Change this rewrite to apache htaccess

The following post explains about the page caching in rails with Nginx.

http://blog.hasmanythrough.com/2008/1/30/segregated-page-cache-storage

I like to implement this solution with my app but on Apache. So, the
main block/route is

if (-f $request_filename) {
break;
}
if (-f /cache$request_filename) {
rewrite (.*) /cache$1 break;
break;
}

if (-f /cache$request_filename.html) {
rewrite (.*) /cache$1.html break;
break;
}
What could be the Apache equivalent for the above Nginx related code??

Posted at Nginx Forum:

millisami wrote:

rewrite (.*) /cache$1 break;

You’ve now posted this to the same list twice.

Just a thought, but perhaps you’d be better off asking for help on an
apache mailing list.

Jim