The Same Stream Twice
A hard 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
- hard
- Seniority
- senior
Interview Prompt
What pipeline carries about 2 billion playback heartbeats a day from 150 million subscribers to two readers at once: an on-call page when a title starts rebuffering in a region, and a daily studio royalty report on exact minutes-watched?
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