I was wondering if anyone had any experience with Cloudflare and what you thought of it? A LOT of big sites are using it, and from what I'm hearing, it's really good at caching entire webpages at the DNS server end without ever having to hit your web servers.
However, for just as many awesome stories I hear about it, I hear just as many nightmares. One site I frequent has been having constant outages since they switched with messages such as "The server is inaccessible so here is a Cloudflare cached copy of the page" when the server was having no issues at all. Another site is claiming that users from China and some other countries can no longer visit their site because Cloudflare has been blocked at the ISP level.
Any firsthand stories to share?