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From Mike Kienenberger <mkien...@gmail.com>
Subject Re: sync cayenne cache in two web apps
Date Wed, 29 Jul 2009 18:28:55 GMT
I've never set it up, but it's easily configurable.

If you don't like the javagroups or JMS methodologies, you can define
your own -- I don't know what tomcat app-data-sharing ability is
available -- it probably depends on the container, but I don't
remember reading about any in the past.

However, the docs seem to indicate that using Javagroups is pretty
painless with no external configuration to deal with.

I have a Cayenne 1.1.x application I wrote that used remote
notification internally to broadcast events between sessions, so I
know it's not difficult to set up and define your own event
broadcaster.  My guess is that doing it for javagroups is pretty easy
since it sounds like a matter of just filling in the forms on the
modeler.

On Wed, Jul 29, 2009 at 2:15 PM, Tobias
Schoessler<tobias.schoessler@gmail.com> wrote:
> Thanks Mike,
>
> so the answer is yes, this can only be done using remote notification? is
> this correct?
>
> Isn't there a way to share the cache among two web application scopes
> without going through the hassle of setting up remote notification?
>
> When the two webapps are running on the same physical machine, inside the
> same application server this seems overkill.
>
> Tobias
>
> On Wed, Jul 29, 2009 at 6:50 PM, Mike Kienenberger <mkienenb@gmail.com>wrote:
>
>> Yes,
>>
>> Here's a Cayenne 2.0 document on it:
>>
>> http://cayenne.apache.org/doc20/configuring-caching-behavior.html
>>
>> For 3.0:
>>
>> http://cayenne.apache.org/doc/configuring-caching-behavior.html
>>
>> On Wed, Jul 29, 2009 at 12:46 PM, Tobias
>> Schoessler<tobias.schoessler@gmail.com> wrote:
>> > Hi,
>> >
>> > is it possible to sync the cayenne cache of two web applications running
>> in
>> > the same tomcat?
>> >
>> > I observe one web app showing outdated data when the other is committing
>> > updates. Both apps are using the same mapping configuration.
>> >
>> > Do I need to use remote notification for this?
>> >
>> > thanks
>> >
>> > Tobias
>> >
>>
>

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