[infinispan-dev] Obtaining cache via CDI on WildFly

[Sanne Grinovero]

Hi Gunnar,

if all you want is to invalidate Hibernate ORM's 2LC caches, Hibernate
exposes a specific API to do just that.

Sanne

On Wed, 5 Dec 2018 at 14:30, Gunnar Morling <gunnar at hibernate.org> wrote:
>
> Hey all,
>
> Thanks a lot for the quick replies!
>
> To give some background on what I was trying to do: my intention was
> to use a simple cache within my app for a demo + blog post I'm
> creating on invalidating the JPA 2nd-level cache after external data
> changes (i.e. bypassing the app) via Debezium:
>
>     https://github.com/debezium/debezium-examples/tree/master/cache-invalidation
>     https://github.com/debezium/debezium.github.io/pull/230
>
> For that I need a simple in-app cache to keep track of all
> transactions run by the app itself, so to keep them apart from
> transactions run by external clients (as I need to invalidate the 2L
> cache items only for the latter).
>
> So the questions around support are not too much of a concern for my
> purpose. Using the modules coming with the server seemed so easy in
> comparison to putting the modules in place :) I'll try and have a look
> at how this could be done in my Dockerfile (this btw. could be an
> interesting example for you to have, too). Regarding CDI, I gave up on
> this and just obtained a cache via the API. Seemed simpler in the end.
>
> Thanks again,
>
> --Gunnar
>
>
> Am Mi., 5. Dez. 2018 um 13:02 Uhr schrieb Wolf Fink <wfink at redhat.com>:
> >
> > As Tristan said, the infinispan bits shipped with WildFly and its configuration will not have all ISPN features. It might change over the time as there is no test which ensure that any feature beside those which are used from the WF container.
> > The configuration for the subsystem is different and will not allow all features.
> > Also if there is a plan to move to the supported products this is not supported!
> >
> > The best option is to use the infinispan modules and configure it in server-mode, in this case the cache lifecycle is bound to the WF instance and can be shared/injected to all deployed applications (sharing the cache between application in embedded mode will not work)
> > Note that you might use the infinispan endpoints here, but if there is a plan to use the products the use of endpoints is not supported (as it will make WF a hybrid server for both)
> >
> > Wolf
> >
> > On Wed, Dec 5, 2018 at 12:17 PM Tristan Tarrant <ttarrant at redhat.com> wrote:
> >>
> >> On 12/5/18 9:44 AM, Gunnar Morling wrote:
> >> > Hey,
> >> >
> >> > I was trying to configure and inject an Infinispan cache through CDI,
> >> > running on WildFly 14, using the Infinispan modules provided by the
> >> > server.
> >> >
> >> > While I'm not sure whether that's something supported or recommended,
> >> > I found this preferable over adding Infinispan another time as part of
> >> > the deployment. I couldn't find any recent info on doing this (would
> >> > love any pointers, though), so here's my findings, in case it's
> >> > interesting for others:
> >>
> >> You should not be using the Infinispan subsystem that comes with WildFly
> >> as its configuration capabilities are a bit limited, but the modules we
> >> supply:
> >>
> >> http://infinispan.org/docs/stable/user_guide/user_guide.html#infinispan_modules_for_wildfly_eap
> >>
> >> > Btw. I also couldn't find an example for configuring a cache through
> >> > jboss-cli.sh, perhaps that's something to consider, too?
> >>
> >> Yes, that should be added.
> >>
> >> Tristan
> >> _______________________________________________
> >> infinispan-dev mailing list
> >> infinispan-dev at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>
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