回复: 回复：is it possible to configure FLUSH_TYPE by topic?

[shen hui <sh...@outlook.com>]

You can set the broker to SYNC. The message that needs to be replicated/flushed can be guaranteed with the method msg.setWaitStoreMsgOK(true); otherwise the message is returned just after append to master's commitLog. The default message is set to waitStoreMsgOK.
You can refer to common/src/main/java/org/apache/rocketmq/common/message/Message.java andstore/src/main/java/org/apache/rocketmq/store/CommitLog.java for details.
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发件人: 秦美杰 <me...@eques.com.cn>
发送时间: 2019年8月27日 14:39
收件人: users <us...@rocketmq.apache.org>
主题: 回复：is it possible to configure FLUSH_TYPE by topic?

Hey guys,

I have a RocketMQ cluster setup, it has 3 masters and 3 slaves, plus 2 name servers, all with flushDiskType and brokerRole set to ASYNC, because it's only used for message notification which requires no reliability guarentee.

Now, I plan to use RocketMQ to publish cache invalidation notification which is super important, and one single message lost is intolerant, so obiviously I should set both flushDiskType and brokerRole set to SYNC.

but it seems that there's no way to configure the forementioned options by topic, the only option RocketMQ offers is ALL or NOTHING.

I really don't want to setup an another RocketMQ cluster, is there anyone can shed some light on ?

Thanks in advance,

Best regards,

meijie.qin/秦美杰
移康智能科技（上海）股份有限公司

Shanghai Eques Technology Co., Limited

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