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On March 19, OpenAI announced that it would acquire Astral, the company behind uv, Ruff, and ty. The Astral team, led by founder Charlie Marsh, will join OpenAI’s Codex team. The deal is subject to regulatory approval. First and foremost: congratulations to Charlie Marsh and the entire Astral team. They shipped some of …
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Aspire 13.2 is here — and this one's a big deal. TypeScript AppHost authoring. An AI-agent-native CLI. New and improved integrations. A smarter dashboard. We've been building toward some of these for a while, and today they ship. [cta-button align='center' text='Get Aspire 13.2' url='https://get.aspire.dev'] Link to …
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When GitHub's Copilot Coding Agent (CCA) first became available in May 2025, the promise of cloud-based AI coding agents was generating enormous excitement, and equal skepticism. So we began an experiment, and like many experiments in software enginee Link to article: …
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“There’s never been a better time to be a JVM or Spring developer.” The Spring ecosystem has evolved dramatically over the past decade, from traditional enterprise applications to microservices, distributed systems, and now AI-powered services. Few people have witnessed that evolution as closely as Josh Long, who has …
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A customer was developing a Windows service process, and it is important to them that the service keep running on their servers. They wanted to know if there was a way they could prevent users who connect to the server from terminating the service. In particular, they wanted to make sure that the user couldn't use the …
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Singleton vs static class in C#: key differences explained, when to use each approach, and how they compare for creational design patterns. Link to article: https://www.devleader.ca/2026/03/23/singleton-vs-static-class-in-c-key-differences-explained
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Last week, in the first part of this series, we explained why two analysts can produce two different answers from the same data, and why that problem gets worse with AI agents. Without a shared semantic layer defining metrics and business logic, AI will generate answers faster, but not more reliably. Today we’ll focus …
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A shard is a deterministic subset of your test suite. Test sharding means splitting one long test run into multiple smaller runs, and executing them in parallel in CI. Instead of waiting for one job that runs every test, you wait for the slowest shard. This often reduces CI wall-clock time and gives faster feedback. …
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To deliver new features faster and continue improving stability and performance, GitHub Copilot plugin will end support for JetBrains IDEs versions 2024.2 and 2024.3. By focusing on newer versions, we can bring you new capabilities more quickly and ensure a high-quality experience. Link to article: …
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Welcome to another issue of Dev Leader Weekly! In this issue, I discuss whether there's a real ROI on learning C# -- and why the answer has almost nothing to do with C# itself. Link to article: https://www.devleader.ca/2026/03/23/is-there-an-roi-on-learning-c-dev-leader-weekly-132
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To address the novel safety challenges posed by a state-of-the-art video model as well as a new social creation platform, we’ve built Sora 2 and the Sora app with safety at the foundation. Our approach is anchored in concrete protections. Link to article: https://openai.com/index/creating-with-sora-safely
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Polecat is now completely supported by JasperFx Software and automatically part of any existing and future support agreements through our existing plans. Polecat was released as 1.0 this past week (with 1.1 & now 1.2 coming soon). Let’s call it what it is, Polecat is a port of (most of) Marten to target SQL Server …
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Learn streaming responses GitHub Copilot SDK C# with AssistantMessageDeltaEvent, Server-Sent Events, and IAsyncEnumerable for real-time AI output. Link to article: https://www.devleader.ca/2026/03/22/streaming-responses-with-github-copilot-sdk-in-c-realtime-token-output
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Compare decorator vs proxy pattern in C# with side-by-side code examples, key differences explained, and guidance on when to use each pattern. Link to article: https://www.devleader.ca/2026/03/22/decorator-vs-proxy-pattern-in-c-key-differences-explained
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This article explains two methods to obtain the current thread ID in .NET and shows which method is more performant. Link to article: https://dotnettips.wordpress.com/2026/03/22/general-performance-exploring-thread-id-retrieval-methods/
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Learn patterns for managing sessions GitHub Copilot SDK C# apps. Session lifecycle, context windows, multi-turn conversations, and best practices. Link to article: https://www.devleader.ca/2026/03/21/managing-sessions-and-context-in-github-copilot-sdk-for-c-patterns-and-best-practices
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Singleton pattern best practices in C#: code organization, thread safety, maintainability tips, and professional implementation guidelines for creational design patterns. Link to article: https://www.devleader.ca/2026/03/21/singleton-pattern-best-practices-in-c-code-organization-and-maintainability
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SignalR connections are server-local. Scale out to multiple instances and messages stop reaching the right clients. Here's how the Redis backplane fixes that - and what you still need to get right. Link to article: https://www.milanjovanovic.tech/blog/scaling-signalr-with-redis-backplane
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Master CopilotClient and CopilotSession -- the two core classes of the GitHub Copilot SDK in C#. Learn the client/session model, session configuration, lifecycle management, the event-driven API, and how they work together in .NET applications. Link to article: …
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Learn exactly how C# source generators work inside the Roslyn compilation pipeline. Understand the two-phase compilation model, syntax providers, and incremental execution. Link to article: https://www.devleader.ca/2026/03/20/how-c-source-generators-work-the-roslyn-compilation-pipeline-explained
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