Tips & writing

Notes from the workbench

Practical engineering tips, design theory and performance breakdowns — written for developers and founders who like their advice tested in production.

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Engineering TipsSep 15, 2026

Localhost vs 127.0.0.1 in .env: The Bug That Only Appears on Windows

Same code. Same .env. Works on my Linux box, dies on the Windows server with ECONNREFUSED ::1:3306. Here's what localhost actually does under the hood, why 127.0.0.1 is not always the same thing, and the rules I now follow in every .env file.

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Beginner GuidesJul 30, 2026

Docker for Beginners: What It Solves and How to Start

Docker sounds complicated until you see the problem it solves. Images, containers, Dockerfiles and Compose explained simply, with a working Node.js example you can adapt to any stack.

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