gistfile1.txt

upstream mephisto {
  server 127.0.0.1:8000;
  server 127.0.0.1:8001;
  server 127.0.0.1:8002;
  server 127.0.0.1:8003;
}

server {
    listen       80;
    server_name  example.com;
    root /var/www/apps/mephisto/current/public;
    access_log /var/www/apps/mephisto/shared/log/example.com-access.log;
    error_log /var/www/apps/mephisto/shared/log/example.com-error.log;
    client_max_body_size  50M;

		set $port "";

		if ($server_port != 80) {
			set $port :$server_port;
		}

		if ($host ~* ^www\.(.*)$) {
			set $domain $1;
			rewrite ^(.+)$ $scheme://$domain$port$1 permanent;
		}

		if ($host ~* ^(?!www)[\w_-]+(\.[\w]+)+$) {
			set $domain $host;
		}

		location / {
			proxy_set_header  X-Real-IP  $remote_addr;
			proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header Host $http_host;
			proxy_redirect off;

			if (-f $document_root/cache/$domain$uri/index.html) {
				rewrite (.*) /cache/$domain$1index.html break;
			}

			if (-f $document_root/cache/$domain$uri.html) {
				rewrite (.*) /cache/$domain$1.html break;
			}

			if (-f $document_root/cache/$domain$uri) {
				rewrite (.*) /cache/$domain$1 break;
			}

			proxy_pass http://mephisto;
		}

		location /admin {
			proxy_set_header  X-Real-IP  $remote_addr;
			proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header Host $http_host;
			proxy_redirect off;
			proxy_pass http://mephisto;
		}

		location ~ ^/assets/\d+/ {
			rewrite ^/assets/(\d+)/(.+)$ /assets/$domain/$1/$2 last; 
		}

		location /assets {}
		location /cache {}
		location ~ ^/(images|javascripts|stylesheets)/(mephisto) {}

		error_page   500 502 503 504  /50x.html;
		location = /50x.html {
			root   html;
		}
}