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From Benoit Chesneau <bchesn...@gmail.com>
Subject Re: Bigcouch vs couchbase
Date Thu, 27 Mar 2014 05:45:22 GMT
On Thursday, March 27, 2014, Stanley Iriele <siriele2x3@gmail.com> 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" <siriele2x3@gmail.com<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" <jens@couchbase.com<javascript:;>>
> wrote:
> >
> >>
> >> On Mar 26, 2014, at 9:31 AM, Stanley Iriele <siriele2x3@gmail.com<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
> >
> >
>

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