Panagiotis Efthymiou

@pefthymiou.bsky.social

Rider 2026.3 is out, and it's 🔥 🔥 Day-one .NET 11 support, inc. C# 15 & Runtime Async debugging. 🔥 JetBrains Air: Run your coding agents in the IDE & review changes in one place. 🔥 New Home screen: Edit files, use terminal, or attach the debugger w/o opening a solution Try it now: jb.gg/rd-263-bs

What's New in Rider 2026.3

Rider 2026.3 brings JetBrains Air, new AI agent skills, .NET 11 and C# 15 support, faster performance and debugging, plus updates for Unreal Engine and Godot.

jb.gg

🐢 App feels slow... but WHICH process is guilty? 🔍⚡ This deep dive shows how to hunt hidden latency across a distributed .NET app using Visual Studio Performance Profiler + GitHub Copilot Profiler Agent. 📖 Read the blog: msft.it/63325akVpD

A purple gradient background features the text 'Today I will... find hidden latency across a distributed .NET application'. Three logos on the right represent Visual Studio, .NET, and an unspecified application, all set in a modern design.

I've compiled a study book list for the next 6-12 months. Let's see where this will get me. - Acing the System Design Interview (Zhiyong Tan) - API Design Patterns (JJ Geewax) - Architecture Modernization (Nick Tune) - Continuous Architecture in Practice (Murat Erder, Pierre Pureur, Eoin Woods)

🎸 .NET 11 goes to 11. 🔥 Smarter JIT deabstraction, fewer allocations, fewer bounds checks, tighter loops, SIMD boosts, and hundreds of runtime/library optimizations. ⚡ Your code may get faster without changing a line. 📖 Read: msft.it/63320abvXk

A cartoon character, resembling a robot, rides a pink rocket labeled '.NET 11' against a purple background. The text 'Performance Improvements in .NET 11' appears prominently to the left.

Saturday Copilot save list: 1. Keep sessions PR-sized 2. Ask for bug review, not “thoughts” 3. Give broken-test tasks a stop condition The pattern is boring but useful: smaller scope, clearer constraints, easier review.

Aspire is an open-source cloud and agent-ready developer toolchain transforming how you build, run, and deploy observable, production-ready distributed apps. In today's #MSBuild session replay...Aspire for agents. Drop in to meet the new Aspire. buff.ly/mdYvpQF

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text reads: Aspire for agents: Transform how you build and deploy distributed apps