This is clustering strategy which can be used for by Tigase ACS - MUC component, which is recommended for installations with relatively few rooms but rooms itself having a lot of occupants - contains improvements over ClusteredRoomStrategy

Short description

In this strategy MUC rooms are persistent and each room is hosted on every node. Every node contains full list of rooms (as they are persistent). Room on each node has knowledge only about occupants which joined room on this node. If remote user has joined room on one node and then it’s packets are delivered by S2S to other node, then packets will be forwarded to node to on which user joined room. Packets from user are processed by node on which they joined to room and notifications about joining room, leaving room, change of presences or about new message are sent to all other nodes and those other nodes are responsible for delivering proper notifications to users which joined room on them.

This version contains improvements over the section called “ClusteredRoomStrategy” which leads to improved performance and reduced trafic over cluster connection due to changes in logic of processing packets.

Connection to cluster

Once node connects to a cluster then map of occupants and their rooms are synchronized with other nodes.

Disconnection from cluster

If node is disconnected from a cluster, then every other node will send "kick" stanzas to every occupant of every room hosted on disconnected node.


To enable this strategy you have to set class property of strategy bean within muc component to tigase.muc.cluster.ClusteredRoomStrategyV2.


muc () {
    strategy (class: tigase.muc.cluster.ClusteredRoomStrategyV2) {}