iot
Using retained messages for last-known state and a last will for presence
taught
Taught in
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Retained messages and last will
Connected Devices and the Internet of Things
Requires
- mqtt-qos-levels required
Required by
- Computing a shadow's delta from desired and reported state, with versions and an offline device required
- Publishing telemetry and handling commands from an ESP32 with the esp-mqtt client, non-blocking and reconnecting required
- Watching device health through heartbeats, metrics, logs and crash counts required
Local knowledge map
Local knowledge map
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Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.