.NET 缓存设计的使用说明

        /// </summary>
        /// <param name="key"></param>
        /// <param name="obj"></param>
        public static void Permanent(string key, object obj)
        {
            Permanent(key, obj, null);
        }

        public static void Permanent(string key, object obj, CacheDependency dep)
        {
            if (obj != null)
            {
                _cache.Insert(key, obj, dep, DateTime.MaxValue, TimeSpan.Zero, CacheItemPriority.NotRemovable, null);
            }
        }

        public static object Get(string key)
        {
            return _cache[key];
        }

        /// <summary>
        /// Return int of seconds * SecondFactor
        /// </summary>
        public static int SecondFactorCalculate(int seconds)
        {
            // Insert method below takes integer seconds, so we have to round any fractional values
            return Convert.ToInt(Math.Round((double)seconds * SecondFactor));
        }
    }
}

其实这个类就是一个单件模式的设计 和缓存的公共操作方法，其中CacheDependency表示建立缓存依赖项，CacheItemPriority表示缓存的优先级。S使用如下

 public static CardShop.Model.Systems GetConfig()
     {
         const string cacheKey = "WebConfig";
         CardShop.Model.Systems sampleCacheTable = Larry.Cache.BaseCache.Get(cacheKey) as CardShop.Model.Systems;
         if (sampleCacheTable == null)
         {
                                   OprationCheck.Message("第一次加载使用缓存");