Github user Jaskey commented on the issue: https://github.com/apache/incubator-rocketmq/pull/138 @lyy4j 1. I will still suggest resuing ConsistentHashRouter since it has a good enough abstraction which will make your selector much cleanner and easier as well as extensible(say specified virtual node nums, hash funtions) 2. I will suggest we expose a more friendly interface for user to use, for example , just let user to implement a shardingKey(MessageQueue q) method, the `select` method should be hidden since it is not friendly enough in this case IMO
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