Session Management in Clustering

[Malli Raman]

Hi,

Head First EJB Book says that only one copy of the session objects will be available for all jvm's. Container will manages these session objects and whenever the request goes to alternate server then the session objects will be moved to the server.

My Question is

1) How the application servers are maintaining the session objects.
Whether the container will manage the session objects as described above?
or will all the application servers will have a copy of the session objects?

2) If so, What will happen if the first servers gets down and the request goes to the second server?


Thanks & Regards,
M.S.Raman

[Mark Spritzler]

Is this a Servlets Session question, or an EJB Stateful Session Bean question?

Mark

[Malli Raman]

 

Originally posted by Mark Spritzler:
Is this a Servlets Session question, or an EJB Stateful Session Bean question?

Mark

Hi Mark,

First my apologies for that I have mentioned the book name as "Head First EJB" instead of Head First Servlets & JSP in the above paragraph.(Head First EJB is always in my poor memory!).

As your question suggests that there seems to be a different mechanism for session management for stateful session ejb, I would like to know about the session management for stateful session ejb in clustering environment.

-M.S.Raman