Re: Sessions
Re: Sessions
- Subject: Re: Sessions
- From: Art Isbell <email@hidden>
- Date: Mon, 30 Jan 2006 12:11:59 -1000
On Jan 30, 2006, at 10:59 AM, Norberto Menendez wrote:
How is it that you establish sessions that don't time out in WO
(for an application with a small number of users < 50) ?
WOSession's setTimeOut() method takes a double as the number of
seconds argument. I believe that if you calculate the time interval
that the largest double would represent, it would be considerably
longer than the time interval since the Big Bang :-) If you manage
your WO apps using JavaManager, you would need to set the session
time out to a very large value in JavaMonitor. So that should solve
the problem of session inactivity time-outs :-)
But do you really want to do this? JavaMonitor won't be able to
restart an instance unless the number of active sessions equals the
minimum active session count (0 by default). If you set the minimum
active session count to a number larger than the maximum number of
sessions you expect to be active, then the instance will restart when
scheduled. However, in doing so, you might pull the session out from
under a truly active user which usually isn't cool. Maybe you could
inform your users that periodic maintenance would occur which would
restart your app at a time of very low user activity.
If you don't restart instances periodically, each instance could
gradually increase its memory usage which could negatively affect
performance. This is especially true if the app fetches objects from
a database. A cached object snapshot will not be freed as long as a
reference exists from an editing context (e.g., WOSession's default
editing context). So your app can gradually fetch an entire database
into its cached snapshots if users fetch a variety of objects.
Aloha,
Art
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| | >Sessions (From: Norberto Menendez <email@hidden>) |