This has come up before at http://markmail.org/thread/w3mrh4h64xpf3vuj and http://markmail.org/message/vnmsuddlrhaziq7g I am in favor of adding eventually-consistent atomic operations such as this, but I'm not sure how one would implement it. Some sort of UUID + bloomfilter for the individual atomic operations? I tend to think "retrieve and increment" as requested by Jon is at odds with eventual consistency, but maybe I'm wrong.
Michael On Wed, Nov 4, 2009 at 3:51 PM, Bill de hOra <b...@dehora.net> wrote: > > > Chris Goffinet wrote: >> >> Hey, >> >> At Digg we've been thinking about counters in Cassandra. In a lot of our >> use cases we need this type of support from a distributed storage system. >> Anyone else out there who has such needs as well? Zookeeper actually has >> such support and we might use that if we can't get the support in Cassandra. > > I tend to need a generalization on incr/decr which is plus/minus (eg for > quota management). Having these in Cassandra would be great. > > Bill >
