Developing an app is exciting until your relational database starts breaking things you didn’t know could break. At first, it’s the basics: race-condition overwrites, missing foreign keys, and rollback scripts after a bad deployment. You fix things, your app gains traction, and then the real trouble starts. Simple queries slow to a crawl, migrations lock tables for minutes, and regional replicas start lagging. Even if you muscle through that, there’s another wave of problem waiting ...