An overly verbose pattern for caching tree crawling in Umbraco

public IPublishedContent GetGlobalContentNode()
{
    const string CacheKey = "Application.BusinessLogic.Services.GetGlobalContentNode";

    var globalContentNode = HttpContext.Current.Items[CacheKey] as IPublishedContent;

    if (globalContentNode == null)
    {
        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
        globalContentNode = configFolder.Children.SingleOrDefault(x => x.DocumentTypeAlias == Constants.DocTypes.GlobalContent);

        return globalContentNode;
    }

    return globalContentNode;
}