What is the difference between AddScoped and AddTransient?
PICTURE THIS: A REST CALL
Simple meaning
Transient creates a new instance every injection.
WHY — ASP.NET instead of guessing?
Why interviewers care about ASP.NET:
contrast on ASP.NET, not two memorised paragraphs.
the developer, then one case where picking wrong hurts.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1Transient creates a new
instance every injection.
- 2Why it exists
Scoped lasts one HTTP request.
- 3I use Scoped for
DbContext and Transient for lightweight stateless services.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
Transient creates a new instance every injection. Scoped lasts one HTTP request.