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RocketMQ???????????????????????????????????????????RocketMQ???????????????????
RocketMQ??????????????????????????????????????Producer?Broker?Consumer?NameServer??????????????????????????
RocketMQ??????????????
NameServer
????Topic?????????Zookeeper???Broker???????????Producer
?????????Topic?????Producer?????????????????Broker
?????????????????Broker??Master?Slave?Master???????Slave???????Consumer
????????????????Consumer?????????????????RocketMQ?????????NameServer?Producer?Broker?Consumer???????????
NameServer
NameServer??????????????NameServer???Broker??????????Topic?????Broker
Broker?Master?Slave???Master????????????Slave???????Master?Slave??BrokerName?BrokerId???Producer
Producer?NameServer??????????????????Topic??????????Master?????Consumer
Consumer???NameServer?????????????????Topic???????Master?Slave??????????RocketMQ??????????????
Producer Group
???????????????Producer???Producer Group??????Topic???????????Consumer Group
???????????????Consumer???Consumer Group??Consumer???????????????Topic?Tag
Topic??????????Tag??????????RocketMQ????????????????Message Queue
RocketMQ?????????????????Topic??????Message Queue??????????????????RocketMQ?? CommitLog?ConsumeQueue?IndexFile ?????????????
CommitLog??????????????????????????????????Offset?????????CommitLog????????ConsumeQueue?
ConsumeQueue????????????????????ConsumeQueue??????30????????????
IndexFile?????????????Offset?Key??????RocketMQ??Hash????????????????
RocketMQ????????????????
????
?????????????????????????????????????????
?????????????????????????????????????????????RocketMQ???????????
RocketMQ??????????????????????????????IO???????????
RocketMQ??MappedFile?FileChannel??????????????????????????????????????????
MappedFile?RocketMQ??????????????????????????MappedByteBuffer?FileChannel???????
CommitLog???????ConsumeQueue???????????????????????
RocketMQ???????????????IOPS?SSD????????HDD????????
RocketMQ??????????????????????????????????NameServer?Producer?Broker?Consumer??????????????RocketMQ?????????CommitLog?ConsumeQueue?IndexFile????????????????????????????RocketMQ??????????????
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