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I have Yslow add-on installed
When I checks my application in Yslow I get Add Expires headers which I don't know
I searched for relevant questions in SO and also Google I found this method appropriate
<?
header("Expires:".gmdate('D, d M Y H:i:s \G\M\T', time() + 3600));
header("Cache-Control: no-cache");
header("Pragma: no-cache");
ob_start();
session_cache_limiter('public');
session_start();
?>
<html>
But still it shows me same
As i am newbie I don't know much about .htaccess
Please help me improve applications performance
Thanks in advance
Wazzy
524
Example. header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Cache-Control: no-cache"); header("Pragma: no-cache");
When you set an expires header for a resource, such as all jpeg images, the browser will store those resources in its cache. The next time the visitor comes back to the page it will load faster, as the browser will already have those images available.
That will only set it for your page content and not things like images and css files, i noticed on your screenshot it says 42 files, presumably these are your images, css, js etc.
Try this in your .htaccess file, note this will only work if you have mod_expires and mod_headers enabled in Apache:
<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access plus 1 seconds"
ExpiresByType text/html "access plus 1 seconds"
ExpiresByType image/gif "access plus 2592000 seconds"
ExpiresByType image/jpeg "access plus 2592000 seconds"
ExpiresByType image/png "access plus 2592000 seconds"
ExpiresByType text/css "access plus 604800 seconds"
ExpiresByType text/javascript "access plus 216000 seconds"
ExpiresByType application/x-javascript "access plus 216000 seconds"
ExpiresByType application/javascript "access plus 216000 seconds"
</ifModule>
<ifModule mod_headers.c>
<filesMatch "\\.(ico|pdf|flv|jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>
<filesMatch "\\.(css)$">
Header set Cache-Control "max-age=604800, public"
</filesMatch>
<filesMatch "\\.(js)$">
Header set Cache-Control "max-age=216000, private"
</filesMatch>
<filesMatch "\\.(xml|txt)$">
Header set Cache-Control "max-age=216000, public, must-revalidate"
</filesMatch>
<filesMatch "\\.(html|htm|php)$">
Header set Cache-Control "max-age=1, private, must-revalidate"
</filesMatch>
</ifModule>
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