Mid From PDF ASP.NET Core ASP.NET Core

Common Mistakes?

Q: Common Mistakes?

Short answer: Mistake Fix Doing authentication inside action filters Use authorization filters Performing heavy logic Move to middleware Not registering filters as services Use DI for maintainability Returning inconsistent error messages Handle errors via global exception filter 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.

Short answer: Mistake Fix Doing authentication inside action filters Use authorization filters Performing heavy logic Move to middleware Not registering filters as services Use DI for maintainability Returning inconsistent error messages Handle errors via global exception filter

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.

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