EditableContentOutputCacheAttribute.cs

namespace AlloyDemo.Business
{
    public sealed class EditableContentOutputCacheAttribute : ContentOutputCacheAttribute
    {
        public EditableContentOutputCacheAttribute()
        {
            UseOutputCacheValidator = UseOutputCache;
        }

        private static bool UseOutputCache(IPrincipal principal, HttpContextBase context, TimeSpan duration)
        {
            var useCache = false;
            if (!principal.Identity.IsAuthenticated && duration != TimeSpan.Zero)
            {
                if (string.Equals(context.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
                {
                    useCache = true;
                    var url = context.Request.Url?.ToString();
                    var content = UrlResolver.Current.Route(new UrlBuilder(url));
                    if (content is IDisableOutputCache page)
                    {
                        useCache = page.DisableOutputCache != true;
                    }
                }
            }

            return useCache;
        }
    }
}