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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2018/03/28 06:47:28 UTC

[GitHub] gaoyf commented on issue #249: master-slave sync model performance improve

gaoyf commented on issue #249: master-slave sync model performance improve
URL: https://github.com/apache/rocketmq/issues/249#issuecomment-376779981
 
 
   我理解的 `SYNC_MASTER` 是同步双写，即，**消息同步写给slave才算成功，消息发送方需要根据返回状态决定消息是否重发**。
   而你 @iamzhoug37 所说的改进，只是主发送线程不再等待同步消息给slave的状态，这样消息发送方就不知道是否同步成功了。
   如果你不在乎是否同步给slave，只在乎是否写入本地硬盘，应该用`flushDiskType=SYNC_FLUSH brokerRole=ASYNC_MASTER`模式。
   这个存储层高可用我已经进行过分析了，参考我的分析：https://blog.csdn.net/a417930422/article/details/52585204
   另外咨询你一下，你的日志解析的图使用什么工具？多谢

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