OpenTenBase/TXSQL

扩展binlog的row image

Open

#23 opened on Aug 7, 2025

View on GitHub
 (0 comments) (0 reactions) (0 assignees)C++ (224 forks)auto 404
good first issue

Repository metrics

Stars
 (331 stars)
PR merge metrics
 (PR metrics pending)

Description

binlog在参数binlog_row_image为full时，会记录一个记录的完整镜像。比如update，会记录完整的前后镜像数据，有较多的冗余数据。增加一种binlog_row_image的格式，只记录原镜像及新镜像中的变化数据，以减少对存储空间的占用。

Contributor guide

Research direction
Study the binlog row image implementation in TXSQL, design the new format to log only changed columns, and implement the changes.
Tech stack
None
Domain
database
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C++MySQL internals
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20