关于ServiceLifetime（服务生命周期）中Transient与Scoped的理解

ServiceLifetime几种注入方式的解释：

Transient：每次请求服务时，都会创建一个新实例，这种生命周期适合用于轻量级服务（如Repository和ApplicationService服务）。
Scoped：为每个HTTP请求创建一个实例，生命周期将横贯整次请求。
SingleTon：在第一次请求服务时，为该服务创建一个实例，之后每次请求将会使用第一次创建好的服务。
Instance：与SingleTon类似，但在应用程序启动时会将该实例注册到容器中，可以理解为比SingleTon还早存在。

以下面的例子来理解：

建立一个拥有OperationId的接口IOperation，以不同方式注入IOperation打印出OperationId观察几种注入方式

public interface IOperation
{
    Guid OperationId { get; }
}

建立后期不同方式注入服务的接口

public interface ITransientOperation: IOperation
{
}
public interface IScopedOperation: IOperation
{
}

接口实现

public class Operation : IOperation, ITransientOperation, IScopedOperation
{
    private Guid operationId { get; set; }
    public Guid OperationId => operationId;
    public Operation(Guid id)
    {
        operationId = id;
    }
    public Operation():this(Guid.NewGuid()) { }
}

注入服务

builder.Services.AddTransient<ITransientOperation, Operation>();
builder.Services.AddScoped<IScopedOperation, Operation>();

在建立一个实现了不同注入方式的服务的TestService，用以对比直接在请求中实现不同方式注入服务得到的结果，方便观察在同一请求中不同方式注服务的结果表现

public interface ITestService
{
    public Guid TransientRes { get; set; }
    public Guid ScopeRes { get; set; }
}
public class TestService : ITestService
{
    public readonly ITransientOperation _transientOperation;
    public readonly IScopedOperation _scopedOperation;

    public Guid TransientRes { get; set; }
    public Guid ScopeRes { get; set; }
    public TestService(ITransientOperation transientOperation, IScopedOperation scopedOperation)
    {
        _transientOperation = transientOperation;
        _scopedOperation = scopedOperation;
        TransientRes = _transientOperation.OperationId;
        ScopeRes = _scopedOperation.OperationId;
    }
}

Controller调用

[ApiController]
[Route("controller")]
public class UserController : ControllerBase
{
    private readonly ITestService _testService;
    private ITransientOperation _transientOperation;
    private IScopedOperation _scopedOperation;
    public UserController( ITestService testService, ITransientOperation transientOperation, IScopedOperation scopedOperation)
    {
        
        _testService = testService;
        _transientOperation = transientOperation;
        _scopedOperation = scopedOperation;
    }
   
    [HttpGet("TestServiceOfLifeTime")]
    public TestResult TestService()
    {
        var res=new TestResult();
        res.TransientResult = _transientOperation.OperationId;
        res.ScopedResult = _scopedOperation.OperationId;
        res.TSTransientResult = _testService.TransientRes;
        res.TSScopedResult = _testService.ScopeRes;
        return res;
    }
}