Lazy Deployment

[bijoyjth]

Hello,

  Does JBoss support a lazy deployment feature? So, instead of deploying all the ear's in the deploy directory, it simply deploys the ear when a request comes for it?

Thanks,

Bijoy.

[wdfink]

No, deploy directory is scanned during start and periodical if hd-scanner is active

[alesj]

Does JBoss support a lazy deployment feature? So, instead of deploying all the ear's in the deploy directory, it simply deploys the ear when a request comes for it?

Well, the AS needs to know what's inside of the deployment.

For ears that's a lot of things that could trigger its usage, hence quite complex to support this.

We do have some support though, more on a classloading level.

See jboss-deployment.xml in http://community.jboss.org/wiki/JBoss5custommetadatafiles.

Otoh, for wars the trigger thing is easy -- first http request.

Afaik, we already do this for our admin console -- try browsing around a bit, imho there should be some wiki on this topic.

MC's state machine has On_Demand notion, which is currently supported for services.

But since there is a single abstract component model, this could be probably extended for deployments as well.

* http://java.dzone.com/articles/jboss-microcontainer-virtual-deployment-framework

* http://soa.dzone.com/articles/a-look-inside-jboss-microconta