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You support a consumer inventory application that runs on a multi-region instance of Cloud Spanner. A customer opened a support ticket to complain about slow response times. You notice a Cloud Monitoring alert about high CPU utilization. You want to follow Google-recommended practices to address the CPU performance issue. What should you do first?
Correct Answer: A
In case of high CPU utilization like, mentioned in question, refer: https://cloud.google.com/spanner/docs /identify-latency-point#:~:text=Check%20the%20CPU%20utilization%20of%20the%20instance.%20If% 20the%20CPU%20utilization%20of%20the%20instance%20is%20above%20the%20recommended% 20level%2C%20you%20should%20manually%20add%20more%20nodes%2C%20or%20set%20up% 20auto%20scaling. "Check the CPU utilization of the instance. If the CPU utilization of the instance is above the recommended level, you should manually add more nodes, or set up auto scaling." Indexes and schema are reviewed post identifying query with slow performance.Refer :https://cloud.google.com/spanner/docs /troubleshooting-performance-regressions#review-schema