With more complexities in your system, sometimes some additional debug or information sent in the HTTP headers can be invaluable. The HTTP headers can have a specific meaning that tells the browser to treat a response a certain way or they could simply be to provide extra information, which can be used to trace specific issues from your website or applications.
Header modification with NGINX
Getting ready
The ability to modify the headers is already inbuilt into the NGINX core, but to use the latest features, you'll need version 1.10.0 or higher.
How to do it...
There...
