A Million Moving Dots

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

Domain

Pipeline Design

Difficulty

medium

Seniority

mid

Problem

We run a delivery marketplace where every active courier streams a location ping every few seconds, tens of billions of events a day at peak. Customers need a live map and ETA that updates within seconds of each ping, while finance settles courier payouts and merchant fees once a day and cannot tolerate a double-counted or dropped delivery. Design the platform that serves both the live tracking and the exactly-once daily settlement off the same firehose.

Practice This Problem

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