ASP.NET AJAX under the hood secrets

Microsoft recently released Beta 2 of ASP.NET AJAX. Although it's a very powerful framework, when you will build a real AJAX site like those out there in the Web 2.0 world, you will face many problems that you will hardly find documented anywhere. In this article, I will show some advance level ideas that I learned while building Pageflakes. We will look at the advantages and disadvantages of Batch calls, AJAX call timeouts, browser call jam problem, ASP.NET 2.0's bug in web service response caching, and so on.