Two Systems, One Room Count
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
- L6
Interview Prompt
Our booking pages and analyst reports disagree on which hotel rooms are free, since partners update both a legacy on-prem inventory database and a newer cloud one, each with its own schema. Design how both feed one inventory view, at a peak of about 5,000 updates per second across 2 million rooms.
Summary
Two booking systems. Rooms do not duplicate themselves.
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