how to exclude a file from appearing in the refile target cache?

[swedebugia]

Hi

I read:
https://orgmode.org/manual/Refile-and-Copy.html

But its unclear to me how to exclude a file from appearing in the
refile target cache.

My cache takes 13s to build and its too long for my taste. I have
archived all old notes now. I want to exclude my archive.org from the
refile targets. Is there a way to do that?

Cheers
swedebugia