gh-ost

gh-ost

GitHub's online schema migration for MySQL

gh-ost allows for online schema migrations in MySQL which are:

• Triggerless
• Testable
• Pausable
• Operations-friendly

How?

WORK IN PROGRESS

Please meanwhile refer to the docs for more information.

What's in a name?

Originally this was named gh-osc: GitHub Online Schema Change, in the likes of Facebook online schema change and pt-online-schema-change.

But then a rare genetic mutation happened, and the s transformed into t. And that sent us down the path of trying to figure out a new acronym. Right now, gh-ost (pronounce: Ghost), stands for:

• GitHub Online Schema Translator/Transformer/Transfigurator

Authors

gh-ost is designed, authored, reviewed and tested by the database infrastructure team at GitHub:

• @jonahberquist
• @ggunson
• @tomkrouper
• @shlomi-noach