Crucial Exams

AWS Certified Developer Associate DVA-C02 Practice Question

Your company runs an online retail application built from multiple microservices. Customers now report check-out failures. You enable AWS X-Ray and inspect the service map, which shows a spike in faults on the edge between the payment-processing service and the inventory service. What does this spike most likely indicate, and what should be your first troubleshooting action?

  • Tracing overhead is slowing requests, so disabling X-Ray should help restore normal checkout performance.

  • It probably reflects a transient network glitch after deployment; monitor the system for a day or two before taking action.

  • The spike shows repeated errors during interactions between the two services; examine their traces and CloudWatch logs to find the root cause.

  • It means the inventory service is under-provisioned; immediately add more compute and memory to that service.

AWS Certified Developer Associate DVA-C02
Troubleshooting and Optimization
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