I am looking at ways of speeding up my Magento site. One way that comes up is to Leverage Browser Caching and Expires Headers. I found to add this to htaccess-
<IfModule mod_expires.c>
# Enable expirations
ExpiresActive On
# Default directive
ExpiresDefault "access plus 1 month"
# My favicon
ExpiresByType image/x-icon "access plus 1 year?
# Images
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"
# CSS
ExpiresByType text/css "access 1 month?
# Javascript
ExpiresByType application/javascript "access plus 1 year"
</IfModule>
My question is what about when I make changes? Most of my changes go to custom.css and I think I can set that individually. When I make a change to custom.css is there a way I can force people who have cached it to get the new one?