I am looking at documentation but I can't find how to do what I need. I need to set up Apache Cassandra (not datastax, and for now I only have one test cluster) for the following scenario:
I need 1 cluster spanning 4 datacenters (some might be physical datacenters in different geographical locations, some might be AWS).
In this cluster, I need 3 keyspace. One keyspace replicates across all datacenters, the remaining keyspace need to only replicate to 1 datacenter.
+---------------------------------------------------+
| DC 1 | DC 2 | DC 3 | DC 4 |
+---------------------------------------------------+
| Keyspace A | Keyspace A | Keyspace A | Keyspace A |
+---------------------------------------------------+
| | | Keyspace B | Keyspace B |
+---------------------------------------------------+
| Keyspace C | Keyspace C | | |
+---------------------------------------------------+
The reason is that data in KeyspaceB and KeyspaceC by legal obligation have to be kept in different regions. Can I get away with one cluster configuring replication factor 0 or something for the empty spaces in the above table or do I need 3 different clusters?
Cheer, Vince.