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JetLinks Community is an open-source enterprise IoT platform built with Java, Spring Boot, WebFlux, Netty, Vert.x, Reactor, and related reactive technologies. It is designed to help teams quickly build IoT business systems without starting from a blank backend. The platform supports unified device modeling, unified device access, and centralized management across different device types, vendors, and communication protocols. It can connect devices through TCP, UDP, MQTT, HTTP, TLS, DTLS, and...

IoT Technical Guide is a Chinese-language learning repository for understanding how high-performance Internet of Things platforms are designed and built. It walks readers through the architecture, concepts, and engineering stack behind IoT systems instead of only listing isolated tools. The guide covers topics such as IoT market context, device models, ThingsBoard source-code learning, MQTT broker setup, CoAP services, message peak shaving, data modeling, and database selection. It is...

MQTT is a Chinese translation of the OASIS MQTT 3.1.1 protocol specification for developers working with messaging, machine-to-machine systems, and the Internet of Things. It explains MQTT as a lightweight client-server publish-and-subscribe transport designed for constrained devices and networks. The documentation covers protocol concepts, control packet formatting, operational behavior, security, WebSocket transport, and conformance requirements. Individual chapters describe connection,...