Translations:MQTT/136/en

The principle of operation of a message queue

Drivers of internal functions, external devices, web interface, rules system work via the MQTT message queue

The MQTT message system is based on the following principle:

• there is a hierarchical system of "topics" (like on the Internet forums)
• clients (in the case of Wiren Board - device drivers and web interface) can write messages and read from these topics
• to monitor the changes of the desired topic (for example, temperature on the sensor), the client can "subscribe" to it - then it will receive all messages in this topic.

For a full description of topics and subscriptions, see http://mosquitto.org/man/mqtt-7.html.http://mosquitto.org/man/mqtt-7.html.