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|Oracle GlassFish Server Message Queue 4.5 Administration Guide|
Message Queue supports the use of broker clusters: groups of brokers working together to loprovide message delivery services to clients. Clusters enable a message service to scale its operations to meet an increasing volume of message traffic by distributing client connections among multiple brokers.
In addition, clusters provide for message service availability. In the case of a conventional cluster, if a broker fails, clients connected to that broker can reconnect to another broker in the cluster and continue producing and consuming messages. In the case of an enhanced cluster, if a broker fails, clients connected to that broker reconnect to a failover broker that takes over the pending work of the failed broker, delivering messages without interruption of service.
See the Chapter 4, Broker Clusters, in Oracle GlassFish Server Message Queue 4.5 Technical Overview for a description of conventional and enhanced broker clusters and how they operate.
This chapter describes how to configure and manage both conventional and enhanced broker clusters: