Data Synchronization using Couchbase

Hi,
i want to synchronize two database on different nodes on chouchbase
How can i accomplish that?

you can try XDCR
FYI
https://developer.couchbase.com/documentation/server/4.6/xdcr/xdcr-intro.html

But it will just replicate data into another cluster.
I want to synchronize, not replicate.

In couchbase, we use the term replication to refer to data synchronization. So we can point you in the right direction, can you explain your use of term synchronization and /or use case.