if it's not part of the default cached extensions: https://developers.cloudflare.com/cache/concepts/
if it's not part of the default cached extensions: https://developers.cloudflare.com/cache/concepts/default-cache-behavior/#default-cached-file-extensions (in this case, looks like it has no extension), it'll only be able to be cached if there's a page or cache rule marking it as eligible for cache
Cloudflare Docs
Cloudflare respects the origin web server’s cache headers in the following order unless an Edge Cache TTL cache rule overrides the headers. Refer to …
