Mastering FastAPI Background Tasks: Real‑World Patterns, Testing, and When to Reach for Celery

Introduction If you’ve built a FastAPI endpoint that needs to send a confirmation email, generate a PDF, or kick off a long‑running data import, you probably reached for the fastapi background task feature. The BackgroundTasks class lets you offload work that doesn’t have to block the HTTP respo...

Source: [Dev.to](https://dev.to/ayush_kumar_085a0f2c54e3f/mastering-fastapi-background-tasks-real-world-patterns-testing-and-when-to-reach-for-celery-22o8)