There are other articles for those interested: - https://blog.codeship.com/rails-migrations-zero-downtime/ https://blog.codeship.com/rails-migrations-zero-down

There are other articles for those interested: - https://blog.codeship.com/rails-migrations-zero-downtime/ https://blog.codeship.com/rails-migrations-zero-downtime/ - https://blog.engineyard.com/2011/zero-downtime-deploys-with-migrations https://blog.engineyard.com/2011/zero-downtime-deploys-with-... In the Ruby on Rails world, it's definitely a thing (made easier with attribute reader / writer, and db/migrations/)