All challenges
Code AnalysisIntermediate 60s

Redis distributed lock expiry race

Analyze this lock: SET lock res NX PX 30000 <do work> DEL lock What serious bug occurs if work exceeds 30s?

Think you can answer under pressure?

Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.

Play this in a 3-minute battle