{"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\/cs\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","title":{"rendered":"DB ScyllaDB p\u0159e\u0161la z AGPL na propriet\u00e1rn\u00ed licenci","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i datab\u00e1zov\u00e9ho syst\u00e9mu ScyllaDB ozn\u00e1mili, \u017ee projekt p\u0159ech\u00e1z\u00ed na vlastn\u00ed licenci s omezenou oblast\u00ed pou\u017eit\u00ed. V\u011btev ScyllaDB 6.2.x bude posledn\u00ed dostupn\u00e1 pod licenc\u00ed AGPL. Z\u00e1jemci si mohou vytvo\u0159it fork a pokra\u010dovat ve v\u00fdvoji k\u00f3du ScyllaDB pod starou licenc\u00ed. <\/p>\n

D\u0159\u00edve projekt ScyllaDB dodr\u017eoval model v\u00fdvoje Open Core, kde z\u00e1kladn\u00ed \u010d\u00e1st produktu se vyv\u00edjela pod volnou licenc\u00ed, zat\u00edmco roz\u0161\u00ed\u0159en\u00e1 funkcionalita byla uzav\u0159ena a nab\u00edzena pouze dr\u017eitel\u016fm komer\u010dn\u00ed licence. Podle nov\u00e9 licen\u010dn\u00ed sch\u00e9my bude publikace otev\u0159en\u00e9 edice ScyllaDB OSS ukon\u010dena a d\u0159\u00edve uzav\u0159en\u00fd komer\u010dn\u00ed produkt ScyllaDB Enterprise za\u010dne b\u00fdt distribuov\u00e1n se zve\u0159ejn\u011bn\u00edm zdrojov\u00e9ho k\u00f3du pod vlastn\u00ed licenc\u00ed. M\u00edsto ScyllaDB OSS budou u\u017eivatel\u00e9 moci zdarma vyu\u017e\u00edvat plnou verzi ScyllaDB Enterprise za spln\u011bn\u00ed ur\u010dit\u00fdch podm\u00ednek. <\/p>\n

Nov\u00e1 licence zakazuje pou\u017e\u00edv\u00e1n\u00ed softwaru pro konkurenci s produkty a slu\u017ebami v\u00fdvoj\u00e1\u0159\u016f ScyllaDB, stejn\u011b jako pro vytv\u00e1\u0159en\u00ed cloudov\u00fdch syst\u00e9m\u016f \u201eaplikace jako slu\u017eba\u201c (SaaS, software-as-a-service) a komer\u010dn\u00edch syst\u00e9m\u016f \u201eDB jako slu\u017eba\u201c (dBaaS, database-as-a-service). Licence neomezuje pou\u017e\u00edv\u00e1n\u00ed bezplatn\u00e9ho produktu pro komer\u010dn\u00ed \u00fa\u010dely a v pracovn\u00edm prost\u0159ed\u00ed, ale s podm\u00ednkou, \u017ee celkov\u00e1 velikost \u00falo\u017ei\u0161t\u011b na v\u0161ech uzlech clustera nep\u0159ekro\u010d\u00ed 10 TB a pro zpracov\u00e1n\u00ed dat se nepou\u017eije v\u00edce ne\u017e 50 VCPU. U\u017eivatel\u00e9, kte\u0159\u00ed nespl\u0148uj\u00ed uveden\u00e1 krit\u00e9ria, jsou vyzv\u00e1ni, aby si zakoupili komer\u010dn\u00ed licenci. <\/p>\n

Nap\u0159\u00edklad je mo\u017en\u00e9 zdarma pou\u017e\u00edvat ScyllaDB na clustru ze t\u0159\u00ed uzl\u016f, pokud ka\u017ed\u00fd uzel obsahuje 16 logick\u00fdch jader CPU a diskov\u00e9 \u00falo\u017ei\u0161t\u011b o velikosti 3 TB. Takov\u00e1 konfigurace je schopna zpracov\u00e1vat 100-200 tis\u00edc operac\u00ed za sekundu. Roz\u0161i\u0159ov\u00e1n\u00ed ScyllaDB a prov\u00e1d\u011bn\u00ed zm\u011bn v k\u00f3du je povoleno za podm\u00ednky, \u017ee bude dod\u00e1v\u00e1n pod stejnou licenc\u00ed, bude uveden kompletn\u00ed seznam v\u0161ech zm\u011bn a informace o p\u016fvodn\u00edm autorovi produktu. <\/p>\n

