Ilmus Node.js 21.0, JavaScripti p\u00f5hineva v\u00f5rgurakenduste platvormi uus versioon. Node.js 21.0 haru toetamine kestab 6 kuud. J\u00e4rgmise paari p\u00e4eva jooksul l\u00f5petatakse Node.js 20 haru stabiliseerimine, mis saab LTS staatuse ning seda toetatakse kuni aprillini 2026. Eelmise LTS haru Node.js 18.0 toetamine kestab kuni septembrini 2025, ja eelmainitud LTS haru 16.0 kuni aprillini 2024. <\/p>\n
Peamised t\u00e4iustused: <\/p>\n
Node.js platvormi saab kasutada nii veebirakenduste serveripoolseks toe tagamiseks kui ka tavaliste klient-serveri v\u00f5rgurakenduste loomiseks. Node.js jaoks on v\u00e4lja t\u00f6\u00f6tatud suur moodulite kogumik, kust leiate mooduleid, mis h\u00f5lmavad serverid<\/a> HTTP, SMTP, XMPP, DNS, FTP, IMAP, POP3 kliente, mooduleid erinevate veebiraamistike integreerimiseks, WebSocket ja Ajax t\u00f6\u00f6tlejat, andmebaasi \u00fchendusi (MySQL, PostgreSQL, SQLite, MongoDB), malligeneraatorid, CSS-mootorid, kr\u00fcptoalgoritmide rakendused ja autentimiss\u00fcsteemid (OAuth), XML-parsereid. <\/p>\n Suurte paralleelsete p\u00e4ringute t\u00f6\u00f6tlemise tagamiseks kasutab Node.js as\u00fcnkroonset koodik\u00e4ivitamise mudelit, mis p\u00f5hineb mitteblokeerival s\u00fcndmust\u00f6\u00f6tlusel ja tagasiside t\u00f6\u00f6tlejate m\u00e4\u00e4ramisel. \u00dchenduste multiplexerimise meetoditeks on sellised meetodid nagu epoll, kqueue, \/dev\/poll ja select. \u00dchenduste multiplexerimiseks kasutatakse libuv teeki, mis on libevi peal Unix-s\u00fcsteemides ja IOCP peal Windowsis. T\u00f6\u00f6de v\u00f5rgu loomise jaoks kasutatakse libeio teeki, niisuguste mitteblokeerivate DNS-p\u00e4ringute t\u00f6\u00f6tlemiseks on integreeritud c-ares. K\u00f5ik s\u00fcsteemikutsed, mis p\u00f5hjustavad blokeerimist, toimuvad teede grupis ja edastavad seej\u00e4rel oma t\u00f6\u00f6 tulemuse tagasi anon\u00fc\u00fcmse kanali kaudu (pipe). JavaScripti koodi t\u00e4itmine toimub Google'i v\u00e4lja t\u00f6\u00f6tatud V8 mootori kaudu (Microsoft arendab lisaks versiooni Node.js Chakra-Core mootori kasutades). <\/p>\n Node.js on oma olemuselt sarnane Perl AnyEvent, Ruby Event Machine, Python Twisted ja Tcl'i s\u00fcndmuste rakendustega, kuid Node.js s\u00fcndmust\u00f6\u00f6tlus ts\u00fckkel on arendajalt varjatud ja meenutab s\u00fcndmuste t\u00f6\u00f6tlemist veebirakenduses, mis t\u00f6\u00f6tab brauseris. Node.js rakenduste kirjutamisel tuleb arvestada s\u00fcndmep\u00f5hise programmeerimise erip\u00e4ra; n\u00e4iteks, selle asemel et k\u00e4ivitada 'var result = db.query('select..');' oodates selle l\u00f5petamist ja seej\u00e4rel tulemuste t\u00f6\u00f6tlemist, kasutatakse Node.js-is as\u00fcnkroonse t\u00e4itmise p\u00f5him\u00f5tet, st koodi muudetakse kujule 'db.query('select..', function (result) {tulemuse t\u00f6\u00f6tlemine});', mille k\u00e4igus kaob juhtimine koheselt edasisele koodile ning p\u00e4ringu tulemus t\u00f6\u00f6deldakse andmete saabumise ajal. \u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 21.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 Node.js 21.0 \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0432 \u0442\u0435\u0447\u0435\u043d\u0438\u0435 6 \u043c\u0435\u0441\u044f\u0446\u0435\u0432. \u0412 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0438\u0435 \u0434\u043d\u0438 \u0431\u0443\u0434\u0435\u0442 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0432\u0435\u0442\u043a\u0438 Node.js 20, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u0441\u0442\u0430\u0442\u0443\u0441 LTS \u0438 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2026 \u0433\u043e\u0434\u0430. \u0421\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 Node.js 18.0 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0441\u0435\u043d\u0442\u044f\u0431\u0440\u044f 2025 \u0433\u043e\u0434\u0430, \u0430 \u043f\u043e\u0437\u0430\u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 […]<\/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-111020","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\udd47Saadaval serveripoolne JavaScripti platvorm Node.js 21.0 | ProHoster","description":"V\u00e4lja anti Node.js 21.0, mis on JavaScripti keeles v\u00f5rgurakenduste k\u00e4itamise platvorm. 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Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"