Dumping threads for debugging pourposes

If you don't have a profiler application in production environments you can check out the thread stack on the fly by using this JBoss JMX console MBean to do a very verbose thread dump.
It's a JVM feature, you can do it using jconsole too.

Multicore programming on .NET

One of the guys in my team handled me this article. It's definitely worth sharing. You can obtain huge amounts of performance from using this simple framework into your applications. It's very similar to the util.concurrent package from the Java language.

FAQ: Should I synchronize the access to the HttpSession object?

No, from the Servlet spec 2.5 and upper but you should take care of the objects put on the session in a thread safe manner.