MQTT Logger captures MQTT messages and saves them into the database.
MQTT (originally an initialism of MQ Telemetry Transport) is a lightweight, publish-subscribe network protocol that transports messages between devices. The protocol usually runs over TCP/IP, however, any network protocol that provides ordered, lossless, bi-directional connections can support MQTT. It is designed for connections with remote locations where resource constraints exist or the network bandwidth is limited.
MQTT is used for communication between IoT devices such as smart switches or lamps. MQTT is also used for smart home management.