one way data sync between ebs to efs

I have requirement of data sync from ebs to efs. If I change any particular file from a folder or add a file in that folder it should be automatically sync to my efs mounted folder as of now i have achieved it with msrsync util. but the limitation is i have to set a cron job for every minute. So is there any better way without cron job when ever there is a data that should be automatically sync with efs