nginx_rails_3_1

upstream www {
  # fail_timeout=0 means we always retry an upstream even if it failed
  # to return a good HTTP response (in case the Unicorn master nukes a
  # single worker for timing out).
  server unix:/var/www/shared/tmp/sockets/unicorn.sock fail_timeout=0;
}

server {
  listen 80;
  server_name www.app.com;
  rewrite ^/(.*) http://app.com/$1 permanent;

  root /var/www/current/public;
  access_log /var/www/shared/log/nginx/access.log;
  error_log /var/www/shared/log/nginx/error.log;
  rewrite_log on;

  if ($request_method !~ ^(GET|HEAD|PUT|POST|DELETE|OPTIONS|PATCH)$ ){
    return 405;
  }

  # if the request is for a static resource, nginx should serve it directly
  # and add a far future expires header to it, making the browser
  # cache the resource and navigate faster over the website.
  location ~ ^/(assets)/.+-([0-9a-zA-Z])+\. {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  location / {
    try_files $uri/index.html $uri.html $uri @app;
    error_page 404 /404.html;
    error_page 422 /422.html;
    error_page 500 502 503 504 /500.html;
    error_page 403 /403.html;
  }

  location @www {
    proxy_pass http://app.com;
    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       100m;
    client_body_buffer_size    128k;

    proxy_connect_timeout      90;
    proxy_send_timeout         90;
    proxy_read_timeout         90;

    proxy_buffer_size          4k;
    proxy_buffers              4 32k;
    proxy_busy_buffers_size    64k;
    proxy_temp_file_write_size 64k;
  }

  location = /favicon.ico {
    expires    max;
    add_header Cache-Control public;
  }

  location ~ \.php$ {
    deny  all;
  }
}