Joe added a comment.

So, in conclusion, Wikidata has a lot of edits, but several magnitudes fewer views than a Wikipedia of comparable size. So, while MediaWiki generally optimizes for heavy read loads, the Wikidata UI should be optimized for frequent edits, but doesn't have to worry about performance of reads too terribly much. It may for instance be feasible to entirely bypass or ignore varnish caching for Wikidata.

Sounds of DBAs screaming in horror

Jokes aside:

  • we do caching at the edge for client-side performance, not just to alleviate the load on the servers. Our non-cached performance is already abysmal, I would add to it
  • unless there is a strong reason not to, we do not want to avoid caching to reduce the server-side load, which in the case of wikidata doesn't come from its own pageviews alone
  • Wikidata is already an unicorn, let's not make it even more different from anything else

TASK DETAIL
https://phabricator.wikimedia.org/T213318

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To: Joe
Cc: jijiki, CDanis, ArielGlenn, Milimetric, akosiaris, Joe, mobrovac, Krinkle, daniel, Lydia_Pintscher, Lea_WMDE, Addshore, Matthias_Geisler_WMDE, Jakob_WMDE, Pablo-WMDE, WMDE-leszek, Aklapper, Nandana, kostajh, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, D3r1ck01, SBisson, Wikidata-bugs, aude, GWicke, jayvdb, fbstj, santhosh, Jdforrester-WMF, Mbch331, Rxy, Jay8g, Ltrlg, bd808, Legoktm
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