Two years of event history sits in one hot warehouse table
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
Interview Prompt
Two years of event history sits in one hot warehouse table. 95% of queries touch the last 30 days, but the team pays hot-storage prices for all of it. Design tiered storage that keeps recent data fast and old data cheap, still queryable.
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