TL;DR: Here's the scenario that's burned me — and almost every backend dev I know — at least once: you push a migration that renames a column or adds a NOT NULL constraint. Your CI pipeline goes green. 📖 Reading time: ~39 min What's in this article The Problem: Why Database Migrations Are Still the Scariest Part of a Deploy The Classic Failure Mode Nobody Warns You About The Mental Model You Need Before Writing a Single YAML File Tooling Choice: Flyway vs Liquibase in a Kubernetes World Flyway vs Liquibase: Pick One and Commit Pattern 1: Running Migrations as a Kubernetes Job Before Deployment Pattern 2: Init Containers — When You Want Migrations Tightly Coupled to the Pod The init container runs first, then your app — that's the whole mechanic, and it's deceptively useful The Problem: Why Database Migrations Are Still the Scariest Part of a Deploy The Classic Failure Mode Nobody Warns You About Here's the scenario that's burned me — and almost every backend dev I know — at least once: you push a migration…