Hands-on notes on data platforms

Practical write-ups from building and running data platforms: how to set things up, why they break, and what the numbers say. Starting with how this site itself is deployed.

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How-to
Set something up, with the traps on the way
Deep dive
How a piece of the stack behaves underneath

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Hugo on Cloudflare Pages: a private repo deployed to a custom domain, and the dangling DNS record that let a stranger use that domain first.

Browse by tag: Platform · Cloudflare · GitHub · Hugo · DNS · all tags

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Deploying Hugo from a private GitHub repo to Cloudflare Pages

11 October 2026·4 mins

Platform How-to Cloudflare Hugo GitHub

A private repo with a theme submodule, live on Cloudflare Pages and a custom domain: four hand-offs, about 50 s to deploy and 40 s more for the domain.

How a dangling DNS record let a stranger serve my domain

11 October 2026·4 mins

Platform Deep dive GitHub Cloudflare DNS

Four A records left pointing at GitHub Pages and an unverified domain let any GitHub account serve a page on vinhdata.com. How to check yours and close it.

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