[OSM-dev] how many api calls/time for an app allowed?
Gary68
gary at gary68.de
Fri Jul 3 14:45:48 BST 2009
ok,
then maybe we have to try :-) but of course i could implement some speed
bumps and maybe it would even be enough to do the checks once a day. and
maybe then we can find a time slot. let's see.
the checks i would run would include
- touch checks (nearly touching nodes/ways, improperly not connected)
- cross checks (crossings of highways on same layer, without bridge,
tunnel etc.)
- roundabout check, direction
- maybe more...
the idea is to provide good data, not outdated. currently i run those
and other checks on planet excerpts once a week. but of course in doing
so i calculate large untouched areas and data might be old (in someones'
opinion) ...
when there will be a bug clearinghouse i will provide the data there.
for germany that is. i don't have a supercomputer and that's where the
number of ~500 is estimated for.
cheers
gerhard
Am Freitag, den 03.07.2009, 14:27 +0100 schrieb Tom Hughes:
> On 03/07/09 14:01, Gary68 wrote:
>
> > i am playing with the idea of providing "real time" error checking on
> > osm data. usually one would use the XAPI. but since it is unreliable and
> > obviously misses data and it seems no one really cares (no ansers to
> > questions about that matters on the mailing list - at least not
> > satisfying ones) one would use the API instead.
> >
> > so let's say i would need ~500 calls a day for an application, each
> > requesting a "tile" of 0.01 by 0.01 deg. would i or my application be
> > stopped doing so? it is only read access!
>
> There is no hard and fast limit - the limit is the point at which your
> activities cause me to have to start looking at the server to try and
> work out why performance has been impacted. If at that point you appear
> to be the cause of the performance impact then you get yourself banned.
>
> I'm not quite sure what sort of error checking you can provide with such
> a small number of calls for such a small area though... Presumably
> whatever the checking is only being done for a small part of the planet?
>
> BTW saying "only read access" doesn't help - read access is typically
> more expensive that write access for us.
>
> Tom
>
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