2 to 3 was a more difficult update. If I recall correctly, a feature of 4 was th...

		jack_jennings on Sept 16, 2014 \| parent \| context \| favorite \| on: Upgrading GitHub to Rails 3 with Zero Downtime 2 to 3 was a more difficult update. If I recall correctly, a feature of 4 was that the upgrade path was more reasonable.