当动态集群在自动模式下运行时，应用程序位置控制器将在管理员不直接参与的情况下停止一个集群成员。

When dynamic clusters are running in automatic mode, the application placement controller can bring down a cluster member without the direct involvement of an administrator.

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在这个拓扑中，显然一个数据中心的应用程序位置控制器无法利用其他数据中心中的空闲容量。

In this topology, it's obvious that the application placement controller in one data center will not be able to tap into idle capacity in the other data center.

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现在，控制器类是设计实现系统商业逻辑填充的一个或多个类的位置保持器。

For now, a controller class is a placeholder for one or more classes that would be fleshed out during design to implement the business logic of your system.

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