⚡️ F# Weekly #42, 2025 Highlights .NET 10 RC2 and Victor
F# Weekly issue 42 for 2025 covers topics about .NET 10 Release Candidate 2 and mentions Victor. It gives updates and news related to F# and the latest changes in .NET.
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F# Weekly issue 42 for 2025 covers topics about .NET 10 Release Candidate 2 and mentions Victor. It gives updates and news related to F# and the latest changes in .NET.
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Sergey Tihon's Blog
F# Weekly #42, 2025 – Hi, Victor & .NET 10 RC2
Welcome to F# Weekly, A roundup of F# content from this past week: News Announcing .NET 10 Release Candidate 2 – .NET Blog Announcing the .NET Security Group – .NET Blog .NET and .NET F…
⚡️ Epistemology of Software Conference Keynote
In 2023, a conference keynote called Epistemology of software was given, with the recording available on YouTube. The keynote explored how people can know if software works, using ideas from general epistemology and the philosophy of science, and was aimed at both technical and non-technical listeners.
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In 2023, a conference keynote called Epistemology of software was given, with the recording available on YouTube. The keynote explored how people can know if software works, using ideas from general epistemology and the philosophy of science, and was aimed at both technical and non-technical listeners.
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ploeh blog
Epistemology of software
How do you know that your code works?
⚡️ Azure Cosmos DB Python SDK Version 4.14.0 Released
The stable version 4.14.0 of the Azure Cosmos DB Python SDK is now released. This update includes new features that were made with input from OpenAI, which uses Cosmos DB to store ChatGPT chat data.
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The stable version 4.14.0 of the Azure Cosmos DB Python SDK is now released. This update includes new features that were made with input from OpenAI, which uses Cosmos DB to store ChatGPT chat data.
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Microsoft News
Announcing latest Azure Cosmos DB Python SDK: Powering the Future of AI with OpenAI
Discover the capabilities of Cosmos DB Python SDK. Version 4.14.0 is now available with enhanced performance and features.
⚡️ Thread-Safe Initialization in .NET with LazyInitializer
In .NET, LazyInitializer.EnsureInitialized is a way to make sure a class is set up only once, even if many threads try at the same time. This method works with reference types and checks if something is null to know if it should run the setup.
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In .NET, LazyInitializer.EnsureInitialized is a way to make sure a class is set up only once, even if many threads try at the same time. This method works with reference types and checks if something is null to know if it should run the setup.
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Meziantou's blog
Thread-Safe Initialization with LazyInitializer
Learn how to use LazyInitializer.EnsureInitialized for thread-safe initialization in .NET as an alternative to Lazy<T> class.
⚡️ Rider 2025.3 spots ASP.NET and DB bottlenecks in real time
Rider 2025.3 gives its Monitoring tool serious observability chops — it now detects database and ASP.NET performance issues on the fly. Devs can watch slow queries, request inefficiencies, and resource usage unfold live, right next to CPU, memory, and GC metrics. A cleaner, smarter way to debug performance pain before it hits production.
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Rider 2025.3 gives its Monitoring tool serious observability chops — it now detects database and ASP.NET performance issues on the fly. Devs can watch slow queries, request inefficiencies, and resource usage unfold live, right next to CPU, memory, and GC metrics. A cleaner, smarter way to debug performance pain before it hits production.
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The JetBrains Blog
Coming to Rider 2025.3: ASP.NET and Database Issue Detection In The Monitoring Tool Window | The .NET Tools Blog
In Rider 2025.3, the Monitoring tool window has become even more powerful with the addition of database and ASP.NET issue detection. These new capabilities let you track slow queries, inefficient requ
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⚡️ Azure SQL powers real-world AI-ready migrations
Enterprises are ditching legacy databases for Azure SQL Managed Instance, gaining elastic scale, built-in security, and a foundation ready for AI workloads. Microsoft highlights three case studies that show migrations turning into platforms for innovation—not just cost savings.
