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This article explains MySQL's multi-version concurrency control (MVCC), describing how version chains, undo logs, and ReadView work together to implement isolation levels, prevent dirty reads, non‑repeatable reads, and phantom reads, and how RC and RR isolation differ in practice.
This article explains InnoDB's Multi-Version Concurrency Control (MVCC) mechanism, detailing undo log, readview, hidden columns, visibility algorithms for RR and RC isolation levels, and includes source code snippets illustrating read view assignment and visibility checks.
This article explains MySQL's MVCC mechanism, detailing how multi-version concurrency control, undo logs, and ReadView work together to implement isolation levels, prevent dirty reads, non-repeatable reads, and phantom reads, and compares the behavior of Read Committed and Repeatable Read.
This article explains InnoDB's Multi-Version Concurrency Control (MVCC) architecture, detailing row formats, undo log types, ReadView visibility rules, purge processes, and related concepts such as semi-consistent reads and index condition pushdown, with code examples and diagrams illustrating each mechanism.