Java Reference
In-Depth Information
Web application clustering
Web application clustering involves two aspects: setting up an HTTP load balancer and
telling WildFly to make the application's user sessions as HA. How to do the former de-
pends on what load balancer you would choose (
mod_cluster
is our suggested
choice—it is preconfigured and integrates with WildFly out of the box); the latter could not
be simpler—just add the
<distributable/>
tag to your application's
web.xml
file.
Whenever a node fails, the user's HTTP session will be handled by another one. If
everything goes well, the end user will not know that there was a failure—everything will
be handled behind the scenes.
Let's see how to action both these steps in concrete terms.
