{"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\/sk\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","title":{"rendered":"SDB ScyllaDB pre\u0161la z AGPL na propriet\u00e1rnu licenciu.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri datab\u00e1zov\u00e9ho syst\u00e9mu ScyllaDB ozn\u00e1mili prechod projektu na propriet\u00e1rnu licenci, ktor\u00e1 obmedzuje rozsah pou\u017eitia. Vetva ScyllaDB 6.2.x bude posledn\u00e1, ktor\u00e1 bude dostupn\u00e1 pod licenciou AGPL. Zainteresovan\u00e9 strany m\u00f4\u017eu vytvori\u0165 forke a pokra\u010dova\u0165 vo v\u00fdvoji z\u00e1kladne k\u00f3du ScyllaDB pod starou licenciou. <\/p>\n

Predt\u00fdm projekt ScyllaDB dodr\u017eiaval model otvoren\u00e9ho jadra, pri ktorom sa z\u00e1kladn\u00e1 \u010das\u0165 produktu vyv\u00edja pod vo\u013enou licenciou, zatia\u013e \u010do roz\u0161\u00edren\u00e1 funk\u010dnos\u0165 je uzavret\u00e1 a dod\u00e1va sa iba dr\u017eite\u013eom komer\u010dnej licencie. V s\u00falade s nov\u00fdm licen\u010dn\u00fdm sch\u00e9mou bude publik\u00e1cia otvorenej ed\u00edcie ScyllaDB OSS zastaven\u00e1 a predt\u00fdm uzavret\u00fd komer\u010dn\u00fd produkt ScyllaDB Enterprise za\u010dne by\u0165 \u0161\u00edren\u00fd s poskytnut\u00edm zdrojov\u00e9ho k\u00f3du pod propriet\u00e1rnou licenciou. Namiesto ScyllaDB OSS bud\u00fa pou\u017e\u00edvatelia m\u00f4c\u0165 bezplatne pou\u017e\u00edva\u0165 pln\u00fa verziu ScyllaDB Enterprise pri splnen\u00ed ur\u010dit\u00fdch podmienok. <\/p>\n

Nov\u00e1 licencia zakazuje pou\u017e\u00edvanie softv\u00e9ru na konkurenciu s produktmi a slu\u017ebami v\u00fdvoj\u00e1rov ScyllaDB, ako aj na vytv\u00e1ranie cloudov\u00fdch syst\u00e9mov \"aplik\u00e1cia ako slu\u017eba\" (SaaS, software-as-a-service) a komer\u010dn\u00fdch syst\u00e9mov \"DB ako slu\u017eba\" (dBaaS, database-as-a-service). Licencia neobmedzuje pou\u017e\u00edvanie bezplatn\u00e9ho produktu na komer\u010dn\u00e9 \u00fa\u010dely a v pracovn\u00fdch prostrediach, ale pod podmienkou, \u017ee celkov\u00e1 ve\u013ekos\u0165 \u00falo\u017eiska na v\u0161etk\u00fdch uzloch klastrov nepresiahne 10TB a na spracovanie \u00fadajov sa pou\u017eije maxim\u00e1lne 50 VCPU. Pou\u017e\u00edvate\u013eom, ktor\u00ed nesp\u013a\u0148aj\u00fa uveden\u00e9 krit\u00e9ri\u00e1, sa navrhuje zak\u00fapi\u0165 komer\u010dn\u00fa licenciu. <\/p>\n

Napr\u00edklad, bezplatne je mo\u017en\u00e9 pou\u017e\u00edva\u0165 ScyllaDB na klastri z troch uzlov, ak ka\u017ed\u00fd uzol obsahuje 16 logick\u00fdch jadier CPU a diskov\u00e9 \u00falo\u017eisko s ve\u013ekos\u0165ou 3 TB. Tak\u00e1to konfigur\u00e1cia je schopn\u00e1 spracov\u00e1va\u0165 100-200 tis\u00edc oper\u00e1ci\u00ed za sekundu. Distrib\u00facia ScyllaDB a zmeny v k\u00f3de s\u00fa povolen\u00e9, ak s\u00fa dod\u00e1van\u00e9 pod tou istou licenciou, so zoznamom v\u0161etk\u00fdch zmien a uveden\u00edm inform\u00e1ci\u00ed o p\u00f4vodnom autorovi produktu. <\/p>\n

