MQTT, message queues telemetry transmission protocol is based on the publish / subscribe communication protocol Lightweight Construction and TCP / IP protocol.
excellent:
- At minimal bandwidth limited code and remote devices to provide a reliable real-time messaging service
- Low cost, low bandwidth
Publisher Publish, subscribers Subscribe, mqtt also known as a proxy server Broker
MQTT transmission of content into topics Topic and load payload
- Topic, can be understood as the type of message, the subscriber subscription (Subscribe), the content of the message will receive the topic (payload)
- payload, can be understood as the content of the message, the subscriber is content specific to be used.