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Enterprises are ditching legacy databases for Azure SQL Managed Instance, gaining elastic scale, built-in security, and a foundation ready for AI workloads. Microsoft highlights three case studies that show migrations turning into platforms for innovation—not just cost savings.
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Microsoft SQL Server Blog
Innovation spotlight: How 3 customers are driving change with migration to Azure SQL - Microsoft SQL Server Blog
Learn how Microsoft Azure SQL Managed Instance helps organizations move from legacy constraints to a scalable and secure AI-ready foundation.
⚡️ Azure Cosmos DB revamps Cost Management UI
In the Azure portal, the old “Cost Management” tab for Cosmos DB is now “Account Throughput” — and it’s been moved under Settings. A subtle but welcome tweak that makes account‑level throughput easier to find and manage.
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In the Azure portal, the old “Cost Management” tab for Cosmos DB is now “Account Throughput” — and it’s been moved under Settings. A subtle but welcome tweak that makes account‑level throughput easier to find and manage.
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Microsoft News
“Cost Management” Is Now “Account Throughput” and It’s Moving
The “Cost Management” section has been renamed to “Account Throughput” and can now be found under the Settings section of your Azure Cosmos DB account in the Azure portal.
⚡️ Visual Studio 2026 simplifies extension compatibility
Extension devs, rejoice: Visual Studio 2026 introduces a new compatibility model that lets existing extensions run without rework. If it runs on VS 2022, it’ll run on VS 2026 — no rebuilds, no tweaks. A quiet but huge win for ecosystem stability and smoother upgrades.
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Extension devs, rejoice: Visual Studio 2026 introduces a new compatibility model that lets existing extensions run without rework. If it runs on VS 2022, it’ll run on VS 2026 — no rebuilds, no tweaks. A quiet but huge win for ecosystem stability and smoother upgrades.
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Microsoft News
Modernizing Visual Studio Extension Compatibility: Effortless Migration for Extension Developers and Users
We have great news for extension users and developers: Visual Studio 2026 is introducing an extension compatibility model designed specifically to make your life easier. Our top priority is to ensure that your extensions continue to work seamlessly across…
⚡️ The Signals Loop raises the bar for AI apps
Real-time feedback meets continuous learning — The Signals Loop brings autonomous workflows that refine AI apps and agents on the fly. It’s a new model for building systems that actually learn from every interaction and get sharper with each feedback cycle.
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Real-time feedback meets continuous learning — The Signals Loop brings autonomous workflows that refine AI apps and agents on the fly. It’s a new model for building systems that actually learn from every interaction and get sharper with each feedback cycle.
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Microsoft Azure Blog
The Signals Loop: Fine-tuning for world-class AI apps and agents | Microsoft Azure Blog
Find out how signals loops can drive rapid product improvement, increased relevance, and long-term user engagement for your products.
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⚡️ TypeScript Leads JetBrains’ Promise Index
JetBrains’ new State of Developer Ecosystem report puts TypeScript at the top of its 'Promise Index'—ahead of Rust, Go, and Kotlin. The metric tracks languages with the strongest future growth and developer loyalty, underscoring TypeScript’s expanding influence across modern codebases.
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JetBrains’ new State of Developer Ecosystem report puts TypeScript at the top of its 'Promise Index'—ahead of Rust, Go, and Kotlin. The metric tracks languages with the strongest future growth and developer loyalty, underscoring TypeScript’s expanding influence across modern codebases.
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Visual Studio Magazine
TypeScript Tops Rust in 'Promise Index' of JetBrains Survey -- Visual Studio Magazine
JetBrains’ latest State of Developer Ecosystem report shows Microsoft’s TypeScript leading the firm’s “Promise Index,” a measure of programming languages with the highest potential for future growth--topping Rust, Go, and Kotlin in projected momentum and…
⚡️ Metadata quirks in ASP.NET Core fallback endpoints
ASP.NET Core developers, take note: adding metadata to MVC or Razor Page fallback endpoints isn’t as straightforward as it looks. A new deep dive unpacks the quirks behind metadata handling in fallback routing — essential reading if you’re customizing endpoint behavior or building more flexible APIs.
