Some expensive tree crawling in Umbraco without caching

public IPublishedContent GetGlobalContentNode()
{
  var settingsNode = GetNonPageContentNode();

  //Get the child folder node - Configuration Folder
  var configFolder = settingsNode.Children.SingleOrDefault(x => x.DocumentTypeAlias == Constants.DocTypes.SiteConfigurationFolder);

  if (configFolder == null) { return null; }

  //Try & get the child External Services node
  var  globalContentNode = configFolder.Children.SingleOrDefault(x => x.DocumentTypeAlias == Constants.DocTypes.GlobalContent);

  return globalContentNode;
}