What functional tasks have you implemented using Celery in your projects?

Using Celery in projects, I implemented asynchronous execution of tasks that do not require an immediate user response. For example:

• Sending email notifications after registration or order.
• Processing and uploading large files in the background.
• Scheduling periodic tasks (similar to cron) for data updates.
• Performing long computations or integrations with external APIs without blocking the main thread.

Example of an email sending task:

from celery import Celery

app = Celery('tasks', broker='redis://localhost:6379/0')

@app.task
def send_email(to, subject, body):
    # email sending logic
    pass

# calling the task
send_email.delay('user@example.com', 'Hello', 'Thank you for registering!')