Question

Hi One of the tips in “website performance tips” in various blogs says “Avoid Redirects”. In my case, I am using Response.Redirect for the same page. I am passing a querystring and displaying appropriate information to the user.

Response.Redirect("FinalPage.aspx?NextID=" + ID);

So in our business logic, i am reloading the same page with different information.

So how do i avoid redirect? Is there any other alternative? BTW, my aim is to gain some performance there.

Answer 1

Redirect is the R in the PRG pattern which is an accepted pattern for processing posted requests. So it is definitely not evil.

However, there used to be a common interview question: “What is the difference between Server.Redirect() and Server.Transfer() and which one must be used?”. People used to say Transfer because it did not involve a round-trip but web has changed so much since then. In those days you could not re-use the the common logic in the views unless you use Transfer or Redirect, but nowadays especially with ASP NET MVC there are tons of a ways to do that.

In your case, I am all for PRG and I believe redirect is semantically more correct. Also it prevents the form being re-submited if user clicks F5 or refresh.