IoT-Technical-Guide
IoT Technical Guide is a comprehensive tutorial and learning resource for building high-performance IoT platforms and solutions from scratch. It covers IoT fundamentals, networking, algorithms, and data structures, while teaching key protocols including MQTT v3.1, v3.1.1, v5.0, CoAP, HTTP, Modbus, and OPC. The guide walks through architecture design, MQTT Broker setup, CoAP services, message queuing, data modeling, and database selection using PostgreSQL, MongoDB, and Kafka. It includes Spring Security with OAuth2, RuleEngine implementation, Docker deployment, and WebSocket integration, along with device shadow concepts, digital twins, and Protobuf for serializing data. A major component is a detailed source code analysis of ThingsBoard, the popular open-source IoT platform, helping developers learn advanced IoT concepts and pursue secondary development. The tutorial also compiles curated learning books, resources, and terminology glossaries covering Bluetooth, Zigbee, and communication protocols, aiming to p