Hello Gbenga,
Yogesh Koli
1

Its advisable to use a single instance whose sole job is to poll the RDS DB for jobs/queues. That way, you can avoid repeated execution of a particular job.

Alternatively, if you want more than one server to execute the jobs and you also do not want repeated executions, you can use AWS SQS FIFO and have your instances poll for jobs/queues and you will be certain they aren’t being executed more than once.