What's wrong with the /status URL on tiles? It works for osm.org and Mapquest Open. Doesn't seem to work for cloudmade but then I don't think your plan would work any better. From what I've seen, cloudmade does generally update their data relatively quickly but their tile server is either overloaded or configured in such a way that it is a pain to actually ensure that a given tile is freshly rendered. Sometimes I have seen fresh tiles right next to stale ones. So you changing data somewhere in the middle of the ocean will have no bearing on the freshness of a tile served up 5,000 miles away.
Toby On Fri, Oct 4, 2013 at 9:21 AM, Jaak Laineste <[email protected]>wrote: > Hello, > > I have from time-to-time problem that I don't know how old is a particular > tile service, even for my own ones I'm not sure if update is working > properly or not. For example, are Cloudmade and MapQuest tiles updated? > Idea: add visible timestamp ("watermark", "microprint") using fake ways to > the global map, so it would be rendered with more or less any possible > layout, but only if you know from where to look for it. Maybe near null > island. Or my home. > > Technically, I'd have a robot which updates timestamp in OSM API every > hour, and draws GMT date and time using usual ways with highway=residential > tag, so to see it you just zoom in to specific place. > > Questions: has anyone done this, or something even better? Any objections ? > > -- > Jaak > > > _______________________________________________ > dev mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/dev > >
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