{"id":104899,"date":"2022-08-20T09:36:39","date_gmt":"2022-08-20T07:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-chrome-106-budet-prekrashhena-podderzhka-tehnologii-server-push"},"modified":"2026-01-24T23:11:11","modified_gmt":"2026-01-24T21:11:11","slug":"v-chrome-106-budet-prekrashhena-podderzhka-tehnologii-server-push","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/v-chrome-106-budet-prekrashhena-podderzhka-tehnologii-server-push","title":{"rendered":"V Chrome 106 sa skon\u010d\u00ed podpora technol\u00f3gie Server Push","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spolo\u010dnos\u0165 Google upozornila na vypnutie podpory technol\u00f3gie Server Push vo vydan\u00ed Chrome 106, napl\u00e1novanom na 27. septembra. Zmeny sa dotkn\u00fa aj in\u00fdch prehliada\u010dov zalo\u017een\u00fdch na k\u00f3dovej z\u00e1kladni Chromium. Technol\u00f3gia Server Push je definovan\u00e1 v \u0161tandardoch HTTP\/2 a HTTP\/3 a umo\u017e\u0148uje serveru posla\u0165 zdroje klientovi bez \u010dakania na ich explicitn\u00fa po\u017eiadavku. Predpoklad\u00e1 sa, \u017ee t\u00fdmto sp\u00f4sobom m\u00f4\u017ee server ur\u00fdchli\u0165 na\u010d\u00edtanie str\u00e1nky, ke\u010f\u017ee potrebn\u00e9 s\u00fabory na vykreslenie str\u00e1nky, ako s\u00fa CSS, skripty a obr\u00e1zky, bud\u00fa u\u017e na jeho strane odoslan\u00e9 v momente, ke\u010f ich klient vy\u017eiada. <\/p>\n

Ako d\u00f4vod na ukon\u010denie podpory sa uv\u00e1dza zbyto\u010dn\u00e9 zlo\u017eenie implement\u00e1cie technol\u00f3gie, pri\u010dom existuj\u00fa jednoduch\u0161ie a rovnako efekt\u00edvne alternat\u00edvy, ako je tag , na z\u00e1klade ktor\u00e9ho m\u00f4\u017ee prehliada\u010d po\u017eiada\u0165 o zdroj, k\u00fdm na neho \u010dak\u00e1 na str\u00e1nke. Na jednej strane preload v porovnan\u00ed so Server Push vedie k zbyto\u010dnej v\u00fdmene paketov (RTT), ale na druhej strane umo\u017e\u0148uje vyhn\u00fa\u0165 sa odosielaniu zdrojov, ktor\u00e9 u\u017e s\u00fa v pam\u00e4ti prehliada\u010da. Celkovo sa rozdiely v oneskoreniach pri pou\u017e\u00edvan\u00ed Server Push a preload pova\u017euj\u00fa za nev\u00fdznamn\u00e9. <\/p>\n

Na iniciovanie predbe\u017en\u00e9ho na\u010d\u00edtania na strane servera<\/a> sa navrhuje pou\u017ei\u0165 k\u00f3d HTTP-odpovede 103, ktor\u00fd umo\u017e\u0148uje informova\u0165 klienta o obsahu niektor\u00fdch HTTP-z\u00e1hlav\u00ed hne\u010f po po\u017eiadavke, bez \u010dakania, k\u00fdm server vykon\u00e1 v\u0161etky oper\u00e1cie s\u00favisiace s po\u017eiadavkou a za\u010dne odovzd\u00e1va\u0165 obsah. Tak\u00fdmto sp\u00f4sobom je mo\u017en\u00e9 poskytn\u00fa\u0165 tipy o s\u00favisiacich prvkoch str\u00e1nky, ktor\u00e9 m\u00f4\u017eu by\u0165 predbe\u017ene na\u010d\u00edtan\u00e9 (napr\u00edklad m\u00f4\u017eu by\u0165 poskytnut\u00e9 odkazy na pou\u017e\u00edvan\u00e9 na str\u00e1nke CSS a JavaScript). Z\u00edskan\u00edm inform\u00e1ci\u00ed o tak\u00fdchto zdrojoch m\u00f4\u017ee prehliada\u010d za\u010da\u0165 ich na\u010d\u00edtanie, ani\u017e by \u010dakal na dokon\u010denie odovzd\u00e1vania hlavnej str\u00e1nky, \u010do umo\u017e\u0148uje skr\u00e1ti\u0165 celkov\u00fd \u010das spracovania po\u017eiadavky. <\/p>\n

