# Turn on Expires and set default to 0  
ExpiresActive On  
ExpiresDefault A0  
 
# Set up caching on media files for 1 year (forever?)  
<FilesMatch "\.(flv|ico|pdf|avi|mov|ppt|doc|mp3|wmv|wav)$">  
ExpiresDefault A29030400  
Header append Cache-Control "public"  
</FilesMatch>  
 
# Set up caching on media files for 1 week  
<FilesMatch "\.(gif|jpg|jpeg|png|swf)$">  
ExpiresDefault A604800  
Header append Cache-Control "public"  
</FilesMatch>  
 
# Set up 2 Hour caching on commonly updated files  
<FilesMatch "\.(xml|txt|html|js|css)$">  
ExpiresDefault A7200  
Header append Cache-Control "proxy-revalidate"  
</FilesMatch>  
 
# Force no caching for dynamic files  
<FilesMatch "\.(php|cgi|pl|htm)$">  
ExpiresActive Off  
Header set Cache-Control "private, no-cache, no-store, proxy-revalidate, no-transform"  
Header set Pragma "no-cache"  
</FilesMatch>