backend-migrations

Features and purpose

Create and manage database migrations following best practices for reversibility, zero-downtime deployments, and version control. Use this skill when creating migration files, modifying database schemas, adding or removing tables/columns, managing indexes, or performing data transformations. Apply when working on migration files (migrations/*.ts, migrations/*.sql, *_migration.py), Prisma schema changes, Supabase migrations, or any database evolution tasks. This skill ensures reversible migrations with rollback/down methods, small focused single-change migrations, zero-downtime deployment compatibility, separated schema and data migrations, safe concurrent index creation on large tables, clear descriptive naming conventions, and proper version control practices (never modify deployed migrations).

Quick start

Follow the repository instructions for this skill and your agent. Review the files and dependencies before adding it to your workflow.