Live Viewers, Live Billing
A hard Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- hard
- Seniority
- L4
Interview Prompt
We run a live video platform where creators broadcast to thousands of viewers at once. The product team wants real-time viewer counts and chat activity for creators, and the ads team needs accurate impression data for billing. Design a data pipeline for our livestream events.
Summary
The stream is live. The data cannot wait.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision