But this creates a problem — what if an object in the older generation references a younger object, which is not reachable through any other chain of references from a root?
但是这也带来一个问题——如果更老一代中的对象引用一个不能通过从根开始的所有其他引用链到达的更年轻的对象该怎么办？
Also, if a target endpoint is not reachable by the mediator, then the mediator typically provides a durability service to help ensure the message is eventually delivered.
同样，如果中介无法达到目标端点，则中介通常会提供耐久性服务来帮助确保消息将最终交付到目标位置。
The Gateway does not route, it's a static link which only changes if the configured Dispatcher is not reachable.
Gateway并不负责路由，它是一个静态链接，只在已配置的Dispatcher无法达到时更改。
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