public interface ICacheStrategy {         /// <summary>         /// 添加数据到缓存         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         void Add(string objId, object o, int second);         /// <summary>         /// 添加数据到缓存 (依赖其它缓存)         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         /// <param name="dependKey">依赖缓存名称数组</param>         void AddCacheDepend(string objId, object o, int second, string[] dependKey);         /// <summary>         /// 添加数据到缓存 (依赖文件)         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         /// <param name="files">依赖缓存名称文件名数组</param>         void AddFileDepend(string objId, object o, int second, string[] files);         /// <summary>         /// 删除指定缓存         /// </summary>         /// <param name="objId"></param>         void RemoveCache(string objId);         /// <summary>         /// 删除所有缓存         /// </summary>         void RemoveCacheAll();         /// <summary>         /// 删除匹配到的缓存         /// </summary>         /// <param name="pattern"></param>         /// <returns></returns>         void RemoveCacheRegex(string pattern);         /// <summary>         /// 获取所有缓存键         /// </summary>         /// <returns></returns>         IList<string> GetCacheKeys();         /// <summary>         /// 搜索 匹配到的缓存         /// </summary>         /// <param name="pattern"></param>         /// <returns></returns>         IList<string> SearchCacheRegex(string pattern);         /// <summary>         /// 获得缓存数据         /// </summary>         /// <param name="objId"></param>         /// <returns></returns>         object GetCacheData(string objId);         /// <summary>         /// 判断此缓存是否有效         /// </summary>         /// <param name="objID"></param>         /// <returns></returns>         bool HasCache(string objID); }

public class MemcachedStrategy : ICacheStrategy {         #region ICacheStrategy 成员         /// <summary>         /// 添加数据到缓存         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         public void Add(string objId, object o, int second)         {             if (second > 0)             {                 MemcachedManager.CacheClient.Set(objId, o, DateTime.Now.AddSeconds(second));             }             else             {                 MemcachedManager.CacheClient.Set(objId, o);             }         }         #region 缓存依赖没有用到memcached         /// <summary>         /// 添加数据到缓存 (依赖其它缓存)         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         /// <param name="dependKey">依赖缓存名称数组</param>         public void AddCacheDepend(string objId, object o, int second, string[] dependKey)         {             CacheDependency dependencies = new CacheDependency(null, dependKey, DateTime.Now);             HttpRuntime.Cache.Insert(objId, o, dependencies, DateTime.Now.AddSeconds((double)second), Cache.NoSlidingExpiration, CacheItemPriority.Default, null);         }         /// <summary>         /// 添加数据到缓存 (依赖文件)         /// </summary>         /// <param name="objId">缓存名称</param>         /// <param name="o">缓存内容</param>         /// <param name="second">缓存时间(秒)</param>         /// <param name="files">依赖缓存名称文件名数组</param>         public void AddFileDepend(string objId, object o, int second, string[] files)         {             CacheDependency dependencies = new CacheDependency(files, DateTime.Now);             HttpRuntime.Cache.Insert(objId, o, dependencies, DateTime.Now.AddSeconds((double)second), Cache.NoSlidingExpiration, CacheItemPriority.Default, null);         }         #endregion         /// <summary>         /// 删除指定缓存         /// </summary>         /// <param name="objId"></param>         public void RemoveCache(string objId)         {             if (MemcachedManager.CacheClient.KeyExists(objId))                 MemcachedManager.CacheClient.Delete(objId);         }         /// <summary>         /// 删除所有缓存         /// </summary>         public void RemoveCacheAll()         {             MemcachedManager.CacheClient.FlushAll();         }         /// <summary>         /// 删除匹配到的缓存         /// </summary>         /// <param name="pattern"></param>         public void RemoveCacheRegex(string pattern)         {             IList<string> list = SearchCacheRegex(pattern);             foreach (var item in list)             {                 MemcachedManager.CacheClient.Delete(item);             }         }         /// <summary>         /// 获取所有缓存键         /// </summary>         /// <returns></returns>         public IList<string> GetCacheKeys()         {             return MemcachedManager.GetAllKeys();         }         /// <summary>         /// 搜索 匹配到的缓存         /// </summary>         /// <param name="pattern"></param>         /// <returns></returns>         public IList<string> SearchCacheRegex(string pattern)         {             List<string> l = new List<string>();             IList<string> cacheKeys = MemcachedManager.GetAllKeys();             foreach (var item in cacheKeys)             {                 if (Regex.IsMatch(item, pattern))                 {                     l.Add(item);                 }             }             return l.AsReadOnly();         }         /// <summary>         /// 获得缓存数据         /// </summary>         /// <param name="objId"></param>         /// <returns></returns>         public object GetCacheData(string objId)         {             return MemcachedManager.CacheClient.Get(objId);         }         /// <summary>         /// 判断此缓存是否有效         /// </summary>         /// <param name="objID"></param>         /// <returns></returns>         public bool HasCache(string objID)         {             return MemcachedManager.CacheClient.KeyExists(objID);         }         #endregion }