[OSM-dev] OSM API lookups to complement minutely diffs?

[Stefan Keller]

2016-09-16 1:30 GMT+02:00 Frederik Ramm <frederik at remote.org>:
> This reads to me like:
>
> "There is a third-party service that solves the problem I have, but
> because it is experimental, I would like to build my own experimental
> third-party service instead" ;)

You convinced me to use augmented diffs with your irresistible
argumentation :-).
Although the very nature of experiments (including mine) is such that
they are possibly transient.

Is there any XML Schema (xsd) of the augmented diffs - or is the code
[2] the documentation [1] ;-) ?

:Stefan

[1] http://wiki.openstreetmap.org/wiki/Overpass_API/Augmented_Diffs
[2] https://github.com/drolbr/Overpass-API/



2016-09-16 1:30 GMT+02:00 Frederik Ramm <frederik at remote.org>:
> Hi,
>
> On 09/15/2016 10:53 PM, Stefan Keller wrote:
>> AFAIK augmented diffs are rather an experimental feature and I'd like
>> to avoid the latency time and blackouts of overpass which runs in same
>> server. So I'm concentrating on the main OSM API.
>
> This reads to me like:
>
> "There is a third-party service that solves the problem I have, but
> because it is experimental, I would like to build my own experimental
> third-party service instead" ;)
>
> The augmented diffs were made to solve exactly the problem you have. The
> underlying idea that Overpass implements - load updates from OSM into
> its own full history database and generate augmented diffs using that
> database - is by far the best solution in terms of load caused on the
> central servers. It also scales nicely; if a thousand people decide to
> run Overpass instances to produce their own augmented diffs then the API
> won't suffer.
>
> If you cannot work with overpass but must implement your own version of
> that, then you should at least copy the principle. The central OSM API
> is meant to support editing activity and doesn't scale to support use
> cases like yours (especially if others come after you and decide they
> need their own system because yours is experimental ;)
>
> Bye
> Frederik
>
> --
> Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"
>
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