nginx + node setup

1) nginx is used to serve static files (css, js, images, etc.)
2) nginx.conf - changes required to allow proxying back thru to your node app.

So, www.foo.com request comes in

css, js, and images get served thru nginx

everything else (the request for say index.html or "/") gets served through node.

3)  nginx listens on port 80.
4)  node listens on port 8124.

So in your /etc/nginx/sites-available/default:

        location / {
            proxy_pass   http://127.0.0.1:8124; #this is the ip:port where your node app runs
            root   /var/www/yoursitename;
            expires 30d;
            #uncomment this is you want php to pass thru:
            #index index.php index.html;  
            access_log off;
        }

        location ~* ^.+\.(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pdf|txt|tar|wav|bmp|rtf|js|flv|swf|html|htm)$ {
            root   /var/www/yoursitename/public;
        }

        location /doc {
                root   /usr/share;
                autoindex on;
                allow 127.0.0.1;
                deny all;
        }