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Part 5: ORMs, Databases & Background Workers (56 - 65)

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Python & FastAPI•Part 5: ORMs, Databases & Background Workers (56 - 65)

Celery Architecture: Broker & Result Backend:

In Simple Words:

  • Broker (RabbitMQ/Redis): Queues task messages.
  • Worker: Consumes and executes tasks.
  • Result Backend (Redis/DB): Stores task return values and statuses.
python
from celery import Celery

celery_app = Celery(
    'tasks',
    broker='redis://localhost:6379/0',
    backend='redis://localhost:6379/1'
)

@celery_app.task
def generate_pdf_report(user_id: int):
    return f"Report for user {user_id} generated."
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