I have some nginx configs that sometimes host mutiple domains and some file requests are mapped to the disk using some language.

And example would be WordPress MultiSite. Where blog1.example.com/files/file1.jpg makes to blogs.dir/1/file1.jpg and someanotherblog3.example.com/files/file2.jpg maps to blogs.dir/45/file2.jpg

These could be rewritting by hand individually to allow nginx to naturally cache the file, rather than handing it over to WordPress (PHP) map and server back to nginx.

Is there a way I can programmatically build these?