bbox queries using the built in spatial indexing presumably? OSM has
it's own magical bitmask for that, that may also be as fast in mongo,
who knows.
On 4/11/2011 5:58 PM, Ian Dees wrote:
On Mon, Apr 11, 2011 at 6:36 PM, Sergey Galuzo <[email protected]
<mailto:[email protected]>> wrote:
Hi,
I am working on evaluation of MongoDB for several storage
solutions at hand. Some of them resemble current OSM editing
database. I have heard that OSM dev is/was evaluating MongoDB
also. I was wondering whether it possible to share the findings?
In my experimentation with MongoDB (seen here:
https://github.com/iandees/mongosm/) I found it to be very slow.
Inserts were speedy, but bounding-box queries took a long time.
The most recent dev version of MongoDB includes "multi-location
documents" support:
http://www.mongodb.org/display/DOCS/Geospatial+Indexing#GeospatialIndexing-MultilocationDocuments
This would allow a single way document to be indexed at multiple
locations and vastly speed up the map query.
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