DVA-C02 · Question #615
A company uses more than 100 AWS Lambda functions to handle application services. One Lambda function is critical and must always run successfully. The company notices that occasionally, the critical
The correct answer is A. Configure reserved concurrency for the critical Lambda function. Set reserved concurrent. Reserved concurrency guarantees a specific number of concurrent executions for a critical Lambda function. This ensures that the critical function always has sufficient resources to execute, even if other functions are consuming concurrency. Ensures Function Availability: Reserve
Question
A company uses more than 100 AWS Lambda functions to handle application services. One Lambda function is critical and must always run successfully. The company notices that occasionally, the critical Lambda function does not initiate. The company investigates the issue and discovers instances of the Lambda TooManyRequestsException: Rate Exceeded error in Amazon CloudWatch logs. Upon further review of the logs, the company notices that some of the non-critical functions run properly while the critical function fails. A developer must resolve the errors and ensure that the critical Lambda function runs successfully. Which solution will meet these requirements with the LEAST operational overhead?
Options
- AConfigure reserved concurrency for the critical Lambda function. Set reserved concurrent
- BConfigure provisioned concurrency for the critical Lambda function. Set provisioned concurrent
- CConfigure CloudWatch alarms for TooManyRequestsException errors. Add the critical Lambda
- DConfigure CloudWatch alarms for TooManyRequestsException errors. Add Amazon EventBridge
How the community answered
(51 responses)- A69% (35)
- B6% (3)
- C8% (4)
- D18% (9)
Explanation
Reserved concurrency guarantees a specific number of concurrent executions for a critical Lambda function. This ensures that the critical function always has sufficient resources to execute, even if other functions are consuming concurrency. Ensures Function Availability: Reserved concurrency isolates the critical Lambda function from other functions. Low Overhead: Configuring reserved concurrency is straightforward and requires minimal setup.
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