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MQTT简介MQTT 可以简单看做一个网络协议，用于机器对机器的通信（与客户端到服务器的传输有点区别）。智能传感器、可穿戴设备和其他物联网（IoT）设备通常必须通过带宽有限的资源受限网络传输和接收数据。这些物联网设备使用 MQTT 进行数据传输，因为它易于实施，并且可以有效地传输物联网数据。MQTT...

[帮助文档] MQTT协议保留消息的概念、交互过程及使用场景

保留消息用于确保新订阅Topic的设备能及时收到最新状态的消息，即使消息在设备订阅之前发布。服务端向Topic发布消息时，如果消息携带保留标记（Reatin），物联网平台将会保存这个消息并实时发布给订阅者，后续订阅该Topic的设备都会收到保留消息。保留消息在MQTT 3.1.1标准中就已定义，阿里...

RocketMQ 5.0学习资料

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[帮助文档] MQTT协议遗嘱消息的概念、交互过程及使用场景

MQTT协议的遗嘱消息，用于在设备离线时向其他设备告知其已离线。如果设备异常断开且在一段时间内未重连，物联网平台会代为发送遗嘱消息。遗嘱消息在MQTT 3.1.1标准中已定义，阿里云物联网平台在MQTT 5.0接入时支持这个特性。本文为您介绍遗嘱消息的概念、交互过程及使用场景。

[帮助文档] NLB助力EMQ构建高性能企业级MQTT物联网接入平台

EMQ使用NLB实现亿级设备的并发管理，构建高性能、高可靠、低成本的企业级MQTT物联网接入平台。

物联网协议的王者：MQTT

你好，这里是网络技术联盟站。今天跟大家聊一下物联网协议中比较著名的协议：MQTT。让我们直接开始！什么是MQTT？英文全称：Message Quueuing Telemetry Transport中文术语：消息队列遥测传输协议一种适用于物联网设备之间通信的简单消息传递协议专为带宽受限的设备而设计采用...

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物联网常用协议：MQTT、CoAP、LwM2M、HTTP、LoRaWAN和NB-IoT

目录1、MQTT协议2、MQTT-SN协议3、CoAP协议4、LwM2M协议5、HTTP协议6、LoRaWAN协议7、NB-IoT协议物联网，即物的互联网，属于互联网的一部分。物联网将互联网的基础设施作为信息传递的载体，即现代的物联网产品一定是“物”通过某种方式接入了互联网，而“物”通过互联网上传/...

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