[OSM-dev] Two technology related questions

[Jocelyn Jaubert]

Hi,

Le 30/01/2014 12:09, Tom Hughes a écrit :
> Actually we use a quick-and-dirty method of identifying which tiles have
> changed so I believe that relation changes may not necessarily mark all
> effected tiles as dirty.
> 
> There is a system where osm2pgsql identifies the changes as it loads the
> update which is more accurate but we don't use it, I think because it tends
> to mark so many tiles as dirty which are only marginally affected.

I'm very interested with this quick-and-dirty method to expire tiles.

Can you explain how this method works, or provide the script used by osm.org
tiles ?


Thanks,
Jocelyn