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Cache Efficiency

A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
hard

Interview Prompt

The infrastructure team wants each edge location compared to the global baseline. For each edge, show its request count, its local cache-hit percentage, and the overall cache-hit percentage across all edges repeated on every row for easy comparison.

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 sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision