@Override
    public void doClusterTask(ClusterTask task, byte[] nodeID) {
        throw new IllegalStateException("Cluster service is not available");
    }
CacheFactoryStrategy for use in Openfire. It creates and manages local caches, and it's cluster
related method implementations do nothing.

@see Cache
@see CacheFactory
xmppserver/src/main/java/org/jivesoftware/util/cache/DefaultLocalCacheStrategy.java