A Blog about MQTT
1)What is MQTT? MQTT is a publish-subscribe (pub/sub) protocol that enables devices to exchange messages through a central broker. Unlike traditional request-response protocols like HTTP, MQTT decouples senders (publishers) and receivers (subscribers), making it ideal for scenarios where network resources are limited or devices operate intermittently. 2)What are the key components of MQTT: Broker: The server that manages message routing (e.g., Eclipse Mosquitto, HiveMQ). Publisher: A device that sends data to a topic (e.g., a temperature sensor). Subscriber: A device that receives data by subscribing to a topic (e.g., a cloud dashboard). Topic: A hierarchical string (e.g., factory/zone1/temperature) that categorizes messages. 3)What are the advantages of MQTT? Lightweight Footprint: MQTT’s minimal header size (2 bytes) and efficient binary payload make it ideal for constrained devices. For example, a "Hello World" message in MQTT is...