Is it possible to run ENTIRE site (not just images, etc) via CDN?

[pmeenan]

Sounds like DSA. Joshua Bixby (from Strangeloop) had a pretty good writeup on it here: http://www.webperformancetoday.com/2010/...eleration/

The main "benefit" is that they run the traffic back over tweaked network connections (that have been warmed up) and the front-ends generally have large initial TCP congestion windows (much like Linux 2.6.39). It's usually pretty freakishly expensive for what it is actually doing but for situations where the content is dynamic there really isn't much that you can do.

If you don't mind building vendor-specific functionality they also have ESI support (Edge-side includes) where you can basically cache a "template" at the edge and only the dynamic pieces are fetched at load time (varnish also provides a similar capability).