Google AppEngine provides an high-level cloud service which means that your application will be distributed automatically on top of the Google platform. All of your code will depends on the AppEngine SDK, so it could be risky to develop complex application on it.

I develop a webservice application for content delivering and content publishing at Zoomorama. We currently use Akamai CDN as a simple cache layer to improve data delivering accross the world. It is interesting for me to use AppEngine in the same way: without changing anything on my existing code base. I have found some posts on blogs dealing with this AppEngine usage, but they are not focused on dynamic HTTP caching like a real CDN.

Principle is very simple, all HTTP requests on my AppEngine application will be copied to the AppEngine Datastore. Moreover data which are delivered through AppEngine are cached by AppEngine servers. The code below is a tiny proof of concept:

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