Autofac SingleInstance WebApi性能

Question

我们已经改善了.SingleInstance（）的无状态API添加服务的性能，但是我对附加的演示代码有疑问，

• 我们在控制器上使用的IBusAppService设置为SingleInstance（），但是在BusAppService内，我们使用了更多接口，例如（IBusRepository或IBusDomainService）
• 因此，问题是，为了提高性能，我们应该将所有接口设置为IBusAppService内的SingleInstance（）还是性能相同，因为它们都位于SingleInstance内？

我将在工作流程中附上一些代码：

ApiController：

    public class BusApiController : ApiController
    {
        private readonly IBusAppService _iBusAppService;
        private readonly IBusMapper _iBusMapper;
        public BusApiController(IBusAppService iBusAppService,
                                IBusMapper iBusMapper)
        {
            _iBusAppService = iBusAppService;
            _iBusMapper = iBusMapper;
        }

        [HttpGet]
        public BusResponse Get(long id)
        {
            var bus = _iBusAppService.Get(id);

            var busResponse = _iBusMapper.Convert(bus);
            return busResponse;
        }
    }


    public class BusResponse {
       public long Id { get; set; }
    }

    public interface IBusMapper
    {
        BusResponse Convert(Bus bus);
    }

    public class BusMapper : IBusMapper
    {
        public BusResponse Convert(Bus bus)
        {
            if (bus == null) return null;

            var result = new BusResponse{Id = bus.Id};
            return result;
        }
    }

    builder.RegisterType<BusAppService>().As<IBusAppService>().SingleInstance();
    builder.RegisterType<BusMapper>().As<IBusMapper>().SingleInstance(); 

ApplicationService

public interface IBusAppService
{
    Bus Get(long id);
}

public class BusAppService : IBusAppService
{
    private readonly IBusRepository _iBusRepository;
    private readonly IBusDomainService _iBusDomainService;
    public BusAppService(IBusRepository iBusRepository, IBusDomainService iBusDomainService )
    {
        _iBusRepository = iBusRepository;
        _iBusDomainService = iBusDomainService;
    }
    public Bus Get(long id)
    {
        var bus = this._iBusRepository.Get(id);
        var busTax = this._iBusDomainService.CalculateTax(bus);

        var result = bus;
        return result;
    }
}

Answer 1

由于受限的依赖性，单个实例服务消耗的任何东西最终都将成为单个实例。 您也可以将它们更改为单个实例，但是不一定会更改与您现在看到的实例化成本相关的性能。