Fine-tuning/backend/app/core/db.py

from app.config import get_settings

from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine

settings = get_settings()

engine = create_async_engine(
    settings.database_url,
    echo=settings.backend_env == "development",
)

async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)


async def get_db() -> AsyncSession:  # type: ignore[misc]
    async with async_session() as session:
        yield session