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From Dale Harvey <>
Subject Re: Is the revision field deterministic?
Date Tue, 08 Apr 2014 23:56:08 GMT
Yup I almost mentioned PouchDB when I seen this thread come up, from an
external implementors perspective it isnt great that CouchDB uses the
internal erlang binary term format to create revisions, its possible to
implement it compatibly but decided against it due to extra deps +

>From an API perspective I believe its a leaky abstraction, I havent tested
this but it seems like if the binary term format changes between erlang
versions then the same code can have different behaviour, similiarly
possible between couch versions.

Also I just dont think its a great idea, by not conflicting the users loses
information, its easy for audit software to force conflicts by adding the
target id to the documents, but yeh it still makes me feel weird.

And yup while unfortunately named, Couchbase Lite is very much along the
same lines as PouchDB, with a different target platform. (we even stole the
same replication optimisations :))


On 9 April 2014 00:36, Jens Alfke <> wrote:

> On Apr 8, 2014, at 8:34 AM, Alexander Shorin <> wrote:
> > Jens, is that was another uncanny attempt to adv. unrelated product
> > without providing relevant information? These actions only confuses
> > people forcing them thinking that Couchbase and CouchDB are the
> > similar products while they don't.
> Nope. Couchbase *Lite* and CouchDB _are_ very similar. They have the exact
> same data model, a 95% similar REST API*, and can replicate with each
> other. (The implementations are entirely different, though, because
> Couchbase Lite is meant to be embedded in mobile apps.)
> Couchbase Lite is at least as similar to CouchDB as PouchDB is, and no one
> complains about PouchDB being mentioned here.
> Couchbase *Server* is a different beast entirely. It was wrong of me to
> discuss it here last week; apologies again.
> I know the names are confusing. Couchbase-the-company was named back when
> it was very much about CouchDB, which then changed for complicated
> technical reasons. Couchbase Lite was originally called TouchDB, but was
> renamed for branding/marketing reasons outside my control.
> --Jens
> * CBL is missing some of the admin features, like user accounts and
> _restart, that don't make sense for an embedded database; and it adds a
> couple of replication optimizations that I've been discussing on the
> 'replication' list here.

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