[OSM-dev] 'Up-to-Date', serving ondemand live Mapnik data

[Christopher Schmidt]

Hey,

Using the osm2pgsql diff loading code, and osmosis's --rci, I've got an
up to date copy of the Mapnik database being maintained on a server I
have access to. I put together a little bookmarklet that lets you do a
'live view' of any area by pressing a button.

  http://labs.metacarta.com/osm/up-to-date/

Since this is not tiled at all, the performance is not likely to be great,
but it does make an interesting demo. 

As usual, the data is working from osmosis minutely diffs, so it will be
delayed in the same way those are. 

For the record, loading daily diffs took about one hour apiece (after
spending the 10.5 hours to get a planet loaded). (Range was from 45m to
70m; the latter was during a vaccum run, I believe.) 

All in all, a pretty simple task; just load a planet, load diffs with -a
-- I did this manually to get caught up to the latest hour -- then turn
on --rci.  

Feedback welcome,
-- 
Christopher Schmidt
MetaCarta