Exam Professional Cloud DevOps Engineer topic 1 question 94 discussion

Agree with C as answer.

Given the scenario where a sales event has caused an increase in orders and the stock information is not being updated quickly enough, leading to a large number of orders being accepted for out-of-stock products, the most appropriate action to ensure that the warehouse system accurately reflects product inventory at the time of order placement and minimize the impact on customers would be: C. Increase the number of Pod replicas. Increasing the number of Pod replicas can help scale out the microservice to handle the increased load efficiently. This will allow the microservice to process the order messages and update the stock information in the warehousing system more quickly, reducing the likelihood of accepting orders for out-of-stock products. This approach addresses the issue at its root by ensuring that there are enough resources available to handle the increased workload effectively.

Increasing the number of Pod replicas (Option C) is a suitable solution as it allows the microservice deployed in the Google Kubernetes Engine (GKE) Autopilot cluster to efficiently handle a surge in orders during a sales event. By scaling horizontally, additional instances of the microservice are created, enabling parallel processing of order messages and reducing the backlog. This approach leverages the flexibility and automation of GKE Autopilot, ensuring that the infrastructure dynamically adapts to the increased load, providing a more responsive and scalable solution to minimize the impact on customers and maintain accurate stock information in the warehousing system.

Answer C. This action would help accommodate the increased load by parallelizing the work and should be implemented first to mitigate the issue. If after scaling the number of replicas the CPU or memory usage approaches the limits, then considering scaling up the resources (CPU and memory limits) for each Pod might be the next step.

The average acknowledgement latency from Pub/Sub has not significantly increased, which suggests that Pub/Sub is still able to handle the message load effectively. However, the significant increase in the oldest unacknowledged message age and the number of undelivered messages indicates that the pods are not processing the messages quickly enough. Increasing the number of Pod replicas would allow your microservice to process more messages concurrently, reducing the backlog and ensuring that stock information is updated more quickly.

B for sure.