In previous chapters, we've gone into detail about the API we're going to be communicating with. There's no denying that it's one of the key parts of any application design; in fact many projects can live or die based on the quality of the API they're integrating with, but we've discussed this in the past two chapters and we've still got a lot to cover. From here on, we're generally going to assume that we're working with a well-designed RESTful API that works well with Ext JS. This'll give us some room to concentrate on some new ideas.
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That's not to say you can skip over the API when designing your application. It is very rare you'll be working with a perfect backend, so keep analyzing whether the server is providing the endpoints you need.
We'll move on to looking at the rest of the application, but in a different way to previous chapters; once the data's been pulled down from the server, we'll try and consider how it's going to move through our app. We'll also look at...