IBM WebSphere MQ Multicast

IBM® WebSphere® MQ Multicast offers low latency, high fan out, reliable multicast messaging.

Multicast is an efficient form of publish/subscribe messaging as it can be scaled to a high number of subscribers without detrimental effects in performance. WebSphere MQ enables reliable Multicast messaging by using acknowledgements, negative acknowledgments, and sequence numbers to achieve low latency messaging with high fan out.

WebSphere MQ Multicast's fair delivery enables near simultaneous delivery, ensuring that no recipient gains an advantage. As WebSphere MQ Multicast uses the network to deliver messages, a publish/subscribe engine is not needed to fan-out data. After a topic is mapped to a group address, there is no need for a queue manager because publishers and subscribers can operate in a peer-to-peer mode. This allows the load to be reduced on queue manager servers, and the queue manager server is no longer a potential point of failure.