Thanks for the background :) Lock behaviour of migrations are indeed very important to be aware of. Braintree (which are heavy Postgres users) have a pretty g

Thanks for the background :) Lock behaviour of migrations are indeed very important to be aware of. Braintree (which are heavy Postgres users) have a pretty good post on that - https://medium.com/paypal-tech/postgresql-at-scale-database-schema-changes-without-downtime-20d3749ed680 https://medium.com/paypal-tech/postgresql-at-scale-database-...