对于一个提出许多网络请求的iOS应用程序来说，最好的架构是什么?

I'm in the process of rethinking my approach to the request architecture of a large app I'm developing. I'm currently using ASIHTTPRequest to actually make requests, but since I need many different types of requests as a result of many different actions taken in different view controllers, I'm trying to work out the best system of organizing these requests.I'm in the process of rethinking my approach to