Today we are happy to present Percona Migrator, an ActiveRecord adapter to run online MySQL schema migrations in Rails. Since we implemented it back in December 2014 it has gone through few stages but it has always been an essential part of our tooling at Redbooth.
![Percona Migrator Announcement | HackerNoon](https://cdn-ak-scissors.b.st-hatena.com/image/square/3c998f20579563413d0b5e1ac11a487bca103260/height=288;version=1;width=512/https%3A%2F%2Fhackernoon.imgix.net%2Ffallback-feat.png%3Fmark-pad%3D0%26mark%3Dhttp%3A%2F%2Fhackernoon.imgix.net%2FHackerNoon%2520Rounded%2520Horizontal.png%3Fw%3D400)