Why are mod_expires and mod_headers not working on my server?
问题 I've checked my plesk control panel on my vps and those mods are installed but when I run the site through http://redbot.org/ to check what's being sent, I get: This response is negotiated, but doesn't have an appropriate Vary header. The max-age Cache-Control directive appears more than once. Cache-Control: no-cache, max-age=0, must-revalidate, no-transform, max-age=300 So it doesn't look like it's working. Here's the .htaccess that I edited: ### SILVERSTRIPE START ### <Files *.ss> Order