| Addshore added a comment. |
No, this has horrible performance impact if several edits happen in a row, since it only fetches the oldid, not the latest one, so instead of one update with the latest ID you get 10 updates with each of the intermediate IDs.
I think we have had this exact conversation on another ticket before
In any case, stale reads are discussed in T212550.
I was going to comment on T212550. but it didn't quite fit so will comment here
It almost sounds like rather than having a live stream of edit events, or at least acting entirely on a live stream of edit events, the updater should instead do internal batching (waiting for a few seconds before trying to get the updated data to see if there are subsequent writes) or it should be listening to an event stream that already does this (events batches in mediawiki).
Such a batched event stream probably only makes sense for wikibase edits? it could look something like (entity:Q123,latestrev:123,changecount:5) for example.
I could be making assumptions about the finomation the updater needs here.
I'm going to stop thinking on this topic now (unless poked)
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