With some implementations of the singleton, you allow writers of subclasses to override methods polymorphically, something not possible with static methods.

最后，在单例模式的一些实现方式中，单例类的子类能够动态地重载方法，这是静态方法所不能办到的。

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You can access methods on singleton objects similar to how you would call static methods.

您可以像调用静态方法一样访问单例对象的方法。

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You will design the object as a singleton (this design pattern will limit this object to a single instance) and have the appropriate retrieve and store methods to manipulate the cache.

您将把对象设计为一个单子实例 （singleton）（这个设计模式将把这个对象限制在一个单个实例中）并使用合适的检索和存储方法对高速缓存进行操作。

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