The project I work on uses Wicket 1.3.4 and we are using the default session
store (SecondLevelCacheSessionStore.)

The app is clustered and runs on WebLogic 8 through Apache.  I'm not
entirely sure how those two are setup but I don't believe there is any
resource sharing between instances in a cluster.  Instead, when a session is
started, a WebLogic instance is chosen and all future requests in that
session are sent to that one instance.  Using that setup, there shouldn't be
any issues with a user's request going to a machine that doesn't have their
page map.

The problem is happening during normal "forward" use.  The example that I
was given was a user taking a few minutes to fill out some information and
by the time they submit the form, their session appears to have timed out
and they get a page expired error.  I hope that helps to clarify things a
bit.


Matej Knopp-2 wrote:
> 
> couple of questions:
> 
> -what wicket version are you using?
> -are you using httpsessionstore or secondlevelcachesessionstore (default)?
> -what application server/container are you using?
> -are you running the application in clustered environment? if yes,
> what kind of load balancing do you have?
> -do the expirations happen during normal operation or only when using
> back button (or using application in multiple tabs)
> 
> -Matej
> 
> On Thu, Jan 22, 2009 at 7:47 PM, UPBrandon <bcr...@up.com> wrote:
>>
>> In some of our Wicket applications, as the number of users has started to
>> ramp up, we seem to be experiencing a scalability issue.  Some users have
>> had problems with pages expiring quickly.  This is second-hand
>> information
>> so I can't elaborate much but supposedly, during peak times, pages are
>> expiring after just a few minutes of inactivity.  It would be nice to be
>> able to set a minimum retention time but I don't seem to see an option
>> like
>> that.  I've found information about how Wicket stores pages and revisions
>> (http://cwiki.apache.org/WICKET/page-maps.html) but I haven't been able
>> to
>> find much on how Wicket manages that data when things start "filling up."
>> Are there any good explanations out there on the web?
>>
>> -Brandon
>> --
>> View this message in context:
>> http://www.nabble.com/Page-Maps-and-Expirations-tp21610595p21610595.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
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