{"id":38671,"date":"2026-01-25T14:31:32","date_gmt":"2026-01-25T07:31:32","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=38671"},"modified":"2026-01-28T14:31:54","modified_gmt":"2026-01-28T07:31:54","slug":"ttfb-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/","title":{"rendered":"TTFB l\u00e0 g\u00ec? C\u00e1ch ki\u1ec3m tra, t\u1ed1i \u01b0u Time To First Byte chu\u1ea9n Google"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#TTFB-la-gi\" >TTFB l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Tai-sao-TTFB-lai-quan-trong-doi-voi-SEO-va-Website\" >T\u1ea1i sao TTFB l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi SEO v\u00e0 Website?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Anh-huong-truc-tiep-den-toc-do-tai-trang-tong-the\" >\u1ea2nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i trang t\u1ed5ng th\u1ec3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Tac-dong-gian-tiep-den-thu-hang-SEO\" >T\u00e1c \u0111\u1ed9ng gi\u00e1n ti\u1ebfp \u0111\u1ebfn th\u1ee9 h\u1ea1ng SEO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Lien-quan-chat-che-den-Core-Web-Vitals\" >Li\u00ean quan ch\u1eb7t ch\u1ebd \u0111\u1ebfn Core Web Vitals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Phan-anh-chat-luong-ha-tang-server-va-hosting\" >Ph\u1ea3n \u00e1nh ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1 t\u1ea7ng server v\u00e0 hosting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Anh-huong-den-ty-le-chuyen-doi-va-hieu-qua-kinh-doanh\" >\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i v\u00e0 hi\u1ec7u qu\u1ea3 kinh doanh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Khi-nao-ban-nen-dac-biet-quan-tam-den-TTFB\" >Khi n\u00e0o b\u1ea1n n\u00ean \u0111\u1eb7c bi\u1ec7t quan t\u00e2m \u0111\u1ebfn TTFB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#TTFB-bao-nhieu-la-tot-Tieu-chuan-danh-gia-tu-Google\" >TTFB bao nhi\u00eau l\u00e0 t\u1ed1t? Ti\u00eau chu\u1ea9n \u0111\u00e1nh gi\u00e1 t\u1eeb Google<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Nguyen-nhan-pho-bien-khien-chi-so-TTFB-cao\" >Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn khi\u1ebfn ch\u1ec9 s\u1ed1 TTFB cao<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Cach-kiem-tra-va-toi-uu-Time-To-First-Byte-TTFB-cho-website\" >C\u00e1ch ki\u1ec3m tra v\u00e0 t\u1ed1i \u01b0u Time To First Byte (TTFB) cho website<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Cach-do-Time-To-First-Byte-TTFB-chinh-xac\" >C\u00e1ch \u0111o Time To First Byte (TTFB) ch\u00ednh x\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Kiem-tra-TTFB-website-voi-KeyCDN\" >Ki\u1ec3m tra TTFB website v\u1edbi KeyCDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Kiem-tra-TTFB-bang-SpeedVitals\" >Ki\u1ec3m tra TTFB b\u1eb1ng SpeedVitals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Do-TTFB-voi-cong-cu-FlyingTTFB\" >\u0110o TTFB v\u1edbi c\u00f4ng c\u1ee5 FlyingTTFB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Do-TTFB-bang-Google-Chrome-DevTools\" >\u0110o TTFB b\u1eb1ng Google Chrome DevTools<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Kiem-tra-TTFB-bang-WebPageTest\" >Ki\u1ec3m tra TTFB b\u1eb1ng WebPageTest<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-cua-KeyCDN\" >\u0110o TTFB t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed b\u1eb1ng c\u00f4ng c\u1ee5 c\u1ee7a KeyCDN<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua\" >C\u00e1ch c\u1ea3i thi\u1ec7n Time To First Byte (TTFB) hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Phan-biet-noi-dung-tinh-va-noi-dung-dong\" >Ph\u00e2n bi\u1ec7t n\u1ed9i dung t\u0129nh v\u00e0 n\u1ed9i dung \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Nhung-yeu-to-can-kiem-tra-de-giam-TTFB\" >Nh\u1eefng y\u1ebfu t\u1ed1 c\u1ea7n ki\u1ec3m tra \u0111\u1ec3 gi\u1ea3m TTFB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Meo-ky-thuat-giup-giam-TTFB-va-cai-thien-toc-do-website\" >M\u1eb9o k\u1ef9 thu\u1eadt gi\u00fap gi\u1ea3m TTFB v\u00e0 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 website<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Cau-hoi-thuong-gap-FAQs\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#TTFB-co-phai-la-toan-bo-thoi-gian-load-web-khong\" >TTFB c\u00f3 ph\u1ea3i l\u00e0 to\u00e0n b\u1ed9 th\u1eddi gian load web kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Tai-sao-dung-mang-phan-phoi-noi-dung-CDN-ma-TTFB-van-cao\" >T\u1ea1i sao d\u00f9ng m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) m\u00e0 TTFB v\u1eabn cao?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Cloudflare-co-giup-giam-TTFB-tai-Viet-Nam-khong\" >Cloudflare c\u00f3 gi\u00fap gi\u1ea3m TTFB t\u1ea1i Vi\u1ec7t Nam kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Hosting-gia-re-co-anh-huong-nhieu-den-TTFB-khong\" >Hosting gi\u00e1 r\u1ebb c\u00f3 \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn TTFB kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/ttfb-la-gi\/#Ket-luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Time To First Byte (TTFB)<\/strong> l\u00e0 ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng th\u1eddi gian t\u1eeb khi tr\u00ecnh duy\u1ec7t g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 cho \u0111\u1ebfn khi nh\u1eadn \u0111\u01b0\u1ee3c byte d\u1eef li\u1ec7u \u0111\u1ea7u ti\u00ean. T\u1ed1i \u01b0u TTFB l\u00e0 b\u01b0\u1edbc \u0111i ti\u00ean quy\u1ebft \u0111\u1ec3 c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng SEO v\u00e0 gia t\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u TTFB l\u00e0 g\u00ec, hi\u1ec3u r\u00f5 ch\u1ec9 s\u1ed1 TTFB bao nhi\u00eau l\u00e0 t\u1ed1t, c\u00e1ch \u0111o l\u01b0\u1eddng TTFB ch\u00ednh x\u00e1c v\u00e0 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c chi\u1ebfn \u0111\u1ec3 gi\u1ea3m th\u1eddi gian ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7 xu\u1ed1ng m\u1ee9c l\u00fd t\u01b0\u1edfng nh\u1ea5t. T\u00ecm hi\u1ec3u ngay!