mvc 缓存页面 减轻服务器压力

方法：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.Mvc;
 namespace PaiXie.Pos.Admin {
     /// <summary>
     /// 缓存页面
     /// </summary>
     public class CacheFilterAttribute : ActionFilterAttribute {
         /// <summary>
         /// Gets or sets the cache duration in seconds. The default is 10 seconds.
         /// </summary>
         /// <value>The cache duration in seconds.</value>
         public int Duration {
             get;
             set;
         }
         public CacheFilterAttribute() {
             Duration = ;
         }
         public override void OnActionExecuted(ActionExecutedContext filterContext) {
             if (Duration <= ) return;
             HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
             TimeSpan cacheDuration = TimeSpan.FromSeconds(Duration);
             cache.SetCacheability(HttpCacheability.Public);
             cache.SetExpires(DateTime.Now.Add(cacheDuration));
             cache.SetMaxAge(cacheDuration);
             cache.AppendCacheExtension("must-revalidate, proxy-revalidate");
         }
     }
 }

调用：

      [CacheFilter]
         public ActionResult Index() {
 }