MQTT (Message Queuing Telemetry Transport) is a lightweight publish/subscribe messaging protocol designed for constrained networks and low-bandwidth devices. 🌐 It's widely used in IoT (Internet of Things) applications due to its efficiency and simplicity.

Key Features

  • 📡 Lightweight: Minimal overhead makes it ideal for devices with limited resources.
  • 📡 QoS Levels: Ensures reliable message delivery with 3 levels (0, 1, 2).
  • 📡 Publish/Subscribe Model: Decouples senders and receivers for scalable communication.
  • 📡 Retained Messages: Brokers can store messages for new subscribers.

Use Cases

  • 🏠 Smart Homes: Connecting sensors and actuators.
  • ⚙️ Industrial Automation: Real-time data monitoring.
  • 📵 Mobile Applications: Efficient data sync over unstable networks.

Quick Start Guide

  1. 📝 Install an MQTT broker (e.g., Mosquitto).
  2. 📝 Use an MQTT client library (e.g., Paho, AWS SDK).
  3. 📝 Publish and subscribe to topics using commands like mosquitto_pub and mosquitto_sub.

Related Resources

MQTT Protocol Architecture
MQTT QoS Levels