Backend Migration Standards

About

Guides the creation of safe, robust, and reversible database migrations to ensure schema evolution without disrupting live applications. This skill provides standards for structuring migration files, managing schema changes like adding or removing columns, creating non-locking indexes, and handling large data transformations. It emphasizes zero-downtime deployment strategies, making it essential for any developer modifying database structures in a continuous integration and deployment environment.

Key Features

• Separates schema changes from data migrations for clarity and safety.
• Enforces reversible migrations with mandatory, tested rollback methods.
• Defines clear naming conventions and structured organization for migration files.
• Provides zero-downtime deployment strategies for backwards-compatible schema changes.
• Mandates safe, concurrent index creation on large tables to avoid write locks.
• 213 GitHub stars

Use Cases

• Implementing a complex data transformation script that must run in batches and be idempotent.
• Adding a new column to a high-traffic production table without causing downtime.
• Rolling back a failed database deployment safely and predictably.