{"id":108647,"date":"2023-05-21T12:49:09","date_gmt":"2023-05-21T10:49:12","guid":{"rendered":"https:\/\/prohoster.info\/?p=108647"},"modified":"2023-05-22T10:28:52","modified_gmt":"2023-05-22T08:28:52","slug":"paypal-otkryl-kod-subd-junodb","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/paypal-otkryl-kod-subd-junodb","title":{"rendered":"PayPal har \u00f6ppnat koden f\u00f6r databashanteringssystemet JunoDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

F\u00f6retaget PayPal har \u00f6ppnat k\u00e4llkoden f\u00f6r den felresistenta databashanteraren JunoDB, som hanterar data i ett nyckel-v\u00e4rde-format. Systemet \u00e4r ursprungligen designat med fokus p\u00e5 h\u00f6g s\u00e4kerhet, horisontell skalbarhet, felresistens och f\u00f6rm\u00e5gan att hantera hundratusentals samtidiga anslutningar med f\u00f6ruts\u00e4gbara f\u00f6rdr\u00f6jningar. Hos PayPal \u00e4r n\u00e4stan alla tj\u00e4nster, fr\u00e5n anv\u00e4ndarinloggning till behandling av finansiella transaktioner, kopplade till JunoDB. Projektets kod \u00e4r skriven i Go (klientbibliotek i Java) och distribueras under Apache 2.0-licensen. Vid vidare utveckling kommer \u00e4ndringar, f\u00f6rb\u00e4ttringar och f\u00f6r\u00e4ndringar fr\u00e5n gemenskapen att beaktas. <\/p>\n

Arkitekturen f\u00f6r JunoDB \u00e4r baserad p\u00e5 anv\u00e4ndning av en lastbalanserare som tar emot f\u00f6rfr\u00e5gningar fr\u00e5n klientapplikationer och distribuerar dem mellan proxyservrar som samtidigt kontaktar en grupp servrar<\/a> lagringsservrar vid utf\u00f6randet av en f\u00f6rfr\u00e5gan. Varje proxyserver kopplar upp sig mot alla servrar<\/a> lagringsservrar och omdirigerar f\u00f6rfr\u00e5gningarna till lagringsservergruppen baserat p\u00e5 en partitioneringsindex som lagras i det distribuerade konfigurationslagret etcd.

\"PayPal<\/center> <\/p>\n

Data partitioneras och kopplas till lagringsnoder med hj\u00e4lp av hashning, vilket minskar datar\u00f6relser vid \u00f6kning eller minskning av noder i klustret. F\u00f6r att s\u00e4kerst\u00e4lla felresistens replikerar varje databasparti p\u00e5 flera lagringsnoder, vilket g\u00f6r att informationen bevaras vid haveri av enskilda servrar. St\u00f6d f\u00f6r skapande av geografiskt distribuerade lagringssystem finns, d\u00e4r grupper av noder \u00e4r placerade i olika datacenter.

\"PayPal<\/center> <\/p>\n

Data p\u00e5 lagringsnoder lagras i det operativa minnet eller i lokalt lagring baserat p\u00e5 RocksDB-biblioteket. Vid permanent lagring lagras data i krypterad form (krypteringsnyckeln kan definieras b\u00e5de av klienten och fastst\u00e4llas p\u00e5 proxy-niv\u00e5).

\"PayPal<\/center> <\/p>\n

F\u00f6r att f\u00e5 \u00e5tkomst till databasen fr\u00e5n applikationer tillhandah\u00e5lls ett klientbibliotek som erbjuder ett API f\u00f6r applikationer p\u00e5 spr\u00e5k som Java, Go och C++. Klientdelen \u00e4r s\u00e5 enkel som m\u00f6jligt, och komplex logik och inst\u00e4llningar har i m\u00f6jligaste m\u00e5n flyttats till databashanteraren. Interaktionen mellan klienten och lastbalanseraren eller proxy sker via en krypterad kommunikationskanal. F\u00f6r att hantera och skicka f\u00f6rfr\u00e5gningar kan kommandoradsgr\u00e4nssnittet anv\u00e4ndas, vilket \u00e5terskapar alla funktioner i klientens API. <\/p>\n

Systemet \u00e4r utformat f\u00f6r att hantera f\u00f6rfr\u00e5gningar med f\u00f6ruts\u00e4gbara l\u00e5ga latensniv\u00e5er. Till exempel kunde en kluster av tre lagringsnoder och en proxy, uppbyggd av milj\u00f6erna n1-highmem-32 (32 CPU Intel Xeon 2.30GHz, 214G RAM och 450G lagring baserat p\u00e5 SSD), leverera stabila latensniv\u00e5er som inte \u00f6versteg 2,5 ms i 95 % av fallen och 16 ms i 99 % vid hantering av 200 000 samtidiga TLS-anslutningar och en fl\u00f6de p\u00e5 15 000 f\u00f6rfr\u00e5gningar per sekund (vid 3000 samtidiga anslutningar och en fl\u00f6de p\u00e5 80 000 f\u00f6rfr\u00e5gningar per sekund \u00f6versteg latensen inte 6 ms i 95 % av fallen och 15 ms i 99 %). P\u00e5 PayPal hanterar tj\u00e4nster baserade p\u00e5 JunoDB cirka 350 miljarder f\u00f6rfr\u00e5gningar per dag.

\"PayPal<\/center>
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u0443\u044e \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0441\u0442\u044c, \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0441\u043e\u0442\u043d\u0438 \u0442\u044b\u0441\u044f\u0447 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u0441 \u043f\u0440\u0435\u0434\u0441\u043a\u0430\u0437\u0443\u0435\u043c\u044b\u043c\u0438 \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0430\u043c\u0438. \u0412 PayPal \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0432\u0441\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u044b, \u043e\u0442 \u0432\u0445\u043e\u0434\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0434\u043e \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0444\u0438\u043d\u0430\u043d\u0441\u043e\u0432\u044b\u0445 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439, \u0437\u0430\u0432\u044f\u0437\u0430\u043d\u044b \u043d\u0430 JunoDB. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":108648,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-108647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47PayPal \u00f6ppnade koden f\u00f6r databashanteraren JunoDB | ProHoster","description":"PayPal har \u00f6ppnat k\u00e4llkoden f\u00f6r den felresistenta databashanteraren JunoDB, som manipulerar data i formatet 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