Clean Cache CDN Edges

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

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

Which CDN edge locations are serving cached content cleanly? Find edges that had a cache hit with a successful HTTP status (below 400). Return only unique edge locations.

Summary

Cached, clean, error-free edges.

Practice This Problem

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