I must admit that I didn't know that there was a working instance of TRAPI - I thought it was just a proposal. I tend to use xapi to get town or city sized chunks of OSM data, without any clever processing - would TRAPI be better for this than XAPI, or is it limited to smaller areas?
Graham. On 19 February 2011 17:00, Maarten Deen <[email protected]> wrote: > Patrick Kilian wrote: > >> Hi, >> >> For simple map calls there is TRAPI[1]. As far as I know, TRAPI performs >>> much better on map (bbox) queries than either the main-API, XAPI or ROMA >>> (on >>> equivalent hardware). Rather than using a database, I think it used a >>> pre-tiled file structure, so that it simple needs to peace together a >>> bunch >>> of tiles, rather than do a full search in a db, which massively reduced >>> the >>> disk seeks necessary. >>> >> You point out several points which are correct but not very well known. >> TRAPI exists, feeds the tiles@home clients, uses a pre-tiled structure >> directly in the file system and is rather fast. Not clue why it is >> ignored so often. >> > > Well, for one thing it does not do element predicates, and it only gives > small areas. > > Regards, > Maarten > > > _______________________________________________ > talk mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk > -- Graham Jones Hartlepool, UK.
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