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Summary

MQTT Store and Forward allows data to be buffered locally at a client when connections are down to the MQTT Server infrastructure and deliver that data when the connection is restored. This feature is critical in most applications because if we lose connection to the MQTT Server we will lose data if it is not buffered locally.

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Additional Resources:

Ignition Video 10: Primary Host ID Setting

Ignition Video 12: Set Up Store-and-Forward System