WildFly clustering

Clustering is available in WildFly out of the box. There is no all-in-one library that deals with clustering, but rather a set of libraries that cover different kinds of aspects.

The following diagram shows the basic clustering architecture adopted by WildFly:

WildFly clustering

The backbone of JBoss clustering is the JGroups library, which provides communication between members of the cluster using a multicast transmission.


Multicast is a protocol where data is transmitted simultaneously to a group of hosts that have joined the appropriate multicast group. You can think about multicast as a radio or television streaming where only those tuned ...

Get Java EE 7 Development with WildFly now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.