hard20 pts · first answer countsperformance-testingbottleneck-analysis

Which tier to fix first

At 1,200 rps, p95 latency breaches the SLO. Metrics: web tier CPU 40%, app tier CPU 45%, database CPU 96% with many slow queries. Adding app servers is proposed. What should you do?

A.Tune or scale the database first, since it is saturatedB.Add app servers as proposed, since they handle requestsC.Increase think time in the test scriptD.Add more load generators to push harder

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Which tier to fix first

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