What kind of service offers Cloudflare ?
Cloudflare offers caching, CDN and DDoS protection among other services. Here you can find a detailled overview of all services from Cloudflare.
How does caching work with Cloudflare ?
If you configure a subdomain for Cloudflare in your easyname Controlpanel, a CNAME entry to your DNS configuration will be added. The CNAME entry will look like this example:
sub.domain.com --> CNAME --> sub.domain.com.cdn.cloudflare.net
If there is a request to your website, the requests will go directly to the nearest Cloudflare Server around you. If Cloudlflare has a fresh copy of your website in its cache, the response will be sent directly to the requester. If Cloudflare has a old copy of the website, Cloudflare will make a request to your server at easyname and ask for a fresh copy. This copy is then saved on the Cloudflare servers which in turn will send a fresh copy to the requester.
What is Cloudflares DDoS Protection ?
Cloudflare can defend DDoS attacks against your server because it filters all requests. If a request is from a hacker it will get dropped, if it is from a visitor the response will be sent back. Here you will find more technical information about DDoS protection.