MQTT - Mosquitto MQTT Broker setup on the Ubuntu 20.04
I quoted a lot from " How to Install and Secure the Mosquito MQTT Messaging Broker on Ubuntu 18.04 ". MQTT is a machine-to-machine messaging protocol, designed to provide lightweight publish/subscribe communication to “Internet of Things” devices. It is commonly used for geo-tracking fleets of vehicles, home automation, environmental sensor networks, and utility-scale data collection. Mosquitto is a popular MQTT server (or broker, in MQTT parlance) that has great community support and is easy to install and configure. MQTT is often thought of only as IoT platform and applied to devices such as Arduino and many sensors. However, Message Queue (MQ) is a protocol that has long been used to deliver asynchronous messages. It can be applied to various applications for asynchronous message delivery. The Public, Subscribe model for a particular topic can also be useful for implementing chat rooms, etc. There are rumors that Facebook's messenger actually used Mosquito.(This is ...