A startup runs every storage job through one Postgres: app writes, analyst SQL scans, and a Looker d
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
A startup runs every storage job through one Postgres: app writes, analyst SQL scans, and a Looker dashboard all hit the same database. Analytical queries hold locks that block production transactions and full-table scans evict hot pages from the buffer cache. Apply the section's three-foundational-shapes framing and split the workload so each access pattern lands on the right shape; Postgres stays for the app.
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