Hi there,

I am going to implement a web application using Hibernate, and I'll create a servlet for controlling. I am not sure if I need to use ThreadLocal to handle the session? I am a bit confused; anyone knows when we are supposing to use ThreadLocal?


Thanks a lot!

You probably need to use a ThreadLocal if your web app is threaded (which is almost certainly is). SessionFactory is thread safe but Session is not so each thread must have its own Session. A good way to ensure this is with ThreadLocal. I think the wiki explains this pretty well.

Threadlocal variables are a convinient way to get the power of singleton model wo having it's drawbacks:
* you can access threaded variable easily
* no synchro needed (neither scalability issues) since you use it in the same thread

This roll for 2+ tiers applications

Thank you guys for the reply!

I will try to use ThreadLocal, and hope it works for me!

Thanks