D\u016fvodem zm\u011bny politiky distribuce ScyllaDB bylo p\u0159\u00e1n\u00ed sjednotit a optimalizovat v\u00fdvoj konkuren\u010dn\u00edch komer\u010dn\u00edch a open-source variant, jejich\u017e odd\u011blen\u00e1 podpora zp\u016fsobovala komplikace, vy\u017eadovala mnoho \u00fasil\u00ed a spot\u0159ebov\u00e1vala zdroje. V d\u016fsledku slo\u017eitosti vnit\u0159n\u00ed architektury se k\u00f3dov\u00e1 b\u00e1ze ScyllaDB vyv\u00edjela v\u00fdhradn\u011b silami zam\u011bstnanc\u016f spole\u010dnosti, p\u0159i\u010dem\u017e otev\u0159en\u00fd projekt nedok\u00e1zal z\u00edskat extern\u00ed \u00fa\u010dastn\u00edky, kte\u0159\u00ed by p\u0159en\u00e1\u0161eli sv\u00e9 zm\u011bny. Zlomov\u00fdm momentem se stala pr\u00e1ce na implementaci konsensu\u00e1ln\u00edho algoritmu Raft, tabulek a vestav\u011bn\u00e9 podpory API S3, v jej\u00edm\u017e d\u016fsledku se mnoho pomocn\u00fdch funkc\u00ed p\u0159esunulo z extern\u00edch aplikac\u00ed do hlavn\u00edho j\u00e1dra DBMS. <\/p>\n

Nakonec bylo rozhodnuto slou\u010dit open-source a komer\u010dn\u00ed produkty, co\u017e na jedn\u00e9 stran\u011b zjednodu\u0161\u00ed v\u00fdvoj, a na druh\u00e9 stran\u011b - roz\u0161\u00ed\u0159\u00ed mo\u017enosti bezplatn\u00e9 verze. Nap\u0159\u00edklad u\u017eivatel\u00e9, kte\u0159\u00ed se vejdou do bezplatn\u00fdch limit\u016f, z\u00edskaj\u00ed p\u0159\u00edstup k takov\u00fdm funkc\u00edm, jako je podpora LDAP, PGO optimalizace (sn\u00ed\u017een\u00ed latence text\u016f o 33 % a zv\u00fd\u0161en\u00ed v\u00fdkonu a\u017e o 50 %), re\u017eim streamov\u00e1n\u00ed na \u00farovni soubor\u016f (urychlen\u00ed p\u0159id\u00e1v\u00e1n\u00ed\/odstra\u0148ov\u00e1n\u00ed uzl\u016f a\u017e 30kr\u00e1t), mo\u017enost nastaven\u00ed vlastn\u00edch priorit pro r\u016fzn\u00e9 zat\u00ed\u017een\u00ed, podpora komprese RPC provozu mezi uzly pomoc\u00ed algoritmu ZSTD, vylep\u0161en\u00e1 strategie balen\u00ed dat (sn\u00ed\u017een\u00ed velikosti \u00falo\u017ei\u0161t\u011b a\u017e o 35 %), podpora \u0161ifrov\u00e1n\u00ed a Kubernetes oper\u00e1tor pro ScyllaDB, dlouh\u00e1 podpora verz\u00ed. <\/p>\n

