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

Assuming you are running Apache...

You can set up a simple ETag like this:

FileETag MTime Size

If you have multiple servers, you want to disable ETags.

FileETag None

Put the above code in your httpd.conf (if you have access), otherwise you can put it in .htaccess.