private static void SetToDB(string key, string value)
        {
            DynamicStorageService svc   = new DynamicStorageService();
            DynamicStorageCache   cache = new DynamicStorageCache();

            svc.SetToDB(key, value);
            cache.ClearCacheEntry(key);
        }
        private static string GetFromDB(string key)
        {
            DynamicStorageService svc   = new DynamicStorageService();
            DynamicStorageCache   cache = new DynamicStorageCache();

            var value = cache.GetValue(key, svc.GetFromDB);

            if (value != null)
            {
                return(value.ToString());
            }
            else
            {
                return(null);
            }
        }