.NET & F# Development

Your .NET test suite started fast and useful. Now it takes 20 minutes and half the tests are fragile. Here's how to write tests that stay valuable as the codebase grows.

Functional programming isn't academic theory — it's practical ideas that make your code more predictable. Here's what FP actually means, why it matters, and how to use it in any language.

Tutorial .NET and production .NET are different languages. Here's what actually matters once you're past the basics: dependency injection done right, middleware that makes sense, and the patterns that keep real applications maintainable.

Your .NET application works. But it's slow in production and you're not sure where. Here's how to find the real bottlenecks — not the ones you'd guess — and fix them without making the code worse.

A clear explanation of what .NET actually is, what it does well, what it does not, and why it matters for developers in 2026.

Dependency injection in .NET is easy to start and easy to get wrong. Here's how service lifetimes, registration patterns, and DI architecture affect maintainability as your application grows.

Solutions, projects, namespaces — how .NET code is organized and why the structure matters.

Build a working REST API with ASP.NET Core in 30 minutes. From dotnet new to a running endpoint.

Hardcoded connection strings are technical debt. Committed secrets are security incidents. Here's how .NET's configuration system works — and how to manage secrets without checking them into source control.

Every HTTP request in ASP.NET Core flows through a pipeline of middleware. Understanding that pipeline — what runs when, in what order, and why — is the difference between debugging for minutes and debugging for hours.

Async/await in .NET looks simple. The bugs it produces when used incorrectly are not. Here's how async actually works, the patterns that scale, and the mistakes that deadlock.

F# is not a different planet — it is the next-door apartment in the .NET building. Here's what F# offers a C# developer and why the functional approach makes certain problems dramatically simpler.

Security isn't a feature you add later. Here are the .NET security practices that prevent the vulnerabilities attackers actually exploit — not the theoretical ones, the real ones.

Debugging isn't guessing. It's a systematic process of gathering evidence, forming hypotheses, and testing them. Here's how to do it in .NET.

Dependency injection sounds academic. It isn't. It's the pattern that makes .NET code testable, flexible, and maintainable — and it's built into the framework.

The core C# concepts you need to start writing code today. Variables, types, control flow, and your first program.

EF Core makes data access easy. It also makes it easy to write queries that bring your database to its knees. Here's how to use it effectively — and when to step around it.

Guessing where your .NET application is slow is not profiling. Here's how to measure, diagnose, and fix performance problems with evidence instead of intuition.