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From Mark Hahn <m...@reevuit.com>
Subject Re: Considering CouchDB
Date Wed, 20 Nov 2013 21:54:47 GMT
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
> >>
>

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