Backend APIs

ActionResult vs typed results in ASP.NET Core APIs

Compare controller ActionResult patterns with minimal API typed results and explicit HTTP outcomes.

API consistency across service boundaries

Explain API behavior when data and operations cross services with separate data ownership.

ApiController conventions and automatic validation responses

Explains attribute routing, binding-source inference, automatic validation responses, and where explicit domain validation still belongs.

Apply a partitioned write rate limit

Partitions limits by authenticated user or trusted client address and returns useful 429 retry metadata.

Apply rate limiting without breaking real clients

Design and debug rate limiting while protecting the API without blocking legitimate users and integrations.

ASP.NET Core authentication schemes, challenge, and forbid

Explains how ASP.NET Core schemes select handlers and why authenticate, challenge, and forbid produce different security behavior.

.NET Full Stack

Full-cycle .NET full-stack interview preparation.

A role-based preparation path covering C#, ASP.NET Core APIs, data access, frontend integration, testing, deployment, system design, real-life scenarios, and behavioral interview topics.

.NET Backend