The first benchmark I wrote looked deceptively easy. A class. A few attributes. A method. The hard part isn't writing benchmarks. It's knowing what deserves one. Profiles identify. Benchmarks validate. Production teaches. planetgeek.ch/2026/05/27/sto… #dotnet #performance

A CLI for helping agents do performance analysis on .NET projects github.com/adityamandaleeka/… #dotnet #performance

in .NET 11.0 we've landed many changes in JIT (applies to NAOT too) to optimize redundant bound checks to make safe code as fast as unsafe (can be tracked via reduce-unsafe label github.com/dotnet/runtime/pu…). Example: github.com/EgorBot/Benchmark…

In the latest daily builds of the #dotnet CLI, the bundled tools dotnet-user-secrets, dotnet-user-jwts, & dotnet-dev-certs are now native AOT published! This is part of wider work to start native AOT'ing parts of the dotnet CLI to improve startup performance.

What's better than writing a book about GC? Writing a GC! I am excited to share that I've joined Microsoft as Principal Software Engineer, to work on the evolution of the .NET Garbage Collector and in general the future of the .NET runtime. Stay tuned for much more! After my two-year detour into agentic AI, and my deep .NET background, I find it a perfect match for today's evolution of .NET and serving heavy AI workloads. The intersection of AI with low-level programming and hardware-aware algorithms is a great place to be. Not to mention AI-assisted work and engineering is already deep in my heart. #dotnet 💜

Can't wait to play it!

If you ever needed PTY support in .NET, please share yur feedback in github.com/dotnet/runtime/is…

I'm thrilled to release CodeAlta - one of the first efficient AI coding-agent TUIs built entirely in C#/.NET 🚀 I've been developing and using it daily for the past 3 months, and I hope you enjoy it as much as I do! 🤗 Retweets are highly appreciated! 🙏 CodeAlta brings you a beautiful, colorful timeline interface, multiple threads in the same workspace, a real prompt editor experience, quick file viewing/editing with syntax highlighting, in-app model provider configuration, a multi-agent-ready environment, and much more! ✨

Finally! `unsafe` becomes safer! 😊 devblogs.microsoft.com/dotne…

#UCK26 | @lindseybroos is bringing one of the most underrated technologies in the .NET ecosystem to Update Conference Krakow. In her session, Lindsey will show why Microsoft Orleans deserves far more attention from developers building modern distributed systems. From the virtual actor model and built-in state persistence to scalability and developer-friendly architecture, Orleans simplifies many of the challenges teams face when building reliable cloud-native applications. With her strong background in .NET consulting, community leadership, training and real-world software development, Lindsey combines deep technical expertise with a practical perspective developers can immediately apply. If distributed systems, scalability and modern .NET architecture are topics you care about, this is a session you should not miss. 🎤 Learn more about the sessions: krakow.updateconf.net 💻 Watch live: now.updateconference.net 📍 27–28 May 2026, Krakow #UpdateConference #UpdateConferenceKrakow #dotnet #microsoftorleans #distributedsystems #cloudnative #softwarearchitecture #csharp

There is one non-exciting thing about the Process improvements: I've left very little space for any further performance improvements. Especially for the synchronous methods ;)

devblogs.microsoft.com/dotne… Please share your feedback!

It's finally here! Process API Improvements in .NET 11 devblogs.microsoft.com/dotne…

I ended up writing 29 pages. If you work at MSFT and are interested in reviewing it, please let me know!

I started writing the blog post about Process improvements in .NET 11. So far I've described 30-40% of the new APIs and got 9 pages of text ;)

Terminal.Gui v2.0 has been RELEASED. Terminal.Gui enables building sophisticated console applications with modern UIs. gui-cs.github.io/Terminal.Gu… Thank you to all the contributors and users for all the hard work that goes into making this. And thank you to @migueldeicaza for the inspiration and letting me carry on what you started! @dotnet @csharp @terminaltrove

Absolutely interesting series of blog posts (and not just because it’s C# under the hood). nockawa.github.io/blog/what-…

.NET 11 is getting first‑class Zstandard support — from System .IO.Compression all the way to built‑in HTTP compression in ASP .NET Core. ⚡️ In this #ASPNET Community Standup, Radek Zikmund walks through the new APIs and some eye‑opening benchmarks. 🎥 buff.ly/sDkeEq3

GDC Unity Product Update! No Mono! .NET 10 / C# 14! youtube.com/live/BtObK0arD_M…

We're working on new Process APIs to make things easier, more reliable, and more efficient. If you've ever run into deadlocks with Process, check github.com/dotnet/runtime/is… For advanced scenarios, please check github.com/dotnet/runtime/is… Please share your experiences and suggestions!