D\u00f4vodom zmeny distribu\u010dnej politiky ScyllaDB bolo \u017eelanie zjednoti\u0165 a optimalizova\u0165 v\u00fdvoj konkuruj\u00facich si komer\u010dn\u00fdch a otvoren\u00fdch variantov, ktor\u00fdch oddelen\u00e1 \u00fadr\u017eba sp\u00f4sobovala komplik\u00e1cie, vy\u017eadovala ve\u013ea s\u00edl a spotrebov\u00e1vala zdroje. Pri tom, v d\u00f4sledku zlo\u017eitosti vn\u00fatornej architekt\u00fary, sa k\u00f3dov\u00e1 z\u00e1klad\u0148a ScyllaDB vyv\u00edjala v\u00fdlu\u010dne silami zamestnancov spolo\u010dnosti a otvoren\u00fd projekt tak dodnes nemal \u017eiadnych extern\u00fdch prispievate\u013eov, ktor\u00ed by odovzd\u00e1vali svoje zmeny. Prelomov\u00fdm momentom sa stala pr\u00e1ca na implement\u00e1cii algoritmu konsenzu Raft, tabuliek a vstavan\u00fa podporu API S3, v d\u00f4sledku ktorej mnoh\u00e9 pomocn\u00e9 funkcie boli prenesen\u00e9 z extern\u00fdch aplik\u00e1ci\u00ed do hlavn\u00e9ho syst\u00e9mu DBMS. <\/p>\n

Nakoniec sa rozhodlo zl\u00fa\u010di\u0165 otvoren\u00e9 a komer\u010dn\u00e9 produkty, \u010do na jednej strane zjednodu\u0161\u00ed v\u00fdvoj, a na druhej strane roz\u0161\u00edri mo\u017enosti bezplatnej verzie. Napr\u00edklad pou\u017e\u00edvatelia, ktor\u00ed sa zmestia do bezplatn\u00fdch limitov, dostan\u00fa pr\u00edstup k tak\u00fdmto mo\u017enostiam, ako je podpora LDAP, optimaliz\u00e1cia PGO (zn\u00ed\u017eenie latencie textov o 33% a zv\u00fd\u0161enie v\u00fdkonu o 50%), re\u017eim streamovania na \u00farovni s\u00faborov (ur\u00fdchlenie prid\u00e1vania\/odstra\u0148ovania uzlov a\u017e 30-kr\u00e1t), nastavenie vlastn\u00fdch prior\u00edt pre r\u00f4zne z\u00e1\u0165a\u017ee, podpora kompresie RPC-trafficu medzi uzlami pomocou algoritmu ZSTD, vylep\u0161en\u00e1 strat\u00e9gia balenia \u00fadajov (zn\u00ed\u017eenie ve\u013ekosti \u00falo\u017eiska o 35%), podpora \u0161ifrovania, Kubernetes-operator pre ScyllaDB a dlh\u00fd cyklus podpory vydan\u00ed. <\/p>\n

