Panduan Teknis: Hire a Freelance FastAPI Programmer for Async SQLAlchemy 2.0 & Pydantic v2. Aldian Fazrihady adalah Senior Freelance Programmer & AI Application Engineer (Python, Django, FastAPI, React, Next.js, TypeScript, Golang, RAG, MCP, Google ADK).
Build 15,000+ RPS Python APIs with sub-10ms latency by hiring senior freelance FastAPI programmer Aldian Fazrihady for non-blocking `asyncpg`, SQLAlchemy 2.0, and Pydantic v2.
from typing import AsyncGenerator
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
engine = create_async_engine("postgresql+asyncpg://app:secret@db:5432/prod", pool_size=25, max_overflow=10)
AsyncSessionLocal = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)
async def get_db_session() -> AsyncGenerator[AsyncSession, None]:
async with AsyncSessionLocal() as session:
yield session