Go语言电商系统：订单服务实战

1. 订单服务

type OrderService struct {
    repo     OrderRepository
    producer MessageProducer
}

func (s *OrderService) CreateOrder(ctx context.Context, req *CreateOrderRequest) (*Order, error) {
    order := &Order{
        UserID: req.UserID,
        Items:  req.Items,
        Status: OrderStatusPending,
    }

    if err := s.repo.Save(order); err != nil {
        return nil, err
    }

    s.producer.Send("order.created", order)

    return order, nil
}

2. 总结

电商订单服务是典型的业务系统实现。