Hi Marty and others
I had a problem some time ago and wonder if that could now be implemented better using
Servlets 2.4 and
JSP 2.0. I needed a session counter that kept track of the active sessions, so that I roughly knew how many users were online.
I implemented a SessionCounter class that implemented HttpSessionListener. On sessionCreated() I incremented a static variable and on sessionDestroyed I decremented the static variable (setting it to 0 when it got negative).
The problem there was the fact that this web server rebooted very often (at least twice a day). After every reboot I lost my static variable (it was reset to 0). However, the sessions had been restored by
Tomcat but (of course) I got no sessionCreated() events for those restored sessions... So for at least 2-3 hours (high session timeout)
Now I would like to know if there is a more reliable solution to this problem using the new Servlet Spec 2.4 or if there are new event listeners.
Thank you for any hint.
Regards,
Christian