物联网云消息队列 MQ 的相关内容

[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...

[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。

RocketMQ 5.0学习资料

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Apache RocketMQ：如何从互联网时代演进到云

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带您快速了解阿里云消息队列RocketMQ 5.0版

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「物联网技术」MQTT 常见问题和5个代理的基本基准测试

MQTT是什么?MQTT代表MQ遥测传输。它是一种发布/订阅、极其简单和轻量级的消息传递协议，专为受限设备和低带宽、高延迟或不可靠的网络设计。设计原则是尽量减少网络带宽和设备资源要求，同时也试图确保可靠性和某种程度的交付保证。这些原则也使得协议成为新兴的“机器对机器”(M2M)或“物联网”世界的理想...

「物联网技术」MQTT Broker/Server 列表

此页尝试记录各种MQTT服务器(代理)支持的特性。这是特定于他们的MQTT支持的。这些服务器中有许多具有比MQTT更广泛的功能。能力键✔意思是:支持✘的意思是:不支持吗?意思是:未知§意思是:看到局限性rm的意思是:路线图(计划好的)已弃用或停止使用的软件/服务2lemetry被亚马逊AWS秘密收购...

「物联网架构」MQTT 传感器数据流异常检测的深度学习KSQL UDF

用于传感器分析的KSQL UDF。利用KSQL的新的API特性，用Java轻松地构建UDF / UDAF函数，从而使用Apache Kafka进行连续流处理。用例:联网汽车——使用深度学习的实时流媒体分析。我为混合机器学习基础设施构建了一个场景，利用Apache Kafka作为可伸缩的中枢神经系统。...

「物联网架构」HiveMQ和Apache Kafka流式处理IoT数据和MQTT消息

Apache Kafka是一个实时流平台，在大大小小的组织中得到了广泛的采用。Kafka的分布式微服务架构和发布/订阅协议使得它非常适合在企业系统和应用程序之间实时移动数据。据统计，超过三分之一的财富500强公司正在使用Kafka。在Github上，Kafka是最受欢迎的Apache项目之一，有超过...

「物联网技术」EMQX 的MQTT 和 Kafka 对比

MQTT与Kafka完全不同。MQTT是由OASIS技术委员会的成员（大多数是IBM和Microsoft的高级工程师）开发的协议和技术标准。Kafka是LinkedIn首次实现的开源流平台。2011年开放源码后被Apache孵化器孵化，成为Apache软件基金会的顶级项目。两者之间唯一的联系是它们都...

【物联网架构】为什么IoT开发人员困惑MQTT和CoAP？

最近在Exadel，我们遇到了一个有趣的挑战，对物联网的开发者。因为IoT应用程序获得了如此多的动力，所以有越来越多的选择如何开发它们。对于设备通信，两个专门的竞争协议脱颖而出：消息队列遥测传输（MQTT）和约束应用协议（CoAP）。它们都设计为轻量级，并仔...

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