{"id":86322,"date":"2020-06-24T01:42:23","date_gmt":"2020-06-23T23:42:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pervyj-stabilnyj-vypusk-grafo-orientirovannoj-subd-nebula-graph"},"modified":"2020-06-24T01:42:23","modified_gmt":"2020-06-23T23:42:23","slug":"pervyj-stabilnyj-vypusk-grafo-orientirovannoj-subd-nebula-graph","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/pervyj-stabilnyj-vypusk-grafo-orientirovannoj-subd-nebula-graph","title":{"rendered":"F\u00f8rste stabile udgave af graf-orienderet DBMS Nebula Graph","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/vesoft-inc\/nebula\/releases\/tag\/v1.0.0\">Har fundet sted<\/a><\/noindex> udgivelsen af den \u00e5bne DBMS <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/\">Nebula Graph 1.0.0<\/a><\/noindex>, designet til effektiv opbevaring af store m\u00e6ngder sammenkoblede data, der danner en graf med milliarder af noder og trillioner af forbindelser. Projektet er skrevet i C++ og <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/vesoft-inc\/nebula\">distribueres<\/a><\/noindex> er under Apache 2.0-licensen. Klientbiblioteker til adgang til DBMS'en er forberedt til sprog som Go, Python og Java. Startuppen VESoft, der udvikler DBMS, modtog for nogle dage siden <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/posts\/nebula-graph-raises-8-million-dollars-in-series-pre-a-funding\/\">har modtaget<\/a><\/noindex> den f\u00f8rste tranche investeringer p\u00e5 8 millioner dollars.<\/p>\n<p>I DBMS'en  <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/en\/posts\/nebula-graph-architecture-overview\/\">typeforbindelse<\/a><\/noindex> er der en distribueret arkitektur uden ressourceunderopdeling (shared-nothing), hvilket indeb\u00e6rer k\u00f8rsel af uafh\u00e6ngige og selvforsynende processer til foresp\u00f8rgselsbehandling (graphd) og lagringsprocesser (storaged). Orkestrering af databev\u00e6gelser og levering af metadata om grafen h\u00e5ndteres af en metatjeneste. For at sikre datakonsistens bruges en protokol baseret p\u00e5 algoritmen <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Raft_(computer_science)\">RAFT<\/a><\/noindex>.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/raw.githubusercontent.com\/vesoft-inc\/nebula-docs\/master\/images\/Nebula%20Arch.png\"><img decoding=\"async\" alt=\"F\u00f8rste stabile udgave af graf-orienderet DBMS Nebula Graph\" src=\"\/wp-content\/uploads\/2020\/06\/446a4b199534d9038997d348a3bc52b4.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Hovedfunktioner i Nebula Graph:<\/p>\n<ul>\n<li class=\"l\"> Sikring af <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/posts\/access-control-design-code-nebula-graph\/\">sikkerhed<\/a><\/noindex> ved kun at give adgang til autentificerede brugere, hvis rettigheder defineres via et rollebaseret adgangskontrolsystem (RBAC).\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/en\/posts\/nebula-graph-storage-engine-overview\/\">Mulighed<\/a><\/noindex> tilslutning af forskellige typer lagringsmotorer. Underst\u00f8ttelse af udvidelsen af foresp\u00f8rgselssprog med nye algoritmer.\n<li class=\"l\"> Sikring af minimale forsinkelser ved l\u00e6sning eller skrivning af data og opretholdelse af h\u00f8j gennemstr\u00f8mning. I <noindex><a rel=\"nofollow\" href=\"https:\/\/discuss.nebula-graph.io\/t\/nebula-graph-1-0-benchmark-report\/581\">testning<\/a><\/noindex>  et klynge best\u00e5ende af en graphd-node og tre storaged-noder med en database p\u00e5 632 GB, der indeholder en graf med 1,2 milliarder noder og 8,4 milliarder kanter, var forsinkelserne p\u00e5 niveau med nogle f\u00e5 millisekunder, og gennemstr\u00f8mningen n\u00e5ede op til 140.000 foresp\u00f8rgsler pr. sekund.\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/discuss.nebula-graph.io\/uploads\/default\/original\/1X\/827701da186cb78cfe41577010be0c7624a595c3.png\"><img decoding=\"async\" alt=\"F\u00f8rste stabile udgave af graf-orienderet DBMS Nebula Graph\" src=\"\/wp-content\/uploads\/2020\/06\/91df2fe585bcbaf85dcc55b33fe3ef31.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> Line\u00e6r skalerbarhed.\n<li class=\"l\"> SQL-lignende foresp\u00f8rgselssprog, der er b\u00e5de kraftfuldt og let at forst\u00e5. Underst\u00f8ttede operationer inkluderer GO (tovejsovergang af grafnoder), GROUP BY, ORDER BY, LIMIT, UNION, UNION DISTINCT, INTERSECT, MINUS, PIPE (brug af resultatet fra den tidligere foresp\u00f8rgsel). Indekser og brugerdefinerede variabler underst\u00f8ttes.\n<li class=\"l\"> Sikring af h\u00f8j tilg\u00e6ngelighed og fejlsikkerhed.\n<li class=\"l\"> Underst\u00f8ttelse af oprettelse af snapshots af database tilstand for at lette oprettelsen af backup.\n<li class=\"l\"> Klar til industriel anvendelse (allerede i brug i infrastrukturen hos virksomheder som JD, Meituan og Xiaohongshu).\n<li class=\"l\"> Mulighed for at \u00e6ndre lagringsskemaet og opdatere data uden at stoppe eller p\u00e5virke igangv\u00e6rende operationer.\n<li class=\"l\"> TTL-support for limiting the lifespan of data.\n<li class=\"l\"> Commands for managing storage settings and hosts.\n<li class=\"l\"> Tools for job management and scheduling (currently, only COMPACT and FLUSH jobs are supported).\n<li class=\"l\"> Operations for finding the full path and the shortest path between given vertices.\n<li class=\"l\"> OLAP interface for integration with third-party analytics platforms.\n<li class=\"l\"> Utilities for importing data from CSV files or from Spark.\n<li class=\"l\"> Eksport af metrics til overv\u00e5gning ved hj\u00e6lp af Prometheus og Grafana.\n<li class=\"l\"> Web-interface<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/vesoft-inc\/nebula-web-docker\">Nebula Graph Studio<\/a><\/noindex> til visualisering af grafoperationer, navigation i grafen, design af lagringsskema og dataindl\u00e6sning.<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/user-images.githubusercontent.com\/40747875\/73912446-7d9c4b80-48ef-11ea-8fd2-14af27de8a69.png\"><img decoding=\"async\" alt=\"F\u00f8rste stabile udgave af graf-orienderet DBMS Nebula Graph\" src=\"\/wp-content\/uploads\/2020\/06\/f27f8b0164940a87410c2ed9b1ebf699.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53222\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0421\u0423\u0411\u0414 Nebula Graph 1.0.0, \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. \u0420\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0421\u0423\u0411\u0414 \u0441\u0442\u0430\u0440\u0442\u0430\u043f VESoft [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":86323,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-86322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0421\u0423\u0411\u0414 Nebula Graph.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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