Two Years of Clicks, Cheap
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
- L7
Interview Prompt
Our platform generates 600 million user interaction events per day through Kafka and we need a cost-efficient architecture to store and query this data for analytics with a two-year retention requirement. Query latency and storage cost are both first-class constraints. Design the end-to-end ingestion, storage, and query architecture.
Summary
Two years of clicks. Every query has to be affordable.
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