Google Cloud Professional Cloud Developer PCD — Topic 1 Question 135

Question

You manage an ecommerce application that processes purchases from customers who can subsequently cancel or change those purchases. You discover that order volumes are highly variable and the backend order-processing system can only process one request at a time. You want to ensure seamless performance for customers regardless of usage volume. It is crucial that customers' order update requests are performed in the sequence in which they were generated. What should you do?

Accepted Answer

Correct answer: C. The correct answer is C. Option C: Use a Pub/Sub subscriber in pull mode and use a data store to manage ordering. Pub/Sub is a serverless, global messaging service that decouples services and ingests high-volume event streams.

Google Cloud Professional Cloud Developer PCD — Question 135