Improve the performance of an ASP.NET application

Question

How to improve the performance of an ASP.NET application? Which are are the fields I should take care? The application includes DB connections and Image Parsing etc.

Answer 1

I wrote a book about this that was just released, called Ultra-Fast ASP.NET: Build Ultra-Fast and Ultra-Scalable web sites using ASP.NET and SQL Server.

The book is about 500 pages long, so there's a fair amount you can do, at all tiers: client (HTML/JavaScript structure), IIS, ASP.NET, SQL Server, infrastructure, etc.