Retried Failed API Calls
A medium SQL 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
- SQL
- Difficulty
- medium
- Seniority
- L5
Interview Prompt
Reliability wants to catch clients that keep hammering an endpoint that keeps erroring back at them. From the api_calls log, count for each user and endpoint the calls that come back with an error shortly after that same user's previous call to the same endpoint, and return user_id, endpoint, and that retry count with the worst offenders on top.
Summary
Spot users who retry API calls within 5 minutes of a failure.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision