caching - Apache Vhost Directives Optimized for Pagespeed -


i use setup in vhost:

<location />   setoutputfilter deflate   browsermatch ^mozilla/4 gzip-only-text/html   browsermatch ^mozilla/4\.0[678] no-gzip   browsermatch \bmsi[e] !no-gzip !gzip-only-text/html   setenvifnocase request_uri \   \.(?:gif|jpe?g|png)$ no-gzip dont-vary   header append vary user-agent env=!dont-vary </location> <directory />   expiresactive on   expiresbytype text/html "access plus 5 minutes"   expiresbytype text/css "access plus 1 month"   expiresbytype application/x-javascript "access plus 1 month"   expiresbytype application/javascript "access plus 1 month"   expiresbytype text/javascript "access plus 1 month"   expiresbytype image/gif "access plus 1 month"   expiresbytype image/png "access plus 1 month"   expiresbytype image/jpg "access plus 1 month"   expiresbytype image/jpeg "access plus 1 month"   expiresbytype image/x-icon "access plus 1 month"   expiresdefault "access plus 1 day"    <filesmatch "\.(ico|jpeg|pdf|flv|jpg|png|gif|js|css|swf)$">     header set cache-control "max-age=2592000, public"     header unset last-modified     header unset etag     fileetag none   </filesmatch>   <filesmatch "\.(html|php)$">     header set cache-control "max-age=900, public, must-revalidate"   </filesmatch> </directory>

while works great speeding thing, users dont see changes themselfs made on content (mainly while using firefox) :( suggestions / optimization hints?

instead of forcing browser cache, should send must-revalidate header , control caching within programming language (for example, php) sending expires , last-modified header. browser ask site latest version on each request, make sure answer empty page if nothing has changed.

this may take time implement, works.


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