Sixty Minutes, Every Hour
A medium 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
- medium
- Seniority
- L6
Interview Prompt
We run an OLTP system that powers a customer-facing application, and the analytics team needs that data in the warehouse refreshed every hour without their queries ever touching the production database. The dashboards run a few minutes after each hour and can't see an hour where some tables have updated and others haven't, and when the pipeline is down for a stretch the catch-up run has to restore the warehouse without losing or double-counting rows.
Summary
Every hour, on the hour. No excuses.
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