Some of our reasons to do this:
better separation between the applications:
- If one webbapp needs to go down for maintainance, the others can
still run.
- Better control on the resource usage.
As you can't define memory settings on the context level, there
is no way to retrict the memory usage of a webapp.
- Better control which webapp can access which files. (Each wepapp
has a dedicated operating system user, so it's much easier to define
which right a webapp has on which files. This is quite important to
us, as different webapps belong to different customers)
- If one application runs havoc (OutOfMemory, DeadLocks, etc), the other
applications keep running, as long as the application doesn't
consume 100% of the cpu.
- The possibilty to use different tomcats and jdk's for each webapp.
(We have some application that run better under the IBM JDK and
other run better under the Sun JDK.
- You win scalability. If you would like to put it on a different
machine to get more performance it's much easier if it is running
in a dedicated instance.
The downside is, that you need more memory to serve the same amount of
applications. (As none of our server reaches it's limits we don't have
a problem with that).
> -----Original Message-----
> From: Alex Burton [mailto:[EMAIL PROTECTED]
> Sent: Thursday, May 29, 2003 12:50 PM
> To: Tomcat Users List; Rohit Peyyeti
> Subject: RE: Multiple instances
>
>
> Why do you want to run separate instances for each
> application? Why not just
> setup more <host> inside one instance?
>
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