Hi,
Is is possible to use COORDS for all kind of geodata? Is it possible to
import data from PostGIS into COORDS or could it be possible to write a
GDAL/OGR driver for COORDS?
-Jukka Rahkonen-
Robert Buchholz wrote 2015-03-17 11:58:
(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
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