(cross-posting to the dev and tile-serving mailing lists)
COORDS is a new vector data storage backend for OSM tile servers. It is intended to some day replace Postgres/PostGIS in the OSM render toolchain. COORDS is developed from scratch (not based on any existing DBMS), and is focused on quickly answering exactly those data queries that are typical for tile servers, while reducing memory consumption and I/O load over Postgres, especially for huge data sets (e.g. planet dumps).
The first version of COORDS has recently been released as .deb packages for Ubuntu 14.04. These can be found in the PPA https://launchpad.net/~rbuch703/+archive/ubuntu/openstreetmap . Installation and configuration instructions can be found at http://rbuch703.github.io/coords/ . Manual build instructions are available at the same page, but YMMV as the Mapnik plugin was developed only towards the Mapnik version bundled with TileMill (some 2.3.x developer release).
This version is yet incomplete (e.g. it handles only OSM ways, no relations or individual nodes), but can already be used as a replacement for Postgres in the OSM render toolchain (demo tile server: http://render.rbuch703.de ; yes, the map style sucks :-) ). Performance comparisons to Postgres are difficult as COORDS is still incomplete, but initial tests look promising: on a 2.4 GHz server with 32GB RAM and HDD-based storage, the import of a planet dump takes only about six hours (Postgres via osm2pgsql takes more than 72h on the same hardware), and rendering the level 3 metatile containing all the world's railway tracks and major roads in the demo map style takes less than a minute.
At this time, I am mostly looking for people who are willing to test this beta release of COORDS and give feedback of any kind (performance, ease-of-use, suitability for render servers, missing features, ...).
COORDS is free software, licensed under the AGPL v3 (tools) and LGPL2.1 (Mapnik plugin), respectively. Source code is available from github at https://github.com/rbuch703/coords and https://github.com/rbuch703/coords-mapnik-plugin .
Best Regards, Robert Buchholz _______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
