Which server hosting do I need in this particular situation? [closed]

I have a PHP file which retrieves data from a JSON file and outputs JSON data.
This PHP file will be called 1000 times an hour.

Is there a hosting provider which supports this?

Or do I need a CDN with a Cron Job which runs the PHP file a few times an hour and puts the JSON file on the CDN. Does something like this exists? Can anyone put me in the right direction?

Thanks!

Contacting hosting providers without any luck.