{"id":26521,"date":"2025-04-02T09:17:08","date_gmt":"2025-04-02T02:17:08","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=26521"},"modified":"2025-04-02T09:19:39","modified_gmt":"2025-04-02T02:19:39","slug":"websocket-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/websocket-la-gi\/","title":{"rendered":"Websocket l\u00e0 g\u00ec? C\u00e1ch ho\u1ea1t \u0111\u1ed9ng, \u01b0u-nh\u01b0\u1ee3c \u0111i\u1ec3m, so s\u00e1nh HTTP"},"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\/websocket-la-gi\/#Websocket-la-gi\" >Websocket 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\/websocket-la-gi\/#Websocket-hoat-dong-nhu-the-nao\" >Websocket ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Websocket-dung-de-lam-gi\" >Websocket d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Ung-dung-chat-va-nhan-tin-thoi-gian-thuc\" >\u1ee8ng d\u1ee5ng chat v\u00e0 nh\u1eafn tin th\u1eddi gian th\u1ef1c<\/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\/websocket-la-gi\/#Game-truc-tuyen\" >Game tr\u1ef1c tuy\u1ebfn<\/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\/websocket-la-gi\/#Ung-dung-cong-tac-truc-tuyen\" >\u1ee8ng d\u1ee5ng c\u1ed9ng t\u00e1c tr\u1ef1c tuy\u1ebfn<\/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\/websocket-la-gi\/#Bang-dieu-khien-va-giam-sat-thoi-gian-thuc\" >B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Thong-bao-day-Push-Notifications\" >Th\u00f4ng b\u00e1o \u0111\u1ea9y (Push Notifications)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Ung-dung-Internet-of-Things-IoT\" >\u1ee8ng d\u1ee5ng Internet of Things (IoT)<\/a><\/li><\/ul><\/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\/websocket-la-gi\/#Uu-diem-va-nhuoc-diem-cua-websocket\" >\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a websocket<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Uu-diem-cua-websocket\" >\u01afu \u0111i\u1ec3m c\u1ee7a websocket<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Nhuoc-diem-cua-websocket\" >Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a websocket<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Ket-noi-HTTP-so-voi-WebSocket\" >K\u1ebft n\u1ed1i HTTP so v\u1edbi WebSocket<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Nhung-thu-vien-nao-co-san-de-trien-khai-WebSocket\" >Nh\u1eefng th\u01b0 vi\u1ec7n n\u00e0o c\u00f3 s\u1eb5n \u0111\u1ec3 tri\u1ec3n khai WebSocket?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Thu-vien-cho-trinh-duyet-Client-side\" >Th\u01b0 vi\u1ec7n cho tr\u00ecnh duy\u1ec7t (Client-side)<\/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\/websocket-la-gi\/#Thu-vien-cho-Nodejs-Server-side\" >Th\u01b0 vi\u1ec7n cho Node.js (Server-side)<\/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\/websocket-la-gi\/#Thu-vien-cho-Python-Server-side\" >Th\u01b0 vi\u1ec7n cho Python (Server-side)<\/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\/websocket-la-gi\/#Thu-vien-cho-Java-Server-side\" >Th\u01b0 vi\u1ec7n cho Java (Server-side)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/#Cac-thu-vien-khac\" >C\u00e1c th\u01b0 vi\u1ec7n kh\u00e1c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>WebSocket l\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng hai chi\u1ec1u cho ph\u00e9p thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i li\u00ean t\u1ee5c gi\u1eefa client v\u00e0 server, mang l\u1ea1i kh\u1ea3 n\u0103ng giao ti\u1ebfp th\u1eddi gian th\u1ef1c v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi HTTP truy\u1ec1n th\u1ed1ng. B\u00e0i vi\u1ebft s\u1ebd gi\u1ea3i th\u00edch c\u00e1ch WebSocket ho\u1ea1t \u0111\u1ed9ng, kh\u00e1m ph\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf nh\u01b0 chat, game tr\u1ef1c tuy\u1ebfn v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/internet-of-things\/\">IoT<\/a>, ph\u00e2n t\u00edch \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m, so s\u00e1nh v\u1edbi HTTP, \u0111\u1ed3ng th\u1eddi gi\u1edbi thi\u1ec7u c\u00e1c th\u01b0 vi\u1ec7n ph\u1ed5 bi\u1ebfn \u0111\u1ec3 tri\u1ec3n khai WebSocket tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Websocket-la-gi\"><\/span>Websocket l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/websocket-la-gi\/\">Websocket<\/a> l\u00e0 m\u1ed9t giao th\u1ee9c truy\u1ec1n th\u00f4ng m\u1ea1nh m\u1ebd, m\u1edf ra k\u00eanh giao ti\u1ebfp hai chi\u1ec1u (full-duplex) v\u00e0 duy tr\u00ec k\u1ebft n\u1ed1i li\u00ean t\u1ee5c (persistent) gi\u1eefa tr\u00ecnh duy\u1ec7t web (client) v\u00e0 m\u00e1y ch\u1ee7 (server) th\u00f4ng qua m\u1ed9t k\u1ebft n\u1ed1i TCP duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n so v\u1edbi giao th\u1ee9c HTTP truy\u1ec1n th\u1ed1ng.