GCP - Cloud Pub/Sub
You want to build a system that processes user requests with retries and exponential backoff, but also broadcasts some notifications to multiple services. Which combination of services is best?
You want to build a system that processes user requests with retries and exponential backoff, but also broadcasts some notifications to multiple services. Which combination of services is best?
hard📝 Architecture Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Match service to use case
Cloud Tasks handles retries with backoff well for user requests; Pub/Sub broadcasts messages to multiple subscribers.Step 2: Evaluate other options
Pub/Sub alone lacks fine-grained retry control; Cloud Tasks is not for broadcasting; Cloud Functions alone is not a messaging service.Final Answer:
Use Cloud Tasks for user requests and Pub/Sub for notifications -> Option BQuick Check:
Retries + backoff = Cloud Tasks; broadcast = Pub/Sub [OK]
Quick Trick: Cloud Tasks for retries; Pub/Sub for broadcasts [OK]
Common Mistakes:
- Using Pub/Sub for retries only
- Using Cloud Tasks for broadcasts
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