ScyllaDB umo\u017e\u0148uje vytv\u00e1\u0159en\u00ed distribuovan\u00fdch, \u0161k\u00e1lovateln\u00fdch a odoln\u00fdch noSQL syst\u00e9m\u016f, kter\u00e9 ukl\u00e1daj\u00ed data ve form\u011b asociativn\u00edch pol\u00ed (hash\u016f) s n\u011bkolika \u00farovn\u011bmi vlo\u017een\u00ed. Pro strukturovan\u00e9 dotazy lze pou\u017e\u00edt SQL podobn\u00fd jazyk CQL (Cassandra Query Language). Klastery zalo\u017een\u00e9 na ScyllaDB poskytuj\u00ed line\u00e1rn\u00ed \u00farove\u0148 \u0161k\u00e1lovatelnosti, p\u0159i kter\u00e9 je v\u00fdkon p\u0159\u00edmo z\u00e1visl\u00fd na po\u010dtu procesorov\u00fdch jader. Data um\u00edst\u011bn\u00e1 v DB se automaticky replikuj\u00ed na n\u011bkolik uzl\u016f a p\u0159i selh\u00e1n\u00ed uzlu jeho funkce okam\u017eit\u011b p\u0159eb\u00edraj\u00ed jin\u00e9 uzly. P\u0159id\u00e1v\u00e1n\u00ed, aktualizace a odstra\u0148ov\u00e1n\u00ed uzl\u016f v klastru se prov\u00e1d\u00ed bez zastaven\u00ed provozu a bez p\u0159e-konfigurov\u00e1n\u00ed ostatn\u00edch uzl\u016f. <\/p>\n

Syst\u00e9m spr\u00e1vy datab\u00e1z\u00ed ScyllaDB byl zalo\u017een p\u0159ed deseti lety Avi Kivitim a Dorem Laorem, kte\u0159\u00ed d\u0159\u00edve vytvo\u0159ili hypervizor. KVM<\/a> a opera\u010dn\u00ed syst\u00e9m OSv. Projekt byl zalo\u017een jako pokus p\u0159epsat Apache Cassandra z jazyka Java do C++ za \u00fa\u010delem dosa\u017een\u00ed vy\u0161\u0161\u00ed v\u00fdkonnosti. Syst\u00e9m je kompatibiln\u00ed na \u00farovni API s Apache Cassandra a Amazon DynamoDB. Testy ukazuj\u00ed, \u017ee ScyllaDB m\u00e1 ve srovn\u00e1n\u00ed s Apache Cassandra a\u017e p\u011btin\u00e1sobnou propustnost. Je tak\u00e9 zaznamen\u00e1no, \u017ee cluster zalo\u017een\u00fd na Apache Cassandra lze nahradit clusterem ScyllaDB, kter\u00fd obsahuje desetkr\u00e1t m\u00e9n\u011b uzl\u016f, a p\u0159esto o 42 % p\u0159ekon\u00e1v\u00e1 v\u00fdkonem. <\/p>\n

Pokud jde o dal\u0161\u00ed produkty spole\u010dnosti ScyllaDB, framework pro v\u00fdvoj asynchronn\u00edch serverov\u00fdch aplikac\u00ed Seastar, ovlada\u010de a oper\u00e1tor Kubernetes budou i nad\u00e1le dod\u00e1v\u00e1ny pod licenc\u00ed Apache 2.0. Platforma pro spr\u00e1vu clusteru Scylla Manager, kter\u00e1 byla d\u0159\u00edve distribuov\u00e1na pod propriet\u00e1rn\u00ed licenc\u00ed, byla p\u0159evedena na licenci Apache 2.0. Uzav\u0159en\u00e1 implementace geograficky distribuovan\u00e9ho oper\u00e1tora Kubernetes se spojila s otev\u0159en\u00fdm oper\u00e1torem Kubernetes a bude dod\u00e1v\u00e1na pod licenc\u00ed Apache 2.0.
\n
Zdroj: opennet.ru<\/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\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\udd47Syst\u00e9m spr\u00e1vy datab\u00e1z\u00ed ScyllaDB p\u0159e\u0161el z AGPL na propriet\u00e1rn\u00ed licenci | ProHoster","description":"V\u00fdvoj\u00e1\u0159i syst\u00e9mu ScyllaDB ozn\u00e1mili p\u0159echod projektu na propriet\u00e1rn\u00ed licenci omezuj\u00edc\u00ed oblast pou\u017eit\u00ed. V\u011btev ScyllaDB 6.2.x se stane posledn\u00ed verz\u00ed dostupnou pod licenc\u00ed AGPL.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","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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