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Answer: 90th percentile 120ms with 95th percentile 275ms
The question revolves around establishing SLOs based on existing performance metrics. Google advises against setting targets solely based on current performance, advocating instead for starting with more achievable goals that can be gradually tightened. This approach is preferable to setting overly ambitious targets that may need to be relaxed later. Reference: 'Don’t pick a target based on current performance' and 'Perfection can wait' – https://sre.google/sre-book/service-level-objectives/
Author: LeetQuiz Editorial Team
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When defining Service Level Objectives (SLOs) for a high-traffic multi-region web application with satisfied customers regarding its performance and availability, based on current measurements showing the 90th percentile of latency at 120ms and the 95th percentile at 275ms over a 28-day window, which latency SLO would you recommend publishing?
A
90th percentile 100ms with 95th percentile 250ms
B
90 percentile 150ms with 95 percentile 300ms
C
90th percentile 120ms with 95th percentile 275ms
D
90 percentile 250ms with 95 percentile 400ms
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