> > Sort of > peculiar how a browser on the client's computer is more capable in > this area than a powerful web server.
If you need async calls you can take a look at gevent, eventlet or twisted But put in your mind the main difference: the browser is running continuously (until you close it), and this way ajax can work in background, but the request is ended at the moment you receive the response, before returning the response you will need to wait for all async calls to be completed ( if you want them completed) a good example of what I am talking is the new Datastore plus developed by Guido van Rossum for GAE http://code.google.com/p/appengine-ndb-experiment/