Rails 3.1 Asset Pipeline nginx configuration changes

nginx.conf

location ~ ^/assets/ {
  expires 1y;
  add_header Cache-Control public;

  # Some browsers still send conditional-GET requests if there's a
  # Last-Modified header or an ETag header even if they haven't
  # reached the expiry date sent in the Expires header.
  add_header Last-Modified "";
  add_header ETag "";
  break;
}

location ~ ^/assets/ {
  expires 1y;
  add_header Cache-Control public;

  # Some browsers still send conditional-GET requests if there's a
  # Last-Modified header or an ETag header even if they haven't
  # reached the expiry date sent in the Expires header.
  add_header Last-Modified "";
  add_header ETag "";
  break;
}