AWS Certified Developer Associate DVA-C02 Practice Question
A mobile application suddenly starts encountering an elevated rate of errors when performing operations that rely on a backend service deployed as a serverless function coupled with an integration point for request handling. Upon inspecting the logs, you observe a pattern of 5XX status codes. Considering that invoking the serverless function through the AWS management console yields successful responses, what is the most probable cause for the errors encountered by the application?
Path or resource mapping on the integration point is misconfigured, leading to a resource not found situation.
The mobile application is sending incorrectly structured requests causing the service to reject them.
Exhaustion of the integration point's request handling capacity due to service limits being exceeded.
The serverless function is missing execution role permissions required to handle requests.
A 503 Service Unavailable status indicates that the server or service that the integration point directs to is currently incapable of handling the request. This can be due to service limits being reached or temporary unavailability, potentially caused by throttling policies in place. Since direct invocations of the function are successful, it points to an issue with the way requests are being managed and not an issue with the serverless function's permissions, incorrect URLs, or malformed requests from the client side.
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AWS Certified Developer Associate DVA-C02
Troubleshooting and Optimization
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