Part of: ASP.NET Core: a working guide for .NET developers, C#: a working guide for .NET developers, .NET Core: a working guide for .NET developers, EF Core: a working guide for .NET developers, Performance: a working guide for .NET developers
Editor's note
I kept this issue deliberately mixed, which is how I like the newsletter best. The collection optimization piece is practical because small allocation and iteration choices still add up fast in real applications, and the ASP.NET Core logging article stands out for pairing request tracing with exception visibility. There’s also a useful compare-and-contrast on DataAnnotations versus FluentValidation instead of treating validation as a one-size-fits-all choice.
C# 14, validation, and ASP.NET logging
Jasen Fici
May 08, 2026
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Today's Articles
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Jasen's take on today's picks
Common Challenges Developers Face with .NET Services and How to Solve Them
A broad overview piece on common .NET service pain points that should be most useful to newer teams sorting out reliability and maintainability basics.
Greater Than or Equal (>=) in C#: Unlocking the Power of Comparison for Robust .NET Applications
A beginner-friendly refresher on the >= operator that is simple by topic but still relevant when writing clear conditional logic.
From Allocation to Iteration: Optimizing Your Collections in .NET
This is the most practical performance item here, focusing on collection sizing and iteration costs that quietly affect everyday .NET code.
Mostly a release-note pickup, but VS Code updates matter when they change editing, debugging, or extension behavior for daily .NET work.
C# 14 Features Every .NET Developer Should Know in 2026
A forward-looking summary of C# 14 features that helps developers quickly scan what language changes may be worth adopting.
AsGuard: A Lightweight Request & Exception Logger for ASP.NET Core (With Built-in Dashboard
Interesting for teams wanting lightweight request and exception visibility in ASP.NET Core without immediately reaching for a full external observability stack.
DataAnnotations or FluentValidation? Stop Picking One for Everything
I like the premise here because validation is rarely one-tool-only, and the tradeoff discussion is more useful than dogmatic guidance.
A basic authentication primer for .NET Core that will land best with readers looking for a starting point rather than deep implementation detail.
ASP.NET Web API CRUD Operations
A straightforward CRUD tutorial combining ASP.NET Web API, .NET 8, and EF Core for developers building out standard data endpoints.