<\/p>\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 HTTP ho\u1ea1t \u0111\u1ed9ng theo m\u00f4 h\u00ecnh y\u00eau c\u1ea7u-ph\u1ea3n h\u1ed3i (request-response) m\u00e0 client v\u00e0 server ph\u1ea3i li\u00ean t\u1ee5c trao \u0111\u1ed5i \u0111\u1ec3 l\u1ea5y th\u00f4ng tin m\u1edbi, Websocket cho ph\u00e9p c\u1ea3 hai b\u00ean ch\u1ee7 \u0111\u1ed9ng g\u1eedi d\u1eef li\u1ec7u cho nhau b\u1ea5t k\u1ef3 l\u00fac n\u00e0o. Nh\u1edd v\u1eady, n\u00f3 t\u1ea1o ra tr\u1ea3i nghi\u1ec7m th\u1eddi gian th\u1ef1c (real-time) m\u01b0\u1ee3t m\u00e0 cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p>\u0110\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i Websocket, tr\u00ecnh duy\u1ec7t s\u1ebd g\u1eedi m\u1ed9t y\u00eau c\u1ea7u handshake \u0111\u1eb7c bi\u1ec7t \u0111\u1ebfn m\u00e1y ch\u1ee7, y\u00eau c\u1ea7u &#8220;n\u00e2ng c\u1ea5p&#8221; giao th\u1ee9c t\u1eeb HTTP l\u00ean Websocket. N\u1ebfu m\u00e1y ch\u1ee7 ch\u1ea5p nh\u1eadn, m\u1ed9t k\u1ebft n\u1ed1i li\u00ean t\u1ee5c s\u1ebd \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, s\u1eb5n s\u00e0ng cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u hai chi\u1ec1u.<\/p>\n<p>Sau khi k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i d\u01b0\u1edbi d\u1ea1ng c\u00e1c &#8220;khung&#8221; (frame), c\u00f3 th\u1ec3 ch\u1ee9a v\u0103n b\u1ea3n (UTF-8) ho\u1eb7c d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m thi\u1ec3u overhead so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng nhi\u1ec1u k\u1ebft n\u1ed1i HTTP ri\u00eang l\u1ebb.<\/p>\n<figure id=\"attachment_26523\" aria-describedby=\"caption-attachment-26523\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Websocket.jpg\" alt=\"Websocket\" width=\"800\" height=\"420\" class=\"size-full wp-image-26523\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Websocket.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Websocket-300x158.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Websocket-768x403.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Websocket-750x394.jpg 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-26523\" class=\"wp-caption-text\">Websocket<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Websocket-hoat-dong-nhu-the-nao\"><\/span>Websocket ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Websocket ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp m\u1ed9t k\u1ebft n\u1ed1i li\u00ean t\u1ee5c, hai chi\u1ec1u gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 m\u00e1y ch\u1ee7 th\u00f4ng qua m\u1ed9t quy tr\u00ecnh &#8220;b\u1eaft tay&#8221; ban \u0111\u1ea7u. Sau khi k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i theo c\u1ea3 hai h\u01b0\u1edbng m\u1ed9t c\u00e1ch \u0111\u1ed3ng th\u1eddi m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i thi\u1ebft l\u1eadp l\u1ea1i k\u1ebft n\u1ed1i cho m\u1ed7i l\u1ea7n giao ti\u1ebfp.<\/p>\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y b\u1eaft \u0111\u1ea7u khi tr\u00ecnh duy\u1ec7t (client) g\u1eedi m\u1ed9t y\u00eau c\u1ea7u HTTP \u0111\u1eb7c bi\u1ec7t \u0111\u1ebfn m\u00e1y ch\u1ee7. Y\u00eau c\u1ea7u n\u00e0y bao g\u1ed3m m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/header-la-gi\/\">header<\/a> &#8220;Upgrade&#8221; ch\u1ec9 \u0111\u1ecbnh giao th\u1ee9c mong mu\u1ed1n l\u00e0 &#8220;websocket&#8221;. \u0110\u00e2y l\u00e0 b\u01b0\u1edbc &#8220;b\u1eaft tay&#8221; (handshake) \u0111\u1ec3 th\u1ed1ng nh\u1ea5t chuy\u1ec3n \u0111\u1ed5i giao th\u1ee9c.<\/p>\n<p>N\u1ebfu m\u00e1y ch\u1ee7 h\u1ed7 tr\u1ee3 Websocket, n\u00f3 s\u1ebd ph\u1ea3n h\u1ed3i b\u1eb1ng m\u1ed9t m\u00e3 tr\u1ea1ng th\u00e1i HTTP 101 &#8220;Switching Protocols&#8221;. Ph\u1ea3n h\u1ed3i n\u00e0y x\u00e1c nh\u1eadn r\u1eb1ng m\u00e1y ch\u1ee7 \u0111\u00e3 \u0111\u1ed3ng \u00fd n\u00e2ng c\u1ea5p k\u1ebft n\u1ed1i l\u00ean giao th\u1ee9c Websocket. Sau b\u01b0\u1edbc n\u00e0y, k\u1ebft n\u1ed1i HTTP ban \u0111\u1ea7u s\u1ebd \u0111\u01b0\u1ee3c thay th\u1ebf b\u1eb1ng k\u1ebft n\u1ed1i Websocket.<\/p>\n<p>Sau khi k\u1ebft n\u1ed1i Websocket \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp th\u00e0nh c\u00f4ng, m\u1ed9t k\u00eanh giao ti\u1ebfp li\u00ean t\u1ee5c s\u1ebd \u0111\u01b0\u1ee3c m\u1edf ra. L\u00fac n\u00e0y, c\u1ea3 client v\u00e0 server \u0111\u1ec1u c\u00f3 th\u1ec3 ch\u1ee7 \u0111\u1ed9ng g\u1eedi d\u1eef li\u1ec7u cho nhau b\u1ea5t k\u1ef3 l\u00fac n\u00e0o m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1edd \u0111\u1ee3i y\u00eau c\u1ea7u t\u1eeb ph\u00eda b\u00ean kia, t\u1ea1o n\u00ean giao ti\u1ebfp full-duplex.