Can you configure a CDN to cache pages based on the browser language?

Question

Many websites do not have the language or locale set in the URL string. They instead pull this out of the "Accept-Language" HTTP header. Is it possible with CDN's like CloudFlare and CloudFront to cache different versions of the page based on this header, or if not - what is the recommended best practice for this?

Answer 1

I don't know if any particular CDN supports it, but you should be able to do it by setting Vary: Accept-Language in your responses.