What are the differences between Async SQLAlchemy and SQLAlchemy?

What are the differences between Async SQLAlchemy and SQLAlchemy?

Async SQLAlchemy is designed for asynchronous programming, allowing non-blocking database operations, while traditional SQLAlchemy is synchronous.

Can you give me an example of how to use Async SQLAlchemy?

Sure! Here's a simple example:

from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
from sqlalchemy.orm import sessionmaker

engine = create_async_engine('postgresql+asyncpg://user:password@localhost/dbname')
AsyncSession = sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)

async def async_main():
    async with AsyncSession() as session:
        # Your async database operations here

This sets up an async engine and session.

What are the benefits of using Async SQLAlchemy?

The main benefits include improved performance in I/O-bound applications, better resource utilization, and the ability to handle many concurrent connections.

Are there any limitations to Async SQLAlchemy?

Yes, some limitations include a smaller ecosystem of libraries that support async operations and potential complexity in managing async code.