So, is there a way I could do application context replication?
Karthik Duddala
Developer - Web Team
Commerce Technologies
Ph. 518-886-0700 x. 3881
"Mike Curwen"
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Subject
Please respond to RE: Session vs. Application
"Tomcat Users Replication
List"
<[EMAIL PROTECTED]
rta.apache.org>
Looking at the bottom of this page:
http://www.javagroups.com/javagroupsnew/docs/success.html
I'd say Filip liked it for Session replication.
> -----Original Message-----
> From: Karthik Duddala [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, October 29, 2003 1:56 PM
> To: Tomcat Users List
> Subject: RE: Session vs. Application Replication
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> Could we use JGroups to replicate application context? Any thoughts ??
>
> thanks
>
> Karthik Duddala
> Developer - Web Team
> Commerce Technologies
> Ph. 518-886-0700 x. 3881
>
>
>
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> "Shapira, Yoav"
>
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> .com>
> To
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> 10/29/2003 12:28
> <[EMAIL PROTECTED]>
> PM
> cc
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> Subject
> Please respond to RE: Session vs.
> Application
> "Tomcat Users Replication
>
> List"
>
> <[EMAIL PROTECTED]
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> rta.apache.org>
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> Howdy,
>
> >Let's say we have a preferences object in each of the jvms running on
> each
> >of the application instances and on one instance we update a
> preference
> >(this is a java package that we are using to store user and system
> >preferences called java.util.prefs which is a singleton in the JVM,
> part of
>
> Oh, JDK 1.4 preferences are not a trivial example. The
> backing store could be different from one JVM to another in
> the cluster.
>
> >But in general, when we have something that could change at the
> application
> >level (and not at the user's session level) we need to find a way to
> >communicate that to every other instance
>
> To toss out another approach: you could have a
> PropertyChangedEvent sent to a JMS topic. All your apps will
> be listening for messages in this topic, and each one can
> handle the PropertyChangedEvent as it needs.
>
> I'm glad you started giving more concrete examples of what
> you're looking for. Just saying "I need application
> replication" is confusing at best: it's hard to help with that ;)
>
> Yoav Shapira
>
>
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