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设计背景消息中间件的本身定义来考虑，应该尽量减少对于外部第三方中间件的依赖。一般来说依赖的外部系统越多，也会使得本身的设计越复杂，采用文件系统作为消息存储的方式。RocketMQ存储机制消息中间件的存储一般都是利用磁盘，一般是使用机械硬盘，但机械硬盘的速度比访问内存慢了n个数量级，一款优秀的消息中间...

【Alibaba中间件技术系列】「RocketMQ技术专题」Broker服务端自动创建topic的原理分析和问题要点指南

前提背景使用RocketMQ进行发消息时，一般我们是必须要指定topic，此外topic必须要提前建立，但是topic的创建（自动或者手动方式）的设置有一个开关autoCreateTopicEnable，此部分主要会在broker节点的配置文件的时候进行设置，运行环境中会使用默认设置autoCrea...

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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【Alibaba中间件技术系列】「RocketMQ技术专题」带你一起去探索RocketMQ服务架构的线程模型分析

前言介绍RocketMQ 是个消息服务器，也是个网络服务器。接下来我们将从网络 IO 模型，线程模型，看看 RocketMQ 是如何设计的。IO 模型RocketMQ 使用了 Netty 作为网络通信框架，自然而然使用了 Reactor 模型，或者说 Select 模型、Epoll 模型。即一个线程...

【Alibaba中间件技术系列】「RocketMQ技术专题」RocketMQ消息发送的全部流程和落盘原理分析

前言介绍RocketMQ目前在国内应该是比较流行的MQ 了，目前本人也在公司的项目中进行使用和研究，借着这个机会，分析一下RocketMQ 发送一条消息到存储一条消息的过程，这样会对以后大家分析和研究RocketMQ相关的问题有一定的帮助。技术范围分析的总体技术范围发送到存储，本文的主要目的是主要是...

【2021年遇到最头疼的Bug】【Alibaba中间件技术系列】「RocketMQ技术专题」Broker配置介绍及发送流程、异常(XX Busy)问题分析总结

背景介绍公司最近年底要对系统做一次大的体检，所以是不测不知道，一测吓一跳啊，出现了很多问题，其中最恶心的问题要数我们的ROCKETMQ消息队列的问题了，大家都知道消息队列是作为流量削峰的主要手段，负责系统健壮性和压力的最佳手段，谁知道，它竟然“生病”了，干不动活了。问题现...

【Alibaba中间件技术系列】「RocketMQ技术专题」让我们一起实践一下RocketMQ服务及其控制台安装指南

前提条件下载地址：前往 rocketmq.apache.org/release_not… ，下载 Binary 文件即可，例如： RocketMQ 4.5.1的下载地址系统要求64位操作系统，生产环境建议Linux/Unix/MacOS（Windows操作系统安装说明详见 Windows操作系统安装...

【Alibaba中间件技术系列】「RocketMQ技术专题」让我们一起探索一下DefaultMQPullConsumer的实现原理及源码分析

前提介绍在RocketMQ中一般有两种获取消息的方式，一个是拉(pull，消费者主动去broker拉取)，一个是推(push，主动推送给消费者)，在上一章节中已经介绍到了相关的Push操作，接下来的章节会介绍Pull操作方式的消费机制体系。DefaultMQPullConsumerDefaultMQ...

【Alibaba中间件技术系列】「RocketMQ技术专题」让我们一起探索一下DefaultMQPushConsumer的实现原理及源码分析

RocketMQ的前提回顾RocketMQ是一款分布式、队列模型的消息中间件，具有以下特点：能够保证严格的消息顺序提供丰富的消息拉取模式高效的订阅者水平扩展能力实时的消息订阅机制亿级消息堆积能力为什么使用RocketMQ强调集群无单点，可扩展，任意一点高可用、水平可扩展海量消息堆积能力，消息堆积后写...

【Alibaba中间件技术系列】「RocketMQ技术专题」让我们一起实践RocketMQ的服务搭建及配置操作

RocketMQ是一款分布式、队列模型的消息中间件，具有以下特点1、能够保证严格的消息顺序2、提供丰富的消息拉取模式3、高效的订阅者水平扩展能力4、实时的消息订阅机制5、亿级消息堆积能力搭建一个双节点的RocketM环境背景：虚拟机：vmware12操作系统：centos6.5内存：1G RAM硬盘...

【Alibaba中间件技术系列】「RocketMQ技术专题」小白专区之领略一下RocketMQ基础之最！

RocketMQ的定位RocketMQ是一款快速地、可靠地、分布式、容易使用的消息中间件，由Alibaba开发，其前身是 Metaq，Metaq 可以看成是linkedin的Kafka（scala）的java版本，并对其增加了事务的支持。RocketMQ的定义RocketMQ为Metaq3.0，相比...

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