I just found the package https://github.com/chfritz/meteor-serversync
This looks really good.
@chfritz can you explain a little more what it does? Does it replace the need for replica-set ?
It seems that it can sync many databases like that.
In this case is this package suited for scalability?
I can imagine many servers handling a lot of clients each, and staying tuned between each other… so they can split the load …