{"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 svolto<\/a><\/noindex> rilascio del database open source <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/\">Nebula Graph 1.0.0<\/a><\/noindex>, progettato per l'archiviazione efficiente di grandi volumi di dati interconnessi, formando un grafico che pu\u00f2 contenere 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\">distribuito<\/a><\/noindex> \u00e8 distribuito sotto la licenza Apache 2.0. Le librerie client per interagire con il database sono state preparate per i linguaggi Go, Python e Java. La startup VESoft, sviluppatrice del database, ha recentemente <noindex><a rel=\"nofollow\" href=\"https:\/\/nebula-graph.io\/posts\/nebula-graph-raises-8-million-dollars-in-series-pre-a-funding\/\">ha ricevuto<\/a><\/noindex> ricevuto un primo round di investimenti di 8 milioni di dollari.<\/p>\n<p>Nel database  <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 gestione delle richieste graphd e di archiviazione storaged indipendenti e autosufficienti. L'orchestrazione del movimento dei dati e la fornitura di metainformazioni sul grafico sono gestite da un servizio meta. 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\/\">per la sicurezza<\/a><\/noindex> l'accesso solo agli utenti autenticati, i cui diritti sono definiti tramite 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\/\">Possibilit\u00e0<\/a><\/noindex> la connessione di diversi tipi di motori di archiviazione. Supporto per l'estensione del linguaggio di interrogazione con nuovi algoritmi.\n<li class=\"l\"> Garantire latenze minime nella lettura o scrittura dei dati e mantenere un'alta capacit\u00e0 di elaborazione. In <noindex><a rel=\"nofollow\" href=\"https:\/\/discuss.nebula-graph.io\/t\/nebula-graph-1-0-benchmark-report\/581\">testing<\/a><\/noindex>  un cluster con un nodo graphd e tre nodi storaged, il database di 632 GB, contenente un grafo di 1,2 miliardi di vertici e 8,4 miliardi di archi, ha mostrato latenze di pochi millisecondi e 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. Supportate operazioni come GO (attraversamento bidirezionale dei nodi del grafo), GROUP BY, ORDER BY, LIMIT, UNION, UNION DISTINCT, INTERSECT, MINUS, PIPE (utilizzo del risultato della query precedente). Supporto per 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 database per semplificare la creazione di backup.\n<li class=\"l\"> Pronto per l'uso industriale (gi\u00e0 utilizzato nell'infrastruttura di aziende come JD, Meituan e Xiaohongshu).\n<li class=\"l\"> Possibilit\u00e0 di modificare lo schema di archiviazione e aggiornare i dati senza interrompere 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 impostazioni e host di archiviazione.\n<li class=\"l\"> Strumenti per gestire le attivit\u00e0 e pianificare l'esecuzione di lavori (al momento sono supportati solo COMPACT e FLUSH).\n<li class=\"l\"> Operazioni di ricerca del percorso completo e del percorso pi\u00f9 breve tra nodi specificati.\n<li class=\"l\"> Interfaccia OLAP per integrazione con piattaforme di analisi 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 lo schema 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 5.0.0.1 - 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 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