{"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\/ro\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","title":{"rendered":"Baza de date ScyllaDB a trecut de la AGPL la o licen\u021b\u0103 proprietar\u0103","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dezvoltatorii bazei de date ScyllaDB au anun\u021bat tranzi\u021bia proiectului la o licen\u021b\u0103 proprietar\u0103, care restric\u021bioneaz\u0103 domeniul de aplicare. Ramura ScyllaDB 6.2.x va fi ultima disponibil\u0103 sub licen\u021ba AGPL. Dac\u0103 doresc, persoanele interesate pot crea un fork \u0219i pot continua dezvoltarea bazei de cod ScyllaDB sub vechea licen\u021b\u0103. <\/p>\n

Anterior, proiectul ScyllaDB a urmat un model de dezvoltare Open Core, \u00een care partea de baz\u0103 a produsului este dezvoltat\u0103 sub o licen\u021b\u0103 liber\u0103, iar func\u021bionalitatea extins\u0103 este \u00eenchis\u0103 \u0219i disponibile doar de\u021bin\u0103torilor de licen\u021be comerciale. \u00cen conformitate cu noua schem\u0103 de licen\u021biere, publicarea versiunii deschise ScyllaDB OSS va fi \u00eencheiat\u0103, iar produsul comercial \u00eenchis ScyllaDB Enterprise va \u00eencepe s\u0103 fie distribuit cu furnizarea codului surs\u0103 sub licen\u021b\u0103 proprietar\u0103. \u00cen loc de ScyllaDB OSS, utilizatorii vor putea folosi gratuit versiunea complet\u0103 ScyllaDB Enterprise, cu respectarea unor condi\u021bii. <\/p>\n

Noua licen\u021b\u0103 interzice utilizarea software-ului pentru a concura cu produsele \u0219i serviciile dezvoltatorilor ScyllaDB, precum \u0219i pentru crearea de sisteme de tip cloud \u201eaplica\u021bie ca serviciu\u201d (SaaS, software-as-a-service) \u0219i sisteme comerciale \u201eBaz\u0103 de date ca serviciu\u201d (dBaaS, database-as-a-service). Licen\u021ba nu limiteaz\u0103 utilizarea produsului gratuit \u00een scopuri comerciale \u0219i \u00een medii de lucru, dar cu condi\u021bia ca dimensiunea total\u0103 a stoc\u0103rii pe toate nodurile cluster-ului s\u0103 nu dep\u0103\u0219easc\u0103 10TB, iar pentru procesarea datelor s\u0103 nu fie utilizate mai mult de 50 VCPU. Utilizatorilor care nu se \u00eencadreaz\u0103 \u00een criteriile stabilite li se recomand\u0103 achizi\u021bionarea unei licen\u021be comerciale. <\/p>\n

De exemplu, se poate utiliza gratuit ScyllaDB pe un cluster format din trei noduri, fiecare nod av\u00e2nd 16 nuclee logice CPU \u0219i stocare pe disc de 3TB. O astfel de configura\u021bie este capabil\u0103 s\u0103 proceseze \u00eentre 100.000 \u0219i 200.000 de opera\u021biuni pe secund\u0103. Distribuirea ScyllaDB \u0219i modificarea codului sunt permise cu condi\u021bia s\u0103 fie livrate sub aceea\u0219i licen\u021b\u0103, enumer\u00e2nd \u00eentreaga list\u0103 a tuturor modific\u0103rilor \u0219i furniz\u00e2nd informa\u021bii despre autorul ini\u021bial al produsului. <\/p>\n

Motivul schimb\u0103rii politicii de distribu\u021bie a ScyllaDB a fost dorin\u021ba de a unifica \u0219i optimiza dezvoltarea variantelor comerciale \u0219i deschise, care concurau \u00eentre ele, men\u021binerea separat\u0103 a c\u0103rora crea dificult\u0103\u021bi, consuma mult\u0103 energie \u0219i resurse. De asemenea, din cauza complexit\u0103\u021bii arhitecturii interne, baza de cod a ScyllaDB a evoluat exclusiv cu ajutorul angaja\u021bilor companiei \u0219i proiectul deschis nu a reu\u0219it s\u0103 atrag\u0103 participan\u021bi externi care s\u0103 contribuie cu modific\u0103rile lor. Un moment de cotitur\u0103 a fost implementarea algoritmului de consens Raft, a tabelilor \u0219i a suportului \u00eencorporat pentru API S3, \u00een urma c\u0103reia multe func\u021bii secundare au fost mutate din aplica\u021bii externe \u00een structura principal\u0103 a SGBD-ului. <\/p>\n