<\/p>\n<p>D\u1eef li\u1ec7u trong k\u1ebft n\u1ed1i Websocket \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i d\u01b0\u1edbi d\u1ea1ng c\u00e1c &#8220;khung&#8221; (frame). C\u00e1c frame n\u00e0y ch\u1ee9a th\u00f4ng tin v\u1ec1 lo\u1ea1i d\u1eef li\u1ec7u (v\u0103n b\u1ea3n ho\u1eb7c nh\u1ecb ph\u00e2n) v\u00e0 n\u1ed9i dung th\u1ef1c t\u1ebf. Vi\u1ec7c s\u1eed d\u1ee5ng frame gi\u00fap qu\u1ea3n l\u00fd v\u00e0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p>K\u1ebft n\u1ed1i Websocket s\u1ebd duy tr\u00ec tr\u1ea1ng th\u00e1i m\u1edf cho \u0111\u1ebfn khi m\u1ed9t trong hai b\u00ean (client ho\u1eb7c server) ch\u1ee7 \u0111\u1ed9ng g\u1eedi m\u1ed9t frame \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 \u0111\u00f3ng k\u1ebft n\u1ed1i. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u00e0i nguy\u00ean so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng nh\u01b0 HTTP polling.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Websocket-dung-de-lam-gi\"><\/span>Websocket d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Websocket m\u1edf ra c\u00e1nh c\u1eeda cho nhi\u1ec1u <a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">\u1ee9ng d\u1ee5ng web<\/a> th\u1eddi gian th\u1ef1c, n\u01a1i m\u00e0 vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u t\u1ee9c th\u00ec gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 tr\u00ecnh duy\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Nh\u1edd kh\u1ea3 n\u0103ng giao ti\u1ebfp hai chi\u1ec1u li\u00ean t\u1ee5c, Websocket mang l\u1ea1i tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0 v\u00e0 t\u01b0\u01a1ng t\u00e1c cao cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung-dung-chat-va-nhan-tin-thoi-gian-thuc\"><\/span>\u1ee8ng d\u1ee5ng chat v\u00e0 nh\u1eafn tin th\u1eddi gian th\u1ef1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a Websocket l\u00e0 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng chat v\u00e0 nh\u1eafn tin th\u1eddi gian th\u1ef1c. V\u1edbi Websocket, tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi v\u00e0 nh\u1eadn ngay l\u1eadp t\u1ee9c gi\u1eefa nh\u1eefng ng\u01b0\u1eddi d\u00f9ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ea3i l\u1ea1i trang hay th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u li\u00ean t\u1ee5c \u0111\u1ebfn m\u00e1y ch\u1ee7. V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh l\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng chat tr\u1ef1c tuy\u1ebfn, h\u1ec7 th\u1ed1ng h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng real-time.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Game-truc-tuyen\"><\/span>Game tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong l\u0129nh v\u1ef1c game tr\u1ef1c tuy\u1ebfn, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c game nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i, Websocket \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ed3ng b\u1ed9 h\u00f3a tr\u1ea1ng th\u00e1i game gi\u1eefa t\u1ea5t c\u1ea3 ng\u01b0\u1eddi ch\u01a1i. M\u1ecdi h\u00e0nh \u0111\u1ed9ng c\u1ee7a m\u1ed9t ng\u01b0\u1eddi ch\u01a1i s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i ngay l\u1eadp t\u1ee9c \u0111\u1ebfn nh\u1eefng ng\u01b0\u1eddi kh\u00e1c, t\u1ea1o n\u00ean tr\u1ea3i nghi\u1ec7m ch\u01a1i game li\u1ec1n m\u1ea1ch v\u00e0 c\u00f4ng b\u1eb1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung-dung-cong-tac-truc-tuyen\"><\/span>\u1ee8ng d\u1ee5ng c\u1ed9ng t\u00e1c tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Websocket l\u00e0 n\u1ec1n t\u1ea3ng l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ed9ng t\u00e1c tr\u1ef1c tuy\u1ebfn, n\u01a1i nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng c\u00f9ng l\u00e0m vi\u1ec7c tr\u00ean m\u1ed9t t\u00e0i li\u1ec7u, b\u1ea3ng t\u00ednh ho\u1eb7c d\u1ef1 \u00e1n. B\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi m\u1ed9t ng\u01b0\u1eddi d\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb ngay l\u1eadp t\u1ee9c cho nh\u1eefng ng\u01b0\u1eddi kh\u00e1c, gi\u00fap t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u00e0m vi\u1ec7c nh\u00f3m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bang-dieu-khien-va-giam-sat-thoi-gian-thuc\"><\/span>B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n (dashboard) v\u00e0 h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c s\u1eed d\u1ee5ng Websocket \u0111\u1ec3 hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u m\u1edbi nh\u1ea5t m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c. V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c t\u00e0i ch\u00ednh, Websocket \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 c\u1eadp nh\u1eadt gi\u00e1 c\u1ed5 phi\u1ebfu, t\u1ef7 gi\u00e1 ngo\u1ea1i t\u1ec7; trong l\u0129nh v\u1ef1c IoT, n\u00f3 gi\u00fap theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thong-bao-day-Push-Notifications\"><\/span>Th\u00f4ng b\u00e1o \u0111\u1ea9y (Push Notifications)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Websocket cho ph\u00e9p m\u00e1y ch\u1ee7 ch\u1ee7 \u0111\u1ed9ng g\u1eedi th\u00f4ng b\u00e1o \u0111\u1ebfn tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng m\u00e0 kh\u00f4ng c\u1ea7n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 h\u00e0nh \u0111\u1ed9ng n\u00e0o. \u0110i\u1ec1u n\u00e0y r\u1ea5t h\u1eefu \u00edch cho vi\u1ec7c g\u1eedi th\u00f4ng b\u00e1o v\u1ec1 tin t\u1ee9c, c\u1eadp nh\u1eadt tr\u1ea1ng th\u00e1i, ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n quan tr\u1ecdng m\u1ed9t c\u00e1ch k\u1ecbp th\u1eddi.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung-dung-Internet-of-Things-IoT\"><\/span>\u1ee8ng d\u1ee5ng Internet of Things (IoT)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong b\u1ed1i c\u1ea3nh IoT, Websocket t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c giao ti\u1ebfp li\u00ean t\u1ee5c v\u00e0 hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh v\u00e0 m\u00e1y ch\u1ee7 trung t\u00e2m. D\u1eef li\u1ec7u t\u1eeb c\u00e1c c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i real-time \u0111\u1ebfn server \u0111\u1ec3 x\u1eed l\u00fd v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Uu-diem-va-nhuoc-diem-cua-websocket\"><\/span>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a websocket<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Uu-diem-cua-websocket\"><\/span>\u01afu \u0111i\u1ec3m c\u1ee7a websocket<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Giao ti\u1ebfp th\u1eddi gian th\u1ef1c (Real-time Communication):<\/strong> Websocket cho ph\u00e9p truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u ngay l\u1eadp t\u1ee9c gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 tr\u00ecnh duy\u1ec7t. \u0110i\u1ec1u n\u00e0y c\u1ef1c k\u1ef3 h\u1eefu \u00edch cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 chat tr\u1ef1c tuy\u1ebfn, c\u1eadp nh\u1eadt tin t\u1ee9c tr\u1ef1c ti\u1ebfp, ho\u1eb7c hi\u1ec3n th\u1ecb th\u00f4ng tin th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n theo th\u1eddi gian th\u1ef1c, mang l\u1ea1i <a href=\"https:\/\/interdata.vn\/blog\/ux-la-gi\/\">tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a> t\u1ee9c th\u00ec.<\/li>\n<li><strong>Giao ti\u1ebfp hai chi\u1ec1u (Full-Duplex Communication):<\/strong> Kh\u00e1c v\u1edbi HTTP, Websocket cho ph\u00e9p c\u1ea3 m\u00e1y ch\u1ee7 v\u00e0 tr\u00ecnh duy\u1ec7t \u0111\u1ed3ng th\u1eddi g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho c\u00e1c \u1ee9ng d\u1ee5ng t\u01b0\u01a1ng t\u00e1c cao nh\u01b0 game online, n\u01a1i m\u00e0 c\u1ea3 ng\u01b0\u1eddi ch\u01a1i v\u00e0 m\u00e1y ch\u1ee7 c\u1ea7n li\u00ean t\u1ee5c trao \u0111\u1ed5i th\u00f4ng tin m\u00e0 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>K\u1ebft n\u1ed1i li\u00ean t\u1ee5c (Persistent Connection):<\/strong> M\u1ed9t khi k\u1ebft n\u1ed1i Websocket \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c duy tr\u00ec cho \u0111\u1ebfn khi m\u1ed9t trong hai b\u00ean ch\u1ee7 \u0111\u1ed9ng \u0111\u00f3ng. \u0110i\u1ec1u n\u00e0y gi\u00fap lo\u1ea1i b\u1ecf overhead c\u1ee7a vi\u1ec7c thi\u1ebft l\u1eadp v\u00e0 \u0111\u00f3ng k\u1ebft n\u1ed1i cho m\u1ed7i l\u1ea7n giao ti\u1ebfp, ti\u1ebft ki\u1ec7m t\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u.<\/li>\n<li><strong>\u0110\u1ed9 tr\u1ec5 th\u1ea5p (Low <a href=\"https:\/\/interdata.vn\/blog\/latency-la-gi\/\">Latency<\/a>):<\/strong> Nh\u1edd k\u1ebft n\u1ed1i li\u00ean t\u1ee5c v\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u ngay l\u1eadp t\u1ee9c, Websocket gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng nh\u01b0 HTTP polling. \u0110\u00e2y l\u00e0 m\u1ed9t \u01b0u \u0111i\u1ec3m quan tr\u1ecdng cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m v\u1ec1 th\u1eddi gian nh\u01b0 game, video call, v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng t\u00e0i ch\u00ednh.<\/li>\n<li><strong>Hi\u1ec7u qu\u1ea3 <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> (Bandwidth Efficiency):<\/strong> Vi\u1ec7c duy tr\u00ec m\u1ed9t k\u1ebft n\u1ed1i duy nh\u1ea5t v\u00e0 ch\u1ec9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft gi\u00fap Websocket ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng so v\u1edbi vi\u1ec7c li\u00ean t\u1ee5c g\u1eedi c\u00e1c y\u00eau c\u1ea7u HTTP. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 l\u01b0\u1ee3ng l\u1edbn ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c truy\u1ec1n t\u1ea3i nhi\u1ec1u d\u1eef li\u1ec7u.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng (Scalability):<\/strong> V\u1edbi ki\u1ebfn tr\u00fac h\u01b0\u1edbng s\u1ef1 ki\u1ec7n (event-driven) v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd nhi\u1ec1u k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi, Websocket l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u cao v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng l\u1edbn ng\u01b0\u1eddi d\u00f9ng v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 tr\u00ecnh duy\u1ec7t t\u1ed1t (Good Browser Support):<\/strong> H\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t web hi\u1ec7n \u0111\u1ea1i ng\u00e0y nay \u0111\u1ec1u h\u1ed7 tr\u1ee3 giao th\u1ee9c Websocket. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng tri\u1ec3n khai c\u00e1c \u1ee9ng d\u1ee5ng real-time m\u00e0 kh\u00f4ng c\u1ea7n lo l\u1eafng v\u1ec1 v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch tr\u00ecnh duy\u1ec7t.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Nhuoc-diem-cua-websocket\"><\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a websocket<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Y\u00eau c\u1ea7u server h\u1ed7 tr\u1ee3 giao th\u1ee9c Websocket:<\/strong> \u0110\u1ec3 s\u1eed d\u1ee5ng Websocket, m\u00e1y ch\u1ee7 c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh v\u00e0 c\u00f3 th\u01b0 vi\u1ec7n h\u1ed7 tr\u1ee3 giao th\u1ee9c n\u00e0y. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u00f2i h\u1ecfi th\u00eam c\u00f4ng s\u1ee9c v\u00e0 ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n so v\u1edbi vi\u1ec7c ch\u1ec9 s\u1eed d\u1ee5ng giao th\u1ee9c HTTP truy\u1ec1n th\u1ed1ng tr\u00ean c\u00e1c server th\u00f4ng th\u01b0\u1eddng.<\/li>\n<li><strong>V\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch v\u1edbi m\u1ed9t s\u1ed1 t\u01b0\u1eddng l\u1eeda v\u00e0 proxy:<\/strong> M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng t\u01b0\u1eddng l\u1eeda v\u00e0 m\u00e1y ch\u1ee7 proxy c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng h\u1ed7 tr\u1ee3 ho\u1eb7c ch\u1eb7n c\u00e1c k\u1ebft n\u1ed1i Websocket. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i ho\u1eb7c l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a \u1ee9ng d\u1ee5ng trong m\u1ed9t s\u1ed1 m\u00f4i tr\u01b0\u1eddng m\u1ea1ng nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li><strong>Thi\u1ebfu c\u01a1 ch\u1ebf ph\u1ee5c h\u1ed3i k\u1ebft n\u1ed1i t\u00edch h\u1ee3p s\u1eb5n:<\/strong> N\u1ebfu k\u1ebft n\u1ed1i Websocket b\u1ecb gi\u00e1n \u0111o\u1ea1n do s\u1ef1 c\u1ed1 m\u1ea1ng ho\u1eb7c l\u1ed7i server, \u1ee9ng d\u1ee5ng c\u1ea7n ph\u1ea3i t\u1ef1 x\u1eed l\u00fd logic \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 thi\u1ebft l\u1eadp l\u1ea1i k\u1ebft n\u1ed1i. Vi\u1ec7c n\u00e0y \u0111\u00f2i h\u1ecfi nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea3i ch\u1ee7 \u0111\u1ed9ng x\u00e2y d\u1ef1ng c\u00e1c c\u01a1 ch\u1ebf x\u1eed l\u00fd l\u1ed7i.<\/li>\n<li><strong>C\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng web ch\u1ec9 c\u1ea7n giao ti\u1ebfp theo m\u00f4 h\u00ecnh y\u00eau c\u1ea7u-ph\u1ea3n h\u1ed3i \u0111\u01a1n gi\u1ea3n, vi\u1ec7c s\u1eed d\u1ee5ng Websocket c\u00f3 th\u1ec3 l\u00e0m t\u0103ng th\u00eam \u0111\u1ed9 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 tri\u1ec3n khai.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p:<\/strong> V\u00ec Websocket duy tr\u00ec m\u1ed9t k\u1ebft n\u1ed1i li\u00ean t\u1ee5c, vi\u1ec7c qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i c\u1ee7a nhi\u1ec1u k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi tr\u00ean server c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 l\u01b0\u1ee3ng l\u1edbn ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>V\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t c\u1ea9n th\u1eadn:<\/strong> M\u1eb7c d\u00f9 Websocket c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt b\u1eb1ng TLS\/SSL (th\u00f4ng qua giao th\u1ee9c WSS), vi\u1ec7c tri\u1ec3n khai b\u1ea3o m\u1eadt kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. Do \u0111\u00f3, c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc b\u1ea3o m\u1eadt khi s\u1eed d\u1ee5ng Websocket.