ClusterMembershipEvent A base class for events related to cluster membership, raised when nodes join and leave the cluster. 
ClusterNodeAddedEvent Raised when a new node joins the cluster. 
ClusterNodeEvent A base class for events related to the cluster. 
ClusterNodeRejoinedEvent Specialization of ClusterNodeAddedEvent that is raised when a node reconnects to the current node. 
ClusterNodeRemovedEvent Raised when an existing node leaves the cluster.