[OSM-dev] how many api calls/time for an app allowed?

[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

-- 
Tom Hughes (tom at compton.nu)
http://www.compton.nu/