消息队列RocketMQ版订阅-阿里云

[帮助文档] 调用OnsGroupSubDetail查看GroupID的订阅信息

查看Group订阅了哪些Topic，如果Group ID对应的消费者实例不在线则查不到数据。

[帮助文档] 调用OnsTopicSubDetail查看Topic的订阅信息

查看有哪些在线订阅组订阅了这个Topic。

[帮助文档] 如何使用Canal接入云消息队列RocketMQ版,实现MySQL数据库Binlog数据的变更处理

本文以MySQL数据库为例介绍如何使用Canal接入云消息队列 RocketMQ 版，实现MySQL数据库Binlog数据的变更处理。

[帮助文档] 订阅关系Subscription的原理架构

本文介绍云消息队列 RocketMQ 版中订阅关系（Subscription）的定义、模型关系、内部属性及使用建议。

阿里二面：RocketMQ同一个消费组内的消费者订阅量不同tag，会有问题吗？

面试官：同一个消费组内的消费者，如果订阅了相同的 topic，但是订阅的 tag 不一样，会有什么问题吗？我：会出现丢消息的情况。面试官：能详细说一说吗？我：RocketMQ 要求同一个消费组内的消费者必须订阅关系一致，如果订阅关系不一致，会出...

RocketMQ Binder集成消息订阅

RocketMQ Binder集成消息订阅AbstractMessageChannelBinder类中提供了创建MessageProducer的协议，在初始化Binder的时候加载createConsumerEndpoint方法RocketMQMessageChannelBinder完成Rocket...

RocketMQ为什么要保证订阅关系的一致性？

前段时间有个朋友向我提了一个问题，他说在搭建 RocketMQ 集群过程中遇到了关于消费订阅的问题，具体问题如下：然后他发了报错的日志给我看：the consumer's subscription not exist我第一时间在源码里找到了报错的位置：org.apache.rocketmq.brok...

RocketMQ，同一个topic下是否可以通过不同的tag来进行订阅吗？

针对以上问题，有两个场景：使用阿里云的云服务器的RocketMQ和使用自己搭建的RocketMQ。但无论采用这两种的任何一种，都是可以在同一个topic下，通过tag来进行业务区分的。网上有很多分析相关使用方式的文章，虽然分析的结果都是“不可以”，但我们可以通过其他的一些方案来进行解决。自主搭建的R...

RocketMQ所提及的事件的订阅和触发具体内容是什么样的？

RocketMQ 实战(四) - 订阅机制和定时消息

1 RocketMQ的发布订阅1.1 基本概念发布订阅模式又叫观察者模式，它定义对象间的一种一对多的依赖关系，当一个对象的状态发生改变时，所有依赖它的对象都将得到通知。RocketMQ的消息订阅分为两种模式Push模式 (MQPushConsumer) : Broker主动向消费者推送Pull模式...

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更新时间 2024-02-28 13:52:48

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