The Velvet Rope
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
Implement per-user sliding-window rate limiting. Test harness input: ['label', max_requests, window_seconds, [[user_id, timestamp], ...]]. For each call, return True if the user has strictly fewer than max_requests allowed calls in the half-open window (timestamp - window_seconds, timestamp], else False. Each allowed call is recorded against that user.
Summary
Some users get in. Others wait outside until the window resets.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision