{"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\/it\/blog\/news\/v-chrome-106-budet-prekrashhena-podderzhka-tehnologii-server-push","title":{"rendered":"In Chrome 106 sar\u00e0 interrotta la supporto alla tecnologia Server Push","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>L'azienda Google ha avvertito della disattivazione del supporto alla tecnologia Server Push nella versione di Chrome 106, prevista per il 27 settembre. Le modifiche riguarderanno anche altri browser basati sul codice sorgente di Chromium. La tecnologia Server Push \u00e8 definita negli standard HTTP\/2 e HTTP\/3 e consente al server di inviare risorse al client senza attendere una richiesta esplicita. Si prefigge, in questo modo, di accelerare il caricamento della pagina, poich\u00e9 i file CSS, gli script e le immagini necessari per il rendering della pagina saranno gi\u00e0 stati trasmessi al client al momento della richiesta.     <\/p>\n<p>Come motivo della cessazione del supporto viene citata la complessit\u00e0 eccessiva nell'implementazione della tecnologia, nonostante ci siano alternative pi\u00f9 semplici e altrettanto efficaci, come il tag , grazie al quale il browser pu\u00f2 richiedere una risorsa senza aspettarne l'utilizzo nella pagina. Da un lato, preload comporta uno scambio di pacchetti eccessivo (RTT) rispetto al Server Push, ma dall'altro consente di evitare l'invio di risorse gi\u00e0 presenti nella cache del browser. In generale, le differenze nei ritardi tra Server Push e preload sono state considerate non significative.     <\/p>\n<p>Per avviare il caricamento predittivo dal lato <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3845\">server<\/a>  si propone di utilizzare il codice di risposta HTTP 103, che consente di informare il client sul contenuto di alcuni header HTTP immediatamente dopo la richiesta, senza attendere che il server completi tutte le operazioni legate alla richiesta e inizi a restituire il contenuto. In questo modo \u00e8 possibile fornire suggerimenti su elementi correlati alla pagina restituita, che possono essere precedentemente caricati (ad esempio, possono essere forniti riferimenti ai CSS e JavaScript utilizzati nella pagina). Ricevendo informazioni su tali risorse, il browser pu\u00f2 iniziare a caricarle senza attendere il completamento della restituzione della pagina principale, riducendo cos\u00ec il tempo totale di elaborazione della richiesta.       <\/p>\n<p>Oltre all'ottimizzazione del caricamento delle risorse, il meccanismo <a href=\"https:\/\/prohoster.info\/it\/server\/\"  data-wpil-monitor-id=\"15\">Server Push<\/a> poteva anche essere utilizzato per lo streaming dei dati dal server al client, ma a questo scopo il consorzio W3C sta sviluppando il protocollo WebTransport. Il canale di comunicazione in WebTransport \u00e8 organizzato sopra HTTP\/3 utilizzando il protocollo QUIC come trasporto. WebTransport offre funzionalit\u00e0 avanzate come la gestione della trasmissione su pi\u00f9 flussi, flussi unidirezionali, consegna senza tener conto dell'ordine di invio dei pacchetti (out-of-order), modalit\u00e0 di consegna affidabili e non affidabili.       <\/p>\n<p>Secondo le statistiche di Google, la tecnologia Server Push non ha ricevuto un'adeguata diffusione. Anche se Server Push \u00e8 presente nella specifica HTTP\/3, nella pratica molti prodotti software server e client, incluso il browser Chrome, inizialmente non l'hanno implementato. Nel 2021, circa il 1,25% dei siti web che utilizzavano HTTP\/2 ha fatto uso di Server Push. Quest'anno questa percentuale \u00e8 scesa allo 0,7%.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57656\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&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-104899","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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