[openstreetmap/openstreetmap-website] Idempotency for API 0.6 (#2201)

mmd notifications at github.com
Sat Apr 20 17:30:26 UTC 2019

> obviously the far simpler solution to the whole issue is to generate a checksum with a suitable method and return an error to the application in question

I indeed thought about this, too. Sending an error message instead of the diffResult response might not be what editors are expecting, but yes that's an option for sure. I haven't really thought about some strange corner cases yet, where creating the same object twice would be a legitimate operation from an editor's pov. Maybe that's entirely theoretical thing only.

> while you might get the JOSM devs to use a indempotent-token-whatever your random web browser based application out there is not going to do so

This isn't a JOSM only show. Every editor dev team is free to adopt whatever concept we come up with, if they think it's important enough for them (or their users).

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