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The Code Brew's Weekly Newsletter - Week 11

Welcome back to The Code Brew! 🚀 This week's must-read: a 2-billion-email breach just hit Have I Been Pwned. In .NET news, the countdown to .NET Conf 2025 is on, EF Core 10 is getting LeftJoin, and AutoMapper/MediatR have new releases. The other big theme is AI Agents, with GitHub, Vercel, and Builder.io all shipping new tools and guides. Dive in!

This Week’s Favourites

An individual can change an organization - Phil Eaton Blog

Empirical Characterization Testing - Ploeh Blog

Explaining the Accessible Benefits of Using Semantic HTML Elements - CSS Tricks Blog

Dotnet, C#, Azure

Get Ready for .NET Conf 2025! - Microsoft Dotnet Blog

Easier reflection with [UnsafeAccessorType] in .NET 10: Exploring the .NET 10 preview - Part 9 - Andrew Lock Blog

How Copilot Studio uses .NET and WebAssembly for performance and innovation - Microsoft Dotnet Blog

Open Source AI Editor: Second Milestone - Visual Studio

The Critter Stack Gets Even Better at Testing - Jeremy D. Miller Blog

AutoMapper 15.1 and MediatR 13.1 Released - Jimmy Bogard

What’s New in EF Core 10: LeftJoin and RightJoin Operators in LINQ - Milan Jovanovic Blog

ArrayPool Benchmarks: We have a problem - Steven Giesel blog

Automating Custom Image Creation for Azure Managed DevOps Pools - Cloudtips blog

A Unified Experience for all Coding Agents - Visual Studio

Misc

2 Billion Email Addresses Were Exposed, and We Indexed Them All in Have I Been Pwned - Troy Hunt Blog

Fusion 1.0 - The First AI Agent for Product, Design, and Code - Builder.io Blog

The sweet spot for current generation agentic AI - Vercel blog

v4.1.17 - Tailwindcss GitHub Release

TypeScript’s rise in the AI era: Insights from Lead Architect, Anders Hejlsberg - Github Blog

What we learned building agents at Vercel - Vercel blog

GitHub Copilot CLI 101: How to use GitHub Copilot from the command line - Github Blog

Building a better testing experience for Workflows, our durable execution engine for multi-step applications - Cloudflare blog

How Workers VPC Services connects to your regional private networks from anywhere in the world - Cloudflare blog

Free BotID Deep Analysis through end of the year - Vercel blog

GitHub Copilot tutorial: How to build, test, review, and ship code faster (with real prompts) - Github Blog

The Best VS Code Extensions for 2026 - Builder.io Blog

Securing AI-Generated Code: What Does It Look Like in Practice? - Legit Security Blog

Free Vercel BotID Deep Analysis through January 15 - Vercel blog

Fragments Nov 3 - Martin Fowler Blog

Things I learned after speaking at my first Big International Conference - Code4IT

The Learning Loop and LLMs - Martin Fowler Blog

Build and deploy data applications on Snowflake with v0 - Vercel blog

Supercharging the ML and AI Development Experience at Netflix - Netflix Tech Blog

Weekly Update 476 - Troy Hunt Blog

The “Most Hated” CSS Feature: tan() - CSS Tricks Blog

How Fusion Turns AI Visual Development Into Measurable Productivity Gains - Builder.io Blog

Fresh insights from old data: corroborating reports of Turkmenistan IP unblocking and firewall testing - Cloudflare blog

Redirects and Rewrites now available in Observability - Vercel blog

Nvim 0.11.5 - Neovim GitHub Release

GitHub Game Off 2025 theme announcement - Github Blog

Beyond IP lists: a registry format for bots and agents - Cloudflare blog

Caching details now available in Runtime Logs - Vercel blog

Go and enhance your calm: demolishing an HTTP/2 interop problem - Cloudflare blog

Vercel Agent can now run AI investigations - Vercel blog

BGP zombies and excessive path hunting - Cloudflare blog

YouTube Videos

Big Breaking Changes in .NET 10 - Nick Chapsas Youtube

Multiple enumeration sucks in .NET - Nick Chapsas Youtube

Using Memory is awesome in C# - Nick Chapsas Youtube

ValueTask vs Task in .NET - Nick Chapsas Youtube

ArrayPool is awesome in .NET - Nick Chapsas Youtube

Quick Count is awesome in .NET - Nick Chapsas Youtube

Azure Update - 31st October 2025 - John Savill Youtube

Cool Null Assignment in C# - Nick Chapsas Youtube