You are getting a lot of empty receive requests when using Amazon SQS. This is making a lot of unnecessary network
load on your instances. What can you do to reduce this load?
Subscribe your queue to an SNS topic instead.
Use as long of a poll as possible, instead of short polls.
Alter your visibility timeout to be shorter.
sqsd on your EC2 instances.
One benefit of long polling with Amazon SQS is the reduction of the number of empty responses, when there are no
messages available to return, in reply to a ReceiveMessage request sent to an Amazon SQS queue. Long polling allows
the Amazon SQS service to wait until a message is available in the queue before sending a response.