[OSM-dev] Paging the tile server admins

Ramas ieskok at ramuno.lt
Wed Apr 27 12:23:55 BST 2011


On 27 April 2011 12:25, Grant Slater <openstreetmap at firefishy.com> wrote:

> Hi NopMap
>
> On 27 April 2011 09:29, NopMap <ekkehart at gmx.de> wrote:
> >
> > Hi!
> >
> > Paging the admins of the OSM tile servers. I'd like to get in touch about
> > the topic of mass downloaders. It appears that some problems first become
> > visible on small tile servers like my own, but hit the main tile servers
> a
> > while later, so it might be a good thing to share experiences. E.g. MOABC
> > was an issue for my server in december and had to be blocked on the main
> > servers about three months later.
> >
>
> Yes, the MOBAC app is becoming a serious problem for the tile.osm.org
> server. Earlier versions fake a Firefox user-agent. I have had to
> reduce max tile QOS limit downward in an attempt to control the
> situation. Allowing mass tile scraping is not sustainable.
> A lively thread when I restricted the Faked user-agent:
> http://sourceforge.net/projects/mobac/forums/forum/861096/topic/4423122
>

This QOS limit is real problem for applications which doesn't works like
bulk downloaders but does many requests to tile server.
Maybe we could do some excludes for "good" applications (like proxy caches)
and rought limits for "bad" applications?
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