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t c\u0169:<\/strong> M\u1eb7c d\u00f9 h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 Websocket, m\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t c\u0169 h\u01a1n c\u00f3 th\u1ec3 kh\u00f4ng h\u1ed7 tr\u1ee3 ho\u1eb7c h\u1ed7 tr\u1ee3 ch\u01b0a \u0111\u1ea7y \u0111\u1ee7, \u0111i\u1ec1u n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc khi ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng h\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ng\u01b0\u1eddi d\u00f9ng v\u1edbi nhi\u1ec1u phi\u00ean b\u1ea3n tr\u00ecnh duy\u1ec7t kh\u00e1c nhau.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ket-noi-HTTP-so-voi-WebSocket\"><\/span>K\u1ebft n\u1ed1i HTTP so v\u1edbi WebSocket<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table style=\"width: 100%; border-collapse: collapse; border: 2px solid blue; text-align: left;\">\n<thead>\n<tr style=\"background-color: blue; color: white;\">\n<th style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #ffffff;\">\u0110\u1eb7c \u0111i\u1ec3m<\/span><\/th>\n<th style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #ffffff;\">HTTP<\/span><\/th>\n<th style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #ffffff;\">WebSocket<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody style=\"background-color: white;\">\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">M\u00f4 h\u00ecnh giao ti\u1ebfp<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Y\u00eau c\u1ea7u &#8211; Ph\u1ea3n h\u1ed3i (Request &#8211; Response), b\u00e1n song c\u00f4ng (half-duplex)<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Hai chi\u1ec1u \u0111\u1ed3ng th\u1eddi (Bi-directional), to\u00e0n song c\u00f4ng (full-duplex)<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Lo\u1ea1i k\u1ebft n\u1ed1i<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Kh\u00f4ng tr\u1ea1ng th\u00e1i (Stateless), ng\u1eafn h\u1ea1n (short-lived)<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">C\u00f3 tr\u1ea1ng th\u00e1i (Stateful), d\u00e0i h\u1ea1n (long-lived), li\u00ean t\u1ee5c (persistent)<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">S\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Th\u01b0\u1eddng thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i m\u1edbi cho m\u1ed7i y\u00eau c\u1ea7u<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Thi\u1ebft l\u1eadp m\u1ed9t k\u1ebft n\u1ed1i duy nh\u1ea5t cho nhi\u1ec1u l\u1ea7n giao ti\u1ebfp<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">\u0110\u1ed9 tr\u1ec5<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Th\u01b0\u1eddng cao h\u01a1n do ph\u1ea3i thi\u1ebft l\u1eadp l\u1ea1i k\u1ebft n\u1ed1i cho m\u1ed7i y\u00eau c\u1ea7u<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 sau khi k\u1ebft n\u1ed1i ban \u0111\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Truy\u1ec1n d\u1eef li\u1ec7u<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Ch\u1ee7 y\u1ebfu l\u00e0 client y\u00eau c\u1ea7u, server tr\u1ea3 l\u1eddi<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">C\u1ea3 client v\u00e0 server \u0111\u1ec1u c\u00f3 th\u1ec3 ch\u1ee7 \u0111\u1ed9ng g\u1eedi d\u1eef li\u1ec7u b\u1ea5t k\u1ef3 l\u00fac n\u00e0o<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Overhead<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">C\u00f3 th\u1ec3 cao h\u01a1n do header \u0111\u01b0\u1ee3c g\u1eedi trong m\u1ed7i y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Th\u1ea5p h\u01a1n sau khi thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i ban \u0111\u1ea7u, ch\u1ec9 truy\u1ec1n d\u1eef li\u1ec7u payload<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">S\u1eed d\u1ee5ng ch\u00ednh<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">Truy c\u1eadp <a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a>, t\u1ea3i t\u00e0i nguy\u00ean, c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng y\u00eau c\u1ea7u c\u1eadp nh\u1eadt real-time<\/span><\/td>\n<td style=\"border: 1px solid blue; padding: 10px;\"><span style=\"color: #000000;\">\u1ee8ng d\u1ee5ng chat, game online, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n real-time, th\u00f4ng b\u00e1o \u0111\u1ea9y<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Gi\u1ea3i th\u00edch th\u00eam:<\/strong><\/p>\n<p>HTTP l\u00e0 giao th\u1ee9c n\u1ec1n t\u1ea3ng c\u1ee7a World Wide Web, ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh client g\u1eedi y\u00eau c\u1ea7u v\u00e0 server tr\u1ea3 l\u1eddi. M\u1ed7i y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i l\u00e0 m\u1ed9t giao d\u1ecbch ri\u00eang bi\u1ec7t, v\u00e0 k\u1ebft n\u1ed1i th\u01b0\u1eddng b\u1ecb \u0111\u00f3ng sau khi ho\u00e0n th\u00e0nh. \u0110i\u1ec1u n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/web-tinh-la-gi\/\">trang web t\u0129nh<\/a> ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 d\u1eef li\u1ec7u kh\u00f4ng c\u1ea7n c\u1eadp nh\u1eadt li\u00ean t\u1ee5c.