Addshore added a comment.

  > The Wikidata tracking in Recent Changes feed seems to be still far too 
noisy for this purpose
  
  Yup. See T90435: [Epic] Wikidata watchlist improvements (client) 
<https://phabricator.wikimedia.org/T90435> and all subtasks.
  
  > I don't actually understand why they have that C property listed on 
wbc_entity_usage.
  
  If we have a concrete example to look at I can try to figure that out :)
  But indeed, the usage tracking for C.P### only means that a change to that 
statement might trigger a change to the page rendering.
  Being more certain is hard due to the flexibility of LUA and parser functions.
  
  A 'better' way to dispatch recent changes notifications might be to parser 
both the old and new versions of the page, compare, and only add an RC row if 
the content seems to have changes.
  Still not fool proof as some other magic on the page could cause the content 
to change, but would likely result in less RC entries.
  And of course this would mean double page parsing (for cases where there is 
no parser cache entry) which would be undesirable.

TASK DETAIL
  https://phabricator.wikimedia.org/T246709

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To: Addshore
Cc: hoo, Ladsgroup, Lydia_Pintscher, Addshore, Capt_Swing, Isaac, 
darthmon_wmde, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, 
_jensen, rosalieper, Scott_WUaS, Wikidata-bugs, aude, Mbch331
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