[OSM-dev] OSM and CouchDB/GeoCouch

[Andreas Kalsch]

The web frontend is mainly for searching - it needs fast reads, 
horizontal scaling across several servers.
In the backend it needs functions that check for geometric relations or 
that compute new geometries. It must be able to handle huge, complex 
geometries.
Fast geo indexes for both frontend and backend.
I can drop the C in CAP.
I don't want to use both PostGIS and Couch for the search frontend, so I 
want to decide by some clear metrics what to use.
My plan is to use Couch as soon as I need to scale the frontend, and 
PostGIS will still be used for complex computations in the backend.

However, it would be great, if the community can experiment with your 
code and proove how well a NoSQL solution will perform compared to a 
RDBMS for the OpenStreetMap tool layers.

Andi

Am 02.07.10 00:58, schrieb Lars Francke:
>> were there any successful attempts to read OSM data into CouchDB and
>> Geocouch? Does somebody know of a backend?
>>      
> I have done something like that and can provide some code at the end
> of July (I won't be back home before then). It really is just a
> different kind of schema. But the exact schema depends on what you
> want to use it for. Do you want to use it as an alternative to the
> API/PostgreSQL or a convenient storage on mobile devices, routing
> data, mapnik backend etc.
>
> CouchDB is kinda great (even though the documentation sucks) but it's
> just one out of many tools and may or may not be a good fit.
>
> Cheers,
> Lars
>