MQTT
MQTT or Message Queing Telemetry Transport is the leading communication protocol for Industry 4.0
MQTT is a TCP/IP machine-to-machine/IoT communication protocol. It is an ultra light, open source, publish/subscribe communication model, which is also very easy to implement. It is very useful in applications where low code footprint, low bandwidth consumption low power consumption and reliability in data distribution are important
Send data directly to the client
Publish/subscribe is an alternative to the traditional HTTP client-server model, where the client communicates directly with the endpoint. The difference is that in the publish/subscribe model, the client does not extract data from the server, but the server sends it to the client in the event of a change.
A reliable TCP connection is required for communication. If it is interrupted, the server can store data in a buffer, and the data is sent to client when connection is re-established.
Transmit messages from publishers to subscribers
The central communication point is the so-called MQTT broker, with the task of transmitting messages from publishers to subscribers.
Selects the appropriate subscriber based on the topics. Publishers have the task of sending messages to the broker with specified topic.
Transmission is event-driven, which means that data is transmitted at changes (or at time intervals).
Subscribers receive messages from MQTT broker only for the topics to which they are subscribed.
Get to know the main advantages of MQTT
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