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Heartbeats

Each active member of a fault tolerance group broadcasts a heartbeat signal to the other group members. The heartbeat signal is a regular, periodic stream of heartbeat messages. The heartbeat signal indicates that the member is still active.

When a process joins a fault tolerance group, it specifies its heartbeat interval as a parameter. This interval governs a repeating timer; each time the heartbeat interval elapses, Rendezvous fault tolerance software publishes a heartbeat message.

To determine the correct value for the heartbeat interval, see Step 4: Choose the Intervals.

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