Load Testing · Senior · Question 31 of 76
A CDN purge happens during peak. What risk should a test reproduce?
- 1A thundering herd of cache misses hitting the origin at once
- 2The browser cache filling up on user devices
- 3The CDN serving pages faster right after the purge
Show the answer
Correct answer: A thundering herd of cache misses hitting the origin at once
Explanation
After a purge, every edge fetches from origin at the same time. Origin capacity, request collapsing and stale-while-revalidate determine whether it survives.