добавил в файл .htaccess, эти строки
<IfModule mod_expires.c>
Header append Cache-Control "public"
FileETag MTime Size
ExpiresActive On
ExpiresDefault "access plus 0 minutes"
ExpiresByType image/ico "access plus 1 years"
ExpiresByType text/css "access plus 1 years"
ExpiresByType text/javascript "access plus 1 years"
ExpiresByType image/gif "access plus 1 years"
ExpiresByType image/jpg "access plus 1 years"
ExpiresByType image/jpeg "access plus 1 years"
ExpiresByType image/bmp "access plus 1 years"
ExpiresByType image/png "access plus 1 years"
</IfModule>
но кэширование не включается на локалхосте
