writing — flat reverse chron
Things I wrote down so I wouldn't lose them.
Notes on backend systems, mostly. Go, MongoDB, ClickHouse, K8s. Some pieces are postmortems. Some are arguments with my past self. Most are short.
2026
jun 01 Stop Testing Timeouts with sleep(): The 3-Layer Local Simulation Stack infra → apr 29 The Invisible Name Check: How Europe Caught Up to DuitNow payments → apr 16 The Ghost in the Switch: Why payments engineers have been running sagas for 40 years payments → apr 11 The Anatomy of a Card Tap: What Happens in 1 Second payments → — EOF —