URGENT! regarding Stateful Session bean in multi server enviornment 2004-08-20 - By Dhiren Mehta
Back
Yes you can use JMS to update the cache, however you need to be aware of
the fact that the JMS being Async, there would be delay in the Message
processing on the other server which would leave open a small time
window during which the cache could potentially be in-consistent on
different server-nodes. If your application can live with it then you
can use JMS for this purpose
-- --Original Message-- --
From: A mailing list for Java(tm) 2 Platform, Enterprise Edition
[mailto:J2EE-INTEREST@(protected)] On Behalf Of Manish Malhotra
Sent: Friday, August 20, 2004 3:22 PM
To: J2EE-INTEREST@(protected)
Subject: URGENT! regarding Stateful Session bean in multi server
enviornment
Hi,
Im using a stateful session bean to implement the ValueListPattern for
one
of my search screen.
Now my quesion is if this appli. is running on clustered envi. Then does
it
make any difference regarding the consistency of the Stateful Session
Bean
data.
And if yes then is there any configuration, so that every contanier
would
have the same state of this bean.
One more related issue is....
Is JMS could be used to update a cache data in the clustered
environment?
Means say on
1st server--> cache = x data
2nd server--> cache = x data
Then something chage from the admin module (web) which affects this
cache...
At this point Im publishing a message and the MDB (listener) for this
topic
will update the cache with the latest data from the database.
And let the latest data = Y
So, after this event now scenaria will be like this
1st server--> cache = Y data
2nd server--> cache = Y data
or not ?
Plz give ur feedback asap!
Many Thanks.
regards
Manish
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