{"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\/da\/blog\/news\/vypusk-grafo-orientirovannoj-subd-nebula-graph-3-2","title":{"rendered":"Udgivelsen af den graf-orienterede database Nebula Graph 3.2.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Udgivelsen af den \u00e5bne database Nebula Graph 3.2 er blevet offentliggjort, designet til effektiv lagring af store s\u00e6t af relaterede data, der danner et graf, der kan indeholde milliarder af noder og billioner af forbindelser. Projektet er skrevet i C++ og distribueres under Apache 2.0-licensen. Klientbiblioteker til interaktion med databasen er udarbejdet til sprog som Go, Python og Java.     <\/p>\n<p>Databasen anvender en distribueret arkitektur uden ressourceopdeling (shared-nothing), hvilket indeb\u00e6rer, at uafh\u00e6ngige og selvforsynende processer til behandling af foresp\u00f8rgsler (graphd) og lagringsprocesser (storaged) k\u00f8rer. Orkestreringen af dataflytning og levering af metadata om grafen h\u00e5ndteres af en metaservice. For at sikre datakonsistens anvendes en protokol baseret p\u00e5 RAFT-algoritmen.      <\/p>\n<p>Hovedfunktioner i Nebula Graph:  <\/p>\n<ul>\n<li class=\"l\"> Sikkerhed gennem adgang, der kun gives til autentificerede brugere, hvis rettigheder defineres via et rollebaseret adgangsstyringssystem (RBAC).    <\/li>\n<li class=\"l\"> Mulighed for at tilslutte forskellige typer lagringsmotorer. Underst\u00f8ttelse af udvidelse af foresp\u00f8rgselssproget med nye algoritmer.    <\/li>\n<li class=\"l\"> Sikring af minimale forsinkelser ved l\u00e6sning eller skrivning af data og opretholdelse af h\u00f8j gennemstr\u00f8mning. Under testning i en klynge best\u00e5ende af \u00e9n graphd-node og tre storaged-noder med en database p\u00e5 632 GB, der inkluderede en graf med 1,2 milliarder noder og 8,4 milliarder kanter, l\u00e5 forsinkelserne p\u00e5 niveau med flere millisekunder, og gennemstr\u00f8mningen n\u00e5ede op til 140.000 foresp\u00f8rgsler per sekund.    <\/li>\n<li class=\"l\"> Line\u00e6r skalerbarhed.  <\/li>\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.    <\/li>\n<li class=\"l\"> Sikring af h\u00f8j tilg\u00e6ngelighed og fejlsikkerhed.    <\/li>\n<li class=\"l\"> Underst\u00f8ttelse af oprettelse af snapshots af database tilstand for at lette oprettelsen af backup.  <\/li>\n<li class=\"l\"> Klar til industriel anvendelse (allerede i brug i infrastrukturen hos virksomheder som JD, Meituan og Xiaohongshu).  <\/li>\n<li class=\"l\"> Mulighed for at \u00e6ndre lagringsskemaet og opdatere data uden at stoppe eller p\u00e5virke igangv\u00e6rende operationer.    <\/li>\n<li class=\"l\"> TTL-support for limiting the lifespan of data.  <\/li>\n<li class=\"l\"> Commands for managing storage settings and hosts.  <\/li>\n<li class=\"l\"> Tools for job management and scheduling (currently, only COMPACT and FLUSH jobs are supported).  <\/li>\n<li class=\"l\"> Operations for finding the full path and the shortest path between given vertices.  <\/li>\n<li class=\"l\"> OLAP interface for integration with third-party analytics platforms.  <\/li>\n<li class=\"l\"> Utilities for importing data from CSV files or from Spark.  <\/li>\n<li class=\"l\"> Export metrics for monitoring using Prometheus and Grafana.    <\/li>\n<li class=\"l\"> Web interface Nebula Graph Studio for visualizing graph operations, navigating the graph, designing the storage schema, and loading data.      <\/ul>\n<p>I den nye version:  <\/p>\n<ul>\n<li class=\"l\"> Support for the extract() function has been added to extract a substring that matches a specified expression.\n<li class=\"l\"> Configuration settings in the configuration file have been optimized.\n<li class=\"l\"> Optimization rules added for removing the useless AppendVertices operator and disabling the application of edge and vertex filters.\n<li class=\"l\"> Reduced the amount of data copied for the JOIN operation, as well as for the Traverse and AppendVertices operators.\n<li class=\"l\"> Performance of SHORTEST PATH and SUBGRAPH has been optimized.\n<li class=\"l\"> Improved memory allocation (Arena Allocator used).      <\/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 5.0.3 - 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 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