分布式消息队列消息队列RocketMQ版工作原理应用的相关内容

分布式消息队列RocketMQ工作原理与应用（八）

第 4 章 RocketMQ应用七、消息发送重试机制1 说明Producer对发送失败的消息进行重新发送的机制，称为消息发送重试机制，也称为消息重投机制。对于消息重投，需要注意以下几点：生产者在发送消息时，若采用同步或异步发送方式，发送失败会重试，但oneway消息发送方式发送失败是没有重试机制的只...

分布式消息队列RocketMQ工作原理与应用（七）

第 4 章 RocketMQ应用四、事务消息1 问题引入这里的一个需求场景是：工行用户A向建行用户B转账 1 万元。我们可以使用同步消息来处理该需求场景：工行系统发送一个给B增款 1 万元的同步消息M给Broker消息被Broker成功接收后，向工行系统发送成功ACK工行系统收到成功ACK后从用户A...

分布式消息队列RocketMQ工作原理与应用（五）

第 3 章 RocketMQ工作原理七、消费幂等1 什么是消费幂等当出现消费者对某条消息重复消费的情况时，重复消费的结果与消费一次的结果是相同的，并且多次消费并未对业务系统产生任何负面影响，那么这个消费过程就是消费幂等的。幂等：若某操作执行多次与执行一次对系统产生的影响是相同的，则称该操作是幂等的。...

分布式消息队列RocketMQ工作原理与应用（四）

第 3 章 RocketMQ工作原理四、消息的消费消费者从Broker中获取消息的方式有两种：pull拉取方式和push推动方式。消费者组对于消息消费的模式又分为两种：集群消费Clustering和广播消费Broadcasting。1 获取消费类型拉取式消费Consumer主动从Broker中拉取消...

分布式消息队列RocketMQ工作原理与应用（三）

第 3 章 RocketMQ工作原理一、消息的生产1 消息的生产过程Producer可以将消息写入到某Broker中的某Queue中，其经历了如下过程：Producer发送消息之前，会先向NameServer发出获取消息Topic的路由信息的请求NameServer返回该Topic的路由表及Brok...

分布式消息队列RocketMQ工作原理与应用（二）

第 2 章 RocketMQ的安装与启动一、基本概念1 消息（Message）消息是指，消息系统所传输信息的物理载体，生产和消费数据的最小单位，每条消息必须属于一个主题。2 主题（Topic）Topic表示一类消息的集合，每个主题包含若干条消息，每条消息只能属于一个主题，是RocketMQ进行消息订...

分布式消息队列RocketMQ工作原理与应用（一）

第 1 章 RocketMQ概述一、MQ概述1 、MQ简介MQ，Message Queue，是一种提供消息队列服务的中间件，也称为消息中间件，是一套提供了消息生产、存储、消费全过程API的软件系统。消息即数据。一般消息的体量不会很大。2 、MQ用途从网上可以查看到很多的关于MQ用途的叙述，但总结起来...

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更新时间 2023-05-10 15:05:08

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