<\/p>\n<h2><span class=\"ez-toc-section\" id=\"TTFB-la-gi\"><\/span>TTFB l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Time To First Byte (TTFB)<\/strong> l\u00e0 kho\u1ea3ng th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7, t\u00ednh t\u1eeb l\u00fac ng\u01b0\u1eddi d\u00f9ng b\u1eaft \u0111\u1ea7u g\u1eedi y\u00eau c\u1ea7u truy c\u1eadp website cho \u0111\u1ebfn khi tr\u00ecnh duy\u1ec7t nh\u1eadn \u0111\u01b0\u1ee3c m\u1ea9u d\u1eef li\u1ec7u \u0111\u1ea7u ti\u00ean. Ch\u1ec9 s\u1ed1 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y ch\u1ee7 v\u00e0 \u0111\u1ed9 nh\u1ea1y c\u1ee7a h\u1ea1 t\u1ea7ng m\u1ea1ng.<\/p>\n<p>D\u1ef1a tr\u00ean c\u00e1c ti\u00eau chu\u1ea9n t\u1eeb W3C (World Wide Web Consortium), vi\u1ec7c hi\u1ec3u v\u1ec1 <strong>\u0111\u1ecbnh ngh\u0129a TTFB<\/strong> kh\u00f4ng ch\u1ec9 d\u1eebng l\u1ea1i \u1edf m\u1ed9t con s\u1ed1 mil gi\u00e2y. \u0110\u00e2y l\u00e0 t\u1ed5ng h\u00f2a c\u1ee7a m\u1ed9t quy tr\u00ecnh g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc trung gian. \u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn kh\u00e1ch quan, b\u1ea1n c\u00f3 th\u1ec3 coi TTFB nh\u01b0 kho\u1ea3ng th\u1eddi gian t\u1eeb l\u00fac b\u1ea1n g\u1ecdi m\u00f3n t\u1ea1i nh\u00e0 h\u00e0ng cho \u0111\u1ebfn khi ng\u01b0\u1eddi ph\u1ee5c v\u1ee5 mang ra m\u00f3n khai v\u1ecb \u0111\u1ea7u ti\u00ean.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38690\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Time-To-First-Byte-TTFB-la-gi.jpg\" alt=\"Time To First Byte (TTFB) l\u00e0 g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Time-To-First-Byte-TTFB-la-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Time-To-First-Byte-TTFB-la-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Time-To-First-Byte-TTFB-la-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>M\u1ed9t <strong>ch\u1ec9 s\u1ed1 TTFB<\/strong>\u00a0th\u1ef1c ch\u1ea5t \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb ba giai \u0111o\u1ea1n ri\u00eang bi\u1ec7t:<\/p>\n<ol>\n<li><strong>Tra c\u1ee9u DNS (DNS Lookup):<\/strong> Th\u1eddi gian m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n x\u1eed l\u00fd \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 website t\u1eeb d\u1ea1ng ch\u1eef sang \u0111\u1ecba ch\u1ec9 IP v\u1eadt l\u00fd.<\/li>\n<li><strong>X\u1eed l\u00fd t\u1ea1i m\u00e1y ch\u1ee7 (Server Processing):<\/strong> \u0110\u00e2y l\u00e0 l\u00fac m\u00e1y ch\u1ee7 ti\u1ebfp nh\u1eadn y\u00eau c\u1ea7u, truy v\u1ea5n c\u00e1c t\u1eadp tin, ch\u1ea1y m\u00e3 ngu\u1ed3n (nh\u01b0 PHP) v\u00e0 truy xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li><strong>Ph\u1ea3n h\u1ed3i (Response Time):<\/strong> Th\u1eddi gian m\u00e1y ch\u1ee7 g\u1eedi nh\u1eefng byte \u0111\u1ea7u ti\u00ean quay tr\u1edf l\u1ea1i m\u00e1y t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng qua m\u00f4i tr\u01b0\u1eddng internet.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-TTFB-lai-quan-trong-doi-voi-SEO-va-Website\"><\/span>T\u1ea1i sao TTFB l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi SEO v\u00e0 Website?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Time To First Byte (TTFB) kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a m\u00e1y ch\u1ee7, m\u00e0 c\u00f2n \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 <strong>hi\u1ec7u su\u1ea5t website<\/strong>, <strong>tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/strong> v\u00e0 <strong>kh\u1ea3 n\u0103ng t\u1ed1i \u01b0u SEO<\/strong>. M\u1ed9t TTFB cao c\u00f3 th\u1ec3 t\u1ea1o ra chu\u1ed7i t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh t\u1ea3i trang, ngay c\u1ea3 khi c\u00e1c y\u1ebfu t\u1ed1 front-end \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u t\u1ed1t.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u00fd do ch\u00ednh khi\u1ebfn TTFB tr\u1edf th\u00e0nh ch\u1ec9 s\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3 SEO l\u1eabn hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh website.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anh-huong-truc-tiep-den-toc-do-tai-trang-tong-the\"><\/span>\u1ea2nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i trang t\u1ed5ng th\u1ec3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>TTFB \u0111\u1ea1i di\u1ec7n cho <strong>th\u1eddi gian ch\u1edd ph\u1ea3n h\u1ed3i \u0111\u1ea7u ti\u00ean t\u1eeb server<\/strong>. N\u1ebfu m\u00e1y ch\u1ee7 ph\u1ea3n h\u1ed3i ch\u1eadm, to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh t\u1ea3i trang s\u1ebd b\u1ecb tr\u00ec ho\u00e3n ngay t\u1eeb b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean.<\/p>\n<p>Theo ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t web:<\/p>\n<ul>\n<li>TTFB chi\u1ebfm <strong>20\u201340% t\u1ed5ng th\u1eddi gian t\u1ea3i trang<\/strong> \u0111\u1ed1i v\u1edbi nhi\u1ec1u website s\u1eed d\u1ee5ng CMS nh\u01b0 WordPress<\/li>\n<li>C\u00e1c ch\u1ec9 s\u1ed1 nh\u01b0 First Contentful Paint (FCP) hay Largest Contentful Paint (LCP) <strong>kh\u00f4ng th\u1ec3 b\u1eaft \u0111\u1ea7u s\u1edbm<\/strong> n\u1ebfu TTFB cao<\/li>\n<\/ul>\n<p>\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n<blockquote><p>Website c\u00f3 giao di\u1ec7n nh\u1eb9, h\u00ecnh \u1ea3nh t\u1ed1i \u01b0u nh\u01b0ng server ph\u1ea3n h\u1ed3i ch\u1eadm v\u1eabn cho tr\u1ea3i nghi\u1ec7m k\u00e9m.