existsObject not optimal

hi
I discovered that existsObject is doing a lot (too much) to return just a Bool. It checks the entry, decodes the object, etc... So if I use the cache to store large images, it would decode an image just to confirm that it exists in the cache
Isn't there a less expensive way to check for the presence of an object in the cache ?

Matthieu

Locate the existsObject entry point in the Cache repository and trace how it checks entries, decodes objects, and reports a Bool. Confirm the desired result with a large cached image: existence checks should avoid decoding while still returning whether the object is present; the issue names no file or test path.

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