Notes from the platform.
Engineering notes on autonomous development platforms, cloud development environments, AI coding agents, and the infrastructure that runs them.
Start at your level
422 posts, each written for one kind of reader. Pick the one that sounds like you.
Beginner
No background assumed. What a database, a domain or an environment variable actually is, and how to get an app you built with AI online and keep it there.
276 guides
Intermediate
For people who already ship. Claude Code workflows, deploys without downtime, Postgres in production, and the operational details that start to matter.
106 guides
Advanced
Under the hood: container isolation, cgroups, sandboxing untrusted code, and the architecture behind multi-tenant platforms.
40 guides
Latest posts
All 422 posts →"Your Connection Is Not Private" on Your Own Site: Causes and Fixes
When visitors see NET::ERR_CERT_DATE_INVALID, ERR_CERT_COMMON_NAME_INVALID or ERR_CERT_AUTHORITY_INVALID on your site, the SSL certificate is expired, for the wrong name, or incomplete. How to tell which, and how to fix each one.
Why Does AI Hallucinate? And How to Reduce It in Your App
AI models sometimes state false things with complete confidence. Why it happens — they predict plausible text rather than look up facts — the kinds of hallucination you'll meet in coding and apps, and practical ways to reduce it: grounding, tools, structure, checks and room to say 'I don't know'.
What Is WSL? Running Linux on Windows, Explained
WSL lets you run a real Linux system inside Windows without dual-booting or a separate virtual machine to manage. What it is, why web developers use it, how to install it, where your files live, and the performance and networking gotchas.
What Is Vercel? What It Does, What It Costs You, and When to Use Something Else
Vercel is a hosting platform built around frontend frameworks, especially Next.js: push to GitHub and your site is live. What it actually does, what serverless functions mean for your app, where the limits are, and when a regular server is a better fit.
What Is TypeScript? JavaScript With Labels, Explained for Beginners
TypeScript is JavaScript plus types: labels that say what kind of value each thing holds, checked before your code runs. What it looks like, why AI tools default to it, what .ts and .tsx files are, and how to read the red squiggles.
What Is Object Storage? S3, Buckets, and Where Your Files Should Live
Object storage keeps files as objects in buckets, reachable over HTTP — Amazon S3 is the original, and dozens of services speak the same API. How it differs from a hard disk, what buckets, keys and presigned URLs are, what it costs, and when your app needs it.
What Is Nginx? The Web Server in Front of Half the Internet
Nginx ("engine-x") is a web server that serves files, forwards requests to your app, handles HTTPS and balances load. What it does, what a basic config looks like, where the files live, the commands you'll need, and whether you need it at all.
What Is MongoDB? A Beginner's Guide to Document Databases
MongoDB stores data as flexible JSON-like documents instead of tables. How it works, what collections and documents are, where it shines, where Postgres is the better pick, and why AI tools sometimes reach for it.