{"id":101702,"date":"2021-10-19T22:23:37","date_gmt":"2021-10-19T20:23:37","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-servernoj-javascript-platformy-node-js-17-0"},"modified":"2021-10-19T22:23:37","modified_gmt":"2021-10-19T20:23:37","slug":"vypusk-servernoj-javascript-platformy-node-js-17-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-servernoj-javascript-platformy-node-js-17-0","title":{"rendered":"Node.js 17.0 serverip\u00f5hise JavaScript platvormi v\u00e4ljaanne","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ilmus Node.js 17.0, JavaScript-i v\u00f5rgurakenduste k\u00e4itamise platvorm. Node.js 17.0 kuulub tavap\u00e4rase toe harusse, mille uuendusi antakse v\u00e4lja kuni 2022. aasta juuni l\u00f5puni. J\u00e4rgmise n\u00e4dala jooksul viimistletakse Node.js 16 haru, mis omandab LTS staatuse ja mille tugi kestab kuni 2024. aasta aprillini. Eelmise LTS haru Node.js 14.0 tugi kestab kuni 2023. aasta aprillini, samas kui eelmist LTS haru 12.0 toetatakse kuni 2022. aasta aprillini.       <\/p>\n<p>Peamised parandused:  <\/p>\n<ul>\n<li class=\"l\"> V8 mootor on uuendatud versioonile 9.5.\n<li class=\"l\"> \u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432 \u0431\u0430\u0437\u043e\u0432\u043e\u0433\u043e API, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0445 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439 Promise. \u0412 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a \u0440\u0430\u043d\u0435\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u043c API Timers Promises \u0438 Streams Promises \u0432 Node.js 17.0 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d API Readline Promise \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0447\u043d\u043e\u0433\u043e \u0447\u0442\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043c\u043e\u0434\u0443\u043b\u044f readline.       import * as readline from &#8216;node:readline\/promises&#8217;;     import { stdin as input, stdout as output } from &#8216;process&#8217;;       const rl = readline.createInterface({ input, output });       const answer = await rl.question(&#8216;What do you think of Node.js?&#8217;);       console.log(&#8216;Thank you for your valuable feedback: ${answer}&#8217;);       rl.close();\n<li class=\"l\"> Kaasa arvatud OpenSSL raamatukogu on uuendatud versioonile 3.0 (kasutatakse quictls\/openssl fork'i, millel on sisse l\u00fclitatud QUIC protokolli tugi).\n<li class=\"l\"> Node.js versiooni v\u00e4ljund on tagatud kuhjatavate virnatrace'ide puhul, mis on loodud fataalsete vigade t\u00f5ttu, mis viivad rakenduse sulgemiseni.      <\/ul>\n<p>\u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u043d\u043e \u0443\u043f\u043e\u043c\u044f\u043d\u0443\u0442\u044c \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438 \u0432 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0432\u0435\u0442\u043a\u0430\u0445 Node.js \u0434\u0432\u0443\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 (CVE-2021-22959, CVE-2021-22960), \u0434\u0430\u044e\u0449\u0438\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 &#171;HTTP Request Smuggling&#187; (HRS), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432\u043a\u043b\u0438\u043d\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0432 \u0442\u043e\u043c \u0436\u0435 \u043f\u043e\u0442\u043e\u043a\u0435 \u043c\u0435\u0436\u0434\u0443 \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434\u043e\u043c \u0438 \u0431\u044d\u043a\u0435\u043d\u0434\u043e\u043c (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430 \u0432 \u0441\u0435\u0430\u043d\u0441 \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f). \u0414\u0435\u0442\u0430\u043b\u0438 \u0431\u0443\u0434\u0443\u0442 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u043f\u043e\u0437\u0434\u043d\u0435\u0435, \u0430 \u043f\u043e\u043a\u0430 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u043e, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432\u044b\u0437\u0432\u0430\u043d\u044b \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u043f\u0440\u043e\u0431\u0435\u043b\u043e\u0432 \u043c\u0435\u0436\u0434\u0443 \u0438\u043c\u0435\u043d\u0435\u043c HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430 \u0438 \u0434\u0432\u043e\u0435\u0442\u043e\u0447\u0438\u0435\u043c, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0440\u0430\u0437\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439  \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u043a\u0430\u0440\u0435\u0442\u043a\u0438 \u0438 \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0430 \u0441\u0442\u0440\u043e\u043a\u0438 \u0432 \u0431\u043b\u043e\u043a\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u043c \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0442\u0435\u043b\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u043f\u043e \u0447\u0430\u0441\u0442\u044f\u043c \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 &#171;chunked&#187;.        <\/p>\n<p>Tuletame meelde, et Node.js platvormi saab kasutada nii veebirakenduste serveripoolseks toetamiseks kui ka tavaliste kliendi- ja serveri v\u00f5rguprogrammide loomiseks. Node.js rakenduste funktsionaalsuse laiendamiseks on ette valmistatud suur moodulite kogu, milles leidub erinevaid teostuse mooduleid.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/\"   title=\"serverite\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1614\">serverite<\/a> Lisaks on saadaval moodulid erinevate veebiraamistikest integreerimiseks, WebSocketi ja Ajax t\u00f6\u00f6tlejate, andmebaasi \u00fchenduse moodulite (MySQL, PostgreSQL, SQLite, MongoDB), templaatide, CSS-mootorite, kr\u00fcptoalgoritmide ja autoriseerimiss\u00fcsteemide (OAuth), XML-parside rakendusteks.    <\/p>\n<p> Node.js kasutab paljude paralleelsete p\u00e4ringute t\u00f6\u00f6tlemiseks as\u00fcnkroonset koodik\u00e4itlusmudelit, mille aluseks on s\u00fcndmuste mittes\u00fcvendav t\u00f6\u00f6tlemine ja tagasikutsumiste m\u00e4\u00e4ramine. \u00dchenduste multiplexerimiseks toetatakse selliseid meetodeid nagu epoll, kqueue, \/dev\/poll ja select. \u00dchenduste multiplexerimiseks kasutatakse libuv raamatukogu, mis on Unix-s\u00fcsteemides libev ja Windowsis IOCP. T\u00f6\u00f6tajate basaari (thread pool) loomiseks kasutatakse libeio raamatukogu ning mittes\u00fcvendav DNS-p\u00e4ringute t\u00f6\u00f6tlemine on integreeritud c-ares'iga. K\u00f5ik s\u00fcsteemi kutsed, mis v\u00f5ivad blokeeruda, t\u00e4idetakse t\u00f6\u00f6tajate basaari sees ja seej\u00e4rel, nagu ka signaalide t\u00f6\u00f6tlejad, edastavad oma t\u00f6\u00f6 tulemuse tagasi anon\u00fc\u00fcmsesse torusse (pipe). JavaScripti koodi t\u00e4itmine tagatakse Google'i loodud V8 mootori kaasamise kaudu (t\u00e4psemalt arendab Microsoft Node.js varianti Chakra-Core mootoriga).        <\/p>\n<p>Node.js iseloom on sarnane Perl AnyEvent, Ruby Event Machine, Python Twisted raamistikele ning Tcl s\u00fcndmuste rakendusele, kuid Node.js s\u00fcndmustet\u00f6\u00f6tlemise ts\u00fckkel (event loop) on arendajalt peidetud ja meenutab veebirakenduses, mis t\u00f6\u00f6tab brauseris, s\u00fcndmuste t\u00f6\u00f6tlemist. Node.js rakenduste kirjutamisel tuleb arvestada s\u00fcndmustep\u00f5hise programmeerimise erip\u00e4ra, n\u00e4iteks: selle asemel, et t\u00e4ita &#171;var result = db.query(&#171;select..&#187;);&#187; ja oodata, kuni t\u00f6\u00f6tlemine on l\u00f5ppenud ning tulemusi t\u00f6\u00f6deldakse, kasutatakse Node.js-s as\u00fcnkroonset t\u00e4itmisprintsiipi, st kood muudetakse &#171;db.query(&#171;select..&#187;, function (result) {tulemuse t\u00f6\u00f6tlemine});&#187;, mille korral antakse juhtimine viivitamatult \u00fcle j\u00e4rgmisele koodile ja p\u00e4ringu tulemust t\u00f6\u00f6deldakse andmete saabumise ajal.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55997\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 17.0, \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. Node.js 17.0 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u0432\u0435\u0442\u043a\u0435 \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0438\u044e\u043d\u044f 2022 \u0433\u043e\u0434\u0430. \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 16, \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 2024 \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 14.0 [&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-101702","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 17.0, \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. 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