Tencent Database Technology
Jan 19, 2023 · Databases
Atomic DDL Implementation in MySQL 8.0: Metadata Management and DDL Log Mechanisms
This article provides a comprehensive technical analysis of MySQL 8.0's atomic DDL implementation, detailing the transition from fragmented FRM-based metadata to a unified InnoDB Data Dictionary, and explaining how the DDL Log mechanism ensures crash-safe physical file operations during schema modifications.
Atomic DDLDDL LogData Dictionary
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