Thanks to all that responded. That was helpful information.
On Mon, Mar 29, 2010 at 3:45 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > On Mon, Mar 29, 2010 at 2:41 PM, Joe Stump <j...@joestump.net> wrote: > > I know at least three Diggers patrol the list and one of them is a > committer to Cassandra. Last I heard from my former coworkers at Digg was > that ZooKeeper can be more overhead than wanted when doing locks in a high > write environment. > > ZK basically does 2PC for each write, so all the ZK members need to be > in the same datacenter. Digg is operating 2 data centers now, so > that's not a good fit -- either you have bad latency every time a > client in the 2nd DC needs to access ZK or everyone has terrible write > performance. > > ZK should be fine in a single datacenter though. > > -Jonathan >
