public long UpdateTTL_Item(string key, string ttl) { if (string.IsNullOrWhiteSpace(key) || string.IsNullOrWhiteSpace(ttl)) { throw new ArgumentException("Parameter is invalid.", "key or ttl", null); } try { StackExchange.Redis.RedisValue[] _v = new StackExchange.Redis.RedisValue[1]; _v[0] = ttl; _db.ListSetByIndex(key, 0, _v[0]); return(1); } catch (Exception) { throw; } finally { } }