> - Undertow will hold requests until the deployment is done (so if you
> try and load a page while deployment is happening it could be a bit of a
> wait)
> - Remote EJB will hold requests until deployment is done
> - mod_cluster will not send availability messages until deployment is done

Isn't this what mod_cluster does on a per-deployment basis anyway? The
basic idea of mod_cluster is the LB isn't notified the context is
available on a backend server until it's....available.

At the moment it is sent when the Undertow service comes up. It is still possible that there could be other services (especially in a multi module EAR deployment) that have not come up yet.

In practice for a lot of deployments this window will be very small or even non existent, and the behavior will be basically indistinguishable.

Stuart