If I want to transform links from http://exampledomain.com/sub-folder/some-article to http://subdomain.exampledomain.com/some-article where subdomain has the same name as the subfolder, do I need a rewrite or a redirect? I *think* I need a redirect but want to be sure I am doing it the recommended way.

I tried rewrite /sub-folder-name/(.*) $scheme://sub-folder-name.exampledomain.com/$1 permanent;

But this didn't seem to have any effect after restarting nginx.

Thanks!