Ostrzyciel added a comment.
In T206560#7068941 <https://phabricator.wikimedia.org/T206560#7068941>, @So9q wrote: > Today I presented a new found alternative to Blazegraph and the bridge in the telegram wikidata chat. > See https://github.com/ontop/ontop > Can it do the job? > No need for sparql update and moving data around it seems. > > Could someone take a closer look? Well, the first issue is that it doesn't support many features of WDQS that I would consider "kinda important" like property paths, federation and parts of GeoSPARQL: https://ontop-vkg.org/guide/compliance.html The second (and probably much more serious) issue is performance: RDF stores are optimized for SPARQL queries, SQL DBs are not. I haven't tested it, but I would bet with confidence that Ontop can't come close to Blazegraph's level of performance. Their own paper <https://research.bcgl.fr/pdfs/ontop-iswc20.pdf> lists several perf comparison studies, but all of them involve only similar (virtual knowledge graph) solutions and no real RDF stores. Raises an eyebrow, if you ask me. :) TASK DETAIL https://phabricator.wikimedia.org/T206560 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Ostrzyciel Cc: Ostrzyciel, GreenReaper, WMDE-leszek, Salgo60, So9q, Krabina, Jecummings4, TomT0m, Akuckartz, Susannaanas, Addshore, Andrawaag, Gehel, Lucas_Werkmeister_WMDE, Aklapper, Smalyshev, Invadibot, MPhamWMF, Jtm-lis, maantietaja, NavinRizwi, CBogen, Isaacandy, Demian, Olson.jared.m, Nandana, Namenlos314, Lahi, Gq86, Bryandamon, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, _jensen, rosalieper, Scott_WUaS, Jonas, Xmlizer, Steko, Samwilson, PhotographerTom, suriyaa, Psychoslave, tosfos, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Darenwelsh, Dinoguy1000, Manybubbles, Foxtrott, brion, Mbch331, MarkAHershberger
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