{"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\/it\/blog\/news\/pervyj-stabilnyj-vypusk-grafo-orientirovannoj-subd-nebula-graph","title":{"rendered":"Prima versione stabile del DBMS orientato ai grafi 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\">Si \u00e8 tenuto<\/a><\/noindex> rilascio di un DBMS open-source <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/\">Nebula Graph 1.0.0<\/a><\/noindex>, progettato per un'efficace memorizzazione di grandi set di dati interconnessi che formano un grafo, il quale pu\u00f2 contare miliardi di nodi e trilioni di collegamenti. Il progetto \u00e8 scritto in C++ e <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/vesoft-inc\/nebula\">\u00e8 distribuito<\/a><\/noindex> sotto licenza Apache 2.0. Le librerie cliente per l'interazione con il DBMS sono state preparate per i linguaggi Go, Python e Java. La startup VESoft, sviluppatrice del DBMS, ha ricevuto alcuni giorni fa <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/posts\/nebula-graph-raises-8-million-dollars-in-series-pre-a-funding\/\">ha ottenuto<\/a><\/noindex> il primo round di finanziamenti di 8 milioni di dollari.<\/p>\n<p>Nel DBMS  <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/en\/posts\/nebula-graph-architecture-overview\/\">applicato<\/a><\/noindex> \u00e8 presente un'architettura distribuita senza condivisione delle risorse (shared-nothing), che prevede l'esecuzione di processi di elaborazione delle richieste graphd e processi di memorizzazione storaged indipendenti e autosufficienti. La gestione del movimento dei dati e la fornitura di meta-informazioni sul grafo sono a carico di un meta-servizio. Per garantire la coerenza dei dati viene utilizzato un protocollo basato sull'algoritmo <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=\"Prima versione stabile del DBMS orientato ai grafi Nebula Graph\" src=\"\/wp-content\/uploads\/2020\/06\/446a4b199534d9038997d348a3bc52b4.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Le principali caratteristiche di Nebula Graph:<\/p>\n<ul>\n<li class=\"l\"> Garantire <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/posts\/access-control-design-code-nebula-graph\/\">sicurezza<\/a><\/noindex> attraverso l'accesso concesso solo agli utenti autenticati, i cui diritti sono definiti attraverso un sistema di gestione degli accessi basato sui ruoli (RBAC).\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/en\/posts\/nebula-graph-storage-engine-overview\/\">Capacit\u00e0<\/a><\/noindex> collegamenti con diversi tipi di motori di memorizzazione. Supporto per l'estensione del linguaggio di query con nuovi algoritmi.\n<li class=\"l\"> Garantire latenze minime nella lettura o scrittura dei dati e mantenere un'elevata capacit\u00e0 di elaborazione. Durante <noindex><a rel=\"nofollow\" href=\"https:\/\/discuss.nebula-graph.io\/t\/nebula-graph-1-0-benchmark-report\/581\">i test<\/a><\/noindex>  su un cluster con un nodo graphd e tre nodi storaged, un DB di dimensioni 632 GB, comprendente un grafo di 1,2 miliardi di vertici e 8,4 miliardi di archi, ha mostrato latenze dell'ordine di alcuni millisecondi e una capacit\u00e0 di elaborazione fino a 140.000 richieste al secondo.\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/discuss.nebula-graph.io\/uploads\/default\/original\/1X\/827701da186cb78cfe41577010be0c7624a595c3.png\"><img decoding=\"async\" alt=\"Prima versione stabile del DBMS orientato ai grafi Nebula Graph\" src=\"\/wp-content\/uploads\/2020\/06\/91df2fe585bcbaf85dcc55b33fe3ef31.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> Scalabilit\u00e0 lineare.\n<li class=\"l\"> Linguaggio di query simile a SQL, sufficientemente potente e facile da comprendere. Supporto per operazioni come GO (traversata bidirezionale dei nodi del grafo), GROUP BY, ORDER BY, LIMIT, UNION, UNION DISTINCT, INTERSECT, MINUS, PIPE (utilizzo del risultato della query precedente). Supporta indici e variabili definite dall'utente.\n<li class=\"l\"> Garantire alta disponibilit\u00e0 e resilienza ai guasti.\n<li class=\"l\"> Supporto per la creazione di snapshot dello stato del DB per semplificare le operazioni di backup.\n<li class=\"l\"> Pronto per l'uso industriale (gi\u00e0 utilizzato nelle infrastrutture delle aziende JD, Meituan e Xiaohongshu).\n<li class=\"l\"> Possibilit\u00e0 di modificare lo schema di archiviazione e aggiornamento dei dati senza fermare o influenzare le operazioni in corso.\n<li class=\"l\"> Supporto TTL per limitare la vita dei dati.\n<li class=\"l\"> Comandi per gestire le impostazioni e gli host di archiviazione.\n<li class=\"l\"> Strumenti per gestire i lavori e pianificare l'esecuzione dei lavori (attualmente supportati i lavori COMPACT e FLUSH).\n<li class=\"l\"> Operazioni per la ricerca del percorso completo e del percorso pi\u00f9 breve tra i vertici specificati.\n<li class=\"l\"> Interfaccia OLAP per integrazione con piattaforme analitiche di terze parti.\n<li class=\"l\"> Utilit\u00e0 per importare dati da file CSV o da Spark.\n<li class=\"l\"> Esportazione di metriche per il monitoraggio tramite Prometheus e Grafana.\n<li class=\"l\"> Interfaccia web<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/vesoft-inc\/nebula-web-docker\">Nebula Graph Studio<\/a><\/noindex> per visualizzare operazioni sul grafo, navigare nel grafo, progettare schemi di archiviazione e caricare dati.<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=\"Prima versione stabile del DBMS orientato ai grafi 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>Fonte: <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 5.0.1.1 - 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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