[OSM-dev] Tile usage without proper identification

Andy Allan gravitystorm at gmail.com
Fri Aug 12 13:57:17 UTC 2016

On 12 August 2016 at 12:34, Maarten Deen <mdeen at xs4all.nl> wrote:
> On 2016-08-12 13:14, Paul Norman wrote:
>> The usage policy for tile.openstreetmap.org requires that users send a
>> valid user-agent[1], or, in the case of a web browser, a HTTP Referer.
>> Ops are looking into automatically rate limiting clients violating this
>> part of the policy.[2]
> I have wondered about this. Does rate limiting now not occur? I have seen a
> lot of times that the map in the JOSM downloadscreen gets slow if you pan
> around a lot or use it a lot to download lots of small areas. Also the
> mapnik overlay has this issue.

There is already throttling based on other aspects of the requests to
the tileservers (specifically, IP address). So you might be seeing

> Of course this can also be due to other issues.

Yep, the tileservers have been overloaded recently too. You're most
likely to notice when you get slow or missing requests at high zoom


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