{"id":2142,"date":"2026-05-29T10:01:49","date_gmt":"2026-05-29T09:01:49","guid":{"rendered":"https:\/\/zaccararoberto.eu\/?p=2142"},"modified":"2026-06-05T08:55:44","modified_gmt":"2026-06-05T07:55:44","slug":"http-x-differences-post","status":"publish","type":"post","link":"https:\/\/zaccararoberto.eu\/index.php\/blog\/http-x-differences-post\/","title":{"rendered":"HTTP\/x – Differences"},"content":{"rendered":"\n
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\u2753 ## What is HTTP\/3?<\/p>\n\n\n\n

HTTP\/3 is the third major version of the H<\/strong>yperT<\/strong>ext T<\/strong>ransfer P<\/strong>rotocol. It uses the UDP (QUIC) transport protocol instead of TCP, providing faster connection setup and improved performance over HTTP\/2.<\/p>\n\n\n\n

\ud83d\udd0d HTTP\/1 – HTTP\/2 – HTTP\/3 \u2014 Key Differences<\/p>\n\n\n\n

## What\u2019s the difference between HTTP\/1, HTTP\/2, and HTTP\/3?<\/p>\n\n\n\n

\ud83e\udde0HTTP\/1.1<\/strong>, HTTP\/2<\/strong>, and HTTP\/3<\/strong> are successive versions of the Hypertext Transfer Protocol used to transfer data on the web:<\/p>\n\n\n\n

    \n
  1. HTTP\/1.1<\/strong> is the original text-based protocol that opens a new connection for each request, causing inefficiencies and higher latency. <\/li>\n\n\n\n
  2. HTTP\/2<\/strong> improves performance with multiplexing<\/strong> (multiple requests on one connection), header compression<\/strong>, and server push<\/strong>, all over TCP. <\/li>\n\n\n\n
  3. HTTP\/3<\/strong> is the latest version and replaces TCP with QUIC<\/strong>, a UDP-based transport that reduces connection setup time<\/strong>, eliminates head-of-line blocking<\/strong>, and improves performance on unreliable network<\/li>\n<\/ol>\n\n\n\n
    Feature<\/th>HTTP\/1.1<\/th>HTTP\/2<\/th>HTTP\/3<\/th><\/tr><\/thead>
    Transport Protocol<\/td>TCP<\/td>TCP<\/td>QUIC (UDP)<\/td><\/tr>
    Multiplexing<\/td>\u274c<\/td>\u2705<\/td>\u2705<\/td><\/tr>
    Head-of-Line Blocking<\/td>Yes<\/td>Yes (TCP)<\/td>No<\/td><\/tr>
    Header Compression<\/td>\u274c<\/td>Yes<\/td>Yes<\/td><\/tr>
    Connection Setup<\/td>Slow<\/td>Moderate<\/td>Fast<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \u2705Summary:<\/strong> HTTP\/1.1 is simple but slow, HTTP\/2 accelerates modern web performance by reusing connections and compressing headers, and HTTP\/3 goes further by using QUIC to improve speed, reliability, and connection recovery, especially on mobile and lossy networks.<\/p>\n<\/div>\n<\/div>\n\n\n\n

    <\/div>\n\n\n\n
    \"\"<\/figure>
    \n

    \ud83e\uddeaHTTP\/3 A cosa \u00e8 dovuto l’incremento delle prestazioni?<\/strong><\/p>\n\n\n\n

    HTTP\/3 offre le stesse funzionalit\u00e0 delle versioni precedenti, le differenza di velocit\u00e0 deriva da come i messaggi HTTP vengono confezionati e trasportati attraverso Internet \u2014 dal ‘come’ piuttosto che dal ‘cosa’. HTTP\/1 e HTTP\/2 si basano sul protocollo TCP per il trasporto mentre HTTP\/3 utilizza il pi\u00f9 recente protocollo QUIC, che affronta la trasmissione dei dati in modo fondamentalmente diverso. L’obiettivo di questo cambiamento \u00e8 rendere le funzionalit\u00e0 di HTTP pi\u00f9 efficienti e accelerare la comunicazione di rete (cosa che a volte avviene e a volte no in condizioni reali).<\/p>\n<\/div><\/div>\n\n\n\n

    <\/div>\n\n\n\n
    \n

    \ud83d\udccc<\/strong> I principali vantaggi di prestazioni web di HTTP\/3 rispetto alle versioni precedenti sono i seguenti:<\/strong><\/p>\n\n\n\n

    L’ impostazione della connessione pi\u00f9 veloce:
    HTTP\/2 richiede handshake separati per il trasporto e l’autenticazione, il che di solito richiede 2-3 round trip tra server e browser prima che possano essere inviati dati reali. HTTP\/3 combina questi elementi in un unico handshake, riducendo l’instaurazione della connessione a un solo giro di andata e ritorno. Inoltre, per i visitatori di ritorno, HTTP\/3 dispone della ripresa 0-RTT (tempo di andata e ritorno zero), il che significa che le richieste possono essere inviate immediatamente senza alcun ritardo dovuto all’handshake.<\/p>\n<\/div>

    \"\"<\/figure><\/div>\n\n\n\n
    <\/div>\n\n\n\n

    \ud83d\udd0e\u2728\ud83e\udde0\ud83d\udccc\u2b50\ud83d\uded2\ud83e\uddd1\u27531\ufe0f\u20e3 2\ufe0f\u20e33\ufe0f\u20e34\ufe0f\u20e3\ud83d\udc4d\u2705\ud83d\udc64\ud83e\udded\ud83e\uddea\u27a1\ufe0f\u2714 \ud83d\ude0a\ud83d\udd25\ud83d\ude80\ud83c\udfaf\u26a0\ufe0f\ud83d\ude97\ud83c\udfcd\ufe0f\ud83d\ude9a\ud83e\udd9c\ud83e\uddbf\ud83d\udedd\ud83e\udde9\ud83c\udf2c\ufe0f\ud83d\udca1\ud83d\udee0\ufe0f\ud83d\udcac\ud83d\udd04\ufe0f\ud83c\udf7e\ud83d\udc49<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u2753 ## What is HTTP\/3? HTTP\/3 is the third major version of the HyperText Transfer Protocol. It uses the UDP (QUIC) transport protocol instead of TCP, providing faster connection setup and improved performance over HTTP\/2. \ud83d\udd0d HTTP\/1 – HTTP\/2 – HTTP\/3 \u2014 Key Differences ## What\u2019s the difference between HTTP\/1, HTTP\/2, and HTTP\/3? \ud83e\udde0HTTP\/1.1, HTTP\/2, and HTTP\/3 are […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[31],"tags":[],"class_list":["post-2142","post","type-post","status-publish","format-standard","hentry","category-wordpress"],"_links":{"self":[{"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/posts\/2142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/comments?post=2142"}],"version-history":[{"count":30,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/posts\/2142\/revisions"}],"predecessor-version":[{"id":2258,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/posts\/2142\/revisions\/2258"}],"wp:attachment":[{"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/media?parent=2142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/categories?post=2142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zaccararoberto.eu\/index.php\/wp-json\/wp\/v2\/tags?post=2142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}