Retried Failed API Calls

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L5

Problem

Reliability wants to spot clients retrying after errors. A retry is a call that comes within 5 minutes after the same user's previous call to the same endpoint when that previous call returned a non-200 status. Return user_id, endpoint, and the retry count, sorted by retry count descending, then user_id, then endpoint.

Summary

Spot users who retry API calls within 5 minutes of a failure.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.