#http response header

Clean http response header

What are the required http response header fields to sent from server to the client?

I working to optimize the http response header to minimize the http response overhead. I know “overhead” is somewhat exaggerated, but i like a clean output.

I see a lot of website’s, which sends IMHO redundant cache headers:

e.g. It is redundant to specify both Expires and Cache-Control: max-age, or to specify…