<\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Tac-dong-gian-tiep-den-thu-hang-SEO\"><\/span>T\u00e1c \u0111\u1ed9ng gi\u00e1n ti\u1ebfp \u0111\u1ebfn th\u1ee9 h\u1ea1ng SEO<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Google kh\u00f4ng x\u00e1c nh\u1eadn TTFB l\u00e0 y\u1ebfu t\u1ed1 x\u1ebfp h\u1ea1ng tr\u1ef1c ti\u1ebfp, tuy nhi\u00ean:<\/p>\n<ul>\n<li>TTFB \u1ea3nh h\u01b0\u1edfng m\u1ea1nh \u0111\u1ebfn <strong>tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/strong><\/li>\n<li>Tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng l\u00e0 m\u1ed9t ph\u1ea7n trong h\u1ec7 th\u1ed1ng \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng trang<\/li>\n<\/ul>\n<p>C\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li>TTFB cao \u2192 trang hi\u1ec3n th\u1ecb ch\u1eadm<\/li>\n<li>Trang ch\u1eadm \u2192 t\u1ef7 l\u1ec7 tho\u00e1t (bounce rate) t\u0103ng<\/li>\n<li>Bounce rate cao \u2192 t\u00edn hi\u1ec7u ti\u00eau c\u1ef1c v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u1ed9i dung<\/li>\n<\/ul>\n<p>Ngo\u00e0i ra, Google t\u1eebng nhi\u1ec1u l\u1ea7n nh\u1ea5n m\u1ea1nh r\u1eb1ng:<\/p>\n<blockquote><p>Website c\u00f3 th\u1eddi gian ph\u1ea3n h\u1ed3i server ch\u1eadm s\u1ebd kh\u00f3 \u0111\u1ea1t \u0111i\u1ec3m hi\u1ec7u su\u1ea5t t\u1ed1t trong PageSpeed Insights v\u00e0 Lighthouse.<\/p><\/blockquote>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38692\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-quan-trong-doi-voi-SEO-va-Website.jpg\" alt=\"TTFB quan tr\u1ecdng \u0111\u1ed1i v\u1edbi SEO v\u00e0 Website\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-quan-trong-doi-voi-SEO-va-Website.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-quan-trong-doi-voi-SEO-va-Website-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-quan-trong-doi-voi-SEO-va-Website-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"Lien-quan-chat-che-den-Core-Web-Vitals\"><\/span>Li\u00ean quan ch\u1eb7t ch\u1ebd \u0111\u1ebfn Core Web Vitals<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1eb7c d\u00f9 TTFB <strong>kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 Core Web Vitals<\/strong>, nh\u01b0ng n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c ch\u1ec9 s\u1ed1 trong nh\u00f3m n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0:<\/p>\n<ul>\n<li><strong>LCP (Largest Contentful Paint):<\/strong><br \/>\nLCP kh\u00f4ng th\u1ec3 c\u1ea3i thi\u1ec7n n\u1ebfu server ph\u1ea3n h\u1ed3i ch\u1eadm<\/li>\n<li><strong>INP (Interaction to Next Paint):<\/strong><br \/>\nBackend ch\u1eadm c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 tr\u1ec5 ph\u1ea3n h\u1ed3i khi ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c<\/li>\n<\/ul>\n<p>Do \u0111\u00f3, trong th\u1ef1c t\u1ebf:<\/p>\n<blockquote><p>Mu\u1ed1n c\u1ea3i thi\u1ec7n Core Web Vitals m\u1ed9t c\u00e1ch b\u1ec1n v\u1eefng, c\u1ea7n t\u1ed1i \u01b0u TTFB tr\u01b0\u1edbc khi t\u1ed1i \u01b0u front-end.<\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Phan-anh-chat-luong-ha-tang-server-va-hosting\"><\/span>Ph\u1ea3n \u00e1nh ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1 t\u1ea7ng server v\u00e0 hosting<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>TTFB th\u01b0\u1eddng \u0111\u01b0\u1ee3c xem l\u00e0 \u201ct\u1ea5m g\u01b0\u01a1ng\u201d ph\u1ea3n chi\u1ebfu hi\u1ec7u su\u1ea5t h\u1ea1 t\u1ea7ng ph\u00eda sau website, bao g\u1ed3m:<\/p>\n<ul>\n<li>Ch\u1ea5t l\u01b0\u1ee3ng hosting ho\u1eb7c VPS<\/li>\n<li>C\u1ea5u h\u00ecnh web server (Apache, Nginx, LiteSpeed)<\/li>\n<li>Kh\u1ea3 n\u0103ng x\u1eed l\u00fd backend v\u00e0 database<\/li>\n<li>V\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a server<\/li>\n<\/ul>\n<p>M\u1ed9t website c\u00f3 TTFB \u1ed5n \u0111\u1ecbnh th\u01b0\u1eddng cho th\u1ea5y:<\/p>\n<ul>\n<li>Server kh\u00f4ng qu\u00e1 t\u1ea3i<\/li>\n<li>T\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 h\u1ee3p l\u00fd<\/li>\n<li>C\u1ea5u h\u00ecnh backend \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u t\u1ed1t<\/li>\n<\/ul>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, TTFB cao k\u00e9o d\u00e0i l\u00e0 d\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn c\u1ee7a:<\/p>\n<ul>\n<li>Shared Hosting b\u1ecb qu\u00e1 t\u1ea3i<\/li>\n<li>Server \u0111\u1eb7t xa ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau<\/li>\n<li>H\u1ec7 th\u1ed1ng cache ho\u1ea1t \u0111\u1ed9ng k\u00e9m hi\u1ec7u qu\u1ea3<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Anh-huong-den-ty-le-chuyen-doi-va-hieu-qua-kinh-doanh\"><\/span>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i v\u00e0 hi\u1ec7u qu\u1ea3 kinh doanh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 h\u00e0nh vi ng\u01b0\u1eddi d\u00f9ng cho th\u1ea5y:<\/p>\n<ul>\n<li>Ch\u1ec9 c\u1ea7n website ch\u1eadm h\u01a1n <strong>1 gi\u00e2y<\/strong> c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i<\/li>\n<li>Ng\u01b0\u1eddi d\u00f9ng c\u00f3 xu h\u01b0\u1edbng r\u1eddi b\u1ecf trang n\u1ebfu ph\u1ea3i ch\u1edd qu\u00e1 l\u00e2u \u0111\u1ec3 th\u1ea5y n\u1ed9i dung \u0111\u1ea7u ti\u00ean<\/li>\n<\/ul>\n<p>Trong b\u1ed1i c\u1ea3nh \u0111\u00f3, TTFB \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng v\u00ec:<\/p>\n<ul>\n<li>N\u00f3 quy\u1ebft \u0111\u1ecbnh <strong>th\u1eddi \u0111i\u1ec3m ng\u01b0\u1eddi d\u00f9ng b\u1eaft \u0111\u1ea7u nh\u00ecn th\u1ea5y n\u1ed9i dung<\/strong><\/li>\n<li>TTFB th\u1ea5p gi\u00fap website ph\u1ea3n h\u1ed3i nhanh, t\u1ea1o c\u1ea3m gi\u00e1c m\u01b0\u1ee3t v\u00e0 \u0111\u00e1ng tin c\u1eady<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi website b\u00e1n h\u00e0ng, landing page ho\u1eb7c blog ki\u1ebfm ti\u1ec1n, TTFB t\u1ed1t g\u00f3p ph\u1ea7n:<\/p>\n<ul>\n<li>Gi\u1eef ch\u00e2n ng\u01b0\u1eddi d\u00f9ng l\u00e2u h\u01a1n<\/li>\n<li>T\u0103ng kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/li>\n<li>C\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 SEO l\u1eabn kinh doanh<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-ban-nen-dac-biet-quan-tam-den-TTFB\"><\/span>Khi n\u00e0o