iamqq23ue commented on issue #3461:
URL: https://github.com/apache/rocketmq/issues/3461#issuecomment-961801219
thanks for the reply。In addition, I suggest that if only one node exists in
the deleger mode, this node can provide read services.
In this way, the requirements of disaster recovery can be met.
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发送时间: 2021年11月5日(星期五) 下午2:45
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主题: Re: [apache/rocketmq] Can rocketmq have one master corresponding to
two slaves? (Issue #3461)
This is the cold data problem。
For in-sync slave, the master loads data from page cache.
But for out-of-sync slave, the master needs to load data from disk, this
will be much slower than page cache.
If the incoming tps is large，the out of sync slave may never have the
chance to catch up with the master.
IMO，We may need to polish the cold data sync performance.
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