{"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\/hu\/blog\/news\/subd-scylladb-pereshla-s-agpl-na-proprietarnuyu-liczenziyu","title":{"rendered":"A ScyllaDB \u00e1tl\u00e9pett az AGPL licencr\u0151l egy szabadalmaztatott licencre.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A ScyllaDB adatb\u00e1zis-kezel\u0151 rendszer fejleszt\u0151i bejelentett\u00e9k, hogy a projektet szabadalmaztatott licencre v\u00e1ltj\u00e1k, amely korl\u00e1tozza a felhaszn\u00e1l\u00e1s k\u00f6r\u00e9t. A ScyllaDB 6.2.x \u00e1ga lesz az utols\u00f3, amely AGPL licenc alatt \u00e9rhet\u0151 el. Az \u00e9rdekl\u0151d\u0151k, ha szeretn\u00e9k, l\u00e9trehozhatj\u00e1k a forkot, \u00e9s folytathatj\u00e1k a ScyllaDB k\u00f3dalapj\u00e1nak fejleszt\u00e9s\u00e9t a r\u00e9gi licenc alatt.    <\/p>\n<p>Kor\u00e1bban a ScyllaDB projekt az Open Core fejleszt\u00e9si modellt k\u00f6vette, amely szerint a term\u00e9k alapvet\u0151 r\u00e9sze szabad licenc alatt fejl\u0151dik, m\u00edg a kib\u0151v\u00edtett funkcionalit\u00e1s z\u00e1rt \u00e9s csak a kereskedelmi licenccel rendelkez\u0151 felhaszn\u00e1l\u00f3k sz\u00e1m\u00e1ra el\u00e9rhet\u0151. Az \u00faj licencel\u00e9si rend alapj\u00e1n a ScyllaDB OSS ny\u00edlt kiad\u00e1s\u00e1nak k\u00f6zz\u00e9t\u00e9tele megsz\u0171nik, m\u00edg a kor\u00e1bban z\u00e1rt kereskedelmi term\u00e9k, a ScyllaDB Enterprise, forr\u00e1sk\u00f3dja szabadalmaztatott licenc alatt kezd el terjedni. A ScyllaDB OSS helyett a felhaszn\u00e1l\u00f3k ingyenesen haszn\u00e1lhatj\u00e1k a ScyllaDB Enterprise teljes verzi\u00f3j\u00e1t, ha bizonyos felt\u00e9telek teljes\u00fclnek.    <\/p>\n<p>Az \u00faj licenc megtiltja a szoftver haszn\u00e1lat\u00e1t, ha az a ScyllaDB fejleszt\u0151inek term\u00e9keivel \u00e9s szolg\u00e1ltat\u00e1saival val\u00f3 versenyz\u00e9sre, valamint felh\u0151alap\u00fa rendszerek l\u00e9trehoz\u00e1s\u00e1ra ir\u00e1nyul, mint p\u00e9ld\u00e1ul az 'alkalmaz\u00e1s mint szolg\u00e1ltat\u00e1s' (SaaS, software-as-a-service) \u00e9s a kereskedelmi 'adatb\u00e1zis mint szolg\u00e1ltat\u00e1s' (dBaaS, database-as-a-service). A licenc nem korl\u00e1tozza a d\u00edjmentes term\u00e9k kereskedelmi c\u00e9l\u00fa haszn\u00e1lat\u00e1t \u00e9s a munkak\u00f6rnyezetekben val\u00f3 alkalmaz\u00e1s\u00e1t, felt\u00e9ve, hogy a klaszter \u00f6sszes csom\u00f3pontj\u00e1n a t\u00e1rol\u00f3 \u00f6sszm\u00e9rete nem haladja meg a 10 TB-ot, \u00e9s az adatok feldolgoz\u00e1s\u00e1hoz legfeljebb 50 VCPU-t haszn\u00e1lnak. Azoknak a felhaszn\u00e1l\u00f3knak, akik nem felelnek meg a megadott krit\u00e9riumoknak, javasoljuk, hogy v\u00e1s\u00e1roljanak kereskedelmi licencet.    <\/p>\n<p>P\u00e9ld\u00e1ul ingyenesen haszn\u00e1lhat\u00f3 a ScyllaDB egy h\u00e1rom csom\u00f3pont\u00fa klaszteren, ha minden csom\u00f3pont 16 logikai CPU magot \u00e9s 3TB m\u00e9ret\u0171 diszk t\u00e1rol\u00f3t tartalmaz. Ez a konfigur\u00e1ci\u00f3 100-200 ezer m\u0171veletet tud m\u00e1sodpercenk\u00e9nt kezelni. A ScyllaDB terjeszt\u00e9se \u00e9s a k\u00f3d m\u00f3dos\u00edt\u00e1sa enged\u00e9lyezett, ha a term\u00e9ket ugyanazt a licencet k\u00f6vetve adj\u00e1k \u00e1t, teljes list\u00e1t adva minden m\u00f3dos\u00edt\u00e1sr\u00f3l \u00e9s a term\u00e9k eredeti szerz\u0151j\u00e9nek megjel\u00f6l\u00e9s\u00e9vel.     <\/p>\n<p>A terjeszt\u00e9si politika megv\u00e1ltoztat\u00e1s\u00e1nak oka a ScyllaDB-n\u00e9l az volt, hogy egys\u00e9ges\u00edteni \u00e9s optimaliz\u00e1lni kell a verseng\u0151 kereskedelmi \u00e9s ny\u00edlt forr\u00e1sk\u00f3d\u00fa v\u00e1ltozatok fejleszt\u00e9s\u00e9t. Ezek k\u00fcl\u00f6n\u00e1ll\u00f3 fenntart\u00e1sa bonyodalmakat okozott, sok energi\u00e1t elvont, \u00e9s er\u0151forr\u00e1sokat haszn\u00e1lt fel. Ezen k\u00edv\u00fcl, a bels\u0151 architekt\u00fara bonyolults\u00e1ga miatt a ScyllaDB k\u00f3dalapja kiz\u00e1r\u00f3lag a c\u00e9g alkalmazottainak munk\u00e1j\u00e1val fejl\u0151d\u00f6tt, \u00e9s a ny\u00edlt projektben sosem jelentkeztek k\u00fcls\u0151 r\u00e9sztvev\u0151k, akik a saj\u00e1t m\u00f3dos\u00edt\u00e1saikat \u00e1tadt\u00e1k volna. A fordul\u00f3pontot a Raft konszenzusalgoritmus, a t\u00e1bl\u00e1k \u00e9s az S3 API be\u00e9p\u00edtett t\u00e1mogat\u00e1s\u00e1nak megval\u00f3s\u00edt\u00e1s\u00e1ra ir\u00e1nyul\u00f3 munka jelentette, amelynek eredm\u00e9nyek\u00e9nt sok seg\u00e9dfunkci\u00f3t \u00e1tvittek a k\u00fcls\u0151 alkalmaz\u00e1sokb\u00f3l az adatb\u00e1zis f\u0151 \u00f6sszetev\u0151ibe.     <\/p>\n<p>V\u00e9g\u00fcl \u00fagy d\u00f6nt\u00f6ttek, hogy \u00f6tv\u00f6zik a ny\u00edlt \u00e9s kereskedelmi term\u00e9keket, ami egyr\u00e9szt egyszer\u0171s\u00edti a fejleszt\u00e9st, m\u00e1sr\u00e9szt pedig b\u0151v\u00edti a d\u00edjmentes verzi\u00f3 lehet\u0151s\u00e9geit. P\u00e9ld\u00e1ul azok a felhaszn\u00e1l\u00f3k, akik belef\u00e9rnek a d\u00edjmentes keretekbe, hozz\u00e1f\u00e9r\u00e9st kapnak olyan lehet\u0151s\u00e9gekhez, mint az LDAP t\u00e1mogat\u00e1s, PGO-optimaliz\u00e1l\u00e1s (a k\u00e9sleked\u00e9sek cs\u00f6kkent\u00e9se 33%-kal \u00e9s a teljes\u00edtm\u00e9ny n\u00f6vel\u00e9se 50%-kal), f\u00e1jl szint\u0171 streaming \u00fczemm\u00f3d (a csom\u00f3pontok hozz\u00e1ad\u00e1s\u00e1nak\/t\u00f6rl\u00e9s\u00e9nek felgyors\u00edt\u00e1sa ak\u00e1r 30-szor), saj\u00e1t priorit\u00e1sok be\u00e1ll\u00edt\u00e1sa a k\u00fcl\u00f6nb\u00f6z\u0151 terhel\u00e9sekhez, az RPC-forgalom t\u00f6m\u00f6r\u00edt\u00e9s\u00e9nek t\u00e1mogat\u00e1sa a csom\u00f3pontok k\u00f6z\u00f6tt ZSTD algoritmus seg\u00edts\u00e9g\u00e9vel, jav\u00edtott adatcsomagol\u00e1si strat\u00e9gia (a t\u00e1rol\u00e1si m\u00e9ret cs\u00f6kkent\u00e9se 35%-kal), titkos\u00edt\u00e1si t\u00e1mogat\u00e1s, Kubernetes oper\u00e1tor a ScyllaDB-hez, hossz\u00fa t\u00e1v\u00fa t\u00e1mogat\u00e1s a kiad\u00e1sokhoz.                    <\/p>\n<p>A ScyllaDB lehet\u0151v\u00e9 teszi a elosztott, sk\u00e1l\u00e1zhat\u00f3 \u00e9s hibat\u0171r\u0151 noSQL rendszerek l\u00e9trehoz\u00e1s\u00e1t, amelyek adatait asszoci\u00e1ci\u00f3s t\u00f6mb\u00f6k (hash) form\u00e1j\u00e1ban t\u00e1rolj\u00e1k, t\u00f6bb szint\u0171 be\u00e1gyaz\u00e1ssal. Struktur\u00e1lt lek\u00e9rdez\u00e9sekhez SQL-szer\u0171 CQL (Cassandra Query Language) nyelvet lehet haszn\u00e1lni. A ScyllaDB alap\u00fa klaszterek line\u00e1ris sk\u00e1l\u00e1zhat\u00f3s\u00e1got biztos\u00edtanak, ahol a teljes\u00edtm\u00e9ny k\u00f6zvetlen\u00fcl f\u00fcgg a processzormagok sz\u00e1m\u00e1t\u00f3l. Az adatb\u00e1zisba helyezett adatok automatikusan t\u00f6bb csom\u00f3pont k\u00f6z\u00f6tt replik\u00e1l\u00f3dnak, \u00e9s ha egy csom\u00f3pont meghib\u00e1sodik, annak funkci\u00f3it m\u00e1s csom\u00f3pontok \u00e1tv\u00e1llalj\u00e1k. A klaszterben a csom\u00f3pontok hozz\u00e1ad\u00e1sa, friss\u00edt\u00e9se \u00e9s t\u00f6rl\u00e9se meg\u00e1ll\u00e1s n\u00e9lk\u00fcl \u00e9s an\u00e9lk\u00fcl t\u00f6rt\u00e9nik, hogy m\u00e1s csom\u00f3pontokat \u00fajra konfigur\u00e1ln\u00e1nak.        <\/p>\n<p>A ScyllaDB adatb\u00e1zis-kezel\u0151 rendszert Avi Kiviti \u00e9s Dor Laor alap\u00edtotta t\u00edz \u00e9ve, akik egy hipervizort \u00e9s az OSv oper\u00e1ci\u00f3s rendszert is l\u00e9trehozt\u00e1k. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4420\">KVM<\/a> A projekt c\u00e9lja az volt, hogy az Apache Cassandra-t Java nyelvr\u0151l C++ nyelvre \u00edrj\u00e1k \u00e1t, hogy magasabb teljes\u00edtm\u00e9nyt \u00e9rjenek el. Az adatb\u00e1zis API szinten kompatibilis az Apache Cassandra-val \u00e9s az Amazon DynamoDB-vel. A v\u00e9gzett tesztek alapj\u00e1n a ScyllaDB az Apache Cassandra-hoz k\u00e9pest 2-5-sz\u00f6r\u00f6s teljes\u00edtm\u00e9nyn\u00f6veked\u00e9st mutat. Megjegyzik, hogy egy Apache Cassandra klasztert ki lehet cser\u00e9lni egy ScyllaDB klaszterre, amely 10-szer kevesebb csom\u00f3pontot tartalmaz, de a kevesebb csom\u00f3pont ellen\u00e9re 42%-kal jobban teljes\u00edt.                      <\/p>\n<p>A ScyllaDB tov\u00e1bbi term\u00e9keivel kapcsolatban a Seastar aszinkron szerveralkalmaz\u00e1s-fejleszt\u00e9si keretrendszer, a Kubernetes meghajt\u00f3k \u00e9s \u00fczemeltet\u0151 tov\u00e1bbra is Apache 2.0 licenc alatt ker\u00fclnek forgalomba. A Scylla Manager klaszterkezel\u0151 platform, amelyet kor\u00e1bban saj\u00e1t licenc alatt forgalmaztak, \u00e1tker\u00fclt az Apache 2.0 licenc al\u00e1. A ter\u00fcleti eloszt\u00e1s\u00fa Kubernetes \u00fczemeltet\u0151 z\u00e1rt megval\u00f3s\u00edt\u00e1sa egyes\u00fcl a ny\u00edlt Kubernetes \u00fczemeltet\u0151vel, \u00e9s Apache 2.0 licenc alatt ker\u00fcl forgalomba.<br \/>\n<br \/>Forr\u00e1s: <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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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