看到过你说过缓存要用CacheDependency,请讲讲具体怎么使用呀!

Question

项目种要用到缓存,想仔细研究下

Answer 1

这样的问题,看书 + google 岂不是比问人更容易

Answer 2

书上讲CacheDependency的很少,你在项目中用过吗?和我讲讲一样给分的呀

Answer 3

这个看MSDN就足够了。上面有很多例子啊。

Answer 4

public void AddObjectWithDepend(string objId, object o, string[] dependKey)
{
           
      CacheItemRemovedCallback callBack = new CacheItemRemovedCallback(onRemove);     CacheDependency dep = new CacheDependency(null, dependKey, DateTime.Now);   webCache.Insert(objId, o, dep, System.DateTime.Now.AddMinutes(TimeOut), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.High, callBack);
}一般程序中会配合CacheItemRemovedCallback 来使用

Answer 5

   //建立回调委托的一个实例
public void onRemove(string key, object val,CacheItemRemovedReason reason)
{            
                switch (reason)
                {
                    case CacheItemRemovedReason.DependencyChanged:
                            break;
                    case CacheItemRemovedReason.Expired:
                        {
                           break;
                        }
                    case CacheItemRemovedReason.Removed:
                        {
                            break;
                        }
                    case CacheItemRemovedReason.Underused:
                        {
                            break;
                        }
                    default: break;
                }

}