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The Code Brew's Weekly Newsletter - Week 21

Welcome back to The Code Brew! ☕ After a short break last week, I'm back with your weekly dose of dev news. Big updates this week: Vercel introduced the new v0 and Sandboxes are now GA. In the architecture world, Martin Fowler is talking about Context Engineering, and Code Opinion warns that your idempotent code might be lying to you. Plus, Cloudflare stopped a record 31.4 Tbps DDoS attack, and we have a guide on theming VS Code without the hassle. Dive in!

This Week’s Favourites

Code that fits in a context window - Ploeh Blog

No-Hassle Visual Studio Code Theming: Building an Extension - CSS Tricks Blog

Your Idempotent Code Is Lying To You - Code Opinion

Dotnet, C#, Azure

February 2026 Insiders (version 1.110) - Visual Studio

.NET Framework 3.5 Moves to Standalone Deployment in new versions of Windows - Microsoft Dotnet Blog

Deploy Azure Monitor Baseline Alerts using Enterprise Policy as Code - Cloudtips blog

Containerize Your .NET Applications Without a Dockerfile - Milan Jovanovic Blog

Building a Greenfield System with the Critter Stack - Jeremy D. Miller Blog

AI

Context Engineering for Coding Agents - Martin Fowler Blog

Continuous AI in practice: What developers can automate today with agentic CI - Github Blog

AI Writes Code 3x Faster. So Why Aren’t We Shipping 3x Faster? - Builder.io Blog

Use Claude Opus 4.6 on AI Gateway - Vercel blog

The Vercel AI Accelerator is back with $6m in credits - Vercel blog

Pick your agent: Use Claude and Codex on Agent HQ  - Github Blog

Parallel joins the Vercel Agent Marketplace - Vercel blog

Exploring the (underwhelming) System.Diagnostics.Metrics source generators: System.Diagnostics.Metrics APIs - Part 2 - Andrew Lock Blog

Introducing the new v0 - Vercel blog

Subagents: When and How to Use Them - Builder.io Blog

How to maximize GitHub Copilot’s agentic capabilities - Github Blog

Assistloop joins the Vercel Agents Marketplace - Vercel blog

Google’s AI advantage: why crawler separation is the only path to a fair Internet - Cloudflare blog

cubic joins the Vercel Agents Marketplace - Vercel blog

Making agent-friendly pages with content negotiation - Vercel blog

Misc

CSS Bar Charts Using Modern Functions - CSS Tricks Blog

2025 Q4 DDoS threat report: A record-setting 31.4 Tbps attack caps a year of massive DDoS assaults - Cloudflare blog

Developer Update - February 2026 - Supabase GitHub Release

Weekly Update 489 - Troy Hunt Blog

Fragments: February 4 - Martin Fowler Blog

Parallel’s Web Search and tools are live on Vercel - Vercel blog

Build logs now support interactive links - Vercel blog

No Hassle Visual Code Theming: Publishing an Extension - CSS Tricks Blog

What the fastest-growing tools reveal about how software is being built - Github Blog

Improve global upload performance with R2 Local Uploads - Cloudflare blog

The Vercel OSS Bug Bounty program is now available - Vercel blog

Python 3.13 and 3.14 are now available - Vercel blog

Run untrusted code with Vercel Sandbox, now generally available - Vercel blog

What’s !important #4: Videos & View Transitions, Named Media Queries, How Browsers Work, and More - CSS Tricks Blog

Building vertical microfrontends on Cloudflare’s platform - Cloudflare blog

Vercel Sandboxes are now generally available - Vercel blog

YouTube Videos

Is .NET Really Underrated in 2026? Well… - Nick Chapsas Youtube

Should I learn AI? - John Savill Youtube

Azure State of the Union 2026 - John Savill Youtube

Azure Update - 30th January 2026 - Hotel edition :-) - John Savill Youtube