Okrem optimaliz\u00e1cie na\u010d\u00edtania zdrojov mechanizmus Server Push<\/a> mohol by\u0165 tie\u017e pou\u017eit\u00fd na streamovanie d\u00e1t zo servera do klienta, no na tieto \u00fa\u010dely konsorcium W3C vyv\u00edja protokol WebTransport. Komunika\u010dn\u00fd kan\u00e1l v WebTransport je organizovan\u00fd nad HTTP\/3 s vyu\u017eit\u00edm protokolu QUIC ako transportu. WebTransport pon\u00faka roz\u0161\u00edren\u00e9 funkcie ako multistreaming, jednokamenn\u00e9 pr\u00fady, doru\u010dovanie bez oh\u013eadu na poradie zasielania paketov (out-of-order) a spo\u013eahliv\u00e9 a nespo\u013eahliv\u00e9 re\u017eimy doru\u010dovania. <\/p>\n

Pod\u013ea \u0161tatist\u00edk spolo\u010dnosti Google technol\u00f3gia Server Push nebola dostato\u010dne roz\u0161\u00edren\u00e1. Napriek tomu, \u017ee Server Push je s\u00fa\u010das\u0165ou \u0161pecifik\u00e1cie HTTP\/3, v praxi mnoh\u00e9 serverov\u00e9 a klientsk\u00e9 softv\u00e9rov\u00e9 produkty, vr\u00e1tane prehliada\u010da Chrome, ho p\u00f4vodne nezrealizovali. V roku 2021 pribli\u017ene 1,25% str\u00e1nok prev\u00e1dzkuj\u00facich HTTP\/2 vyu\u017e\u00edvalo Server Push. Tento rok sa tento ukazovate\u013e zn\u00ed\u017eil na 0,7%.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0430 \u043e\u0431 \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 Server Push \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 Chrome 106, \u043d\u0430\u043c\u0435\u0447\u0435\u043d\u043d\u043e\u043c \u043d\u0430 27 \u0441\u0435\u043d\u0442\u044f\u0431\u0440\u044f. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0442\u0430\u043a\u0436\u0435 \u0437\u0430\u0442\u0440\u043e\u043d\u0435\u0442 \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u044b, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043d\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u0435 Chromium. \u0422\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f Server Push \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0430 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430\u0445 HTTP\/2 \u0438 HTTP\/3, \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0441\u0435\u0440\u0432\u0435\u0440\u0443 \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0440\u0435\u0441\u0443\u0440\u0441\u044b \u043a\u043b\u0438\u0435\u043d\u0442\u0443, \u043d\u0435 \u0434\u043e\u0436\u0438\u0434\u0430\u044f\u0441\u044c \u0438\u0445 \u044f\u0432\u043d\u043e\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u041f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0441\u0435\u0440\u0432\u0435\u0440 \u043c\u043e\u0436\u0435\u0442 \u0443\u0441\u043a\u043e\u0440\u0438\u0442\u044c […]<\/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-104899","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\udd47Podpora technol\u00f3gie Server Push v Chrome 106 bude ukon\u010den\u00e1 | ProHoster","description":"Spolo\u010dnos\u0165 Google varovala pred odpojen\u00edm podpory technol\u00f3gie Server Push vo vydan\u00ed Chrome 106, ktor\u00e9 je napl\u00e1novan\u00e9 na 27. septembra. 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