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SendCallback sendCallback on Muck Rack

SendCallback sendCallback

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RocketMQ_rocketmq设置密码_秋至十二的博客-CSDN博客

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By Object payload, String hashKey, SendCallback sendCallback, SendCallbacksend Callback
| CSDN
核心概念 主要由四大部分组成： 1. Producer：生产者，可以集群部署。它会先和 NameServer 集群中的随机一台建立长连接，得知当前要发送的 Topic 存在哪台 Broke Master上，然后再与其建立长连接，支持多种负载平衡模式发送消息。 2. Consumer：消费者，可以集群部署。它也会先和 NameServer 集群中的随机一台建立长连接，得知当前要消息的 Topic 存在哪台 Broker Master、Slave上，然后它们建立长连接，支持集群消费和广播消费消息。 3. Broker：主要负责消息的存储、查询消费，支持主从部署，一个 Master 可以对应多个 Slave，Master 支持读写，Slave 只支持读。Broker 会向集群中的每一台 NameServer 注册自己的路由信息。 4.
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