[Solved] What happens if a Cloud Function triggered by Pub/Sub throws an error during execution? — Ans: The message is retried until the function succeeds or the message expires. | GCP

GCP - Cloud Pub/Sub

What happens if a Cloud Function triggered by Pub/Sub throws an error during execution?

AThe message is sent to a dead-letter queue automatically.

BThe message is discarded immediately without retry.

CThe message is retried until the function succeeds or the message expires.

DThe function stops and no retry occurs.

Step-by-Step Solution

Solution:

Step 1: Understand Pub/Sub retry behavior
If a Cloud Function fails, Pub/Sub retries delivering the message until success or expiration.
Step 2: Clarify dead-letter queue behavior
Dead-letter queues require explicit configuration; they are not automatic.
Final Answer:
Messages are retried until success or expiration. -> Option C
Quick Check:
Failed function = message retry [OK]

Quick Trick: Errors cause Pub/Sub to retry message delivery [OK]

Common Mistakes:

Master "Cloud Pub/Sub" in GCP

9 interactive learning modes - each teaches the same concept differently

More GCP Quizzes

What happens if a Cloud Function triggered by Pub/Sub throws an error during execution?