On 1 September 2016 at 09:25, Yves <[email protected]> wrote: > Along with minutely diffs, I wonder if expired tiles lists would be > something to be shared: this is something each tile server is doing by > itself by now, and seems a waste in ressources.
It's not really something that should be relied on, since there's no "one true list" of expired tiles. For example, the osm.org tileservers ignore relation expiry entirely. Other servers might expire relations only when certain tags are changed (little point in expiring all of germany when an unrendered tag on an admin boundary changes). Some tileservers use the osm2pgsql output. With large polygons, only the exterior is expired, but different operators will have different ideas as to how large a "large" polygon is, or they may want to expire the interior too. Or to put it a different way - which list would you like? The one generated by osm2pgsql, or the one generated by https://github.com/openstreetmap/chef/blob/6db231309db4c58f4264beab8a72fd46fdd0d01d/cookbooks/tile/files/default/ruby/expire.rb ? Which is "right"? Thanks, Andy _______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