ScyllaDB umo\u017e\u0148uje vytv\u00e1ra\u0165 distribuovan\u00e9, \u0161k\u00e1lovate\u013en\u00e9 a odoln\u00e9 noSQL syst\u00e9my, ktor\u00e9 uchov\u00e1vaj\u00fa \u00fadaje vo forme asociat\u00edvnych pol\u00ed (hash), s viacer\u00fdmi \u00farov\u0148ami vnorenia. Na \u0161trukt\u00farovan\u00e9 dotazy sa m\u00f4\u017ee pou\u017ei\u0165 SQL-podobn\u00fd jazyk CQL (Cassandra Query Language). Klustre zalo\u017een\u00e9 na ScyllaDB zabezpe\u010duj\u00fa line\u00e1rnu \u00farove\u0148 \u0161k\u00e1lovate\u013enosti, pri ktorej je v\u00fdkon priamo z\u00e1visl\u00fd od po\u010dtu procesorov\u00fdch jadier. \u00dadaje umiestnen\u00e9 v DB sa automaticky replikuj\u00fa na nieko\u013ek\u00fdch uzloch a pri v\u00fdpadku uzla jeho funkcie sa okam\u017eite preberaj\u00fa in\u00fdmi uzlami. Prid\u00e1vanie, aktualiz\u00e1cia a odstra\u0148ovanie uzlov v klustri sa vykon\u00e1va bez zastavenia pr\u00e1ce a bez prekondigurovania ostatn\u00fdch uzlov. <\/p>\n

Syst\u00e9m spr\u00e1vy datab\u00e1z ScyllaDB bol zalo\u017een\u00fd pred desiatimi rokmi Avi Kivitim a Dorom Laorom, ktor\u00ed v minulosti vytvorili hyperv\u00edzora KVM<\/a> a opera\u010dn\u00fd syst\u00e9m OSv. Projekt bol vytvoren\u00fd ako pokus prepisu Apache Cassandra z jazyka Java na C++ s cie\u013eom dosiahnu\u0165 vy\u0161\u0161\u00ed v\u00fdkon. Syst\u00e9m spr\u00e1vy datab\u00e1z je kompatibiln\u00fd na \u00farovni API s Apache Cassandra a Amazon DynamoDB. V uskuto\u010dnen\u00fdch testoch ScyllaDB oproti Apache Cassandra preukazuje n\u00e1rast priepustnosti 2-5 kr\u00e1t. Uv\u00e1dza sa, \u017ee klaster na b\u00e1ze Apache Cassandra m\u00f4\u017ee by\u0165 nahraden\u00fd klastrom ScyllaDB, ktor\u00fd obsahuje 10-kr\u00e1t menej uzlov, ale napriek men\u0161iemu po\u010dtu uzlov prekon\u00e1va v\u00fdkon o 42%. <\/p>\n

Pokia\u013e ide o \u010fal\u0161ie produkty spolo\u010dnosti ScyllaDB, r\u00e1mec na v\u00fdvoj asynchr\u00f3nnych serverov\u00fdch aplik\u00e1ci\u00ed Seastar, ovl\u00e1da\u010de a oper\u00e1tor Kubernetes bud\u00fa na\u010falej dod\u00e1van\u00e9 pod licenciou Apache 2.0. Platforma na spr\u00e1vu klastera Scylla Manager, ktor\u00e1 bola predt\u00fdm distribuovan\u00e1 pod propriet\u00e1rnou licenciou, bola preveden\u00e1 na licenciu Apache 2.0. Uzavret\u00e1 implement\u00e1cia teritori\u00e1lne distribuovan\u00e9ho oper\u00e1tora Kubernetes bola zl\u00fa\u010den\u00e1 s otvoren\u00fdm oper\u00e1torom Kubernetes a bude dod\u00e1van\u00e1 pod licenciou 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 ScyllaDB pre\u0161iel z AGPL na propriet\u00e1rnu licenciu | ProHoster","description":"V\u00fdvoj\u00e1ri Syst\u00e9mu spr\u00e1vy datab\u00e1z ScyllaDB ozn\u00e1mili prevod projektu na propriet\u00e1rnu licenciu, ktor\u00e1 obmedzuje rozsah aplik\u00e1cie. Vetva ScyllaDB 6.2.x sa stane poslednou, ktor\u00e1 bude dostupn\u00e1 pod licenciou AGPL.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","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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