MVC 使用缓存

public AController()
        {
            ViewBag["Class"] = GetClass();
        }

        private List<BlogsClass> GetClass(int parentId)
        {
            List<BlogsClass> list;
            //查询出分类 尼玛每次都得查,很烦! 有木有？  考虑缓存

            if (HttpContext.Cache["Class"] == null)
            {
                IClass _Class = new CalssData();
                list = _Class.GetParentClass(parentId);
                HttpContext.Cache.Add("Class", list, new CacheDependency(HttpContext.Server.MapPath("~/web.config")), DateTime.Now.AddDays(), TimeSpan.Zero, CacheItemPriority.High, null);
                HttpContext.Cache["Class"] = list;
            }
            else
            {
                list = HttpContext.Cache["Class"] as List<BlogsClass>;
            }
            return list;
        }

结果。。。

aaarticlea/png;base64,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" alt="" />

 protected override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            //Add the ActionResult to cache
            List<BlogsClass> list;
            if (filterContext.HttpContext.Cache["filterContext"] == null)
            {
                IClass _Class = new CalssData();
                list = _Class.GetParentClass();
                filterContext.HttpContext.Cache.Add("Class", list,
                 null, DateTime.Now.AddDays(),
                 System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.High, null);
            }
            else
            {
                list = filterContext.HttpContext.Cache["filterContext"] as List<BlogsClass>;
            }

            //Add a value in order to know the last time it was cached.
            //filterContext.Controller.ViewData["CachedStamp"] = DateTime.Now;

            ViewBag["Class"] = list;
            base.OnActionExecuted(filterContext);
        }

参考：http://www.codeproject.com/Articles/33431/ASP-NET-MVC-Result-Cache