public void flushPendingChanges( Node.UniqueIdentifier nodeUniqueId )
    {
        flushPendingChanges(nodeUniqueId, ClusterManager.isClusteringEnabled());
    }
Cache for recently accessed published items.
xmppserver/src/main/java/org/jivesoftware/openfire/pubsub/CachingPubsubPersistenceProvider.java