Not a CloudFlare user yet, but might have a good user case for it.
Currently client connections call a url, and then the url is re-written to where the static data actually is, and then they download it.
I am interested in using CloudFlare CDN to cache content from the url that holds the static data, nothing else. Is this possible? both the first url and the re written url are in the same domain, but their subdomain is different. I do not want to cache anything else.
Also, the extensions of the files in question are custom.