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// notes from the build

Writing

Notes from the build: what broke, why, and what I'd do next time. Articles, short notes and build logs from the things I'm making.

  1. ArticleOCT 4, 2026

    How Shopify stopped selling the last hoodie twice

    Shopify moved checkout holds from Redis into plain MySQL to close a gap between two databases, then kept it fast by storing one row per unit and claiming rows with SKIP LOCKED. The bug, the fix, the trick, and four things that only show up under load.

    System design · MySQL · Databases

  2. Case study2026

    Namestead

    Free identity subdomains on community-funded domains. Sign in, claim yourname.devportfolio.com and go live in seconds.

  3. Case study2026

    Devure JSON

    A free, local-first JSON workspace: viewer, diff, JSONPath, schema validator and converters. Nothing you paste leaves the browser.

  4. Case study2026

    Donabe

    A scroll-driven 3D brand site for a concept lager. The can gets colder as you scroll, and almost every asset is generated in code.

  5. Case study2026

    Sir Orrick's

    A scroll-told brand site for a concept Irish beer and whiskey: one 3D object stays on stage through rain and sun, and the bottle's glass and whiskey are traced ray by ray.

  6. Case study2026

    Shorts Studio

    Paste a YouTube link, get a publish-ready Short: transcription, clip picking, framing, captions and scheduled uploads on one GPU.