I'd like to set the following:
ExpiresActive On
ExpiresByType application/x-flash-swf "access plus 1 days"
ExpiresByType application/x-shockwave-flash "access plus 1 days"
<FilesMatch "\.swf$">
Header set Cache-Control "public"
</FilesMatch>
but I usually set on html
<embed src="http://example.com/flash/example.swf?YYYYMMDDSS" />
What is the difference YYYYMMDDSS and Expires(mod_expires)?