[Tile-serving] [osm2pgsql] Invalidation for large relations (#38)

[Frederik Ramm]

Hi,

On 06/11/2013 07:12 PM, pnorman wrote:
> Invalidation of tiles for large relations could lead to all the tiles in
> the US being invalidated by a tag change on a US border relation.

Normally, expire_tiles_from_poly will expire tiles for the whole 
bounding box of the polygon unless the bbox has a width or height higher 
than EXPIRE_TILES_MAX_BBOX, in which case only those tiles actually 
touched by the outline of the polygon will be expired.

This should make sure that the whole of the US is never invalidated.

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"