I have this in my htaccess which is in my root www folder.
# Turn on Expires and set default to 0
# Set up caching on media files for 1 year (forever?)
Header append Cache-Control "public"
# Set up caching on media files for 1 week
Header append Cache-Control "public, proxy-revalidate"
# Set up 2 Hour caching on commonly updated files
Header append Cache-Control "private, proxy-revalidate, must-revalidate"
# Force no caching for dynamic files
Header set Cache-Control "no-cache, no-store, must-revalidate, max-age=0, proxy-revalidate, no-transform"
Header set Pragma "no-cache"
If I check my main page http://www.physicsforums.com with pagespeed it says almost all my items are cached. Good! However if I check a page link http://www.physicsforums.com/forumdisplay.php?f=149 then it says none are cache. What am I doing wrong? thanks!
Isn't forumdisplay.php a dynamic file? Not knowing how your cache works, I suspect that it has something to do with this (as the script asking for the "supporting files").
right the php file itself is no cache and that is fine, but all the images and css end up without a cache exp too