Broker Clusters

Message Queue supports the use of broker clusters: groups of brokers working together to provide message delivery services to clients. Clusters enable a Message Queue service to scale messaging operations by distributing client connections among multiple brokers. Because a cluster consists of multiple brokers, the cluster helps protect against individual broker failure. Two cluster models provide different levels of message service availability.

This chapter discusses the architecture and internal functioning of broker clusters. It covers the following topics:

• Cluster Models

• Cluster Message Delivery

• Conventional Clusters

• Enhanced Clusters

• Cluster Models Compared

• Cluster Configuration