API Testing and Production Debugging Labs

Add a regression test after a role-specific incident

Turns a production-only role and payload failure into the smallest durable API regression test.

Build a non-destructive post-deploy API smoke check

Checks health, authentication, and one critical read flow after deployment without creating persistent business data.

Diagnose connection-pool pressure from a leaking code path

Pairs a bounded isolated reproduction with telemetry and a disposal fix for leaked database connections.

Guard an endpoint against N plus one queries

Uses a test-only DbCommandInterceptor to fail a regression when database command count grows with page size.

Implement and test a production-safe readiness check

Builds a bounded readiness check for one required dependency while keeping liveness independent and responses non-sensitive.

Integration-test an authenticated API endpoint

Uses WebApplicationFactory with test-only authentication and isolated dependencies to exercise the real ASP.NET Core pipeline.

.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