Database orm critical
SQLAlchemy 2.0 Async Patterns
Async database patterns with SQLAlchemy 2.0, AsyncSession, eager loading, repository implementation, and FastAPI integration.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
SQLAlchemy 2.0 async: create_async_engine with asyncpg, AsyncSession with expire_on_commit=False, explicit eager loading (selectinload/joinedload), lazy='raise' on relationships, one session per request, never share across asyncio.gather().
Use When
- Using SQLAlchemy 2.0+ with asyncio
- Building async Python applications
- FastAPI backends with database
- Implementing repository pattern in Python
Skip When
- Sync SQLAlchemy applications
- Using other ORMs (Prisma, Django ORM)
- Simple scripts without async
SQLAlchemy 2.0 Async Patterns
Async database patterns with SQLAlchemy 2.0, AsyncSession, eager loading, repository implementation, and FastAPI integration.