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Snailclimb merged 1 commit into from
Feb 21, 2022
Merged

修复错别字 #1558

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2 changes: 1 addition & 1 deletion docs/high-performance/message-queue/rocketmq-intro.md
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Expand Up @@ -376,7 +376,7 @@ emmm，就两个字—— **幂等** 。在编程中一个*幂等* 操作的特

上面的同步刷盘和异步刷盘是在单个结点层面的，而同步复制和异步复制主要是指的 `Borker` 主从模式下，主节点返回消息给客户端的时候是否需要同步从节点。

- 同步复制： 也叫 “同步双写”，也就是说，**只有消息同步双写到主从结点上时才返回写入成功** 。
- 同步复制： 也叫 “同步双写”，也就是说，**只有消息同步双写到主从节点上时才返回写入成功** 。
- 异步复制： **消息写入主节点之后就直接返回写入成功** 。

然而，很多事情是没有完美的方案的，就比如我们进行消息写入的节点越多就更能保证消息的可靠性，但是随之的性能也会下降，所以需要程序员根据特定业务场景去选择适应的主从复制方案。
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