Azure dev tools, API hardening, and C# patterns
A varied .NET roundup with GPT-OSS on Ollama, azd updates, ASP.NET Core ProblemDetails and rate limiting, Cosmos DB, Webhooks, and Copilot.
Jasen's top three picks
- 1 GPT-OSS – A C# Guide with Ollama
Microsoft Dev Blogs
Running GPT-OSS locally with Ollama is a practical look at private AI workflows in C# instead of just demos.
- 2 Azure Developer CLI (azd) - August 2025
Microsoft Dev Blogs
The azd release notes matter if you're deploying to Azure regularly, because small CLI updates add up fast.
- 3 Exploring New LINQ Additions in C# 13: Index, CountBy, AggregateBy
Medium
The LINQ additions piece is a nice preview of C# 13 ergonomics that should make collection code cleaner.
Editor's note
I kept this issue deliberately mixed, with AI, cloud tooling, API design, and everyday C# guidance side by side. The GPT-OSS with Ollama piece stands out for showing private local AI in real code, while the rate limiting and ProblemDetails articles are practical reads for anyone shipping ASP.NET Core today.
Today's articles
GPT-OSS – A C# Guide with Ollama
Microsoft Dev Blogs
Run GPT-OSS locally with C# and Ollama to build fast, private, offline AI The post GPT-OSS – A C# Guide with Ollama appeared first on .NET Blog.
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Azure Developer CLI (azd) - August 2025
Microsoft Dev Blogs
Welcome to the August 2025 edition of the Azure Developer CLI (azd) release blog! This post covers releases 1.18.1 and 1.18.2. To share your feedback and questions, join the August release discussion ...
Topics: Azure Azure DevOps .NET Core
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Exploring New LINQ Additions in C# 13: Index, CountBy, AggregateBy
Medium
C# 13 is just around the corner, and with it comes a few new LINQ methods to make our lives easier. As part of the .NET 9 release at .NET…
Topics: C# .NET 9 Source Generators
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Taming Generics, Interfaces & JSON in .NET — Meet JsonPolymorphic
marius-schroeder.de
Goodbye custom converters, hello clean polymorphic JSON in .NET 7+ Continue reading on Medialesson »
Topics: C# .NET Core System.Text.Json
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Global Exception Handling in ASP.NET Core: From Throw to ProblemDetails
Medium
Centralized error handling with ProblemDetails in ASP.NET Core
Topics: ASP.NET Core Security Web API
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Your Guide to Saving with Azure Hybrid Benefit
YouTube
• How to combine Azure Hybrid Benefit with Azure Reservations for greater savings, plus where to access learning resources and interactive demos • Reduce costs and increase SQL license utilization us...
Topics: Azure Azure DevOps SQL Server
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️ The .NET Roadmap to Mastery: From Blazor Newbie to Full-Stack Powerhouse
blog.venturemagazine.net
When I started working with .NET, I thought I only needed to know C# and click “Build.” Spoiler alert: .NET is an entire universe — and if… Continue reading on Venture »
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C# Memory Leak
C# Corner
Learn how to prevent memory leaks in C# caused by static event handlers. This guide explains IDisposable, SafeSubscriber, and best practices for managing event subscriptions and garbage collection in ...
Topics: C# Performance Solid Principles
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Rate Limiting in ASP.NET Core — Protect Your APIs Like a Pro
Medium
Learn how to implement rate limiting in ASP.NET Core to protect your APIs from abuse, DDoS attacks, and excessive usage. Includes native…
Topics: ASP.NET Core Security Web API
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🔴 VS Code Live - Vibe-hack VS Code with Joyride and Copilot
YouTube
Demo links and resources: https://github.com/PEZ/joyride-at-vscode-live ️ Featuring: Liam Hampton; Peter Strömberg (@pappapez)
Topics: GitHub Copilot Visual Studio Code
Read article.NET framework to .net core conversion automated
Medium
Upgrading from .NET Framework to the latest .NET is not just a technological shift; it’s a strategic move to future-proof your…
Topics: .NET Core .NET Framework
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5 Advanced String Tricks That Will Instantly Level Up Your Code
blog.stackademic.com
Utilize these modern patterns to conserve memory, prevent bugs, and enhance performance. Continue reading on Stackademic »
Topics: C# Performance
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Webhooks in .NET 9
Medium
Webhooks are essential for modern applications, enabling real-time event-driven communication between services. This comprehensive guide…
Topics: ASP.NET Core .NET 9 Web API
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Getting Started with C# and .NET: A Beginner’s Guide
blog.williamachuchi.com
Introduction to C#
Read articleGitHub Copilot vs ChatGPT: Which One Should Developers Use?
C# Corner
Confused between GitHub Copilot and ChatGPT? Learn the key differences, strengths, and use cases for each AI tool to decide which is best for your coding workflow.
Topics: GitHub Copilot OpenAI
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Using CosmosDB in .NET for Scalable NoSQL Applications
Medium
Building High-Performance, Globally Distributed NoSQL Apps with Azure Cosmos DB and .NET Core Continue reading on Simform Engineering »
Topics: Azure Cosmos DB .NET Core
Read article🔐 What is Zero-Knowledge Proof?
C# Corner
Learn what Zero-Knowledge Proof (ZKP) is, how it works, and why it’s becoming a core part of blockchain and Web3 security. Explore real-world use cases, advantages, and examples explained simply for d...
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Scheduling Messages with Brighter V10 and Quartz.NET
Medium
In my journal to cover all Brighter feature, I’ve already talked about Hangfire. Now I want to talk about Quartz.NET scheduler with…
Topics: Kafka RabbitMQ Service Bus
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Life Tracker — A .NET App 3: NUnit testing
Medium
It’s been a while since I last published a piece on LinkedIn. I wrote the draft of this post more than a month ago. Life in the new job…
Topics: C# Unit Testing xUnit.net
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