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# Cache Attributes

Attributes for the texture cache.

## Topics

### Constants

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

By default, textures will age out after one second. Setting a maximum texture age of zero will disable the age-out mechanism completely. The [`CVOpenGLESTextureCacheFlush(_:_:)`](/documentation/CoreVideo/CVOpenGLESTextureCacheFlush(_:_:)) function can be used to force eviction in either case.


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