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, WebSocket \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n giao ti\u1ebfp real-time. Sau khi thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i ban \u0111\u1ea7u, m\u1ed9t k\u00eanh giao ti\u1ebfp li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c m\u1edf ra, cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i theo c\u1ea3 hai h\u01b0\u1edbng m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y l\u00e0m cho WebSocket tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng t\u01b0\u01a1ng t\u00e1c cao v\u00e0 \u0111\u00f2i h\u1ecfi c\u1eadp nh\u1eadt d\u1eef li\u1ec7u t\u1ee9c th\u00ec.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nhung-thu-vien-nao-co-san-de-trien-khai-WebSocket\"><\/span>Nh\u1eefng th\u01b0 vi\u1ec7n n\u00e0o c\u00f3 s\u1eb5n \u0111\u1ec3 tri\u1ec3n khai WebSocket?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f3 r\u1ea5t nhi\u1ec1u th\u01b0 vi\u1ec7n m\u1ea1nh m\u1ebd v\u00e0 \u0111a d\u1ea1ng h\u1ed7 tr\u1ee3 vi\u1ec7c tri\u1ec3n khai giao th\u1ee9c Websocket cho c\u1ea3 ph\u00eda m\u00e1y ch\u1ee7 (server-side) v\u00e0 ph\u00eda tr\u00ecnh duy\u1ec7t (client-side). Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c th\u01b0 vi\u1ec7n n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 cho ph\u00e9p b\u1ea1n t\u1eadp trung v\u00e0o logic nghi\u1ec7p v\u1ee5 c\u1ee7a \u1ee9ng d\u1ee5ng real-time.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thu-vien-cho-trinh-duyet-Client-side\"><\/span>Th\u01b0 vi\u1ec7n cho tr\u00ecnh duy\u1ec7t (Client-side)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi ph\u00eda tr\u00ecnh duy\u1ec7t, WebSocket API \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t web hi\u1ec7n \u0111\u1ea1i. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp API n\u00e0y \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd k\u1ebft n\u1ed1i Websocket b\u1eb1ng JavaScript. Ngo\u00e0i ra, c\u00e1c th\u01b0 vi\u1ec7n nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/socket-cpu-la-gi\/\">Socket<\/a>.IO cung c\u1ea5p m\u1ed9t l\u1edbp tr\u1eebu t\u01b0\u1ee3ng cao h\u01a1n, gi\u00fap x\u1eed l\u00fd c\u00e1c tr\u01b0\u1eddng h\u1ee3p k\u1ebft n\u1ed1i b\u1ecb gi\u00e1n \u0111o\u1ea1n v\u00e0 h\u1ed7 tr\u1ee3 c\u00e1c fallback mechanism cho c\u00e1c tr\u00ecnh duy\u1ec7t c\u0169 h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thu-vien-cho-Nodejs-Server-side\"><\/span>Th\u01b0 vi\u1ec7n cho Node.js (Server-side)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong m\u00f4i tr\u01b0\u1eddng <a href=\"https:\/\/interdata.vn\/blog\/node-js-la-gi\/\">Node.js<\/a>, ws l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n Websocket r\u1ea5t ph\u1ed5 bi\u1ebfn, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi hi\u1ec7u su\u1ea5t cao v\u00e0 t\u00ednh linh ho\u1ea1t. Socket.IO c\u0169ng l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi cho Node.js, cung c\u1ea5p nhi\u1ec1u t\u00ednh n\u0103ng n\u00e2ng cao nh\u01b0 t\u1ef1 \u0111\u1ed9ng k\u1ebft n\u1ed1i l\u1ea1i, c\u00e1c k\u00eanh (rooms) v\u00e0 broadcast. Th\u01b0 vi\u1ec7n \u00b5WebSockets.js c\u0169ng n\u1ed5i b\u1eadt v\u1edbi t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thu-vien-cho-Python-Server-side\"><\/span>Th\u01b0 vi\u1ec7n cho Python (Server-side)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Python c\u00f3 nhi\u1ec1u th\u01b0 vi\u1ec7n h\u1ed7 tr\u1ee3 Websocket, trong \u0111\u00f3 websockets l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn, cung c\u1ea5p m\u1ed9t tri\u1ec3n khai giao th\u1ee9c Websocket thu\u1ea7n t\u00fay v\u00e0 h\u1ed7 tr\u1ee3 async\/await. Tornado v\u00e0 Flask-SocketIO l\u00e0 c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/framework-la-gi\/\">framework<\/a> web m\u1ea1nh m\u1ebd c\u1ee7a Python c\u0169ng t\u00edch h\u1ee3p s\u1eb5n h\u1ed7 tr\u1ee3 Websocket, gi\u00fap vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng web real-time tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thu-vien-cho-Java-Server-side\"><\/span>Th\u01b0 vi\u1ec7n cho Java (Server-side)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong th\u1ebf gi\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/ngon-ngu-lap-trinh-java\/\">Java<\/a>, javax.websocket l\u00e0 m\u1ed9t API ti\u00eau chu\u1ea9n cho Websocket, \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi nhi\u1ec1u <a href=\"https:\/\/interdata.vn\/blog\/application-server-la-gi\/\">m\u00e1y ch\u1ee7 \u1ee9ng d\u1ee5ng<\/a> Java EE nh\u01b0 Tomcat v\u00e0 Jetty. Ngo\u00e0i ra, c\u00e1c th\u01b0 vi\u1ec7n nh\u01b0 Netty c\u0169ng cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng m\u1ea1ng, bao g\u1ed3m c\u1ea3 h\u1ed7 tr\u1ee3 Websocket. Spring Framework c\u0169ng cung c\u1ea5p module Spring WebSocket gi\u00fap t\u00edch h\u1ee3p Websocket v\u00e0o c\u00e1c \u1ee9ng d\u1ee5ng Spring.