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Jun 6, 2024 · Databases

Why MySQL CPU Spiked to 400%: A Real‑World SQL Optimization Case Study

A startup’s production MySQL server hit 400% CPU usage due to poorly written queries with temporary tables, filesorts, and join buffers, prompting a deep dive into execution plans, concrete optimization recommendations, and a rollback strategy to restore service.

CPU overloadMySQLProduction Incident
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Why MySQL CPU Spiked to 400%: A Real‑World SQL Optimization Case Study