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From Simon Metson <si...@cloudant.com>
Subject Re: Considering CouchDB
Date Wed, 20 Nov 2013 22:34:14 GMT
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
> > > > > > 
> > > > > 
> > > > > 
> > > > 
> > > > 
> > > 
> > > 
> > 
> > 
> 
> 
> 



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