Django - Celery and Background Tasks
Consider a Celery task that retries on failure with exponential backoff. Which code snippet correctly implements this behavior?
Consider a Celery task that retries on failure with exponential backoff. Which code snippet correctly implements this behavior?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand exponential backoff
Exponential backoff means delay doubles each retry: 2^retry_count.Step 2: Check code for correct countdown
raise self.retry(exc=exc, countdown=2 ** self.request.retries) uses 2 ** self.request.retries, correctly doubling delay each retry.Final Answer:
raise self.retry(exc=exc, countdown=2 ** self.request.retries) -> Option AQuick Check:
Exponential backoff = 2^retry_count [OK]
Quick Trick: Use countdown=2 ** retries for exponential backoff [OK]
Common Mistakes:
MISTAKES- Not raising retry
- Using linear instead of exponential delay
- Missing power operator
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