Answer
Singleton: One instance for entire app.
Scoped: One instance per request.
Transient: New instance per usage.
Quick Answer
Transient: new instance created every time it's requested (stateless, lightweight services). Scoped: one instance per HTTP request - shared within that request (EF Core DbContext). Singleton: one instance for the app lifetime - shared across all requests (config, caches). Never inject Scoped into Singleton - creates a captive dependency (the Scoped object lives longer than intended).
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