модуль 1

<ifModule mod_headers.c>
	    <FilesMatch "\.(js|css|txt)$">
	        Header set Cache-Control "max-age=604800"
	    </FilesMatch>
	    <FilesMatch "\.(flv|swf|ico|gif|jpg|jpeg|png)$">
	        Header set Cache-Control "max-age=2592000"
	    </FilesMatch>
	    <FilesMatch "\.(pl|php|cgi|spl|scgi|fcgi)$">
	        Header unset Cache-Control
	    </FilesMatch>
</IfModule>

модуль 2

<ifModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 5 seconds"
    ExpiresByType image/x-icon "access plus 1 month"
    ExpiresByType image/jpeg "access plus 4 weeks"
    ExpiresByType image/png "access plus 30 days"
    ExpiresByType image/gif "access plus 43829 minutes"
    ExpiresByType application/x-shockwave-flash "access plus 2592000 seconds"
    ExpiresByType text/css "access plus 604800 seconds"
    ExpiresByType text/javascript "access plus 604800 seconds"
    ExpiresByType application/javascript "access plus 604800 seconds"
    ExpiresByType application/x-javascript "access plus 604800 seconds"
</ifModule>