May 2001
Intermediate to advanced
1088 pages
30h 13m
English
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Handling Session Termination
There are two ways a session can be terminated: You force the termination by calling the invalidate method on the session, or the servlet engine times the session out. Depending on what kind of data you store in the session, you might need to perform some kind of cleanup of the session data. For example, you might have a database connection stored in the session, or a connection to an RMI or CORBA service on another machine. Although these resources would eventually be eliminated by Java's garbage collector, you shouldn't keep them open any longer than you need to.
A session object has a callback mechanism to notify an object when it has been associated with a session and when it is no longer associated with a session. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.