当需要进一步减少调用的数量时，可以在调用应用程序中适当采用高速缓存技术。
When you need to reduce the number of calls further, you can employ caching techniques where applicable in the calling application.
我们采用的技术将把整个问题域分离成更易管理的应用程序，每一个都有自己的 PIM。
The technique we employed was to split the overall problem domain into more manageable applications, each of which has its own PIM.
因此，我们将采用一个简单的银行应用程序来介绍这种技术。
Therefore, our scenario will use a simple bank application to introduce this technology.
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