Serge Wroclawski writes:
This is expensive.
does this matter? Is there a requirement to have it running against the
latest r/w api?
I fetch my osm data for editing from the osm ro-mirror (overpass). This is
a lot faster than waiting for main API. Works fine as well.
Why not add another (or a 3rd, 4th, ...) ro-mirror for these special tasks.
load can be distributed quite easy onto different servers.
Could even be a database made specifically for these history calls. Just
preprocess the geometry.
And if it must be working with the latest revision because the data is
newer than a few minutes then the API could query this service and in case
it's not available there only then doing the expensive calls.
I once thought of implementing something like this. I think Peter already
has a prototype doing similar.
https://github.com/MaZderMind/OpenStreetMap-History-API
Stephan
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