MQTT Essentials Series Overview

Introduction

• 11-part series designed to make you an expert in MQTT.
• New video every Monday (MQTT Monday).
• Topics include: basics, features, operations, and more.

Topics to be Covered

• What is MQTT?
  • Definition: Client-server published subscribed messaging transport protocol.
  • Characteristics: Lightweight, open, simple, easy to implement.
  • Ideal for constrained environments (IoT, machine-to-machine communication).
• Basic Concepts
  • Publish/subscribe model.
  • Clients and brokers.
• Operations
  • Connecting, packet-level operations, pings.
• Features
  • Retained messages.
  • Quality of service levels.
  • Last will and testament.
  • Persistent sessions.
• Exclusions
  • MQTT5 features will not be covered in this series, but a separate series is planned.

Historical Context

• Invention
  • Created in 1999 by Arlen Nipper (Archcom) and Andy Stanford Clark (IBM).
  • Initially developed for sensing and acting on oil pipelines.
• Key Requirements Identified
  1. Simple implementation.
  2. Quality of service data delivery.
  3. Lightweight and bandwidth efficient.
  4. Data agnostic.
  5. Continuous session awareness.
• Significance
  • Requirements align with modern IoT needs.

Timeline of MQTT Development

• 1999: MQTT was invented.
• 2010: Made available royalty-free by IBM and others.
• 2012: Release of the first version of the Mosquitto broker (popular MQTT broker).
• 2013: Innovation of HiveMQ for commercial settings.
• 2014: Official release of MQTT 3.1.1 as an ISO standard by OASIS Technical Committee.
• 2018: Official release of MQTT5.

Conclusion

• Focus of this series will be on MQTT 3.1.1 principles.
• Future series will cover MQTT5 features and security aspects.
• Next video will discuss MQTT characteristics and an overview of features.