.NET 9 Articles, Tutorials & News

.NET 9 articles, tutorials, and news from the DotNetNews archive.

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Editor picks for .NET 9

  1. The Power of a Single Exclamation Mark: A Memory Cache Tale in .NET 9

    medium.com Issue #503

    A small syntax detail leading to a caching story is the kind of article that often exposes real-world performance footguns.

    Read article Issue #503

  2. 30 LINQ Interview Questions That Actually Get Asked in 2026

    codewithmukesh.com Issue #486

    Helpful refresher on LINQ topics that actually surface in interviews and code reviews.

    Read article Issue #486

  3. Why I Switched from Swagger UI to Scalar in .NET

    serkanozbeykurucu.medium.com Issue #482

    Worth a look if you’re revisiting API docs tooling after the template changes in newer .NET versions.

    Read article Issue #482

  4. Securing .net 9 Application Using JWt Refresh Token signup , login

    c-sharpcorner.com Issue #475

    JWT refresh token walkthroughs remain evergreen, especially for teams building their own auth flows in newer .NET versions.

    Read article Issue #475

  5. Working with Span, Memory, and ref structs in High-Performance Apps using .NET 9

    c-sharpcorner.com Issue #456

    A practical refresher on the allocation-free toolbox in .NET 9, with the right focus on GC pressure and when stack-backed types actually help.

    Read article Issue #456

  6. Microsoft.Extensions.AI: The .NET Feature That’s Quietly Killing Boilerplate

    medium.com Issue #398

    Microsoft.Extensions.AI is the quiet productivity win here: less glue code when adding LLM features to .NET 9 apps.

    Read article Issue #398

  7. Solving the Distributed Cache Invalidation Problem with Redis and HybridCache

    milanjovanovic.tech Issue #375

    A real-world look at cache consistency across nodes; this is the kind of problem that shows up in production, not slides.

    Read article Issue #375

  8. Using sortable UUID / GUIDs in Entity Framework

    steven-giesel.com Issue #338

    Sortable GUIDs in EF Core is the kind of practical database detail that can quietly improve index behavior and insertion patterns.

    Read article Issue #338

.NET 9 tutorials from the DotNetNews archive, curated for .NET developers who already ship production code. This is a reading list pulled from daily issues, not a substitute for the official docs on .NET 9.

Use Start here for the editorial shortlist, then browse Latest or the full archive when you need more depth. Coverage leans toward .NET 9 features, ASP.NET Core .NET 9, asp.net. Recent pieces worth opening: “The Power of a Single Exclamation Mark: A Memory Cache Tale in .NET 9” and “JWT Done Right: 15 Production Mistakes Every ASP.NET Core Developer Should Avoid (.NET 9 Guide)”.

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