AWS Certified Developer Associate DVA-C02 Practice Question
A developer observes that users are experiencing sporadic outages when attempting to load a web application service, receiving an unexpected 'Service Unavailable' message. This coincides with the recent rollout of new features. What initial action should the developer take to start diagnosing the root cause of the service disruptions?
Immediately initiate horizontal scaling action to increase the compute capacity available for the service.
Examine the service's operational dashboard for system health and recent events that could indicate deployment-related issues.
Conduct a line-by-line review of the new features' codebase for potential syntactic or logical errors.
Revert the web application service to a previous stable version that existed before the new feature rollout.
When facing such intermittent outages, particularly after a new rollout, inspecting the service's operational dashboard available through the cloud provider's management console should be the first step. This provides a high-level overview of the system's health and may highlight specific issues such as insufficient resources, configuration errors, or throttled processes that occurred post-deployment. This action precedes reviewing code changes or altering the service's scaling parameters, as it may quickly pinpoint operational anomalies introduced by the deployment. Directly scaling or rolling back without initial analysis could obfuscate the underlying issue or cause further disruption.
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AWS Certified Developer Associate DVA-C02
Troubleshooting and Optimization
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