nginx.conf

server {
  listen 80 default_server;
  server_name *;

  # ~2 seconds is often enough for most folks to parse HTML/CSS and
  # retrieve needed images/icons/frames, connections are cheap in
  # nginx so increasing this is generally safe...
  keepalive_timeout 5;

  # path for static files
  root /var/data/vision/public;
  access_log /var/data/vision/log/nginx.access.log;
  error_log /var/data/vision/log/nginx.error.log info;

  # this rewrites all the requests to the maintenance.html
  # page if it exists in the doc root. This is for capistrano's
  # disable web task
  if (-f $document_root/maintenance.html) {
    rewrite  ^(.*)$  /maintenance.html last;
    break;
  }

  location / {
    root /var/data/vision/public;
    index index.html index.htm;
  }

  # Now this supposedly should work as it gets the filenames with querystrings that Rails provides.
  # BUT there's a chance it could break the ajax calls.
  location ~* \.(ico|css|gif|jpe?g|png|js)(\?[0-9]+)?$ {
     expires max;
     break;
  }

  location ~ /\.ht {
     deny all;
  }

  # Error pages
  # error_page 500 502 503 504 /500.html;
  location = /500.html {
    root /var/data/vision/public;
  }
}