WP-Mix

Quick .htaccess snippet to disable browser caching by modifying Cache-Control, Pragma, and Expires headers. Strictly plug-n-play.

Just add the following directives to your site’s root .htaccess file:

# DISABLE CACHING
<IfModule mod_headers.c>
	Header set Cache-Control "no-cache, no-store, must-revalidate"
	Header set Pragma "no-cache"
	Header set Expires 0
</IfModule>

No editing required. I use this technique on several of my sites and it works like a charm. You can verify that it works using any number of freely available online tools, and/or any browser extension that displays header/server response.

Updates

Update #1: Here is another line that you can play with:

Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"

Update #2: Here is another technique for caching static resources while optimizing performance:

<FilesMatch "\.(css|flv|gif|htm|html|ico|jpe|jpeg|jpg|js|png|pdf|swf|txt)$">
	<IfModule mod_expires.c>
		ExpiresActive Off
	</IfModule>
	<IfModule mod_headers.c>
		FileETag None
		Header unset ETag
		Header unset Pragma
		Header unset Cache-Control
		Header unset Last-Modified
		Header set Pragma "no-cache"
		Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
		Header set Expires "Mon, 10 Apr 1972 00:00:00 GMT"
	</IfModule>
</FilesMatch>

You can customize the list of file types to suit your specific needs.

Peace peoples.