{"id":121099,"date":"2024-12-20T21:46:00","date_gmt":"2024-12-20T19:46:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu"},"modified":"2024-12-20T21:46:00","modified_gmt":"2024-12-20T19:46:00","slug":"subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","title":{"rendered":"Il DB ScyllaDB \u00e8 passato da AGPL a una licenza proprietaria","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Gli sviluppatori del DB ScyllaDB hanno annunciato il passaggio del progetto a una licenza proprietaria che limita l'ambito di applicazione. La versione ScyllaDB 6.2.x sar\u00e0 l'ultima disponibile sotto licenza AGPL. Gli interessati possono creare un fork e continuare lo sviluppo del codice sorgente di ScyllaDB sotto la vecchia licenza.    <\/p>\n<p>In precedenza, il progetto ScyllaDB adottava un modello di sviluppo Open Core, in cui la parte base del prodotto viene sviluppata sotto licenza libera, mentre le funzionalit\u00e0 avanzate sono chiuse e fornite solo ai possessori di una licenza commerciale. Secondo il nuovo schema di licenza, la pubblicazione della versione open source di ScyllaDB OSS sar\u00e0 interrotta, mentre il prodotto commerciale precedentemente chiuso, ScyllaDB Enterprise, inizier\u00e0 a essere distribuito con la fornitura del codice sorgente sotto licenza proprietaria. Gli utenti potranno utilizzare gratuitamente la versione completa di ScyllaDB Enterprise rispettando una serie di condizioni.    <\/p>\n<p>La nuova licenza vieta l'uso del software per competere con i prodotti e servizi degli sviluppatori ScyllaDB, nonch\u00e9 per creare sistemi cloud \"applicazione come servizio\" (SaaS, software-as-a-service) e sistemi commerciali \"DB come servizio\" (dBaaS, database-as-a-service). La licenza non limita l'uso del prodotto gratuito per scopi commerciali e in ambienti di lavoro, a condizione che la dimensione totale dello storage su tutti i nodi del cluster non superi i 10 TB e che vengano utilizzati non pi\u00f9 di 50 VCPU per l'elaborazione dei dati. Gli utenti che non soddisfano i criteri dichiarati sono invitati ad acquistare una licenza commerciale.    <\/p>\n<p>Ad esempio, si pu\u00f2 utilizzare gratuitamente ScyllaDB su un cluster di tre nodi, se ogni nodo contiene 16 core logici CPU e uno spazio di archiviazione su disco di 3 TB. Una configurazione simile \u00e8 in grado di elaborare 100-200 mila operazioni al secondo. La distribuzione di ScyllaDB e le modifiche al codice sono consentite a condizione che vengano fornite con la stessa licenza, elencando tutte le modifiche e indicando informazioni sull'autore originale del prodotto.     <\/p>\n<p>Il motivo dietro il cambiamento della politica di distribuzione di ScyllaDB \u00e8 stata la volont\u00e0 di unificare e ottimizzare lo sviluppo delle versioni commerciali e open source concorrenti, il cui mantenimento separato creava difficolt\u00e0, richiedeva molte energie e consumava risorse. Inoltre, a causa della complessit\u00e0 dell'architettura interna, la base di codice di ScyllaDB si \u00e8 sviluppata esclusivamente grazie agli sforzi dei dipendenti dell'azienda e il progetto open source non ha mai visto l'arrivo di collaboratori esterni per apportare modifiche. Un punto di svolta \u00e8 stata l'implementazione dell'algoritmo di consenso Raft, delle tabelle e del supporto API S3 integrato, grazie alla quale molte funzioni ausiliarie sono state trasferite da applicazioni esterne al nucleo del DBMS.     <\/p>\n<p>Alla fine \u00e8 stata presa la decisione di unire i prodotti open source e commerciali, il che da un lato semplificher\u00e0 lo sviluppo e dall'altro allargher\u00e0 le possibilit\u00e0 della versione gratuita. Ad esempio, gli utenti che rientrano nei limiti gratuiti avranno accesso a funzionalit\u00e0 come il supporto LDAP, ottimizzazioni PGO (riduzione della latenza nei testi del 33% e aumento delle prestazioni fino al 50%), modalit\u00e0 di streaming a livello di file (accelerazione dell'aggiunta\/rimozione di nodi fino a 30 volte), possibilit\u00e0 di stabilire priorit\u00e0 diverse per i vari carichi, supporto per la compressione del traffico RPC tra i nodi utilizzando l'algoritmo ZSTD, una strategia di impacchettamento dei dati migliorata (riduzione delle dimensioni dello storage fino al 35%) e supporto per la crittografia, operatore Kubernetes per ScyllaDB, ciclo di supporto prolungato per le versioni.                    <\/p>\n<p>ScyllaDB consente di creare sistemi noSQL distribuiti, scalabili e resilienti, memorizzando i dati sotto forma di array associativi (hash) con pi\u00f9 livelli di nidificazione. Per le query strutturate \u00e8 possibile utilizzare un linguaggio simile a SQL chiamato CQL (Cassandra Query Language). I cluster basati su ScyllaDB offrono un livello di scalabilit\u00e0 lineare, in cui le prestazioni sono direttamente proporzionali al numero di core della CPU. I dati memorizzati nel database vengono automaticamente replicati su pi\u00f9 nodi, e in caso di guasto di un nodo, le sue funzioni vengono assunte al volo da altri nodi. L'aggiunta, l'aggiornamento e la rimozione dei nodi nel cluster avviene senza interrompere il servizio e senza la necessit\u00e0 di riconfigurare altri nodi.        <\/p>\n<p>Il DBMS ScyllaDB \u00e8 stato fondato dieci anni fa da Avi Kiviti e Dor Laor, che in passato hanno creato un hypervisor. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4420\">KVM<\/a> e il sistema operativo OSv. Il progetto \u00e8 stato creato nel tentativo di riscrivere Apache Cassandra dal linguaggio Java a C++ per ottenere prestazioni superiori. Il database \u00e8 compatibile a livello API con Apache Cassandra e Amazon DynamoDB. Nei test condotti, ScyllaDB mostra un incremento della capacit\u00e0 pari a 2-5 volte rispetto ad Apache Cassandra. Si segnala che un cluster basato su Apache Cassandra pu\u00f2 essere sostituito da un cluster ScyllaDB composto da 10 volte meno nodi, ma nonostante il numero ridotto di nodi, ScyllaDB supera le prestazioni del 42%.                      <\/p>\n<p>Per quanto riguarda gli altri prodotti dell'azienda ScyllaDB, il framework per lo sviluppo di applicazioni server asincrone Seastar, i driver e l'operatore Kubernetes continueranno a essere forniti con licenza Apache 2.0. La piattaforma di gestione del cluster Scylla Manager, precedentemente distribuita con licenza proprietaria, \u00e8 stata trasferita sotto licenza Apache 2.0. L'implementazione chiusa dell'operatore Kubernetes geograficamente distribuito \u00e8 stata unita all'operatore Kubernetes open source e sar\u00e0 fornita sotto licenza Apache 2.0.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62442\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0421\u0423\u0411\u0414 ScyllaDB \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0443\u044e \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044e, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0443\u044e \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f. \u0412\u0435\u0442\u043a\u0430 ScyllaDB 6.2.x \u0441\u0442\u0430\u043d\u0435\u0442 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0439, \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 AGPL. \u041f\u0440\u0438 \u0436\u0435\u043b\u0430\u043d\u0438\u0438 \u0437\u0430\u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043b\u0438\u0446\u0430 \u043c\u043e\u0433\u0443\u0442 \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u0444\u043e\u0440\u043a \u0438 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442\u044c \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u044b ScyllaDB \u043f\u043e\u0434 \u0441\u0442\u0430\u0440\u043e\u0439 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439. \u0420\u0430\u043d\u0435\u0435 \u043f\u0440\u043e\u0435\u043a\u0442 ScyllaDB \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u043b\u0441\u044f \u043c\u043e\u0434\u0435\u043b\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 Open Core, \u043f\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u0430\u0437\u043e\u0432\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439, [&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-121099","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0421\u0423\u0411\u0414 ScyllaDB \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0443\u044e \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044e, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0443\u044e 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licenza proprietaria | ProHoster","description":"Gli sviluppatori del database ScyllaDB hanno annunciato il passaggio del progetto a una licenza proprietaria che limita l'ambito di applicazione. La versione ScyllaDB 6.2.x sar\u00e0 l'ultima disponibile sotto licenza AGPL. Gli interessati possono creare un fork e continuare lo sviluppo del codice sorgente di ScyllaDB sotto la vecchia licenza. In precedenza, il progetto ScyllaDB seguiva un modello di sviluppo Open Core, in cui la parte base del prodotto \u00e8 sviluppata sotto una licenza libera,","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0421\u0423\u0411\u0414 ScyllaDB \u043f\u0435\u0440\u0435\u0448\u043b\u0430 \u0441 AGPL \u043d\u0430 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0443\u044e \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044e | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0421\u0423\u0411\u0414 ScyllaDB \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0443\u044e \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044e, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0443\u044e \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f. \u0412\u0435\u0442\u043a\u0430 ScyllaDB 6.2.x \u0441\u0442\u0430\u043d\u0435\u0442 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0439, \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 AGPL. \u041f\u0440\u0438 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