{"id":104672,"date":"2022-07-19T15:36:50","date_gmt":"2022-07-19T13:36:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-grafo-orientirovannoj-subd-nebula-graph-3-2"},"modified":"2022-07-19T15:36:50","modified_gmt":"2022-07-19T13:36:50","slug":"vypusk-grafo-orientirovannoj-subd-nebula-graph-3-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/no\/blog\/news\/vypusk-grafo-orientirovannoj-subd-nebula-graph-3-2","title":{"rendered":"Utgivelse av den graf-orienterte DBMS Nebula Graph 3.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Utgitt en ny versjon av den \u00e5pne databasen Nebula Graph 3.2, som er ment for effektiv lagring av store, sammenkoblede datasett som danner en graf med milliarder av noder og trillioner av forbindelser. Prosjektet er skrevet i C++ og distribueres under Apache 2.0-lisensen. Klientbiblioteker for \u00e5 f\u00e5 tilgang til databasen er utviklet for spr\u00e5kene Go, Python og Java.     <\/p>\n<p>Databasen benytter en distribuert arkitektur uten ressursdeling (shared-nothing), som inneb\u00e6rer kj\u00f8ring av uavhengige og selvstendige prosesser for foresp\u00f8rselsh\u00e5ndtering (graphd) og lagringsprosesser (storaged). Orkestreringen av databevegelser og levering av metainformasjon om grafen h\u00e5ndteres av en metaservice. For \u00e5 sikre datakonsistens benyttes en protokoll basert p\u00e5 RAFT-algoritmen.      <\/p>\n<p>Sikring  <\/p>\n<ul>\n<li class=\"l\"> Sikkerhet sikres ved \u00e5 gi tilgang kun til autentiserte brukere, hvis rettigheter defineres gjennom et system for tilgangskontroll basert p\u00e5 roller (RBAC).    <\/li>\n<li class=\"l\"> Mulighet for \u00e5 koble til ulike typer lagringsmotorer. St\u00f8tte for utvidelse av sp\u00f8rringsspr\u00e5ket med nye algoritmer.    <\/li>\n<li class=\"l\"> Sikring av minimal ventetid ved lesing eller skriving av data og opprettholdelse av h\u00f8y gjennomstr\u00f8mning. Under testing i et kluster med \u00e9n node av graphd og tre noder av storaged, med en database p\u00e5 632 GB, inkludert en graf med 1,2 milliarder noder og 8,4 milliarder kanter, var ventetiden p\u00e5 niv\u00e5 med noen millisekunder, mens gjennomstr\u00f8mningen n\u00e5dde opp til 140 000 foresp\u00f8rsel per sekund.    <\/li>\n<li class=\"l\"> SQL-liknende sp\u00f8rringsspr\u00e5k, tilstrekkelig kraftig og enkelt \u00e5 oppfatte. Operasjoner som GO (to-veis traversering av grafens noder), GROUP BY, ORDER BY, LIMIT, UNION, UNION DISTINCT, INTERSECT, MINUS, PIPE (bruk av resultatet fra den forrige foresp\u00f8rselen) st\u00f8ttes. Indekser og brukerdefinerte variabler st\u00f8ttes.  <\/li>\n<li class=\"l\"> Sikring av h\u00f8y tilgjengelighet og motstandsdyktighet mot feil.    <\/li>\n<li class=\"l\"> St\u00f8tte for oppretting av \u00f8yeblikksbilder av DB-tilstanden for \u00e5 forenkle oppretting av sikkerhetskopier.    <\/li>\n<li class=\"l\"> Klar for industriell bruk (allerede i bruk i infrastrukturen til selskaper som JD, Meituan og Xiaohongshu).  <\/li>\n<li class=\"l\"> Klar til industriell bruk (allerede brukt i infrastrukturen til selskapene JD, Meituan og Xiaohongshu).  <\/li>\n<li class=\"l\"> Mulighet for \u00e5 endre lagringsskjema og oppdatering av data uten stopp eller innvirkning p\u00e5 utf\u00f8rte operasjoner.    <\/li>\n<li class=\"l\"> St\u00f8tte for TTL for \u00e5 begrense levetiden til data.  <\/li>\n<li class=\"l\"> Kommandoer for \u00e5 administrere innstillinger og lagringsverter.  <\/li>\n<li class=\"l\"> Verkt\u00f8y for \u00e5 administrere oppgaver og planlegge kj\u00f8ring av oppgaver (for \u00f8yeblikket st\u00f8ttes kun COMPACT og FLUSH).  <\/li>\n<li class=\"l\"> Operasjoner for \u00e5 finne den komplette veien og den korteste veien mellom angitte noder.  <\/li>\n<li class=\"l\"> OLAP-grensesnitt for integrasjon med eksterne analyseplattformer.  <\/li>\n<li class=\"l\"> Verkt\u00f8y for \u00e5 importere data fra CSV-filer eller fra Spark.  <\/li>\n<li class=\"l\"> Eksport av metrikker for overv\u00e5king ved hjelp av Prometheus og Grafana.    <\/li>\n<li class=\"l\"> Web-grensesnittet Nebula Graph Studio for visualisering av grafoperasjoner, navigasjon i grafen, design av lagringsskjema og datalasting.      <\/ul>\n<p>I den nye utgaven:  <\/p>\n<ul>\n<li class=\"l\"> St\u00f8tte for funksjonen extract() er lagt til for \u00e5 trekke ut en substring som samsvarer med et angitt uttrykk.\n<li class=\"l\"> Innstillingene i konfigurasjonsfilen er optimalisert.\n<li class=\"l\"> Optimaliseringsregler for fjerning av un\u00f8dvendige AppendVertices-operat\u00f8rer og deaktivere bruk av kanter og nodefiltre er lagt til.\n<li class=\"l\"> Volumet av data som kopieres for JOIN-operasjonen, samt for Traverse- og AppendVertices-operat\u00f8rene, er redusert.\n<li class=\"l\"> Ytelsen til SHORTEST PATH og SUBGRAPH er optimalisert.\n<li class=\"l\"> Minnefordelingen er forbedret (Arena Allocator er aktivert).      <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57522\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0421\u0423\u0411\u0414 Nebula Graph 3.2, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043a\u0440\u0443\u043f\u043d\u044b\u0445 \u043d\u0430\u0431\u043e\u0440\u043e\u0432 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445, \u043e\u0431\u0440\u0430\u0437\u0443\u044e\u0449\u0438\u0445 \u0433\u0440\u0430\u0444, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u0435\u0442 \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0442\u044c \u043c\u0438\u043b\u043b\u0438\u0430\u0440\u0434\u044b \u0443\u0437\u043b\u043e\u0432 \u0438 \u0442\u0440\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0441\u0432\u044f\u0437\u0435\u0439. \u041f\u0440\u043e\u0435\u043a\u0442 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421++ \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. \u041a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a \u0421\u0423\u0411\u0414 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0434\u043b\u044f \u044f\u0437\u044b\u043a\u043e\u0432 Go, Python \u0438 Java. \u0412 \u0421\u0423\u0411\u0414 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u0430\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104672","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0421\u0423\u0411\u0414 Nebula Graph 3.2, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043a\u0440\u0443\u043f\u043d\u044b\u0445 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