MQTT

• Intro
• Publish Subscribe Pattern
• Messages
• Client, Broker and Connection Establishment
• Publish, Subscribe and Unsubscribe
• Topics and Best Practices
• QoS Levels
• Persistent Session and Queuing Messages
• Retained Messages
• Last Will and Testament
• Keep Alive and Client Take-Over
• MQTT over WebSockets
• Scaling
• Security
• MQTT 5.0
• Libraries
• MQTT - SN
• Paho Client
• MQTT vs HTTP