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Efficient Ops
Efficient Ops
Nov 13, 2023 · Databases

Understanding MySQL Parallel Replication: From Lag to Group Commit

This article explains why master‑slave lag occurs in MySQL, describes the evolution of parallel replication schemes—including group‑commit, Commit‑Parent‑Based, Lock‑Based, and WRITESET approaches—shows benchmark results, and provides practical configuration steps to enable high‑performance parallel replication.

BinlogMySQLPerformance Benchmark
0 likes · 19 min read
Understanding MySQL Parallel Replication: From Lag to Group Commit
Aikesheng Open Source Community
Aikesheng Open Source Community
Sep 2, 2019 · Databases

Understanding MySQL Write‑Set Based Parallel Replication and Last‑Commit Handling

This article explains MySQL's write‑set based parallel replication, detailing how writeset hashes are generated, stored in a historical map, and used to adjust the last‑commit value for improved parallel replay, including configuration parameters, code examples, and the impact of different dependency‑tracking modes.

BinlogDatabase InternalsMySQL
0 likes · 15 min read
Understanding MySQL Write‑Set Based Parallel Replication and Last‑Commit Handling