J2EE Distributable setting

Robert S. Sfeir wrote:

This is not specific to IDEA, and I was wondering if someone out there
has used it, and which web container they've used it with. Normally
Distributable means whether the web module is deployable into a
distributed (multi-VM) servlet container.

Well say you have a server cluster (resin in my case) adding
distributable does what? Does that help sharing sessions across
containers? Does it help with serialization of objects???

What's the deal? I keep looking for info on the web about it, but I've
found very little so far.

Finally stumbled on this thanks to Christophe Laprun.
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/cluster-howto.html

Seems the rules are:
1- Serialize objects which you store in the session scope (my Business
Object beans usually)

2- Add the Distributable element to web.xml

3- The web container has to support it

Good enough for me, I'm turning that sucker on from now on :)

R