PROFESSIONAL-CLOUD-DATABASE-ENGINEER · Question #133
PROFESSIONAL-CLOUD-DATABASE-ENGINEER Question #133: Real Exam Question with Answer & Explanation
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Question
You are the Cloud Database Engineer for a retail analytics startup that runs a production Cloud SQL for MySQL instance supporting a product search API. Over the last 72 hours the average query latency during busy periods rose from about 90 ms to roughly 260 ms while CPU and memory metrics remain stable. You need a single step that most directly improves query execution without changing application code. What should you do?
Options
- AAdd more read replicas to the Cloud SQL instance
- BReview the slow query log and create or refine indexes for the worst performing queries
- CConvert tables from InnoDB to MyISAM
- DScale the Cloud SQL instance to a larger machine type with more vCPU and memory
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