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"Caching is great. CloudFlare makes sites faster   in part by taking the static portions of your site and moving them   closer to the visitors to your site. CloudFlare is smart about only   caching static objects so you can run a..."^^<http://www.w3.org/2001/XMLSchema#string>
<https://blog.cloudflare.com/introducing-the-cloudflare-cache-purge-featur/>