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# Cache Attributes

Attributes specifying texture cache behavior, used with the [`CVMetalTextureCacheCreate(_:_:_:_:_:)`](/documentation/CoreVideo/CVMetalTextureCacheCreate(_:_:_:_:_:)) function.

## Topics

### Constants

[`let kCVMetalTextureCacheMaximumTextureAgeKey: CFString`](/documentation/CoreVideo/kCVMetalTextureCacheMaximumTextureAgeKey)

The length of time, in seconds, before the cache is automatically evicted.

[`let kCVMetalTextureUsage: CFString`](/documentation/CoreVideo/kCVMetalTextureUsage)

The set of options that define how you can use a texture on the GPU.


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