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缓存组件采用了接口化设计，提供了Adapter
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接口，任何实现了Adapter
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gcache.Cache对象结构定义如下：
接口的对象均可注册到缓存管理对象中，使得开发者可以对缓存管理对象进行灵活的自定义实现和扩展。
接口定义
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Adapter接口定义如下：
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dev/github.com/gogf/gf/v2/os/gcache#Adapter
注册接口实现
通过该方法将实现的adapter应用到对应的Cache对象上：
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// |
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SetAdapter |
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changes the adapter for |
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this cache.
// Be very note that, this setting function is not concurrent-safe, which means you should not call
// this setting function concurrently in multiple goroutines.
func (c *Cache) SetAdapter(adapter Adapter) |
具体示例请参考 缓存管理-Redis缓存 章节。
获取接口实现
通过该方法获取当前注册的adapter接口实现对象上：
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// GetAdapter returns the adapter that is set in current Cache |
适配器的注册方法：
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.
func (c *Cache) |
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GetAdapter( |
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) Adapter |
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