What is cache stampede?
Practice this question from Quiz: Redis Cache Design for Interviews, with options and an explanation.
Question
What is cache stampede?
Option A — Correct answer
Many requests hit the database when a popular cached key expires
Option B
Redis storing too many small keys
Option C
A database replica becoming primary
Option D
A Kafka consumer lag spike
Explanation
Stampedes can overload the database after a hot key expires.