Needs simple clarity

[jboss360]

How is multicasting and Unicasting  replication in Jboss will work theoretically in HA ? .I am aware of Multicasting and Unicasting in Networking terminology. Please any one can help and give me some info to understand them simply

[rhn-support-abhati]

Hi,

In JBoss/Wildfly you can create clusters either using UDP or TCP protocol.

UDP protocol uses a broadcasting mechanism(e.g. Radio) which would broadcast the message to all the nodes in a UDP cluster.

In case of TCP cluster, only the defined node will create a cluster. For .e.g You have to define IP:PORT in your configuration and then the communication will take place only between the defined servers.

The main advantage of using UDP clustering is, you can add other nodes/servers dynamically in the cluster. Make sure your multicast network is properly configured.

For more information, please refer High Availability Guide

[rhusar]

Well, with the default configuration using Infinispan's distribution cache mode and number of owners set to 2, there is very little benefit to using multicasting.