b\u1ea1n n\u00ean \u0111\u1eb7c bi\u1ec7t quan t\u00e2m \u0111\u1ebfn TTFB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>TTFB \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng n\u1ebfu website c\u1ee7a b\u1ea1n:<\/p>\n<ul>\n<li>Nh\u1eafm \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng t\u1ea1i Vi\u1ec7t Nam nh\u01b0ng server \u0111\u1eb7t \u1edf n\u01b0\u1edbc ngo\u00e0i<\/li>\n<li>\u0110ang g\u1eb7p c\u1ea3nh b\u00e1o \u201cReduce server response time\u201d trong PageSpeed Insights<\/li>\n<li>\u0110\u00e3 t\u1ed1i \u01b0u front-end nh\u01b0ng \u0111i\u1ec3m t\u1ed1c \u0111\u1ed9 v\u1eabn th\u1ea5p<\/li>\n<li>S\u1eed d\u1ee5ng CMS n\u1eb7ng nh\u01b0 WordPress, WooCommerce<\/li>\n<\/ul>\n<p>Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 t\u1ed1i \u01b0u TTFB th\u01b0\u1eddng mang l\u1ea1i hi\u1ec7u qu\u1ea3 r\u00f5 r\u1ec7t h\u01a1n so v\u1edbi vi\u1ec7c ti\u1ebfp t\u1ee5c t\u1ed1i \u01b0u giao di\u1ec7n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"TTFB-bao-nhieu-la-tot-Tieu-chuan-danh-gia-tu-Google\"><\/span>TTFB bao nhi\u00eau l\u00e0 t\u1ed1t? Ti\u00eau chu\u1ea9n \u0111\u00e1nh gi\u00e1 t\u1eeb Google<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>TTFB theo Google khuy\u1ebfn ngh\u1ecb l\u00e0 d\u01b0\u1edbi 200ms, \u0111\u01b0\u1ee3c coi l\u00e0 ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng cao \u1ea3nh h\u01b0\u1edfng t\u00edch c\u1ef1c \u0111\u1ebfn SEO. H\u01b0\u1edbng d\u1eabn chung t\u1eeb web.dev (Google) khuy\u1ebfn ngh\u1ecb d\u01b0\u1edbi 800ms \u0111\u1ec3 \u0111\u1ea1t m\u1ee9c &#8220;c\u1ea7n c\u1ea3i thi\u1ec7n&#8221;, v\u1edbi tr\u00ean m\u1ee9c n\u00e0y b\u1ecb \u0111\u00e1nh gi\u00e1 k\u00e9m.<\/p>\n<p>Google \u01b0u ti\u00ean TTFB th\u1ea5p v\u00ec n\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn Core Web Vitals (nh\u01b0 LCP, FCP), d\u00f9 kh\u00f4ng ph\u1ea3i ch\u1ec9 s\u1ed1 ch\u00ednh th\u1ee9c.<\/p>\n<ul>\n<li><strong>D\u01b0\u1edbi 200ms<\/strong>: T\u1ed1t, gi\u00fap Googlebot crawl nhanh v\u00e0 t\u0103ng th\u1ee9 h\u1ea1ng.<\/li>\n<li><strong>600-800ms<\/strong>: Ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c nh\u01b0ng c\u1ea7n t\u1ed1i \u01b0u; tr\u00ean 800ms l\u00e0m gi\u1ea3m tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 SEO.<\/li>\n<\/ul>\n<p>M\u1ee5c ti\u00eau l\u00fd t\u01b0\u1edfng nh\u1ea5t cho m\u1ecdi website l\u00e0 duy tr\u00ec \u1edf m\u1ee9c d\u01b0\u1edbi 200ms. Tuy nhi\u00ean, v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p ho\u1eb7c website b\u00e1n h\u00e0ng c\u00f3 nhi\u1ec1u d\u1eef li\u1ec7u, m\u1ee9c d\u01b0\u1edbi 400ms v\u1eabn \u0111\u01b0\u1ee3c xem l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u1edf m\u00f4i tr\u01b0\u1eddng internet Vi\u1ec7t Nam.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38693\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-bao-nhieu-la-tot-theo-Google.jpg\" alt=\"TTFB bao nhi\u00eau l\u00e0 t\u1ed1t theo Google\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-bao-nhieu-la-tot-theo-Google.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-bao-nhieu-la-tot-theo-Google-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/TTFB-bao-nhieu-la-tot-theo-Google-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen-nhan-pho-bien-khien-chi-so-TTFB-cao\"><\/span>Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn khi\u1ebfn ch\u1ec9 s\u1ed1 TTFB cao<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng b\u00e1o \u0111\u1ecf ch\u1ec9 s\u1ed1 TTFB, b\u1ea1n c\u1ea7n ki\u1ec3m tra ngay c\u00e1c t\u00e1c nh\u00e2n sau \u0111\u00e2y \u0111\u1ec3 t\u00ecm ra <strong>nguy\u00ean nh\u00e2n TTFB ch\u1eadm<\/strong>:<\/p>\n<ol>\n<li><strong>D\u1ecbch v\u1ee5 l\u01b0u tr\u1eef (Hosting) k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng:<\/strong> \u0110\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t. C\u00e1c g\u00f3i hosting gi\u00e1 r\u1ebb th\u01b0\u1eddng chia s\u1ebb t\u00e0i nguy\u00ean cho qu\u00e1 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng, d\u1eabn \u0111\u1ebfn m\u00e1y ch\u1ee7 lu\u00f4n trong t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i.<\/li>\n<li><strong>V\u1ecb tr\u00ed m\u00e1y ch\u1ee7 \u1edf qu\u00e1 xa:<\/strong> N\u1ebfu kh\u00e1ch h\u00e0ng t\u1ea1i Vi\u1ec7t Nam nh\u01b0ng b\u1ea1n thu\u00ea m\u00e1y ch\u1ee7 t\u1ea1i M\u1ef9 ho\u1eb7c Ch\u00e2u \u00c2u, d\u1eef li\u1ec7u ph\u1ea3i \u0111i qua nhi\u1ec1u tr\u1ea1m trung chuy\u1ec3n qu\u1ed1c t\u1ebf, l\u00e0m t\u0103ng th\u1eddi gian tr\u1ec5.<\/li>\n<li><strong>M\u00e3 ngu\u1ed3n ch\u01b0a \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u:<\/strong> S\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u plugin kh\u00f4ng c\u1ea7n thi\u1ebft ho\u1eb7c m\u00e3 ngu\u1ed3n l\u1ed7i th\u1eddi khi\u1ebfn m\u00e1y ch\u1ee7 ph\u1ea3i t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean x\u1eed l\u00fd h\u01a1n b\u00ecnh th\u01b0\u1eddng.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ed3ng k\u1ec1nh:<\/strong> C\u00e1c b\u1ea3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c d\u1ecdn d\u1eb9p, ch\u1ee9a h\u00e0ng tri\u1ec7u d\u00f2ng d\u1eef li\u1ec7u r\u00e1c s\u1ebd l\u00e0m ch\u1eadm m\u1ecdi truy v\u1ea5n.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 ch\u01b0a chu\u1ea9n:<\/strong> Vi\u1ec7c kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1c c\u01a1 ch\u1ebf l\u01b0u \u0111\u1ec7m (cache) khi\u1ebfn m\u00e1y ch\u1ee7 ph\u1ea3i th\u1ef1c hi\u1ec7n l\u1ea1i to\u00e0n b\u1ed9 quy tr\u00ecnh x\u1eed l\u00fd cho m\u1ecdi y\u00eau c\u1ea7u truy c\u1eadp gi\u1ed1ng nhau.