How does CloudFlare's technology work?

CloudFlare is a CDN (content delivery network) with a security layer. Once a website is part of the CloudFlare community, its web traffic is routed through CloudFlare’s global network. CloudFlare’s network stores a copy of static files closer to web visitors, which means they are delivered more quickly than before. CloudFlare caches resources such as CSS, JavaScript and images. CloudFlare’s technology automatically decides which resources to cache based on file extension names so there is zero configuration. CloudFlare also does compression for every request. CloudFlare’s network also blocks threats and limits abusive bots before they hit the server, which means less wasted bandwidth and server resources. Where are CloudFlare's data centers located? CloudFlare's network currently has 23 locations where it does caching and traffic filtering.
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