How to bind multi-nodes' service to one app?

I deployed vcap into my vms. And successfully make it run in multi-host environment.

But I found when I expand a app to more than one instances (eg. 10 instances) , route compents distributes the requests to 10 DEAs. But cuz I only be able to bind one service to my app. So all the requsts are handle by the only one mysql service. You know, the DB always the bottleneck of one system.


Is any way to scale out the services layer? Because all the setting I done is by reading the vcap source code, so maybe something I miss?