Google Cloud Professional Cloud Developer — Question 105

You recently developed a new service on Cloud Run. The new service authenticates using a custom service and then writes transactional information to a Cloud
Spanner database. You need to verify that your application can support up to 5,000 read and 1,000 write transactions per second while identifying any bottlenecks that occur. Your test infrastructure must be able to autoscale. What should you do?

Answer options

• A. Build a test harness to generate requests and deploy it to Cloud Run. Analyze the VPC Flow Logs using Cloud Logging.
• B. Create a Google Kubernetes Engine cluster running the Locust or JMeter images to dynamically generate load tests. Analyze the results using Cloud Trace.
• C. Create a Cloud Task to generate a test load. Use Cloud Scheduler to run 60,000 Cloud Task transactions per minute for 10 minutes. Analyze the results using Cloud Monitoring.
• D. Create a Compute Engine instance that uses a LAMP stack image from the Marketplace, and use Apache Bench to generate load tests against the service. Analyze the results using Cloud Trace.

Correct answer: B

Explanation

Option B is correct because using a Google Kubernetes Engine cluster with Locust or JMeter allows for dynamic load generation, which is essential for testing scalability effectively. The other options either do not provide the same level of dynamic load generation (A and D) or lack the necessary ability to scale and analyze results effectively within the desired framework (C).