This is very cool! I no longer work on Rails on daily basis, but would have loved to have this. I built something similar called `pg-osc` / `pg-online-schema-c

This is very cool! I no longer work on Rails on daily basis, but would have loved to have this. I built something similar called `pg-osc` / `pg-online-schema-change` for PostgreSQL workloads. It does zero downtime migrations using triggers and shadow table. Github: https://github.com/shayonj/pg-osc https://github.com/shayonj/pg-osc. Blog: https://www.shayon.dev/post/2022/47/pg-osc-zero-downtime-schema-changes-in-postgresql/ https://www.shayon.dev/post/2022/47/pg-osc-zero-downtime-sch... Also love that this is written in Ruby :). Going to check it out on some side projects.