gistfile1.txt

server {
        listen 80;
        listen [::]:80;

        server_name a.server.invalid;

        root /var/www/a;
        index index.html;

        location = /foo {
                try_files /var/www/a/foo.pdf =404;
        }

        location / {
                try_files $uri $uri/ =404;
        }

}