PetShop学习笔记（二）之缓存机制

1.页面缓存

在xx.aspx头文件中加入：

<%@ OutputCache Duration="10" VaryByParam="none"%>

其中Duration为持续时间，单位为秒

 

2.文件依赖缓存

using System;
using System.Web;
using System.Web.Caching;
 
protected void ShowTime()
    { 
        //键
        string key = "TimeNow";
 
        //试图从缓存中获取时间
        string strTime = (string)HttpRuntime.Cache[key];
 
 
        if (string.IsNullOrEmpty(strTime))
        {
            strTime = DateTime.Now.ToString();
 
            //新建缓存依赖
            CacheDependency dep=
new CacheDependency(Server.MapPath("~/myCacheDependency.htm"),DateTime.Now);
 
            //插入缓存
            Cache.Insert(key, strTime, dep);
        }
 
        Label1.Text = strTime;
 
    }

 

3.SQL缓存依赖

未完待续