On-call engineers receive twenty quality pages a week

A medium Pipeline Design interview practice problem on DataDriven. Write and execute real pipeline design code with instant grading.

Domain

Pipeline Design

Difficulty

medium

Problem

On-call engineers receive twenty quality pages a week. Three of them are real. The remaining seventeen train the engineer to acknowledge alerts without reading them, and the next real page lands in the same channel as a false one and is missed. The fix is not removing checks; it is tuning thresholds against historical data so a useful threshold fires somewhere between two and ten times in a 90-day window. Tune the threshold by adding a threshold-tuning transform whose name states the historical window it backtests, the target firing rate (e.g., 2-10 fires per 90 days), and a known-anomaly annotation list so previously-investigated incidents do not retrigger.

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