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rocketmq-source-doc's Introduction

Apache RocketMQ 个人注解

阅读前思考

怎么去实现一个消息队列,需要考虑什么

  • 三个部分

    • 消息的生产者
    • 消息的消费者
    • 消息broker
  • 生产者的能力

    • 莫过去与broker建立通信,之后发送消息即可
    • 发送消息的过程中是否需要考虑负载均衡的问题,如果broker是集群,如何选取目标
    • 如果broker是集群,怎么获取broker的所有节点信息
  • broker的能力

    • 存储消息,如何保证消息的可靠性。怎么去存储,设计什么数据结构去做索引,不可能没有索引,每次都去遍历吧
    • 高可用,高可用的算法是什么,如果一个broker宕机了,会不会影响整个集群的工作
    • broker自身怎么保证消息幂等。
  • 消费者的能力

    • 从broker拉取消息,同样需要考虑,怎么获取所有broker的信息
    • 同一个消费组的消费者,只能有一个消费clustering的消息,这个是怎么维护的。用什么数据结构,高效吗
  • 整体

    • 网络通信的模型是什么,为什么要用这个模型

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