Thanks. I knew all that but thought glassfish may have a way of
abstracting all this and, in essence, giving me true multi-tenant for free.
This is surely something glassfish could do, and it would be a big win for
a lot of people. Perhaps some day.
Thanks!
Blake
On Tue, Apr 16, 2013 at 5:04 PM, Kevin Schmidt <kevin_at_nextgate.com> wrote:
> You can deploy the same WAR file multiple times with different
> names/context roots to accomplish what you want. You would need to do
> something like having the application look at its name/context root to load
> a different set of properties or use a different data source name to
> connect to the different database, but that is very straight forward.
>
> Note that this does in fact deploy the same code twice though. If you
> want only a single deploy but to use multiple backend databases, you may
> just need to make your app multi-tenant and have the logic in your code to
> connect to different databases based on the user.
>
> From: Blake McBride <blake_at_arahant.com>
> Reply-To: "users_at_glassfish.java.net" <users_at_glassfish.java.net>
> Date: Tue, 16 Apr 2013 14:38:13 -0700
> To: "users_at_glassfish.java.net" <users_at_glassfish.java.net>
> Subject: Can I run multiple instances of one application
>
> Greetings,
>
> I have a web application that connects to a single database and serves X
> number of simultaneous users without a problem.
>
> I would like to start up another instance of the same application that
> would connect to a different database and serve Y simultaneous users from a
> different URL.
>
> If this is possible with glassfish, presumably it would be able to use a
> single copy of the code base with independent and isolated data spaces.
>
> All the applications instances (for now) would be run on the same machine.
>
> I know I can just copy the application code, reconfigure for another
> database, and boot it as a separate application. The point is not have to
> have multiple copies of the application on the disk or in memory. The only
> things different between the instances would be the database it points to,
> the URL to access it, and the memory it takes to support the runtime data.
>
> I need this because the application is very large (15,000+ classes). I
> want to achieve the ability of creating many independent instances running
> without the need to have multiple copies of the code both on disk and in
> memory.
>
> Thanks.
>
> Blake McBride
>
>
>