Efficient way to check whether SQS queue is empty

Question

I have a SQS Queue from which messages are read by multiple hosts. I want to run some job (business logic) after all the messages in the queue have been processed.

Answer 1

You could trigger your post business logic on the cloud watch metric related to queue depth. When the depth is 0 then you can send a SNS notification or start a lambda function.

Also this cloud watch metric is better then others since this is actual message count reported by sqs service.