[MapProxy] SQLite cache types vs MBTiles

G. Allegri giohappy at gmail.com
Tue Nov 26 01:01:49 PST 2013


> Hi,
>
> Can it be called as MBTiles if the grid is anything else than
> global-mercator?  See
> https://github.com/mapbox/mbtiles-spec/blob/master/1.1/spec.md



I think it's up to you to keep the cache and the grid smentically coherent.
Am I wrong?

giovanni


>
>
> -Jukka Rahkonen-
>
> Oliver Tonnhofer wrote:
>
> >
> > Hi,
> >
> > On 25.11.2013, at 22:46, Travis Kirstine wrote:
> > > Are there any other differences between sqlite caches and mbtiles
> beyond the
> > ability to store time stamps and store each level in seperate db.
> >
> > No.
> >
> > >  Specifically can you:
> > > - Run multi-threaded seeding
> > > - Store mixed format images
> > > - Use grids in other projections - GLOBAL_GEODETIC
> >
> > Yes[0], yes, yes.
> >
> >
> > [0] someone reported SQLite connection timeouts during seeding with high
> > concurrency, but he didn't report any further numbers. I do think this
> might
> > happen when IO load is very high, but in this case you should reduce
> concurrency
> > to a more moderate value. More feedback is welcome.
> >
> >
> > Regards,
> > Oliver
> >
> > --
> > Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.com
> > http://mapproxy.org | https://github.com/olt    | @oltonn
> >
> >
> >
> >
> >
> >
> >
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-- 
Giovanni Allegri
http://about.me/giovanniallegri
blog: http://blog.spaziogis.it
GEO+ geomatica in Italia http://bit.ly/GEOplus
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