hepyu commented on issue #614: How much memory should we use for broker and namesrv when using cluster mode? URL: https://github.com/apache/rocketmq/issues/614#issuecomment-448496637 > namesrv manage broker info and topic info and store all info in the memory,so i think 16g mem is more > suitable,but if your topic and queue are relatively few,8g is OK。for 3 broker, i think 2 namesrv is OK. > and only master may lost messages. I have some confused, the namesrv just save broker and topic info, I think they cost memory little, is 16G is too large? I think even 8G is also too large, is this right? About lost message when only using master, is this happen only when master disk is wrong? I mean if we don't consider the disk broken, the rocketmq won't lose message, is this right? If we use slave feature, is it will have some influences about the qps? And How big is the impact? > so 2M - 2S is adviced。 > There are some configuration we are using now > 2 namesrv: 8cpu and 16g > 4 cluster,per cluster have 2 master and 2slave. > broker : 2M-2S. > 3E messages a day. And what about the qps? 3Q~
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