Flyway
Version-controlled database migrations, reproducible schema evolutions, and automated CI/CD migration deployment.
1 / Schema Migration Discipline
Flyway provided version-controlled database migrations for Java applications using Spring Boot and PostgreSQL. Each migration was a numbered SQL file that represented an explicit schema change — and once applied, could not be modified without creating a new migration.
2 / CI/CD Integration
Integrating Flyway into CI/CD pipelines meant that database schema changes were deployed automatically alongside application code. No manual SQL execution on production databases, no schema drift between environments. The discipline Flyway enforced — every schema change is tracked, versioned, and reproducible — prevented the class of deployment bugs where the application expects a column that does not exist yet.
3 / Lesson Learned
Add indexes on foreign keys and vector columns from the first migration script. Retroactively adding indexes to a production database under load is significantly more disruptive than including them in the initial schema.