How Does it Work?

Once CloudFlare is enabled for your website, it is designated as your
authoritative name servers; this allows CloudFlare to clean and
accelerate your traffic as all requests to your website are now routed
through CloudFlare. With network routing technology and 23 data
centers around the world, CloudFlare is able to:
*.Screen your website's traffic for malicious visitors- CloudFlare
receives requests for your website and analyzes them to determine if a
visitor is a threat based on the visitor's IP, the resource being
requested, the payload being postedand how frequently requests are
being made among other things. Threats are blocked and "good" visitors
are able to quickly access the pages they request.
*.Cache static content on your website- CloudFlare caches static
content on your website like images, JavaScript and CSS, not HTML.
Cached content is refreshed frequently and delivered directly to
visitors from a local CloudFlare data center at an extremely fast
speed. Even when data is not cache-able, CloudFlare is able to respond
to requests just as fast through premium routes.
*.Optimize your web content- Rocket Loader technology is included in
all CloudFlare plans (even the free one) and helps your website to
more efficiently process requests for third party scripts like apps,
widgets and tags. Rocket Loader ensures that no script blocks your
page content fromloading by bundling all script requests into a single
request and loading them one at a time.