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salaros/services-explained.md

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IServiceProvider in ASP.NET Core dependency injection explained
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services-explained.md

Either approach can be used to get access to the service. Additional service extensions for Startup.cs

Instance

AddInstance<IService>(new Service())

A single instance is given all the time. You are responsible for initial object creation.

Singleton

AddSingleton<IService, Service>()

A single instance is created and it acts like a singleton.

Transient

AddTransient<IService, Service>()

A new instance is created every time it is injected.

Scoped

AddScoped<IService, Service>()

A scoped lifetime services are created once per request.

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