在实际运用中，嵌套和粒度之间应该有一个平衡。
In practical use, there should be a balance between nesting and granularity.
两种方法的权衡实际就是易用性和控制粒度的权衡。
The key trade-off between the two methods is ease of use versus granularity of control.
分析发布到域外部的应用程序功能时，会发现实际的服务是细粒度功能的结合。
When analyzing application functions to be exposed to the outside of a domain, one may find that the actual service is a combination of a finer grain functions.
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