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A master/slave topology defines an initial master broker and one or more initial slave brokers. When the master broker fails, one of the slave brokers starts up and takes over, becoming the new master broker. Clients using the failover protocol can reconnect to the new master broker and resume processing as normal.

Slave brokers have access to all messages sent to the master broker. Whether all messages are replicated from the master broker to the slaves depends on whether or not the topology includes a shared message store.

For details, see the Fault Tolerant Messaging.

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