php - .htaccess accounts for gzip encoding and caching but YSlow reports an 'F' on both -


i new optimization techniques such gzip compression , caching. after research on net, realized possible through .htaccess based on apache handlers. had enquired webhosting know if mod_deflate , mod_headers libraries present , available

i checked through firebug. shows request headers "accept-encoding gzip,deflate" there no "content-encoding" in response field. can please me out on going wrong?

following code of .htaccess file

            options -indexes             options +followsymlinks             rewriteengine on              rewritebase /             rewritecond %{request_filename} !-f             rewritecond %{request_filename} !-d             rewriterule . /index.php [l]              <ifmodule mod_deflate.c>             addoutputfilterbytype deflate application/x-javascript             addoutputfilterbytype deflate text/css text/html text/plain text/xml             deflatecompressionlevel 9             </ifmodule>               # ----------------------------------------------------------------------             # expires headers (for better cache control)             # ----------------------------------------------------------------------              # these pretty far-future expires headers.             # assume control versioning filename-based cache busting             # additionally, consider outdated proxies may miscache             # www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/              # if don't use filenames version, lower css , js             # "access plus 1 week" or so.              <ifmodule mod_expires.c>               expiresactive on              # perhaps better whitelist expires rules? perhaps.               expiresdefault "access plus 1 month"              # cache.appcache needs re-requests in ff 3.6 (thanks remy ~introducing html5)               expiresbytype text/cache-manifest "access plus 0 seconds"              # document html               expiresbytype text/html "access plus 0 seconds"              # data               expiresbytype text/xml "access plus 0 seconds"               expiresbytype application/xml "access plus 0 seconds"               expiresbytype application/json "access plus 0 seconds"              # feed               expiresbytype application/rss+xml "access plus 1 hour"               expiresbytype application/atom+xml "access plus 1 hour"              # favicon (cannot renamed)               expiresbytype image/x-icon "access plus 1 week"              # media: images, video, audio               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 video/ogg "access plus 1 month"               expiresbytype audio/ogg "access plus 1 month"               expiresbytype video/mp4 "access plus 1 month"               expiresbytype video/webm "access plus 1 month"              # htc files (css3pie)               expiresbytype text/x-component "access plus 1 month"              # webfonts               expiresbytype application/x-font-ttf "access plus 1 month"               expiresbytype font/opentype "access plus 1 month"               expiresbytype application/x-font-woff "access plus 1 month"               expiresbytype image/svg+xml "access plus 1 month"               expiresbytype application/vnd.ms-fontobject "access plus 1 month"              # css , javascript               expiresbytype text/css "access plus 1 year"               expiresbytype application/javascript "access plus 1 year"              </ifmodule>

are sure host provider has both modules enabled? have checked website hosted in same provider? small host providers turn off mod_deflate on shared plans save cpu therefore increase sharing.

trying curl js resource on site, e.g.:

curl -i "http://yslow.org/yslow-bookmarklet.js" -h "accept-encoding: gzip, deflate"

you should like:

http/1.1 200 ok server: nginx/1.0.13 date: wed, 06 jun 2012 18:31:25 gmt content-type: application/x-javascript last-modified: fri, 25 may 2012 16:11:28 gmt connection: keep-alive expires: thu, 07 jun 2012 18:31:25 gmt cache-control: max-age=86400 content-encoding: gzip

look content-encoding make sure mod_deflate on , expires , cache-control mod_expires.


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