Excellent to know! (and yes, I figure I'll expand someday, so I'm glad I found this out before digging a hole).
The other issue I've been pondering is a normal column family of encoded objects (in my case JSON) vs. a super column. Based on my use case, things I've read, etc... right now I'm coming down on normal + encoded. will On Tue, Apr 12, 2011 at 2:57 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > NTS is overkill in the sense that it doesn't really benefit you in a > single DC, but if you think you may expand to another DC in the future > it's much simpler if you were already using NTS, than first migrating > to NTS (changing strategy is painful). > > I can't think of any downsides to using NTS in a single-DC > environment, so that's the "safe" option. > > On Tue, Apr 12, 2011 at 1:15 PM, William Oberman > <ober...@civicscience.com> wrote: > > Hi, > > > > I'm getting closer to commiting to cassandra, and now I'm in system/IT > > issues and questions. I'm in the amazon EC2 cloud. I previously used > this > > forum to discover the best practice for disk layouts (large instance + > the > > two ephemeral disks in RAID0 for data + root volume for everything else). > > Now I'm hoping to confirm bits and pieces of things I've read about for > > snitch/replication strategies. I was thinking of using > > endpoint_snitch: org.apache.cassandra.locator.Ec2Snitch > > placement_strategy='org.apache.cassandra.locator.NetworkTopologyStrategy' > > (for people hitting this from the mailing list or google, I feel > obligated > > to note that the former setting is in cassandra.yaml, and the latter is > an > > option on a keyspace). > > > > But, I'm only in one region. Is using the amazon snitch/networktopology > > overkill given everything I have is in one DC (I believe region==DC and > > availability_zone==rack). I'm using multiple availability zones for some > > level of redundancy, I'm just not yet to the point I'm using multiple > > regions. If someday I move to using multiple regions, would that change > the > > answer? > > > > Thanks! > > > > -- > > Will Oberman > > Civic Science, Inc. > > 3030 Penn Avenue., First Floor > > Pittsburgh, PA 15201 > > (M) 412-480-7835 > > (E) ober...@civicscience.com > > > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com > -- Will Oberman Civic Science, Inc. 3030 Penn Avenue., First Floor Pittsburgh, PA 15201 (M) 412-480-7835 (E) ober...@civicscience.com
