Editor's note
I curated a mixed lineup this week: performance tuning, modern auth, developer tooling, and a few architecture pieces. The low-level C# performance article and the passkeys guide stand out because they go straight at problems teams hit in real apps. I also liked the Visual Studio Podman and MAUI preview updates for the practical workflow improvements they bring.
Performance, auth and tooling
Jasen Fici
October 03, 2025
As we hit the pedal on this brisk Friday, let's take a pit stop and fire up our .NET engines for a journey through today's intricate code highways. While others coast toward the weekend, we're tuning in to the purr of optimized APIs and the hum of seamless deployments. Today’s articles promise to turbocharge your repository with the latest from the .NET landscape—because, like a classic GenX muscle car, your code deserves that timeless roar. Buckle up; it's going to be an engaging ride!
Today's Articles
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Jasen's take on today's picks
Improve your .NET knowledge right now!
A quick way to refresh the fundamentals and find a few useful free learning resources.
Next-Level SQL in VS Code: GitHub Copilot, Containers & more | Data Exposed
The Copilot + SQL Server + containers combo is a nice look at where database workflows are heading.
Pushing .NET Performance: Practical Low-Level Programming Techniques in C#
Practical low-level C# advice like spans and stackalloc can still move the needle in hot paths.
IEnumerable vs IQueryable in .NET
A good reminder that IQueryable and IEnumerable are not interchangeable once a database enters the picture.
Visual Studio 2022 Boosts .NET MAUI Development with Enhanced XAML Live Preview
MAUI developers will care about the improved XAML Live Preview and Copilot support here.
This is the kind of deployment walkthrough that helps teams connect GitHub pushes to Azure without a lot of ceremony.
Why I Stand By the Unit of Work Pattern With EF Core in.NET 9’s Clean Architecture
The Unit of Work debate with EF Core is always worth revisiting in a clean architecture codebase.
Async/await never gets old when the explanation stays focused on real responsiveness and scalability.
Boost Your .NET Projects: Simplify Unique Key Generation with KeyGenerator in Spargine
Key generation sounds mundane until you need it to be fast, predictable, and database-friendly.
Best Ways to Handle Null Reference Exceptions in C#
Null reference handling remains one of those basics that still prevents plenty of production pain.
Distributed Caching In .NET 9 With Redis
Redis in .NET 9 is still a strong fit when you need latency down and throughput up.
Visual Studio 2026 Insiders: Using Podman for Container Development
Podman support in Visual Studio 2026 Insiders is a very practical container-development update.
Readonly vs Const in C#: The Hidden Performance Trap Nobody Warned You About
Readonly versus const is a small choice that can have outsized impact in performance-sensitive code.
Go vs. C#: Which Language Uses Memory More Efficiently?
Comparing Go and C# memory use is useful, but the real lesson is knowing your workload.
Passkeys in ASP.NET Core is the sort of security upgrade teams can actually ship.
Top C# Best Practices Every Web Developer Should Know
Solid C# web practices are always useful, especially for teams cleaning up older code.
Smart Dependency Injection in .NET with Custom Attributes
Custom-attribute-driven DI is an interesting way to reduce boilerplate without giving up structure.