mats.coffee
writinggithublinkedin

Hoi, I’m Mats.

Software engineer in The Hague. I like taking things apart (video doorbells, Java bytecode, the Dutch housing market) and writing down what I find, usually powered by an irresponsible amount of Red Bull.

✱ my favourite writing

  • Saying goodbye to Java rebuilds, hello to JavaScript (but still in the JVM)

    15 Jul 2025 · 20 min

  • Keeping Track of Mojang's Enforcement Actions

    21 Oct 2025 · 9 min

  • COBALT: Building a 200x Faster Entity Engine from Minecraft Protocol

    10 Jul 2022 · 11 min

  • Goomba: Portable hermetic CGO build orchestrations for PC, Mac and Linux

    10 May 2026 · 9 min

  • Meteor: Interfaces as networking contract

    2 Jul 2025 · 6 min

  • The magic of time prediction

    29 Dec 2025 · 6 min

todo:
☑ buy more Red Bull
☐ sleep

Mats Moolhuizen
ya boi

useful links

  • pixelib.dev ↗
  • repo.pixelib.dev ↗
  • rivet.games ↗

thoughts ’n scribbles

  • The Cost of One Bit: Packed Boolean Computation on x86-64

    20 Jul 2026

  • Grace: Encrypting Java Bytecode at Rest Without Runtime Cost

    1 Jul 2026

  • Protecting customer media sources with asymmetric encryption

    15 May 2026

  • Migrating from Cloudflare D1 to Hyperdrive

    8 Nov 2025

  • Hacking the housing market

    18 Jul 2025

  • Dutch Rail Data Heist: Real-Time Metrics, APIs, and Commuter Chaos

    16 Jul 2025

all posts →
© 2026 Mats Moolhuizen · pinned up in The Hague