A developer needs to ensure that immediate alerts are sent out when a serverless function's usage nears the upper bounds of its allowed parallel executions, potentially impacting the application's availability. Which approach should the developer employ for real-time notification?
Set up a configuration recorder to monitor changes to the function's configuration and alert on significant modifications.
Incorporate error handling in the relevant code to catch execution limit errors and send emails via a mail delivery service.
Create an alarm based on the 'ConcurrentExecutions' metric that triggers an alert to a messaging topic when nearing the execution limit.
Schedule regular audits of usage patterns through log analysis and manually trigger notifications when limits are approached.