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The Clicks We Throw Away

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
L4

Interview Prompt

Our platform team captures user interactions across our apps but right now the events go into a log file and get discarded. We want to build a proper clickstream pipeline that captures these events, processes them, and makes them available for product analytics and debugging. Design the clickstream data processing pipeline.

Summary

Every tap, swipe, and scroll. At scale.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your pipeline design solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

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