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CYQ.Data 数据框架 缓存使用帮助
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本节介绍CYQ.Data.Cache,缓存的相关使用方法: 一:缓存操作 1:缓存对象定义: public CYQ.Data.Cache.CacheManage cache=CYQ.Data.Cache.CacheManage.Instance;
2:缓存添加 方法原型: public void Add(string key, object value) public void Add(string key, object value, string filePath) public void Add(string key, object value, string filePath, double cacheTimeMinutes) 示例: cache.Add("newObj",new UserInfo());//缓存一个实体类 cache.Add("htmlObj",document,Server.MapPath("a.html"));//缓存html,并设置文件依赖 cache.Add("userObj",UserInfo,null,5);//缓存用户信息,5分钟。 3:缓存获取 方法原型:public object Get(string key) 示例: UserInfo info=cache.Get("newObj") as UserInfo;
4:缓存更新 方法原型: public void Update(string key, object value) public void Set(string key, object value) 示例: cache.Update("newObj",new UserInfo());//如果存在缓存项,则更新对象 cache.Set("newObj",new UserInfo());//如果存在缓存项,则更新对象,不存在,则添加 5:缓存删除 方法原型: public void Remove(string key) public void Clear() 示例: cache.Remove("newObj");//删除缓存的实体类项 cache.Clear()清除所有缓存项 6:自定义缓存标识 方法原型: public void SetChange(string key,bool change) public bool GetHasChanged(string key) 示例 cache.SetChange("newObj",true);//标识一个缓存项被更改过。 bool beChanged=cache.GetHasChanged("newObj");获取到标识被更改过。 作用示例: 比如在某文章中,该文章被缓存,用户编辑了一下,此时可设置标识位,该缓存被修改过,但不调整页面缓存。等页面有用户浏览时,根据标识再进行处理。
二:缓存管理(V5.0以上功能) 1:获取所有缓存信息: Dictionary<string, CacheDependencyInfo> infoList = cache.CacheInfo;
2:打印缓存信息示例: private string row = "<tr><td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td><td>{4}</td><td style='text-align: left;'>{5}</td></tr>"; 打印缓存效果:
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