Alembic Migration Patterns (2026)

Database migration management with Alembic for SQLAlchemy 2.0 async applications.

Overview

• Creating or modifying database tables and columns
• Auto-generating migrations from SQLAlchemy models
• Implementing zero-downtime schema changes
• Rolling back or managing migration history
• Adding indexes on large production tables
• Setting up Alembic with async PostgreSQL (asyncpg)

Quick Reference

Initialize Alembic (Async Template)