nginx

        server {
            listen ip:80;
            server_name     yourserver.com cdn1.yourserver.com;
            root /srv/http/nginx/yourserver.com;
            access_log      logs/yourserver.com.access.log;

            ## Static files are served directly
            location ~* \.(?:js|css|png|jpg|jpeg|gif|ico)$ {
                expires max;
                add_header Pragma public;
                add_header Cache-Control "public, must-revalidate, proxy-revalidate";
                access_log off;
                log_not_found off;
                ## No need to bleed constant updates. Send the all shebang in one
                ## fell swoop.
                tcp_nodelay off;
                break;
            }

            ## Keep a tab on the 'big' static files
            location ~* ^.+\.(?:m4a|mp[34]|mov|ogg|flv|pdf|ppt[x]*)$ {
                expires 30d;
                ## No need to bleed constant updates. Send the all shebang in one
                ## fell swoop.
                tcp_nodelay off;
            }

            location / {
                index index.html;
                charset   utf-8;
            }

        }