Fremantle
Persisting your ids … by SimonPoole on 8 March 2026:
you need to not just store the elements_type_, its id and its version, you need to store an associated timestamp, in the simplest case the time when you retrieved the element to create the mapping. To then check if the object has been further modified if the version hasn’t changed, retrieve the element and recursively compare your timestamp to that of the child elements, if any of them are more recent than your timestamp, yes the object has been changed. No need to use historic data or anything exotic, the current OSM data is enough. You could even envision providing an API for this.
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