My plan was to monitor the postgres database in the staging environment, so we can be alerted to schema changes before they are released into production (and hopefully stop the production deploy).

I have a goal of moving this even further upstream into the CI build for the source application itself (Ruby on Rails in this case), so that the application's test suite will fail a developer introduces a breaking schema change. Note: this is a pretty tricky problem to solve without a) the tests being way too brittle OR b) super slow end to end tests. I have some goals of introducing which is a mashup of: Spectacles [1], Pact [2], and dbt models [3].

[1] https://www.spectacles.dev [2] https://pact.io [3] https://docs.getdbt.com/docs/building-a-dbt-project/using-so...