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ASP.NET Core developers, take note: adding metadata to MVC or Razor Page fallback endpoints isn’t as straightforward as it looks. A new deep dive unpacks the quirks behind metadata handling in fallback routing — essential reading if you’re customizing endpoint behavior or building more flexible APIs.
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Andrew Lock | .NET Escapades
Adding metadata to fallback endpoints in ASP.NET Core
In this post I discuss fallback endpoints and show how adding metadata to MVC or Razor Page fallback endpoints has some quirks to be aware of
⚡️ AI‑powered RAG search with React and Azure SQL
A new sample app shows how to fuse OpenAI with Azure SQL for semantic, context‑aware search. Built with React and Azure Static Web Apps, it applies the RAG pattern to pull the most relevant code and end‑to‑end examples from structured data—an efficient blueprint for building smarter search experiences.
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A new sample app shows how to fuse OpenAI with Azure SQL for semantic, context‑aware search. Built with React and Azure Static Web Apps, it applies the RAG pattern to pull the most relevant code and end‑to‑end examples from structured data—an efficient blueprint for building smarter search experiences.
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Microsoft News
Build an AI Agentic RAG search application with React, SQL Azure and Azure Static Web Apps
Introduction Leveraging OpenAI for semantic searches on structured databases like Azure SQL enhances search accuracy and context-awareness, providing more relevant and insightful results. This example showcases the use of Azure SQL for storing and searching…
⚡️ Copilot’s new Planning mode levels up in Visual Studio
Visual Studio now lets Copilot plan entire coding tasks in Agent Mode. Instead of one-off prompts, it maps out complex work—researching code, breaking it into steps, and iterating automatically. You stay in control while Copilot does the heavy lifting.
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Visual Studio now lets Copilot plan entire coding tasks in Agent Mode. Instead of one-off prompts, it maps out complex work—researching code, breaking it into steps, and iterating automatically. You stay in control while Copilot does the heavy lifting.
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Microsoft News
Introducing Planning in Visual Studio (Public Preview)
Unlock a more efficient coding experience with Planning in Chat, now available in Visual Studio 2022 for better task management.
⚡️ Microsoft tops Gartner’s 2025 Hybrid Infrastructure MQ
Microsoft holds its Leader spot in Gartner’s 2025 Magic Quadrant for Distributed Hybrid Infrastructure — reaffirming its edge in scaling hybrid and cloud-native systems. The repeat win underscores how Azure and the broader Microsoft stack continue to define the enterprise hybrid playbook.
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Microsoft holds its Leader spot in Gartner’s 2025 Magic Quadrant for Distributed Hybrid Infrastructure — reaffirming its edge in scaling hybrid and cloud-native systems. The repeat win underscores how Azure and the broader Microsoft stack continue to define the enterprise hybrid playbook.
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Microsoft Azure Blog
Microsoft a leader in Gartner’s 2025 Distributed Hybrid Infrastructure Magic Quadrant
Microsoft named a Leader in Gartner’s 2025 DHI Magic Quadrant, recognizing innovation and strength in distributed cloud solutions. Learn more.
⚡️ Cosmos DB now feeds Copilot real project context
GitHub Copilot inside VS Code just got smarter for data-driven apps. The Azure Cosmos DB extension now injects your database context directly into Copilot, so code suggestions reflect your schemas and workload patterns — right where you code.
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GitHub Copilot inside VS Code just got smarter for data-driven apps. The Azure Cosmos DB extension now injects your database context directly into Copilot, so code suggestions reflect your schemas and workload patterns — right where you code.
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Microsoft News
Bringing Context to Copilot: Azure Cosmos DB Best Practices, Right in Your VS Code Workspace
Developers love GitHub Copilot for its instant, intelligent code suggestions. But what if those suggestions could also reflect your specific database and workload patterns? That’s now possible with a new feature in Azure Cosmos DB for VS Code. Starting today…
⚡️ Google's Quantum Supremacy
Google has unveiled the Quantum Echoes algorithm, which the company says is the first proven real-world application of quantum computing — so powerful that it surpasses even the most advanced supercomputers.
