On Thursday, March 27, 2014, Stanley Iriele <[email protected]> wrote:
> Also... Jens... You said couchbase doesn't have MVCC ? All docs say That it > uses couchDB MVCC append only under the good on a single node... Could you > elaborate a tad on what you mean by doesn't have MVCC?... Also for the > couchDB advocates...I think discussions about this are incredibly helpful > for all parties involved.. couchabase has no revision tree / docs. the mvcc has been removed to not impact the performances. - benoit > On Mar 26, 2014 2:58 PM, "Stanley Iriele" <[email protected]<javascript:;>> > wrote: > > > Thanks again Jens for the reply... Couchbase has documentation on > > this...and gobs of marketing... But bigcouch does not... > > > > In bigcouch...all nodes can handle every request... But let's say a node > > cannot reach the nodes that have a key..like node A knows it needs to > read > > from nodes B and C but cannot reach them.... But has a copy of the data > > locally but was given r=2 for consent read... What does bigcouch do? > > > > Potentially return stale data?.. Throw an error?.... > > > > I know that bigcouch is based on the dynamo white paper... But so is > > Cassandra...and riak and you cab at least find out the answers to these > > questions with a little googling. Again I'm eternally grateful for the > > responses I'm getting I just wish there more docs....like the couchDB > docs > > page that even has a CAP theorem chart..(which is freaking awesome).. > > On Mar 26, 2014 12:24 PM, "Jens Alfke" <[email protected]<javascript:;>> > wrote: > > > >> > >> On Mar 26, 2014, at 9:31 AM, Stanley Iriele > >> <[email protected]<javascript:;>> > wrote: > >> > >> > Why would you say that couchbase scales better?... > >> > >> That's getting way off-topic for this list, but http://couchbase.comhas > >> a bunch of marketing materials and white papers and such, and we have > sales > >> engineers you can talk to if you really want to dive into it. But as I > >> said, Couchbase Server and BigCouch are very different. > >> > >> > And does bigcouch ever return conflicts to the user? How is the "which > >> write won" problem solved? > >> > >> AFAIK BigCouch's document/revision/conflict model is identical to > >> CouchDBs. MVCC, revision IDs, revision trees, conflicts represented as > >> branched trees, conflict resolution by deleting unwanted branches, etc. > >> > >> --Jens > > > > >
