I don’t understand quite how it works, but I like it. Coral: The New York University Distribution Network, is, well, their goals, are, let me just tell you how THEY word it.
Coral is peer-to-peer content distribution network. It allows a user to run a web site that offers high performance and meets huge demand, all for the price of a $50/month cable modem. Sites that volunteer to run Coral automatically replicate content as a side effect of users accessing it. Publishing through Coral is as simple as appending a short string to the hostname of objects’ URLs; a peer-to-peer DNS layer transparently redirects browsers to participating cache nodes, which in turn cooperate to minimize load on the source web server. Using modern peer-to-peer indexing techniques, Coral will efficiently find a cached object if it exists anywhere in the network, requiring that it use the origin server only to initially fetch the object once.
I believe the best way to put it, is that it avoids slashdotting. I’ve poked around and I guess it works, but how it works and when I would use it remains a mystery to me.