Professional Cloud DevOps Engineer

By Google · Question Mode

QuestionQ23

Implementing observability practices and troubleshooting issues

You need to establish SLOs for a high-traffic web application. Customers are currently satisfied with the application's performance and availability. Current measurements over a 28-day window show a 90th-percentile latency of 160 ms and a 95th-percentile latency of 300 ms. What latency SLO should you publish?

Explanation

Latency SLO thresholds should reflect the level of performance at which users are satisfied, with modest headroom above current observed percentile latency to accommodate ordinary variation. A 190 ms p90 target and a 330 ms p95 target retain a meaningful performance commitment without setting the objective exactly at the current baseline. Google Cloud guidance defines SLOs around user happiness and recommends 28 days as a starting measurement period.

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