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@@ -34,7 +34,7 @@
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Kafka、RocketMQ 等通过消费者组把两种模型结合起来：一条消息会发送给每个订阅它的消费者组，但在一个消费者组内只会被一个消费者消费。
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<div align="center"> <img src="pics/consumer-group.png" width="560px"/> </div><br>
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<div align="center"> <img src="pics/consumer-group.png" width="620px"/> </div><br>
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发布与订阅模式和观察者模式有以下不同：
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