RailsConf 2021: rails db:migrate:even_safer - Matt Duszynski

It's been a few years, your Rails app is wildly successful, and your database is bigger than ever. With that, comes new challenges when making schema changes. You have types to change, constraints to add, and data to migrate... and even an entire table that needs to be replaced. Let's learn some advanced techniques for evolving your database schema in a large production application, while avoiding errors and downtime. Remember, uptime begins at $HOME! Play