Field Notes

Blog

Write-ups from real engagements and incidents. No hot takes, no launch posts — just the stuff I wish the last team had read before they called me.

2026-04-22 · 9 min read

Why most pg_dump cron jobs fail when you actually need them

Five failure modes I keep finding during backup audits, ranked by how badly they bite. None of them announce themselves until restore day.

Read →
2026-04-22 · 7 min read

RTO and RPO for the DACH mid-market, without the enterprise theatre

"Four hours" is not an RTO if you've never measured it. How to produce numbers that survive contact with a real outage — and which numbers actually matter to your board.

Read →
2026-04-22 · 8 min read

Hetzner Object Storage vs. AWS S3 for EU backup stacks

Cost, rate limits, durability guarantees, data-residency. A practical side-by-side based on running both in production, with the failure mode that made me shard key prefixes.

Read →