private async Task ClearCache(int tradePairId, Guid userId) { await CacheService.InvalidateAsync ( CacheKey.ExchangeUserOpenOrders(userId.ToString(), tradePairId), CacheKey.ExchangeUserTradeHistory(userId.ToString(), tradePairId), CacheKey.ExchangeUserOpenOrderDataTable(userId.ToString()), CacheKey.ExchangeUserOrderBook(userId.ToString(), tradePairId) ); }