Sun Java System Message Queue 4.3 Technical Overview

Message Service Availability

In addition to providing for message service scalability, broker clusters also provide for message service availability. If one broker in a cluster fails, then other brokers in the cluster are available to continue to provide messaging services to client applications.

Message Queue supports two clustering models that provide different degrees of availability:

Note –

You can also achieve data availability in a conventional cluster by using Sun Cluster software. Sun Cluster software replicates broker data and provides for a hot standby broker to take over the pending work of a failed broker. For details, see the documentation for Sun Cluster Data Service Agent for Message Queue.