This article offers an exhaustive, version-by-version breakdown of MySQL's evolution from 2015's 5.7 GA to 2026's 9.7 LTS. The author meticulously documents over 80 minor versions, tracing InnoDB's transformation from a tightly coupled, centralized storage engine to a modular, hardware-aware architecture. Key milestones include the separation of the data dictionary, the splitting of undo tablespaces, and the introduction of doublewrite buffer enhancements. For database engineers and architects, this serves as a definitive roadmap for understanding MySQL's internal changes and planning upgrade paths. The analysis is technically rigorous, providing concrete version numbers and feature introductions, making it a valuable reference for long-term infrastructure planning. The article's depth and breadth make it a must-read for anyone managing MySQL at scale.
A comprehensive analysis of MySQL's architectural evolution from 5.7 to 9.7, focusing on InnoDB's modularization and hardware adaptation.