In shortOld craft, new data / Test early / Test what matters / Alert on trends.
1. Old craft, new data
Farmers shine a light through the egg to find cracks. We shine tests through the data to find nulls and duplicates.
2. Test early
Catch problems at ingestion, not in the dashboard. The earlier you candle, the cheaper the fix.
3. Test what matters
Do not write 500 checks. Write 20 that would make you panic if they failed.
4. Alert on trends
A table that slowly worsens is more dangerous than one that fails loudly. Track failure rates over time.
Written by Dolores Peckham, Head of Data and AI. Disagree? Tell us. We read every message, usually before the second coffee.