented in OpenCms an explanation of
> how OpenCms handles User login/logoff would be highly appreciated.
> 
> Bye
> Nick Panienski
> 
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