Cache same file from different subdomain

I have multiple sub-domains all pointed at the same origin server
Each subdomain can fetch the same set of files e.g.
https://d1.domain.com/a/b/c/file.mp4
https://d2.domain.com/a/b/c/file.mp4

Since in fact the file is the same, will the cache find it and treat it as already cached, or will it cache the file per-sub-domain

It’s considered as a different cache

The host and path are both part of the default cache key used by Cloudflare to match resources, so those two URLs will be cached seperately. Enterprise customers can create custom cache keys using Page Rules to overcome this.

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