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Clustering approach.

Viswa
Greenhorn

Joined: May 17, 2004
Posts: 16
Hi,
I have few basic doubt about clustering....
a) How can we maintain single instance model / no duplicate instance across JVM (without terracota server)
b) Do we need any programatic code required for single instance (like keep the db locked and do not allow second server to create instance?
c) If my load balancer (app server level& hardware level) is perfect, still do I need any program/ code to handle?
thanks in adv.
Marcos Maia
Ranch Hand

Joined: Jan 06, 2001
Posts: 977
Hi,

Do you mean a Singleton class? If yes you'll need to use SingletonServices from weblogic.

http://edocs.bea.com/wls/docs103/cluster/service_migration.html#wp1056092

[]
Viswa
Greenhorn

Joined: May 17, 2004
Posts: 16
Hi,
Thanks for your effort. I got few more info.

Many vendor has their own API approach for singleton way. below is the way for weblogic...

http://download.oracle.com/docs/cd/E12840_01/wls/docs103/cluster/service_migration.html#wp1051458

If you do not want to use API, you can go for JMS/DB/thirdparty JVM Clustering for the same.

cheers.
 
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subject: Clustering approach.