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A dating app reports matches per city, grouped by a canonical city list. The city on a match is free text somebody typed into their profile years ago, so "London", "london " and "LONDON" are all in there. Seven per cent of matches never appear in the report, and the job has never failed.
The cadence, and who is waiting.
Practice studio
Run the review to check your architecture against this scenario — a valid DAG, a trigger for the freshness SLA, a transform stage, a quality gate before publish, and a failure path — then defend it in a short interview.
This scenario runs a full workspace — editor, canvas and results side by side. It needs a laptop or desktop to be usable. Open this page on a bigger screen to start building.