\u00cen cele din urm\u0103, s-a decis combinarea produselor open-source cu cele comerciale, ceea ce, pe de o parte, va simplifica dezvoltarea, iar pe de alt\u0103 parte - va extinde capacit\u0103\u021bile versiunii gratuite. De exemplu, utilizatorii care se \u00eencadreaz\u0103 \u00een limitele gratuite vor avea acces la func\u021bionalit\u0103\u021bi precum suport LDAP, optimiz\u0103ri PGO (reducerea \u00eent\u00e2rzierilor \u00een texte cu 33% \u0219i cre\u0219terea performan\u021bei cu p\u00e2n\u0103 la 50%), modul de streaming la nivel de fi\u0219iere (accelerarea ad\u0103ug\u0103rii\/elimin\u0103rii nodurilor cu p\u00e2n\u0103 la 30 de ori), stabilirea propriilor priorit\u0103\u021bi pentru sarcini diferite, suport pentru compresia traficului RPC \u00eentre noduri cu ajutorul algoritmului ZSTD, \u00eembun\u0103t\u0103\u021birea strategiei de ambalare a datelor (reducerea dimensiunii stoc\u0103rii cu p\u00e2n\u0103 la 35%), suport pentru criptare, operator Kubernetes pentru ScyllaDB, ciclu de suport extins pentru lans\u0103ri. <\/p>\n

ScyllaDB permite crearea de sisteme noSQL distribuite, scalabile \u0219i tolerante la erori, care stocheaz\u0103 date sub form\u0103 de array-uri associative (hash-uri) cu mai multe niveluri de imbricare. Pentru interog\u0103rile structurate, se poate folosi un limbaj asem\u0103n\u0103tor cu SQL, numit CQL (Cassandra Query Language). Clusterele bazate pe ScyllaDB ofer\u0103 un nivel liniar de scalabilitate, \u00een care performan\u021ba depinde \u00een mod direct de num\u0103rul de nuclee de procesor. Datele introduse \u00een baza de date sunt replicate automat pe mai multe noduri, iar \u00een caz de defec\u021biune a unui nod, func\u021biile acestuia sunt preluate \u00een timp real de alte noduri. Ad\u0103ugarea, actualizarea \u0219i \u0219tergerea nodurilor din cluster se face f\u0103r\u0103 a opri activitatea \u0219i f\u0103r\u0103 a reconfigura alte noduri. <\/p>\n

Sistemul de gestionare a bazelor de date ScyllaDB a fost fondat acum zece ani de Avi Kiviti \u0219i Dor Laor, care la acea vreme au creat un hipervizor. KVM<\/a> Proiectul a fost ini\u021biat ca o \u00eencercare de a rescrie Apache Cassandra din Java \u00een C++ pentru a ob\u021bine o performan\u021b\u0103 mai bun\u0103. ScyllaDB este compatibil la nivel API cu Apache Cassandra \u0219i Amazon DynamoDB. Testele efectuate arat\u0103 c\u0103 ScyllaDB ofer\u0103 o cre\u0219tere a l\u0103\u021bimii de band\u0103 de 2-5 ori comparativ cu Apache Cassandra. Se observ\u0103 c\u0103 un cluster bazat pe Apache Cassandra poate fi \u00eenlocuit cu un cluster ScyllaDB care con\u021bine de 10 ori mai pu\u021bine noduri, dar, \u00een ciuda acestui lucru, dep\u0103\u0219e\u0219te cu 42% performan\u021ba. <\/p>\n

\u00cen ceea ce prive\u0219te celelalte produse ale companiei ScyllaDB, cadrul pentru dezvoltarea aplica\u021biilor server bazate pe asyncronism Seastar, driverele \u0219i operatorul Kubernetes vor continua s\u0103 fie furnizate sub licen\u021ba Apache 2.0. Platforma de gestionare a clusterelor Scylla Manager, care anterior era disponibil\u0103 sub licen\u021b\u0103 proprietar\u0103, a fost transferat\u0103 pe licen\u021ba Apache 2.0. Implementarea \u00eenchis\u0103 a operatorului Kubernetes distribuit regional a fost combinat\u0103 cu operatorul Kubernetes open-source \u0219i va fi furnizat\u0103 sub licen\u021ba Apache 2.0.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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, […]<\/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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Sistemul de gestionare a bazelor de date ScyllaDB a trecut de la AGPL la o licen\u021b\u0103 proprietar\u0103 | ProHoster","description":"Dezvoltatorii sistemului de gestionare a bazelor de date ScyllaDB au anun\u021bat trecerea proiectului la o licen\u021b\u0103 proprietar\u0103, care limiteaz\u0103 domeniul de aplicare. Ramura ScyllaDB 6.2.x va fi ultima disponibil\u0103 sub licen\u021ba AGPL.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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 | 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