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cac-thu-vien-khac\"><\/span>C\u00e1c th\u01b0 vi\u1ec7n kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ngo\u00e0i ra, c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u th\u01b0 vi\u1ec7n Websocket kh\u00e1c cho c\u00e1c ng\u00f4n ng\u1eef v\u00e0 framework kh\u00e1c nh\u01b0 Go (gorilla\/websocket), Ruby (faye-websocket), <a href=\"https:\/\/interdata.vn\/blog\/php-la-gi\/\">PHP<\/a> (Ratchet), v\u00e0 nhi\u1ec1u ng\u00f4n ng\u1eef kh\u00e1c. S\u1ef1 \u0111a d\u1ea1ng n\u00e0y cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n l\u1ef1a ch\u1ecdn c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi stack c\u00f4ng ngh\u1ec7 m\u00e0 h\u1ecd \u0111ang s\u1eed d\u1ee5ng.<\/p>\n<div style=\"background-color: #e6f2ff; border-radius: 10px; padding: 20px; margin: 20px 0; border: 1px solid #b3d9ff;\">\n<p>\u0110\u1ec3 tri\u1ec3n khai WebSocket hi\u1ec7u qu\u1ea3, b\u1ea1n c\u1ea7n m\u1ed9t n\u1ec1n t\u1ea3ng hosting \u1ed5n \u0111\u1ecbnh v\u1edbi b\u0103ng th\u00f4ng cao. D\u1ecbch v\u1ee5 <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-hosting\/\">thu\u00ea Hosting<\/a> t\u1ea1i InterData \u0111\u01b0\u1ee3c trang b\u1ecb b\u1ed9 x\u1eed l\u00fd <a href=\"https:\/\/interdata.vn\/blog\/cpu-amd-epyc\/\">AMD EPYC<\/a> th\u1ebf h\u1ec7 m\u1edbi, k\u1ebft h\u1ee3p SSD NVMe U.2 mang l\u1ea1i t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd v\u01b0\u1ee3t tr\u1ed9i. T\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u gi\u00fap \u1ee9ng d\u1ee5ng WebSocket c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u giao ti\u1ebfp th\u1eddi gian th\u1ef1c.<\/p>\n<p>V\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng WebSocket ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi hi\u1ec7u n\u0103ng cao, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-vps\/\">thu\u00ea VPS gi\u00e1 r\u1ebb<\/a> ho\u1eb7c <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/cloud-server\/\">thu\u00ea Cloud Server gi\u00e1 r\u1ebb<\/a> t\u1eeb InterData. H\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 <a href=\"https:\/\/interdata.vn\/blog\/ao-hoa-la-gi\/\">\u1ea3o h\u00f3a<\/a> ti\u00ean ti\u1ebfn tr\u00ean n\u1ec1n <a href=\"https:\/\/interdata.vn\/blog\/intel-xeon\/\">Intel Xeon<\/a> Platinum, cung c\u1ea5p c\u1ea5u h\u00ecnh m\u1ea1nh v\u1edbi dung l\u01b0\u1ee3ng l\u1edbn cho c\u00e1c \u1ee9ng d\u1ee5ng IoT, game tr\u1ef1c tuy\u1ebfn hay h\u1ec7 th\u1ed1ng chat th\u1eddi gian th\u1ef1c c\u1ee7a b\u1ea1n v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh 24\/7.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>WebSocket l\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng hai chi\u1ec1u cho ph\u00e9p thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i li\u00ean t\u1ee5c gi\u1eefa client v\u00e0 server, mang l\u1ea1i kh\u1ea3 n\u0103ng giao ti\u1ebfp th\u1eddi gian th\u1ef1c v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi HTTP truy\u1ec1n th\u1ed1ng. B\u00e0i vi\u1ebft s\u1ebd gi\u1ea3i th\u00edch c\u00e1ch WebSocket ho\u1ea1t \u0111\u1ed9ng, kh\u00e1m ph\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf nh\u01b0 chat, game<\/p>\n","protected":false},"author":2,"featured_media":26523,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-26521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26521","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=26521"}],"version-history":[{"count":2,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26521\/revisions"}],"predecessor-version":[{"id":26524,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26521\/revisions\/26524"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/26523"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=26521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=26521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=26521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}