Migrating Code

Core Principles

1. Never break production - Backward compatible until fully rolled out
2. Small, reversible steps - Each step independently deployable
3. Test at every stage - Before, during, and after
4. Have rollback ready - Always

Migration Checklist

- [ ] Pre-Migration: Read changelog, identify breaking changes, ensure test coverage
- [ ] During: Small steps, test each, monitor errors, rollback ready
- [ ] Post: Verify tests, check metrics, remove scaffolding, update docs

Database Schema