How do you REALLY disable website caching?
 

So I check news sites like CNN a few times a day, and one thing I've noticed is that they never show me cached pages. I've tried the usual HTML tricks to disable caching but I never seem to have perfect success. How do sites like CNN.com do it?

HTTP/1.1 200 OK
Server: Powered by Acwebconnecting
Date: Tue, 04 Oct 2016 16:20:52 GMT
Content-Type: text/html; Charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding, Accept-Encoding
CDN-Region: n-cdn-us-ec
Content-Encoding: gzip

You need to set the right headers
How to set HTTP headers (for cache-control)? - Stack Overflow

2Much.net | Webcam pay-per-minute billing & streaming software


HTTP/1.1 200 OK
Date: Tue, 04 Oct 2016 16:34:24 GMT
Server: Apache/2.2.3 (Red Hat)
X-Powered-By: PHP/5.1.6
Cache-Control: max-age=2592000
Expires: Thu, 03 Nov 2016 16:34:24 GMT
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8