Cloud Architecture

Sep 19, 2026 · Databases

Beyond COUNT_STAR=0: Auditable MySQL Index Removal with performance_schema

This article presents a rigorous, production-ready framework for MySQL index governance that moves beyond simplistic zero-usage checks, using performance_schema observation windows, structural gatekeeping, invisible index canary testing, and quantified rollback metrics to safely identify and remove redundant indexes without risking query regressions.