Create a Database Workload Replay Lab that helps developers investigate database performance using sanitized query logs and representative workload samples. Group queries by pattern, identify expensive execution plans, analyze query frequency, and compare baseline performance against proposed indexes or query rewrites. Provide a controlled replay mode using isolated test environments, synthetic data, or database-native explain plans where available. Track throughput, latency percentiles, resource consumption, and result consistency. Generate optimization recommendations with evidence and trade-offs. Protect sensitive query parameters, avoid replaying destructive statements by default, and never claim a query optimization is faster without measurements or a clearly labeled estimate.
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