How many Custom Apps for nginx/gunicorn?

server {    
    listen       80;
    server_name  www.example.com;

    access_log   /some/path/access.log;
    error_log    /some/path/error.log;

    location  / {
        proxy_pass            http://127.0.0.1:11001/;
        proxy_redirect        off;
        proxy_set_header      Host             $host;
        proxy_set_header      X-Real-IP        $remote_addr;
        proxy_set_header      X-Forwarded-For  $proxy_add_x_forwarded_for;
        client_max_body_size  10m;
    }
}