
When to Use Transient, Scoped, or Singleton in .NET Apps - Understanding Service Lifetimes
Service lifetimes—Transient, Scoped, and Singleton—are a core part of Dependency Injection in .NET. Understanding how they work is critical to designing reliable, performant, and bug-free applications. In this guide, we’ll break down each lifetime, how they behave in ASP.NET Core apps, and when to use them. You’ll see real-world examples, learn the impact of each lifetime on memory and object sharing, and avoid common DI mistakes like capturing Scoped services in Singletons.