be careful relying on that though.. Each pop has it's own cache, and when there's a miss, it'll hit your server. Its pretty rare that a CDN gives you any insig

be careful relying on that though.. Each pop has it's own cache, and when there's a miss, it'll hit your server. Its pretty rare that a CDN gives you any insight into their caches, and there's no guarantee a file is kept in the cache. A file can be removed from the cache for many reasons--cache filled; file not popular enough; etc. So even if your local pop is saying the file is cached.. the other pops may not have any files for your website at all... or might be missing parts of the page (images, etc). (The x-cache header only indicates the status of the file at the pop that served the request -- not all pops.)