ServiceLifetime
Specifies the lifetime of a service in an IServiceCollection.
Scoped = 1
Specifies that a new instance of the service will be created for each scope. In ASP.NET Core apps, a scope is created around each server request.
Singleton = 0
Specifies that a single instance of the service will be created.
Transient = 2
Specifies that a new instance of the service will be created every time it is requested.