On Thu, Aug 5, 2010 at 12:59 PM, Zhong Li <z...@voxeo.com> wrote: > > The big thing bother me is initial ring token. We have some Column Families. > It is very hard to choose one token suitable for all CFs. Also some Column > Families need higher Consistent Level and some don't. If we set
Consistency Level is set by clients, per request. If you require different _Replication Factors_ for different CFs, then just put them in different keyspaces. Additional keyspaces have very little overhead (unlike CFs). > ReplicationFactor too high, it is too costy for crossing datacenter, > especially in otherside the world. > > I know we can setup multiple rings, but it costs more hardware. > > if Cassandra can implement Ring,Token and RF on the CF level, or even > SuperColumn level, it will make design much easier and more efficiency. > > Is it possible? > The approach I described above is what you can do. The rest of what you asked is not happening. b
