Using Options pattern (IOptions, IOptionsSnapshot,?

Q: Using Options pattern (IOptions, IOptionsSnapshot,?

Short answer: IOptionsMonitor) IOptions : For singleton/config services. IOptionsSnapshot : Scoped; updates per request. IOptionsMonitor : Singleton; can react to config changes. services.Configure (Configuration.GetSection("MySettings" )); Real-world example (ShopNest) A ShopNest checkout request flows through middleware, hits a minimal API or controller, uses scoped services, and returns ProblemDetails on errors. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Question

Accepted Answer

Short answer: IOptionsMonitor) IOptions: For singleton/config services. IOptionsSnapshot: Scoped; updates per request. IOptionsMonitor: Singleton; can react to config changes. services.Configure(Configuration.GetSection("MySettings" )); Real-world example (ShopNest) A ShopNest checkout request flows through middleware, hits a minimal API or controller, uses scoped services, and returns ProblemDetails on errors. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.