At sufficient scale everything fails all the time, and the only real feature is being able to watch it happen.

_{— me, to a 🦆}

I work on the metric backend of Checkmk, its data backend for OpenTelemetry metrics that lets it monitor applications, not just infrastructure.
Before that I was at SAP, building the CI/CD infrastructure for HANA (their in-memory database): a graph-based task execution framework running on ~2000 compute nodes spread across multiple cloud providers and regions.

since 2021            csshW: broadcast your keystrokes to all your SSH sessions (successor: cssh-rs)
PyConDE '25            Rustifying Python: what's worth moving to Rust, and what will go wrong

2026-09-02 18:35 CEST  whmade/cssh-rs             client: tint client state via the…
(today)                whmade/cssh-rs             _{566 commits · 117 pull requests · 151 issues}

2026-09-02 12:26 CEST  Checkmk/checkmk            graphing: speak the shared consolidation…
(today)                Checkmk/checkmk            _{473 commits}

2026-09-02 12:26 CEST  Checkmk/checkmk            telemetry: speak the shared…
(today)                Checkmk/checkmk            _{473 commits}

2026-08-22 09:38 CEST  whme/bg3-name-your-summons docs: point the install step at the…
(2 weeks ago)          whme/bg3-name-your-summons _{111 commits · 100 pull requests · 56 issues}

_{Last 30 days}

Lua 47.2% (11.2k) · TypeScript 12.9% (3.1k) · Rust 12.8% (3k) · Vue 11.0% (2.6k) · PowerShell 8.8% (2.1k) · Python 5.7% (1.3k) · Other 1.5% (360)

_{All time}

JavaScript 24.9% (71.3k) · Python 24.4% (70k) · TypeScript 14.3% (41k) · Rust 13.4% (38.3k) · Vue 10.8% (31k) · Lua 5.0% (14.4k) · Other 7.1% (20.3k)

_{Last updated 2026-09-02 19:10 CEST.}

_{Everything above refreshes every few hours via a small workflow. Here's how it's computed.
The 🦆 is maintained by hand.}