couchdb-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mark Hahn <m...@reevuit.com>
Subject Re: Considering CouchDB
Date Wed, 20 Nov 2013 22:43:04 GMT
I thought that every write triggered a view rebuild and that the stale
option only meant a read didn't have to wait for a current rebuild to
finish.  That would means the views are pretty much up-to-date.


On Wed, Nov 20, 2013 at 2:36 PM, Robert Newson <rnewson@apache.org> wrote:

> True, but remember couchdb doesn't automatically keep indexes fresh in
> the background, so "stale" can be "really really stale". ;)
>
> B.
>
>
> On 20 November 2013 22:34, Simon Metson <simon@cloudant.com> wrote:
> > Unless your app can deal with querying the view stale.
> >
> >
> > On Wednesday, 20 November 2013 at 21:56, Mark Hahn wrote:
> >
> >> I meant http view requests were blocked. It is waiting for the view
> >> rebuild.
> >>
> >> I'm can't type what I'm thinking today.
> >>
> >>
> >> On Wed, Nov 20, 2013 at 1:54 PM, Mark Hahn <mark@reevuit.com> wrote:
> >>
> >> > never mind. I wasn't talking about the file level at all. I meant that
> >> > http read requests are blocked after http update requests.
> >> >
> >> >
> >> > On Wed, Nov 20, 2013 at 1:52 PM, Robert Newson <rnewson@apache.org>
> wrote:
> >> >
> >> > > "DB reads are blocked by DB updates at the http level."
> >> > >
> >> > > Nope, there's a process that can read the database and a separate
> one
> >> > > for writing to it. Writing to an append only file is obviously
> >> > > serialized but there's no need to block reads.
> >> > >
> >> > > B.
> >> > >
> >> > >
> >> > > On 20 November 2013 21:35, Mark Hahn <mark@reevuit.com> wrote:
> >> > > > > Database writes are not coupled to view updates.
> >> > > >
> >> > > >
> >> > > > I understand now, you are talking about file read/write level.
DB
> reads
> >> > > > are blocked by DB updates at the http level.
> >> > > >
> >> > > >
> >> > > > On Wed, Nov 20, 2013 at 1:05 PM, Robert Newson <
> robert.newson@gmail.com
> >> > > > wrote:
> >> > > >
> >> > > > > "A write requires updating views and reads have to wait
for the
> update"
> >> > > > >
> >> > > > > Is not true. Database writes are not coupled to view updates.
> >> > > > >
> >> > > > > Sent from my iPad
> >> > > > >
> >> > > > > > On 20 Nov 2013, at 20:59, Mark Hahn <mark@reevuit.com>
wrote:
> >> > > > > >
> >> > > > > > A write requires updating views and reads have
> >> > > > > > to wait for the update
> >> > > > > >
> >> > > > >
> >> > > > >
> >> > > >
> >> > > >
> >> > >
> >> > >
> >> >
> >> >
> >>
> >>
> >>
> >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message