Answer
Controllers use scoped services per request. Views should avoid heavy scoped logic. Middleware is singleton-like and must not directly depend on scoped services.
Quick Answer
Controller: Scoped DI matches the request lifetime — one controller instance per request. Middleware: can be Singleton (defined at startup) or inline lambda. Razor Views: can inject Scoped services directly. The critical rule: never inject a Scoped service into a Singleton — the Scoped service lives longer than its intended request lifetime, causing data leakage between requests.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
Want to bookmark, take notes, or join discussions?
Sign in to access all features and personalize your learning experience.
Source: SugharaIQ