<\/li>\n<\/ol>\n<p>Bi\u1ebft r\u00f5 <strong>t\u1ea1i sao TTFB cao<\/strong> gi\u00fap b\u1ea1n c\u00f3 h\u01b0\u1edbng x\u1eed l\u00fd \u0111\u00fang \u0111\u1eafn, tr\u00e1nh vi\u1ec7c thay \u0111\u1ed5i m\u00e3 ngu\u1ed3n trong khi v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1 n\u1eb1m \u1edf h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-kiem-tra-va-toi-uu-Time-To-First-Byte-TTFB-cho-website\"><\/span>C\u00e1ch ki\u1ec3m tra v\u00e0 t\u1ed1i \u01b0u Time To First Byte (TTFB) cho website<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Cach-do-Time-To-First-Byte-TTFB-chinh-xac\"><\/span>C\u00e1ch \u0111o Time To First Byte (TTFB) ch\u00ednh x\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hi\u1ec7n nay c\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau \u0111\u1ec3 \u0111o l\u01b0\u1eddng Time To First Byte, v\u00e0 m\u1ed7i c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 cho ra k\u1ebft qu\u1ea3 ch\u00eanh l\u1ec7ch nh\u1eb9. V\u00ec v\u1eady, khi \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c m\u1ed9t c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng nh\u1ea5t qu\u00e1n c\u00f4ng c\u1ee5 \u0111\u00f3 l\u00e0m chu\u1ea9n \u0111\u1ec3 theo d\u00f5i v\u00e0 so s\u00e1nh hi\u1ec7u su\u1ea5t TTFB c\u1ee7a website theo th\u1eddi gian.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 ph\u1ed5 bi\u1ebfn gi\u00fap b\u1ea1n ki\u1ec3m tra TTFB c\u1ee7a website.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-tra-TTFB-website-voi-KeyCDN\"><\/span>Ki\u1ec3m tra TTFB website v\u1edbi KeyCDN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o trang <strong><a href=\"https:\/\/tools.keycdn.com\/performance\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/tools.keycdn.com\/performance<\/a><\/strong>, sau \u0111\u00f3 nh\u1eadp t\u00ean mi\u1ec1n c\u1ea7n ki\u1ec3m tra v\u00e0 nh\u1ea5n <strong>Test<\/strong> \u0111\u1ec3 xem c\u00e1c th\u00f4ng s\u1ed1 hi\u1ec7u su\u1ea5t, trong \u0111\u00f3 c\u00f3 Time To First Byte c\u1ee7a website.<\/p>\n<p>C\u00f4ng c\u1ee5 n\u00e0y cho ph\u00e9p b\u1ea1n \u0111\u00e1nh gi\u00e1 ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7 t\u1eeb nhi\u1ec1u khu v\u1ef1c kh\u00e1c nhau, gi\u00fap c\u00f3 c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a website.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38679\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Kiem-tra-TTFB-website-voi-KeyCDN.png\" alt=\"Ki\u1ec3m tra TTFB website v\u1edbi KeyCDN\" width=\"771\" height=\"693\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Kiem-tra-TTFB-website-voi-KeyCDN.png 771w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Kiem-tra-TTFB-website-voi-KeyCDN-300x270.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Kiem-tra-TTFB-website-voi-KeyCDN-768x690.png 768w\" sizes=\"auto, (max-width: 771px) 100vw, 771px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-tra-TTFB-bang-SpeedVitals\"><\/span>Ki\u1ec3m tra TTFB b\u1eb1ng SpeedVitals<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 \u0111o TTFB b\u1eb1ng SpeedVitals, b\u1ea1n truy c\u1eadp v\u00e0o <strong><a href=\"https:\/\/speedvitals.com\/ttfb-test\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/speedvitals.com\/ttfb-test<\/a><\/strong>, nh\u1eadp t\u00ean mi\u1ec1n mu\u1ed1n ki\u1ec3m tra v\u00e0 nh\u1ea5n <strong>Enter<\/strong>. Sau \u0111\u00f3, c\u00f4ng c\u1ee5 s\u1ebd hi\u1ec3n th\u1ecb c\u00e1c th\u00f4ng s\u1ed1 li\u00ean quan \u0111\u1ebfn Time To First Byte.<\/p>\n<p>SpeedVitals h\u1ed7 tr\u1ee3 ki\u1ec3m tra t\u1eeb <strong>40 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd<\/strong>, v\u00ec v\u1eady n\u1ebfu website c\u1ee7a b\u1ea1n c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp to\u00e0n c\u1ea7u, b\u1ea1n n\u00ean d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 n\u00e0y \u0111\u1ec3 c\u00e2n nh\u1eafc c\u00e1c gi\u1ea3i ph\u00e1p ph\u00e2n ph\u1ed1i n\u1ed9i dung sao cho t\u1ed1i \u01b0u h\u01a1n.<\/p>\n<p>Ngo\u00e0i ra, SpeedVitals c\u00f2n hi\u1ec3n th\u1ecb TTFB theo t\u1eebng khu v\u1ef1c c\u1ee5 th\u1ec3, gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng theo d\u00f5i v\u00e0 so s\u00e1nh hi\u1ec7u su\u1ea5t ph\u1ea3n h\u1ed3i t\u1ea1i c\u00e1c th\u1ecb tr\u01b0\u1eddng m\u00e0 b\u1ea1n quan t\u00e2m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Do-TTFB-voi-cong-cu-FlyingTTFB\"><\/span>\u0110o TTFB v\u1edbi c\u00f4ng c\u1ee5 FlyingTTFB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>FlyingTTFB l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi \u0111\u1ed9i ng\u0169 <strong>FlyingPress<\/strong>, v\u1ed1n kh\u00e1 quen thu\u1ed9c trong c\u1ed9ng \u0111\u1ed3ng t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 website. B\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp <strong><a href=\"https:\/\/flyingttfb.com\/\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/flyingttfb.com\/<\/a><\/strong>, sau \u0111\u00f3 nh\u1eadp URL c\u1ea7n ki\u1ec3m tra \u0111\u1ec3 xem th\u00f4ng s\u1ed1 TTFB t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38680\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-voi-cong-cu-FlyingTTFB.png\" alt=\"\u0110o TTFB v\u1edbi c\u00f4ng c\u1ee5 FlyingTTFB\" width=\"699\" height=\"665\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-voi-cong-cu-FlyingTTFB.png 699w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-voi-cong-cu-FlyingTTFB-300x285.png 300w\" sizes=\"auto, (max-width: 699px) 100vw, 699px\" \/><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"Do-TTFB-bang-Google-Chrome-DevTools\"><\/span>\u0110o TTFB b\u1eb1ng Google Chrome DevTools<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1edbi tr\u00ecnh duy\u1ec7t Google Chrome, b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 \u0111o TTFB th\u00f4ng qua c\u00f4ng c\u1ee5 DevTools. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng khi ki\u1ec3m tra tr\u1ef1c ti\u1ebfp t\u1eeb m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, k\u1ebft qu\u1ea3 TTFB c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i internet v\u00e0 \u0111\u1ed9 tr\u1ec5 m\u1ea1ng t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111o.