I’ve been exploring using MQTT for integrating device and applications.
Docker Compose to run Node-RED and Mosquitto
Installing and configuring the Mosquitto MQTT broker
Comparison of MQTT Brokers
MQTT and AMQP 1.0 interoperability in RabbitMQ
Generate Azure IoT Hub SAS token for MQTT protocol authentication
MQTT with RabbitMQ and Node-RED
MQTT in Node-RED with Docker