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The best problem-solving writing in software engineering — databases, performance, security, frontend and distributed systems, in one feed.

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Security — Cloudflare deploys protections against php2shell vulnerability

Cloudflare deploys protections against php2shell vulnerability

Cloudflare has deployed default web application firewall (WAF) protections for newly disclosed PHP vulnerabilities before public disclosure. The rules use request and response signals to stop exploit attempts and prevent exposed data from reaching attackers.

DMDaniele Molteni·October 21, 2026Security
Frontend — The Future of CSS ✨

The Future of CSS ✨

Every year, browser vendors collaborate via the Interop project to synchronize their efforts on new HTML/CSS/JS features. This year, there’s a ton of super exciting features being considered! In this blog post, we’ll explore the CSS of the future, to get a glimpse of what we’ll soon be able to do.

JWJosh W. Comeau·October 20, 2026Frontend
Frontend — Embracing Playful Imperfection With The CSS `random()` Function

Embracing Playful Imperfection With The CSS `random()` Function

Design systems thrive on consistency, so where does randomness fit in? Through playful demos of organic typography, bouncing letters, and splayed cards, Brecht De Ruyte shows how the new CSS `random()` function brings a little imperfection to the web without JavaScript libraries or preprocessor loops that generate hundreds of lines of static CSS.

SMSmashing Magazine·October 20, 2026Frontend
AI & ML — GenRecs Tokenization: Transforming Ads Recommendation at Meta with Stable Model Vocabulary

GenRecs Tokenization: Transforming Ads Recommendation at Meta with Stable Model Vocabulary

Generative Recommenders (GenRecs) represent a paradigm shift from scoring every ad to reasoning about ad content and user preferences together in order to predict the best outcome for advertisers. Leveraging the world knowledge built into LLMs makes ad matching more intelligent and precise, compounding gains for advertisers. GenRecs Tokenization is the foundational data representation that [...] R

MEMeta Engineering·October 19, 2026AI & ML
AI & ML — The Thin Orchestrator: How We Made Our AI Agents More Reliable by Giving the Router Less to Do

The Thin Orchestrator: How We Made Our AI Agents More Reliable by Giving the Router Less to Do

Sometimes, giving an AI agent all of the knowledge it needs is the wrong approach. At Meta, we’ve seen notable improvements in efficiency and accuracy by keeping the orchestration layer of our data pipeline agents deliberately thin: It routes work and enforces reliability checks, while specialized agents do the domain reasoning. We’re sharing our own [...] Read More... The post The Thin Orchestrat

MEMeta Engineering·October 19, 2026AI & ML
SRE & Ops — Inside Prometheus: Meta’s Journey to a Gigawatt-Scale Supercluster

Inside Prometheus: Meta’s Journey to a Gigawatt-Scale Supercluster

With the recent release of the Muse family of foundational models, we want to take you inside the infrastructure that has made it all possible. The first phase of Prometheus, our gigawatt-scale supercluster, is already complete and we’re working toward scaling it to comprise ~1 million GPUs. Prometheus also features technologies like closed-loop liquid cooling [...] Read More... The post Inside Pr

MEMeta Engineering·October 19, 2026SRE & Ops
Engineering — Notes on the complex roots of unity

Notes on the complex roots of unity

One of the most wonderful aspects of math is how deep we can get by studying seemingly trivial questions. Consider the roots of unity, where "unity" simply means the number 1. Basics: roots of unity for real numbers Studying the roots of unity usually begins in middle school: what is …

EBEli Bendersky·October 17, 2026Engineering
AI & ML — Continuous accountability for Verified bots

Continuous accountability for Verified bots

Identity alone doesn't guarantee a bot will behave responsibly. We are introducing a system to continuously evaluate whether Verified bots honor site preferences, like robots.txt and HTTP 429s, ensuring they remain accountable over time.

CTChris Tsoukaladelis·October 16, 2026AI & ML
AI & ML — Is Your Organization Messing Up AI Adoption?

Is Your Organization Messing Up AI Adoption?

What can digital transformation teach us about AI adoption? Paul Boag revisits his book Digital Adaptation to show how lessons from the past can help organizations navigate the challenges of AI today. - AI - Workflow - Business

SMSmashing Magazine·October 16, 2026AI & ML