riot-redis live-only replication

[ljmendoza01]

Hi. Just a question, does liveonly replication replicates ongoing(live) data changes only? or does it run a compare of source and target then replicates all data discrepancy regardless whether the key was change offline/when the replication job is not running?
I'm wondering how i can replicate data changes during offline hrs(when i'm not running the replication job)