On Fri, Sep 18, 2009 at 9:09 PM, Jonathan Mischo <jmis...@quagility.com> wrote: >>> • Multiple data center replication in the background. maybe a >>> multi master type thing >> >> It already has this. It was built from the ground up for this. It's highly >> tolerant to partitioning and has always available writes. All replication is >> done in the background (unless you specifically set a write to a high >> consistency level). > > You know, it does and it doesn't. RackAwareStrategy isn't a true N+1 > scaling solution. Currently, RackAwareStrategy only guarantees that it will > try to replicate data to one other data center and/or one other rack, > depending on the number of replicas specified.
Yes; that's what it's supposed to do, and it's satisfying a very real use case: "I want my data's primary data center to be DC A, but I want one replica in DC B in case A is completely unavailable." Other use cases can use different Strategies. That's why they're pluggable. It's not one-size-fits-all and it's not supposed to be. -Jonathan