<\/p>\n<p>B\u1ea1n c\u00f3 th\u1ec3 m\u1edf DevTools theo m\u1ed9t trong c\u00e1c c\u00e1ch sau:<\/p>\n<ul>\n<li>Ch\u1ecdn <strong>C\u00f4ng c\u1ee5 kh\u00e1c \u2192 C\u00f4ng c\u1ee5 d\u00e0nh cho nh\u00e0 ph\u00e1t tri\u1ec3n<\/strong> trong menu Chrome<\/li>\n<li>Nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o b\u1ea5t k\u1ef3 ph\u1ea7n t\u1eed n\u00e0o tr\u00ean trang v\u00e0 ch\u1ecdn <strong>Ki\u1ec3m tra<\/strong><\/li>\n<li>S\u1eed d\u1ee5ng ph\u00edm t\u1eaft <strong>Ctrl + Shift + I<\/strong> (Windows) ho\u1eb7c <strong>Cmd + Option + I<\/strong> (macOS)<\/li>\n<\/ul>\n<p>Sau \u0111\u00f3, chuy\u1ec3n sang tab <strong>Network<\/strong> \u0111\u1ec3 theo d\u00f5i hi\u1ec7u su\u1ea5t t\u1ea3i trang v\u00e0 th\u00f4ng s\u1ed1 TTFB t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-tra-TTFB-bang-WebPageTest\"><\/span>Ki\u1ec3m tra TTFB b\u1eb1ng WebPageTest<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>WebPageTest c\u0169ng l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 \u0111o Time To First Byte. Theo \u0111\u1ecbnh ngh\u0129a trong b\u1ea3ng thu\u1eadt ng\u1eef c\u1ee7a WebPageTest, th\u1eddi gian m\u1ee5c ti\u00eau \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng t\u1ed5ng th\u1eddi gian th\u01b0\u01a1ng l\u01b0\u1ee3ng DNS, socket v\u00e0 SSL, c\u1ed9ng th\u00eam 100ms.<\/p>\n<p>M\u1ed7i khi TTFB v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng m\u1ee5c ti\u00eau th\u00eam 100ms, \u0111i\u1ec3m \u0111\u00e1nh gi\u00e1 s\u1ebd b\u1ecb tr\u1eeb t\u01b0\u01a1ng \u1ee9ng m\u1ed9t b\u1eadc ch\u1eef c\u00e1i. C\u00e1ch ch\u1ea5m \u0111i\u1ec3m n\u00e0y gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng nh\u1eadn bi\u1ebft m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 c\u1ee7a ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-cua-KeyCDN\"><\/span>\u0110o TTFB t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed b\u1eb1ng c\u00f4ng c\u1ee5 c\u1ee7a KeyCDN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>KeyCDN cung c\u1ea5p m\u1ed9t c\u00f4ng c\u1ee5 ki\u1ec3m tra hi\u1ec7u su\u1ea5t web cho ph\u00e9p \u0111o TTFB \u0111\u1ed3ng th\u1eddi t\u1eeb 14 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau. \u0110\u00e2y l\u00e0 c\u00e1ch \u0111o r\u1ea5t ph\u00f9 h\u1ee3p n\u1ebfu website c\u1ee7a b\u1ea1n c\u00f3 ng\u01b0\u1eddi d\u00f9ng \u1edf nhi\u1ec1u qu\u1ed1c gia.<\/p>\n<p>Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn th\u1ea5y TTFB t\u1ea1i Vi\u1ec7t Nam th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c qu\u1ed1c gia kh\u00e1c. Nguy\u00ean nh\u00e2n l\u00e0 do m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong n\u01b0\u1edbc, cho th\u1ea5y r\u00f5 r\u00e0ng r\u1eb1ng <strong>kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd v\u00e0 \u0111\u1ed9 tr\u1ec5 m\u1ea1ng c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn TTFB<\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-38681\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-KeyCDN-1024x512.png\" alt=\"\u0110o TTFB t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed b\u1eb1ng c\u00f4ng c\u1ee5 KeyCDN\" width=\"800\" height=\"400\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-KeyCDN-1024x512.png 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-KeyCDN-300x150.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-KeyCDN-768x384.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Do-TTFB-tu-nhieu-vi-tri-bang-cong-cu-KeyCDN.png 1460w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua\"><\/span>C\u00e1ch c\u1ea3i thi\u1ec7n Time To First Byte (TTFB) hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Phan-biet-noi-dung-tinh-va-noi-dung-dong\"><\/span>Ph\u00e2n bi\u1ec7t n\u1ed9i dung t\u0129nh v\u00e0 n\u1ed9i dung \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 t\u1ed1i \u01b0u TTFB l\u00e0 x\u00e1c \u0111\u1ecbnh r\u00f5 s\u1ef1 kh\u00e1c nhau gi\u1eefa n\u1ed9i dung t\u0129nh v\u00e0 n\u1ed9i dung \u0111\u1ed9ng tr\u00ean website.<\/p>\n<p>N\u1ed9i dung t\u0129nh l\u00e0 c\u00e1c t\u1ec7p \u0111\u00e3 t\u1ed3n t\u1ea1i s\u1eb5n tr\u00ean m\u00e1y ch\u1ee7 web, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u00ecnh \u1ea3nh, t\u1ec7p JavaScript v\u00e0 CSS. Trong khi \u0111\u00f3, v\u1edbi c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb n\u1ed9i dung nh\u01b0 WordPress, Joomla hay Drupal, ph\u1ea7n l\u1edbn c\u00e1c trang web \u0111\u01b0\u1ee3c t\u1ea1o ra l\u00e0 n\u1ed9i dung \u0111\u1ed9ng, c\u1ea7n x\u1eed l\u00fd ph\u00eda m\u00e1y ch\u1ee7 tr\u01b0\u1edbc khi ph\u1ea3n h\u1ed3i cho tr\u00ecnh duy\u1ec7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nhung-yeu-to-can-kiem-tra-de-giam-TTFB\"><\/span>Nh\u1eefng y\u1ebfu t\u1ed1 c\u1ea7n ki\u1ec3m tra \u0111\u1ec3 gi\u1ea3m TTFB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u01b0\u1edbc h\u1ebft, b\u1ea1n n\u00ean ki\u1ec3m tra m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp tr\u00ean website. N\u1ebfu m\u00e1y ch\u1ee7 th\u01b0\u1eddng xuy\u00ean qu\u00e1 t\u1ea3i, TTFB s\u1ebd t\u0103ng cao.<\/p>\n<p>Ti\u1ebfp theo, h\u00e3y \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y ch\u1ee7 web. \u0110\u1ed9 tr\u1ec5 m\u1ea1ng, t\u1ee9c th\u1eddi gian \u0111\u1ec3 c\u00e1c g\u00f3i d\u1eef li\u1ec7u truy\u1ec1n t\u1eeb m\u00e1y ch\u1ee7 \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng, c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn TTFB.<\/p>\n<p>Trong tr\u01b0\u1eddng h\u1ee3p website c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp qu\u1ed1c t\u1ebf l\u1edbn ho\u1eb7c b\u1ea1n ch\u01b0a h\u00e0i l\u00f2ng v\u1edbi Time To First Byte t\u1eeb nh\u00e0 cung c\u1ea5p hosting hi\u1ec7n t\u1ea1i, vi\u1ec7c s\u1eed d\u1ee5ng M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u00e1ng c\u00e2n nh\u1eafc.