Cache only static files in sub/subfolder but not sub

[JoakimR]

Found the answer to my question here
http://nginx.org/en/docs/http/ngx_http_core_module.html#location

"If a location is defined by a prefix string that ends with the slash
character, and requests are processed by one of proxy_pass, fastcgi_pass,
uwsgi_pass, scgi_pass, or memcached_pass, then the special processing is
performed. In response to a request with URI equal to this string, but
without the trailing slash, a permanent redirect with the code 301 will be
returned to the requested URI with the slash appended. If this is not
desired, an exact match of the URI and location could be defined like this"

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,272506,272523#msg-272523