gistfile1.txt

  location / {
    # serve assets with timestamp directly with max expires header
    if ($request_uri ~* "\.(ico|css|js|gif|jpe?g|png)\?[0-9]+$") {
      expires max;
      break;
    }

    # If the file exists as a static file serve it directly without
    # running all the other rewite tests on it
    if (-f $request_filename) {
      break;
    }

    # 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 $document_root/system/maintenance.html) {
      rewrite  ^(.*)$  /system/maintenance.html last;
      break;
    }

    # needed to forward user's IP address to rails
    proxy_set_header  X-Real-IP  $remote_addr;

    # needed for HTTPS
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header "ENABLE_X_ACCEL_REDIRECT" "true";
    proxy_redirect false;
    proxy_max_temp_file_size 0;

    # check for index.html for directory index
    # if its there on the filesystem then rewite
    # the url to add /index.html to the end of it
    # and then break to send it to the next config rules.
    #if (-f $request_filename/index.html) {
    #  rewrite (.*) $1/index.html break;
    #}

    # this is the meat of the rails page caching config
    # it adds .html to the end of the url and then checks
    # the filesystem for that file. If it exists, then we
    # rewite the url to have explicit .html on the end
    # and then send it on its way to the next config rule.
    # if there is no file on the fs then it sets all the
    # necessary headers and proxies to our upstream mongrels
    #if (-f $request_filename.html) {
    #  rewrite (.*) $1.html break;
    #}

    if (!-f $request_filename) {
      proxy_pass http://upstream
      break;
    }
  }