dcausse added a comment.
The approach taken is: - from nginx control a new header named 'x-monitoring-query' set to true if a list of criteria is met (currently using user-agent strings but could be extended to using source IPs as well I suppose) - from blazegraph, do not log query with the header `x-monitoring-query` set - adapt `Wikidata.org` to allow tuning the //minimal query rate// expected to be served from a pooled served (was hardcoded to 1.0) - change the systemd timer that runs `updateQueryServiceLag.php` to set `--pooled-server-min-query-rate` to 0.5 (will need to double check that this value is sane and works well for codfw and eqiad servers) TASK DETAIL https://phabricator.wikimedia.org/T360993 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: dcausse Cc: bking, Aklapper, dcausse, Danny_Benjafield_WMDE, Isabelladantes1983, Themindcoder, Adamm71, S8321414, Jersione, Hellket777, LisafBia6531, Astuthiodit_1, AWesterinen, 786, Biggs657, karapayneWMDE, Invadibot, maantietaja, Juan90264, Alter-paule, Beast1978, ItamarWMDE, Un1tY, Akuckartz, Hook696, Kent7301, joker88john, CucyNoiD, Nandana, Namenlos314, Gaboe420, Giuliamocci, Cpaulf30, Lahi, Gq86, Af420, Bsandipan, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, EBjune, KimKelting, merbst, LawExplorer, Lewizho99, Maathavan, _jensen, rosalieper, Neuronton, Scott_WUaS, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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