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distributed across multiple JVM

Micheal John
Ranch Hand

Joined: Nov 01, 2006
Posts: 344


What are the correct answers?

If the web-application is distributed across the multiple JVM, what will be status for ServletContext and session object...?


Micheal John
SCJP 1.4 (86%), SCWCD 1.4 (86%), SCBCD 1.3 (85%), SCDJWS (Just Started...) - Satisfaction Lies in Our EFFORT, Not in the ATTAINMENT
Stella Kim
Greenhorn

Joined: Jan 18, 2007
Posts: 25
When the web-application is distributed across TWO VMs :

Everything except the 'HttpSession' is duplicated on the other VM.
'HttpSession' objects(including their attributes) 'move' from one VM to another.
'HttpSession' live in only ONE place at any given moment, so same session ID for a given web app will NEVER appear in two VMs at the same time.

<HF book on page 255>


Kim<br />SCJP 1.4 (98%)<br />SCWCD (92%)
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: distributed across multiple JVM