Thanks Eben
On Wed, May 12, 2010 at 7:33 PM, Eben Hewitt <eben.hew...@gmail.com> wrote: > QUORUM is a high consistency level. It refers to the number of nodes that > have to acknowledge read or write operations in order to be assured that > Cassandra is in a consistent state. It uses <ReplicationFactor> / 2 + 1. > > DCQUORUM means "Data Center Quorum", and balances consistency with > performance. It puts multiple replicas in each Data Center so operations can > prefer replicas in the same DC for lower latency. > > See https://issues.apache.org/jira/browse/CASSANDRA-492 for a little > discussion. > > Also see > http://svn.apache.org/repos/asf/cassandra/trunk/src/java/org/apache/cassandra/locator/DatacenterShardStrategy.java > and > > http://svn.apache.org/repos/asf/cassandra/trunk/src/java/org/apache/cassandra/service/DatacenterWriteResponseHandler.java > > Eben > > > > On Wed, May 12, 2010 at 6:15 AM, vd <vineetdan...@gmail.com> wrote: > >> Hi >> >> I have read about QUORUM but lately came across DCQUORUM. What is it and >> whats the difference between the two ? >> >> > > > -- > "In science there are no 'depths'; there is surface everywhere." > --Rudolph Carnap >
