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 = 60;
        }
        public override void OnActionExecuted(ActionExecutedContext filterContext) {        
            if (Duration <= 0) 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() {
}