configuring e-tags

Question

I am using Yslow as a simple speed benchmarking tool and I came across a really confusing concept. The E-tag

So the main problem is : How do I configure E-tags? my grade

Answer 1

The best way to configure your ETags is to remove them. For static files, far-future expiration dates are a much better approach.

The way to remove them depends on the web server you're using. For IIS 7, it can be done with a simple HttpModule.