C# Cache 设定过期时间的方法

1. 设定绝对过期时间

/// <summary>
        /// 设定绝对的过期时间
        /// </summary>
        /// <param name="CacheKey">key</param>
        /// <param name="objObject">缓存对象</param>
        /// <param name="seconds">超过多少秒后过期</param>
        public static void SetCacheDateTime(string CacheKey, object objObject, long Seconds) 
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, System.DateTime.Now.AddSeconds(Seconds), TimeSpan.Zero);
        }

2.设定相对过期时间

/// <summary>
        /// 设置当前应用程序指定包含相对过期时间Cache值
        /// </summary>
        /// <param name="CacheKey">key</param>
        /// <param name="objObject">缓存对象</param>
        /// <param name="timeSpan">超过多少时间不调用就失效，单位是秒</param>
        public static void SetCacheTimeSpan(string CacheKey, object objObject,long timeSpan) 
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, TimeSpan.FromSeconds(timeSpan));
        }