The algorithm is powered by Google's Willow quantum processor and has demonstrated a speed that exceeds classical solutions by about 13,000 times.
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Google has unveiled the Quantum Echoes algorithm, which the company says is the first proven real-world application of quantum computing — so powerful that it surpasses even the most advanced supercomputers.
The algorithm is powered by Google's Willow quantum processor and has demonstrated a speed that exceeds classical solutions by about 13,000 times.
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Google
Our Quantum Echoes algorithm is a big step toward real-world applications for quantum computing
Our latest quantum breakthrough, Quantum Echoes, offers a path toward unprecedented scientific discoveries and analysis.
⚡️ Azure Storage Mover goes fully managed
Cloud-to-cloud data transfers just got simpler: Azure Storage Mover is now a fully managed service. Move data from File Shares or NAS into Azure Blob and File storage with almost zero downtime — no scripts, no manual orchestration, just smooth migration for enterprise workflows.
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Cloud-to-cloud data transfers just got simpler: Azure Storage Mover is now a fully managed service. Move data from File Shares or NAS into Azure Blob and File storage with almost zero downtime — no scripts, no manual orchestration, just smooth migration for enterprise workflows.
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Microsoft Azure Blog
Fully managed cloud-to-cloud transfers with Azure Storage Mover | Microsoft Azure Blog
Learn how you can benefit from Azure Storage Mover’s new cloud-to-cloud migration capability with direct transfers from AWS S3 to Azure Blob.
⚡️ Microsoft Agent Framework upgrades .NET AI chats
Moving your .NET AI chat app to the Microsoft Agent Framework isn’t just a refactor — it’s a leap in architecture, reasoning, and tool integration. The upgrade brings cleaner logic, more adaptable workflows, and native support for intelligent multi-step interactions inside your existing stack.
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Moving your .NET AI chat app to the Microsoft Agent Framework isn’t just a refactor — it’s a leap in architecture, reasoning, and tool integration. The upgrade brings cleaner logic, more adaptable workflows, and native support for intelligent multi-step interactions inside your existing stack.
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Microsoft News
Upgrading to Microsoft Agent Framework in Your .NET AI Chat App
Step-by-step review on how to upgrade your .NET AI chat app to Microsoft Agent Framework for better architecture, tool integration, and intelligent reasoning.
⚡️ NuGet.org adds Sponsorship for package maintainers
NuGet.org now lets developers sponsor package maintainers directly — finally giving open-source contributors visible, structured support within the ecosystem. It’s a simple, integrated way to recognize maintainers’ work and strengthen the .NET community around the packages everyone relies on.
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NuGet.org now lets developers sponsor package maintainers directly — finally giving open-source contributors visible, structured support within the ecosystem. It’s a simple, integrated way to recognize maintainers’ work and strengthen the .NET community around the packages everyone relies on.
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Microsoft News
Announcing Sponsorship on NuGet.org
Announcing Sponsorship on NuGet.org - An easy way to recognize package maintainers and grow the NuGet community stronger!
⚡️ Visual Studio Copilot gains structured 'Planning' mode
Copilot in Visual Studio now takes on multi-step coding with a new 'Planning' feature. Building on GitHub Copilot’s Agent Mode, it maps tasks, reasons through steps, and shows progress — giving developers more visibility and control over complex workflows.
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Copilot in Visual Studio now takes on multi-step coding with a new 'Planning' feature. Building on GitHub Copilot’s Agent Mode, it maps tasks, reasons through steps, and shows progress — giving developers more visibility and control over complex workflows.
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Visual Studio Magazine
Hands On with New Visual Studio Copilot 'Planning' Feature (Preview) -- Visual Studio Magazine
The feature extends GitHub Copilot's Agent Mode to handle larger, multi-step coding tasks with structured reasoning, transparency, and progress tracking.