nexus/sreweekly/markdown/37/05-gh-ost-github-s-online-schema-migration-tool-for-mysql.md

gh-ost: GitHub’s online schema migration tool for MySQL

• 期号: SRE Weekly Issue #37（2016-08-28）
• 作者: —
• 链接: http://githubengineering.com/gh-ost-github-s-online-migration-tool-for-mysql/

简介

Other online schema-change tools I’m familiar with (e.g. pt-online-schema-change) use triggers to keep a new table in sync with changes while copying old rows over. Instead, gh-ost monitors changes by hooking on as a replication slave. Very clever! This article goes into several reasons why this is a much better approach.

正文

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