Browser-Caching nutzen (Wie?)

// Cache-Lebensdauer (in Minuten)
 $dauer = 15;
 $exp_gmt = gmdate("D, d M Y H:i:s", time() + $dauer * 60) ." GMT";
 $mod_gmt = gmdate("D, d M Y H:i:s", getlastmod()) ." GMT";




 header("Expires: " . $exp_gmt);
 header("Last-Modified: " . $mod_gmt);
 header("Cache-Control: private, max-age=" . $dauer * 60);
 // Speziell für MSIE 5
 header("Cache-Control: pre-check=" . $dauer * 60, FALSE);

<FilesMatch "\.(gif|flv|jpg|jpeg|png|gif|swf)$">
        FileETag -INode MTime Size
         # if you use ETags, you should unset Last-Modified
        Header unset Last-Modified
        Header set Cache-Control "max-age=86400, public, must-revalidate"
        Header set Expires "Thu, 31 Dec 2010 20:00:00 GMT"
    </FilesMatch>
    <FilesMatch "\.(htm|html|php)$">
        FileETag None
        Header set Cache-Control "max-age=86400, public, must-revalidate"
    </FilesMatch>
    <FilesMatch "\.(js|css)$">
        FileETag None
        Header set Cache-Control "max-age=604800, public, must-revalidate"
        Header set Expires "Thu, 31 Dec 2010 20:00:00 GMT"
    </FilesMatch>

<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 300 seconds"
    ExpiresByType image/gif "access plus 1 month 1 hour"
    ExpiresByType image/jpg "access plus 1 month 1 hour"
    ExpiresByType image/jpeg "access plus 1 month 1 hour"
    ExpiresByType image/png "access plus 1 month 1 hour"
    ExpiresByType application/x-shockwave-flash "access plus 1 day 1 hour"
    ExpiresByType text/css "access plus 1 day 1 hour"
    ExpiresByType text/javascript "access plus 7 days 1 hour"
    ExpiresByType application/x-javascript "access plus 7 days 1 hour"
</IfModule>

# BEGIN Expires-Headers
<IfModule mod_expires.c>
	ExpiresActive On
	ExpiresDefault "access plus 1 seconds"




	ExpiresByType image/jpeg "access plus 30 days"
	ExpiresByType image/x-icon "access plus 30 days"
	ExpiresByType image/jpg "access plus 30 days"
	ExpiresByType image/png "access plus 30 days"
	ExpiresByType image/gif "access plus 30 days"




	ExpiresByType text/css "access plus 30 days"
	ExpiresByType text/plain "access plus 30 days"




	ExpiresByType application/javascript "access plus 30 days"
</IfModule>
# END Expires-Headers

GET http://i-stats.net/HTML/style.css




304 Not Modified




Anfrage




GET /HTML/style.css HTTP/1.1
User-Agent: Opera/9.80 (Windows NT 6.1; WOW64) Presto/2.12.388 Version/12.15
Host: i-stats.net
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
Accept-Language: de-DE,de;q=0.9,en;q=0.8
Accept-Encoding: gzip, deflate
Referer: http://i-stats.net/
If-Modified-Since: Wed, 03 Apr 2013 18:25:07 GMT
If-None-Match: "21e097-4506-4d978f932c6c0"
Cookie: ***
Connection: Keep-Alive




Antwort




HTTP/1.1 304 Not Modified
Date: Sun, 07 Apr 2013 15:09:54 GMT
Server: Apache/2.2.16 (Debian)
Connection: Keep-Alive
Keep-Alive: timeout=15, max=60
ETag: "21e097-4506-4d978f932c6c0"
Vary: Accept-Encoding