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, \u0111\u1eebng b\u1ecf qua h\u1ec7 th\u1ed1ng DNS. N\u1ebfu qu\u00e1 tr\u00ecnh tra c\u1ee9u DNS di\u1ec5n ra ch\u1eadm, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 n\u00fat th\u1eaft c\u1ed5 chai. Khi \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 xem x\u00e9t chuy\u1ec3n sang c\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 \u0111\u1ecbnh danh kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 Cloudflare.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-38694\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua.jpg\" alt=\"C\u00e1ch c\u1ea3i thi\u1ec7n Time To First Byte (TTFB) hi\u1ec7u qu\u1ea3\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/Cach-cai-thien-Time-To-First-Byte-TTFB-hieu-qua-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Meo-ky-thuat-giup-giam-TTFB-va-cai-thien-toc-do-website\"><\/span>M\u1eb9o k\u1ef9 thu\u1eadt gi\u00fap gi\u1ea3m TTFB v\u00e0 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 website<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 t\u1ed1i \u01b0u Time To First Byte hi\u1ec7u qu\u1ea3 h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt sau:<\/p>\n<ul>\n<li>S\u1eed d\u1ee5ng web server nh\u1eb9 nh\u01b0 <strong>NGINX<\/strong> ho\u1eb7c c\u00e1c proxy b\u1ed9 nh\u1edb \u0111\u1ec7m nh\u01b0 <strong>Varnish<\/strong> hay <strong>SQUID.<\/strong><\/li>\n<li>T\u1ed1i \u01b0u k\u1ebft n\u1ed1i SSL b\u1eb1ng c\u00e1ch k\u00edch ho\u1ea1t b\u1ed9 nh\u1edb \u0111\u1ec7m phi\u00ean SSL v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c b\u1ed9 m\u00e3 h\u00f3a l\u1ed7i th\u1eddi, ch\u1eadm ho\u1eb7c kh\u00f4ng c\u00f2n an to\u00e0n.<\/li>\n<li>T\u1ed1i \u01b0u m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u1ea5u h\u00ecnh h\u1ee3p l\u00fd \u0111\u1ec3 c\u00e1c truy v\u1ea5n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd trong b\u1ed9 nh\u1edb thay v\u00ec ghi tr\u1ef1c ti\u1ebfp xu\u1ed1ng \u1ed5 \u0111\u0129a.<\/li>\n<li>Ki\u1ec3m so\u00e1t vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb ph\u1ee5, v\u00ec s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u ho\u1eb7c qu\u00e1 \u00edt \u0111\u1ec1u c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7.<\/li>\n<li>Tri\u1ec3n khai <strong>HTTP\/2 ho\u1eb7c HTTP\/3<\/strong>; d\u00f9 trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p gh\u00e9p k\u00eanh HTTP c\u00f3 th\u1ec3 l\u00e0m TTFB t\u0103ng nh\u1eb9, nh\u01b0ng l\u1ee3i \u00edch v\u1ec1 t\u1ed1c \u0111\u1ed9 t\u1ed5ng th\u1ec3 l\u00e0 r\u1ea5t \u0111\u00e1ng k\u1ec3.<\/li>\n<li>Cu\u1ed1i c\u00f9ng, \u0111\u1eebng ng\u1ea7n ng\u1ea1i n\u00e2ng c\u1ea5p ph\u1ea7n m\u1ec1m. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 v\u00e0 phi\u00ean b\u1ea3n m\u1edbi th\u01b0\u1eddng gi\u00fap c\u1ea3i thi\u1ec7n r\u00f5 r\u1ec7t Time To First Byte nh\u1edd hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n<div class=\"highlight-cta-box\">\n<p><strong>InterData<\/strong> l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p \u0111\u1ec3 <strong>c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i m\u00e1y ch\u1ee7<\/strong> (TTFB) nh\u1edd h\u1ea1 t\u1ea7ng \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 b\u00e0i b\u1ea3n v\u1edbi<strong> \u1ed5 c\u1ee9ng NVMe t\u1ed1c \u0111\u1ed9 cao<\/strong>, <strong>CPU Intel th\u1ebf h\u1ec7 m\u1edbi<\/strong>, k\u1ebft h\u1ee3p <strong>LiteSpeed<\/strong> <strong>Enterprise<\/strong>, <strong>b\u0103ng th\u00f4ng l\u1edbn<\/strong> v\u00e0 <strong>trung t\u00e2m d\u1eef li\u1ec7u \u0111\u1ea1t chu\u1ea9n Datacenter Tier III<\/strong>. C\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 <em>Hosting NVMe gi\u00e1 r\u1ebb<\/em>, <em>Hosting SEO<\/em>, <em>Hosting AMD<\/em>, <em>VPS NVMe<\/em>, <em>VPS AMD&#8230;<\/em> \u0111\u1ec1u \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh s\u1eb5n theo h\u01b0\u1edbng t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t, t\u00edch h\u1ee3p c\u01a1 ch\u1ebf cache gi\u00fap website ph\u1ea3n h\u1ed3i nhanh v\u00e0 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh.<\/p>\n<p>B\u00ean c\u1ea1nh h\u1ea1 t\u1ea7ng, InterData c\u00f2n s\u1edf h\u1eefu \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt gi\u00e0u kinh nghi\u1ec7m <strong>h\u1ed7 tr\u1ee3 24\/7<\/strong>, c\u00f9ng cam k\u1ebft <strong>uptime 99.9%<\/strong> nh\u1eb1m \u0111\u1ea3m b\u1ea3o website lu\u00f4n ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c. T\u00f9y theo quy m\u00f4 v\u00e0 m\u1ee5c ti\u00eau s\u1eed d\u1ee5ng, kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 linh ho\u1ea1t l\u1ef1a ch\u1ecdn t\u1eeb MaxSpeed Hosting, VPS NVMe cho \u0111\u1ebfn m\u00e1y ch\u1ee7 v\u1eadt l\u00fd, \u0111\u00e1p \u1ee9ng t\u1ed1t nhu c\u1ea7u t\u1eeb website c\u00e1 nh\u00e2n \u0111\u1ebfn h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/interdata.vn\/thue-hosting\/\" class=\"button primary is-primary is-medium\">\n\t\t<span>THAM KH\u1ea2O B\u1ea2NG GI\u00c1 HOSTING<\/span>\n\t<\/a>\n <a href=\"https:\/\/interdata.vn\/thue-vps\/\" class=\"button primary is-primary is-medium\">\n\t\t<span>THAM KH\u1ea2O B\u1ea2NG GI\u00c1 VPS<\/span>\n\t<\/a>\n\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-FAQs\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"TTFB-co-phai-la-toan-bo-thoi-gian-load-web-khong\"><\/span>TTFB c\u00f3 ph\u1ea3i l\u00e0 to\u00e0n b\u1ed9 th\u1eddi gian load web kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng. TTFB ch\u1ec9 \u0111\u1ea1i di\u1ec7n cho giai \u0111o\u1ea1n kh\u1edfi \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ea3i trang. T\u1ed5ng th\u1eddi gian t\u1ea3i trang (Load Time) c\u00f2n bao g\u1ed3m th\u1eddi gian t\u1ea3i to\u00e0n b\u1ed9 h\u00ecnh \u1ea3nh, m\u00e3 CSS, Javascript v\u00e0 hi\u1ec3n th\u1ecb ch\u00fang tr\u00ean m\u00e0n h\u00ecnh. Tuy nhi\u00ean, TTFB nhanh l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n \u0111\u1ec3 t\u1ed5ng th\u1eddi gian t\u1ea3i trang nhanh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai-sao-dung-mang-phan-phoi-noi-dung-CDN-ma-TTFB-van-cao\"><\/span>T\u1ea1i sao d\u00f9ng m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) m\u00e0 TTFB v\u1eabn cao?