[Solved] Consider this Celery task:@celery_app.task def add(x, y): return x + y What happens if you call add.apply_async(args=(2, 3), countdown=10)? | Flask

Flask - Background Tasks

Consider this Celery task:

@celery_app.task
def add(x, y):
    return x + y

What happens if you call add.apply_async(args=(2, 3), countdown=10)?

AThe task is scheduled but never executed.

BThe task will execute after a 10-second delay.

CIt raises an error because countdown is invalid.

DThe task executes immediately ignoring countdown.

Step-by-Step Solution

Solution:

Step 1: Understand apply_async with countdown
The countdown argument delays task execution by given seconds.
Step 2: Confirm behavior
Calling add.apply_async(args=(2, 3), countdown=10) schedules the task to run after 10 seconds.
Final Answer:
The task will execute after a 10-second delay. -> Option B
Quick Check:
apply_async with countdown delays task [OK]

Quick Trick: Use apply_async(countdown=seconds) to delay tasks [OK]

Common Mistakes:

MISTAKES

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