New tool: GitHub's online schema migration for MySQL

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Shlomi Noach from the the Github engineering team posted the release of a new tool for triggerless online schema migration with MySQL. Although it's mostly targeted at databases using a replication architecture, if you don’t have replicas, or do not wish to use them, you are still able to operate directly on the master.
In spite of being a wonderful project and being used in production by Github's engineers, beware that it's still in an early stage and comes with documented limitations.
For instance, foreign keys not supported. On this matter you would better off using pt-online-schema-change from the Percona Toolkit.
The project is hosted at this repository and  is available in binary format for Linux and Mac OS/X. You can download the release here.

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