Message update interval limit / MQTT subscriptions

2 次查看（过去 30 天）
Martin Rechsteiner
回答： Vinod 2020-2-6
Hallo,
I have two ESP32 with MQTT subcriptions with PubSubClient and running indepenently from each other.
The first sends data to field 1,2,3. The other to field 4,5,6. Both to the same channel.
When I start both sometimes one can not write. Both ESP32 run independently and update every 60secs.
Question:
Does the Message update interval limit of 15sec apply also to the 3 simultaneous MQTT subscriptions?
Regards: Martin

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回答（1 个）

Vinod
Vinod 2020-2-6
With a free license, a channel can only be updated at most once every 15s. It does not matter if the updates are happening using the MQTT or REST API, or even a combination of the two. With a paid license that update rate is one update per channel per second.
The mental model is of a single channel per device. It appears you have a different use case -- can you describe more what you are trying to do, especially the use case for multiple devices updating the same channel?

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