目录一、概述二、集群消费三、广播消费一、概述 RocketMQ主要提供了两种消费模式：集群消费以及广播消费。我们只需要在定义消费者的时候通过setMessageModel(MessageModel.XXX)方法就可以指定是集群还是广播式消费，
Been working on this problem of collision detection and there appears to be 3 main approaches I could take:
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