be in active service

Some testing may need to be performed in production systems, which use the service as if it were active.

有些测试可能需要在生产环境中执行，此环境会将服务作为活动服务处理。

In this example, switch 2 ingress traffic will be redirected to the active service module in switch 1, as switch 1 ingress traffic will be sent to that active service module too.

在这个例子中，交换机2的进入流量将被重定向到交换机1中活动的服务模块，作为交换机1的进入流量也将被送到这个活动模块。

Whenever Dispatchers look for an active instance of a particular service, the scope of that look-up will be the Server Group he is in.

只要Dispatchers查找具体服务的一个活动实例，则该查找的范围就是它所在的Server Group。