EF Core

Add guardrails around EF Core tenant query filters

Explains how tenant query filters help, where they can be bypassed, and what extra safeguards protect tenant isolation.

Audit fields and data change tracking

Explains audit fields and data change tracking with practical .NET data-access examples and production trade-offs.

Authorize a loaded resource by ownership

Loads a resource once, evaluates owner-or-capability authorization, and avoids trusting route ownership claims.

Avoid SQL injection in dynamic API filters

Explains dynamic filters and SQL injection risk with practical .NET data-access examples and production trade-offs.

Build a safe filtered list endpoint

Implements bounded filtering and deterministic keyset pagination without accepting arbitrary query expressions.

Build a typed create-resource endpoint

Creates a resource through an explicit request DTO and returns typed 201, 409, and validation outcomes.

.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