To clarify the question
We know about Coherence “Push Replication Pattern”, which can be used to replicate data between Grids over WAN, and which was introduced about 4 years ago.
Since that time,
1) if there are other mechanisms were introduced by Oracle/Coherence which can be used to replicate data across WAN?
2) and, in particular, if Coherence has its own kind of “PULL replication