{"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\/cs\/blog\/news\/v-chrome-106-budet-prekrashhena-podderzhka-tehnologii-server-push","title":{"rendered":"V Chrome 106 bude ukon\u010dena podpora technologie Server Push","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spole\u010dnost Google varovala, \u017ee podpora technologie Server Push bude ukon\u010dena s vyd\u00e1n\u00edm Chromu 106, napl\u00e1novan\u00fdm na 27. z\u00e1\u0159\u00ed. Zm\u011bny se dotknou tak\u00e9 dal\u0161\u00edch prohl\u00ed\u017ee\u010d\u016f zalo\u017een\u00fdch na k\u00f3dov\u00e9 z\u00e1kladn\u011b Chromium. Technologie Server Push je definov\u00e1na ve standardech HTTP\/2 a HTTP\/3 a umo\u017e\u0148uje serveru pos\u00edlat zdroje klientovi, ani\u017e by \u010dekal na jejich explicitn\u00ed po\u017eadavek. P\u0159edpokl\u00e1d\u00e1 se, \u017ee t\u00edmto zp\u016fsobem m\u016f\u017ee server urychlit na\u010d\u00edt\u00e1n\u00ed str\u00e1nky, proto\u017ee pot\u0159ebn\u00e9 soubory pro vykreslen\u00ed str\u00e1nky, jako jsou CSS, skripty a obr\u00e1zky, budou b\u011bhem po\u017eadavku ji\u017e odesl\u00e1ny na stranu klienta. <\/p>\n

D\u016fvodem pro ukon\u010den\u00ed podpory je p\u0159\u00edli\u0161n\u00e1 slo\u017eitost implementace technologie, kdy\u017e existuj\u00ed jednodu\u0161\u0161\u00ed a stejn\u011b \u00fa\u010dinn\u00e9 alternativy, jako je tag , na z\u00e1klad\u011b kter\u00e9ho m\u016f\u017ee prohl\u00ed\u017ee\u010d po\u017e\u00e1dat o zdroj, ani\u017e by na n\u011bj \u010dekal na str\u00e1nce. Na jedn\u00e9 stran\u011b preload ve srovn\u00e1n\u00ed se Server Push vede k nadbyte\u010dn\u00e9 v\u00fdm\u011bn\u011b paket\u016f (RTT), na druh\u00e9 stran\u011b v\u0161ak umo\u017e\u0148uje vyhnout se odes\u00edl\u00e1n\u00ed zdroj\u016f, kter\u00e9 u\u017e jsou v prohl\u00ed\u017ee\u010dov\u00e9 cache. Celkov\u011b jsou rozd\u00edly v latenc\u00edch p\u0159i pou\u017e\u00edv\u00e1n\u00ed Server Push a preload hodnoceny jako zanedbateln\u00e9. <\/p>\n

Pro iniciaci p\u0159edb\u011b\u017en\u00e9ho na\u010d\u00edt\u00e1n\u00ed na stran\u011b serveru<\/a> se navrhuje pou\u017e\u00edt k\u00f3d HTTP odpov\u011bdi 103, kter\u00fd umo\u017e\u0148uje informovat klienta o obsahu n\u011bkter\u00fdch HTTP hlavi\u010dek ihned po po\u017eadavku, ani\u017e by se \u010dekalo, a\u017e server dokon\u010d\u00ed v\u0161echny \u010dinnosti souvisej\u00edc\u00ed s po\u017eadavkem a za\u010dne odes\u00edlat obsah. T\u00edmto zp\u016fsobem lze indikovat tipy o prvc\u00edch souvisej\u00edc\u00edch s odes\u00edlanou str\u00e1nkou, kter\u00e9 mohou b\u00fdt p\u0159edb\u011b\u017en\u011b na\u010dteny (nap\u0159. m\u016f\u017ee b\u00fdt uvedeno odkazy na pou\u017e\u00edvan\u00e9 CSS a JavaScript na str\u00e1nce). Z\u00edsk\u00e1n\u00edm informac\u00ed o takov\u00fdch zdroj\u00edch m\u016f\u017ee prohl\u00ed\u017ee\u010d za\u010d\u00edt jejich na\u010d\u00edt\u00e1n\u00ed, ani\u017e by \u010dekal na dokon\u010den\u00ed odesl\u00e1n\u00ed hlavn\u00ed str\u00e1nky, co\u017e pom\u00e1h\u00e1 zkr\u00e1tit celkov\u00fd \u010das zpracov\u00e1n\u00ed po\u017eadavku. <\/p>\n

Krom\u011b optimalizace na\u010d\u00edt\u00e1n\u00ed zdroj\u016f mechanismus Server Push<\/a> mohl b\u00fdt tak\u00e9 pou\u017eit pro streamov\u00e1n\u00ed dat ze serveru k klientovi, av\u0161ak pro tyto \u00fa\u010dely konsorcium W3C vyv\u00edj\u00ed protokol WebTransport. Komunika\u010dn\u00ed kan\u00e1l v WebTransport je organizov\u00e1n nad HTTP\/3 s vyu\u017eit\u00edm protokolu QUIC jako transportu. WebTransport nab\u00edz\u00ed roz\u0161\u00ed\u0159en\u00e9 mo\u017enosti, jako je organizace p\u0159enosu do n\u011bkolika proud\u016f, jednosm\u011brn\u00e9 proudy, doru\u010den\u00ed bez ohledu na po\u0159ad\u00ed odes\u00edl\u00e1n\u00ed paket\u016f (out-of-order), spolehliv\u00e9 a nespolehliv\u00e9 re\u017eimy doru\u010den\u00ed. <\/p>\n

Podle statistik Google technologie Server Push nez\u00edskala dostate\u010dn\u00e9 roz\u0161\u00ed\u0159en\u00ed. P\u0159esto\u017ee Server Push je sou\u010d\u00e1st\u00ed specifikace HTTP\/3, v praxi mnoh\u00e9 serverov\u00e9 a klientsk\u00e9 softwarov\u00e9 produkty, v\u010detn\u011b prohl\u00ed\u017ee\u010de Chrome, jej p\u016fvodn\u011b neimplementovaly. V roce 2021 pou\u017e\u00edvalo Server Push p\u0159ibli\u017en\u011b 1,25 % web\u016f funguj\u00edc\u00edch na HTTP\/2. V tomto roce se tento ukazatel sn\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 technologie Server Push bude v Chrome 106 ukon\u010dena | ProHoster","description":"Spole\u010dnost Google varovala o ukon\u010den\u00ed podpory technologie Server Push ve vyd\u00e1n\u00ed Chrome 106, napl\u00e1novan\u00e9m na 27. z\u00e1\u0159\u00ed. 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