C# Dependency Injection: Service Lifetime Confusion Leading to Unexpected Behavior in ASP.NET Core 6
I'm upgrading from an older version and I'm stuck on something that should probably be simple... I'm stuck trying to I'm facing an issue with dependency injection in my ASP.NET Core 6 application... I have a service that is registered as Scoped, but I'm experiencing unexpected behavior where the service seems to retain state across different HTTP requests. Here's the relevant portion of my Startup.cs file: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddScoped<IMyService, MyService>(); } ``` In my controller, I'm injecting this service: ```csharp public class MyController : ControllerBase { private readonly IMyService _myService; public MyController(IMyService myService) { _myService = myService; } [HttpGet] public ActionResult<string> Get() { return _myService.GetData(); } } ``` The `GetData` method in `MyService` looks like this: ```csharp public class MyService : IMyService { private string _data; public string GetData() { _data = "Some data"; return _data; } } ``` When I make multiple requests to `Get`, I expect `_data` to be reset on each request, but it appears to be keeping the same value across requests. I suspected that I might be mistakenly registering the service as Singleton instead of Scoped, but I've double-checked that it's correctly registered as Scoped. Additionally, I've tried adding logging inside the `GetData` method to see if I can track the instantiation of the service, and it's only being initialized once. Here’s the logging code I added: ```csharp public string GetData() { _logger.LogInformation("Getting data"); _data = "Some data"; return _data; } ``` I also confirmed that my controller is not being reused across requests by adding a logging statement in the controller's constructor. What could be causing this behavior? Is there something in my configuration that I'm missing, or is there an issue with the way I'm handling service lifetimes? How would you solve this? Thanks in advance! Thanks for any help you can provide!