Expand locations for cache entries

[hovind]

I'm confused about how to dynamically set cache_entries. There may be another way of doing this that I'm not aware of. Please let me know if that's the case, so I can close this draft.

If adding this feature is wanted by the community, I will draft up some changes to the documentation to reflect the new behavior. However, I wanted to gauge the interest and solicit some feedback before doing so.

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