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m TTFB n\u1ebfu d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u \u0111\u1ec7m t\u1ea1i c\u00e1c m\u00e1y ch\u1ee7 g\u1ea7n ng\u01b0\u1eddi d\u00f9ng (Cache Hit). Tuy nhi\u00ean, n\u1ebfu y\u00eau c\u1ea7u ch\u01b0a \u0111\u01b0\u1ee3c l\u01b0u \u0111\u1ec7m (Cache Miss), CDN ph\u1ea3i quay l\u1ea1i l\u1ea5y d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c. N\u1ebfu m\u00e1y ch\u1ee7 g\u1ed1c ch\u1eadm, TTFB v\u1eabn s\u1ebd cao. Ngo\u00e0i ra, vi\u1ec7c thi\u1ebft l\u1eadp DNS kh\u00f4ng chu\u1ea9n khi d\u00f9ng CDN c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cloudflare-co-giup-giam-TTFB-tai-Viet-Nam-khong\"><\/span>Cloudflare c\u00f3 gi\u00fap gi\u1ea3m TTFB t\u1ea1i Vi\u1ec7t Nam kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3, Cloudflare c\u00f3 th\u1ec3 gi\u00fap \u00edch nh\u1edd t\u00ednh n\u0103ng l\u01b0u \u0111\u1ec7m bi\u00ean (Edge Caching). Tuy nhi\u00ean, v\u1edbi c\u00e1c g\u00f3i mi\u1ec5n ph\u00ed, \u0111\u00f4i khi d\u1eef li\u1ec7u b\u1ecb \u0111\u1ecbnh tuy\u1ebfn qua c\u00e1c qu\u1ed1c gia l\u00e2n c\u1eadn nh\u01b0 Singapore thay v\u00ec \u1edf Vi\u1ec7t Nam, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng l\u00e0m gi\u1ea3m TTFB nhi\u1ec1u nh\u01b0 mong \u0111\u1ee3i. \u0110\u1ec3 t\u1ed1i \u01b0u nh\u1ea5t, vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 n\u1ed9i \u0111\u1ecba v\u1eabn mang l\u1ea1i hi\u1ec7u qu\u1ea3 tr\u1ef1c ti\u1ebfp h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hosting-gia-re-co-anh-huong-nhieu-den-TTFB-khong\"><\/span>Hosting gi\u00e1 r\u1ebb c\u00f3 \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn TTFB kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>R\u1ea5t nhi\u1ec1u. C\u00e1c nh\u00e0 cung c\u1ea5p hosting gi\u00e1 c\u1ef1c th\u1ea5p th\u01b0\u1eddng s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng c\u0169 v\u00e0 h\u1ea1n ch\u1ebf t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd c\u1ee7a CPU. \u0110i\u1ec1u n\u00e0y tr\u1ef1c ti\u1ebfp k\u00e9o d\u00e0i giai \u0111o\u1ea1n &#8220;Server Processing&#8221;, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1edd \u0111\u1ee3i l\u00e2u h\u01a1n tr\u01b0\u1edbc khi nh\u1eadn \u0111\u01b0\u1ee3c byte d\u1eef li\u1ec7u \u0111\u1ea7u ti\u00ean.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ket-luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a <strong>Time To First Byte (TTFB)<\/strong> l\u00e0 m\u1ed9t h\u00e0nh tr\u00ecnh li\u00ean t\u1ee5c, \u0111\u00f2i h\u1ecfi s\u1ef1 ph\u1ed1i h\u1ee3p nh\u1ecbp nh\u00e0ng gi\u1eefa h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u00e0 k\u1ef9 thu\u1eadt l\u1eadp tr\u00ecnh website. B\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u th\u1eddi gian ch\u1edd \u0111\u1ee3i ban \u0111\u1ea7u, b\u1ea1n kh\u00f4ng ch\u1ec9 l\u00e0m h\u00e0i l\u00f2ng c\u00e1c thu\u1eadt to\u00e1n c\u1ee7a Google m\u00e0 quan tr\u1ecdng h\u01a1n l\u00e0 gi\u1eef ch\u00e2n \u0111\u01b0\u1ee3c kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng c\u1ee7a m\u00ecnh.<\/p>\n<p>N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi ch\u1ec9 s\u1ed1 TTFB \u0111\u1ecf r\u1ef1c tr\u00ean PageSpeed Insights, h\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c xem x\u00e9t l\u1ea1i d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef. M\u1ed9t h\u1ec7 th\u1ed1ng m\u00e1y ch\u1ee7 m\u1ea1nh m\u1ebd, \u1ed5n \u0111\u1ecbnh nh\u01b0 gi\u1ea3i ph\u00e1p VPS t\u1ea1i <strong>InterData<\/strong> s\u1ebd l\u00e0 b\u01b0\u1edbc \u0111\u1ec7m v\u1eefng ch\u1eafc nh\u1ea5t \u0111\u1ec3 website c\u1ee7a b\u1ea1n b\u1ee9t ph\u00e1 v\u1ec1 t\u1ed1c \u0111\u1ed9. H\u00e3y th\u1ef1c hi\u1ec7n ki\u1ec3m tra v\u00e0 t\u1ed1i \u01b0u ngay h\u00f4m nay \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o website lu\u00f4n \u1edf tr\u1ea1ng th\u00e1i s\u1eb5n s\u00e0ng ph\u1ee5c v\u1ee5 t\u1ed1t nh\u1ea5t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Time To First Byte (TTFB) l\u00e0 ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng th\u1eddi gian t\u1eeb khi tr\u00ecnh duy\u1ec7t g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 cho \u0111\u1ebfn khi nh\u1eadn \u0111\u01b0\u1ee3c byte d\u1eef li\u1ec7u \u0111\u1ea7u ti\u00ean. T\u1ed1i \u01b0u TTFB l\u00e0 b\u01b0\u1edbc \u0111i ti\u00ean quy\u1ebft \u0111\u1ec3 c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng SEO v\u00e0 gia t\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. B\u00e0i vi\u1ebft<\/p>\n","protected":false},"author":11,"featured_media":38695,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-38671","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=38671"}],"version-history":[{"count":3,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38671\/revisions"}],"predecessor-version":[{"id":38696,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38671\/revisions\/38696"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/38695"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=38671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=38671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=38671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}