C# 数据缓存操作Cache

1 操作类

public class CacheClass
    {
        ///

        /// 获取当前应用程序指定CacheKey的Cache值
        ///

        ///
        ///
        public static object GetCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;           
            return objCache[CacheKey];
        }

        ///

        /// 设置当前应用程序指定CacheKey的Cache值
        ///

        ///
        ///
        public static void SetCache(string CacheKey, object objObject)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject);
        }

        ///

        /// 设置当前应用程序指定CacheKey的Cache值
        ///

        ///
        ///
        public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration);
        }
        ///

        /// 清除单一键缓存
        ///

        ///
        public static void RemoveOneCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Remove(CacheKey);
        }
        ///

        /// 清除所有缓存
        ///

        public static void RemoveAllCache()
        {
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
            if (_cache.Count > 0)
            {
                ArrayList al = new ArrayList();
                while (CacheEnum.MoveNext())
                {
                    al.Add(CacheEnum.Key);
                }
                foreach (string key in al)
                {
                    _cache.Remove(key);
                }
            }
        }
        ///

        /// 以列表形式返回已存在的所有缓存
        ///

        ///
        public static ArrayList ShowAllCache()
        {
            ArrayList al = new ArrayList();
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            if (_cache.Count > 0)
            {
                IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    al.Add(CacheEnum.Key);
                }
            }
            return al;
        }
    }

 

2 调用

 

 public DataSet GetDataSetByTypeid(string typeid)
        {
            string CacheKey = "KeyName-" + typeid;
            DataSet objModel = (DataSet)DataCache.GetCache(CacheKey);
            if (objModel == null)
            {
                try
                {
                    objModel = ipro.GetDataSetByTypeid(typeid);//取得对象操作,根据自已的需求随意改
                    if (objModel != null)
                    {
                        int intCache = 30;//缓存时间,
                        //绝对期限
                        DataCache.SetCache(CacheKey, objModel, DateTime.Now.AddMinutes(intCache), TimeSpan.Zero);
                        //可调整期限 最后一次访问所插入对象时与该对象到期时之间的时间间隔。
                        //DataCache.SetCache(CacheKey, objModel, DateTime.MaxValue, TimeSpan.FromMinutes(3));
                    }
                }
                catch
                { }
            }
            return objModel;
        }

 

 

 

注：特别注意在调用缓存时做日志记录时如果你用的是StreamWriter.AutoFlush = true;设置记录日志，

此时将会对Cache影响丢失，出现每次请求时重新做缓存现象.