No additional configuration for collocation is required if using content based routing.
如果使用基于内容的路由，则并置不需要额外的配置。
Thus content based routing helps the subscribers get the most of those messages that they really need.
因此，基于内容的路由能帮助订阅者从中获得真正需要的大部分消息。
These expressions can be used to quickly transform the current message, construct new messages and do content based routing.
我们可以使用这些表达式快速转换当前的消息、构造新的消息以及进行基于内容的路由。
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