Eight Teams, Eight Latencies
A medium Pipeline Design mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Pipeline Design
- Difficulty
- medium
- Seniority
- L5
Interview Prompt
The streaming bill tripled after every player event moved onto real-time jobs, and the platform lead points out that most of the eight teams reading them only look at next-day numbers. Design the pipeline for about 3 billion events a day from 200 million players: matchmaking, trophy unlocks, in-game purchases and session telemetry.
Summary
Millions of gamers. The architecture decision changes everything.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Draw your pipeline on the design canvas: sources, transforms, storage and checks
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision