On Sun, 2009-12-13 at 22:14 +1000, John Smith wrote:
> 2009/12/13 Jon Burgess <jburgess...@googlemail.com>:
> > On Fri, 2009-12-11 at 09:10 +1000, John Smith wrote:
> >> It's slightly annoying now that things render so quickly that the
> >> coastlines don't.
> >
> > I ran the coastcheck utility last night to update the coastline
> > shapefiles on the main Mapnik layer.
> >
> > The updates will not automatically appear on the map unless the tiles is
> > re-rendered due to updates of other data. We have no mechanism to
> > recognise which tiles need to be rendered when the coastline is updated.
> > This is part of the reason why the updates are normally coincident with
> > the bulk reload where we mark all the old tiles as invalid.
>
> Are the tiles still automatically refreshed on the first request after
> 7 days? If so updating at least weekly would still be useful.
I think the 7 day figure was only used to set the http expiry headers on
the returned tiles. It did not actually force anything to re-render. It
was based on the assumption there would be a fresh full import every 7
days which no longer happens now we have the minutely updates.
Jon
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