hard20 pts · first answer countsperformance-testingcachingbottleneck-analysis

Spikes every ten minutes

In a steady load test, DB CPU and p99 latency spike sharply every 10 minutes. All product cache entries were loaded together and have a 10-minute TTL. What is the cause and a fix?

A.Mass cache expiry sends all requests to the DB; add TTL jitterB.The load generator pauses every 10 minutes; restart itC.The database runs backups every 10 minutes; ignore itD.The CDN purges its cache; turn off the CDN

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Spikes every ten minutes

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