"The other set of enhancements we will make in this
article deal with the user experience. We will improve our user
interface by adding Ajax elements to the application. This will not
just be Ajax for Ajax's sake. It will also tie into some of the
data-modeling and cache enhancements to further improve the
performance of the application. Once these enhancements are in
place, we will be ready to deploy the application to the GAE. Let's
start by looking at the data-modeling enhancements."