Three Providers, One Workout

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

Domain

Pipeline Design

Difficulty

hard

Seniority

L5

Problem

We run a connected-fitness platform that ingests workout events from three external providers, each with its own data format and delivery mechanism, and the same session often arrives from more than one provider at once. Finishing a workout is the user-facing reward, so a completed session has to reach the leaderboard within about a minute and count once no matter how many providers reported it. Heart rate and GPS are protected health data: they cannot sit on the leaderboard's own store, only permissioned consumers may read them, and every read of the raw fields has to be audit-logged.

Summary

The same ride, reported three times.

Practice This Problem

Solve this Pipeline Design problem with real code execution. DataDriven runs your solution and checks it automatically.