This guide describes the clustering model, which allows the application to run on a group of servers.
The clustering module provides increased capacity and fault-tolerance. Clusters are auto-configuring, have no single point of failure, and provide nearly linear scalability as additional servers are added.
At the heart of the clustering module is a distributed cache powered by Oracle Coherence. This allows application state to be shared among cluster members. Servers can join and leave the cluster at will, and cluster node failures are transparently handled.