{"id":16860,"date":"2020-03-15T05:12:21","date_gmt":"2020-03-14T22:12:21","guid":{"rendered":"https:\/\/kiencang.net\/?p=15230"},"modified":"2020-03-15T05:12:21","modified_gmt":"2020-03-14T22:12:21","slug":"preconnect-youtube","status":"publish","type":"post","link":"https:\/\/kiencang.net\/preconnect-youtube\/","title":{"rendered":"\u0110o\u1ea1n m\u00e3 nh\u1ecf d\u00f9ng preconnect \u0111\u1ec3 t\u0103ng t\u1ed1c trang nh\u00fang video YouTube"},"content":{"rendered":"\n<p>Ph\u1ea7n n\u00e0y t\u00f4i s\u1ebd kh\u00f4ng gi\u1ea3i th\u00edch <a href=\"https:\/\/kiencang.net\/preconnect-dns-prefetch\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00ec sao preconnect gi\u00fap t\u0103ng t\u1ed1c<\/a> n\u1eefa, v\u00ec \u0111\u00e3 c\u00f3 m\u1ea5y b\u00e0i vi\u1ebft b\u00e0n \u0111\u1ebfn r\u1ed3i. T\u00f4i s\u1ebd \u0111i th\u1eb3ng v\u00e0o vi\u1ec7c gi\u1ea3i th\u00edch \u0111o\u1ea1n m\u00e3.<\/p>\n\n\n<p>Khi b\u1ea1n nh\u00fang video, <a href=\"https:\/\/kiencang.net\/youtube-tai-nang-nhu-the-nao\/\" target=\"_blank\" rel=\"noreferrer noopener\">YouTube s\u1ebd t\u1ea3i m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n sau<\/a>:<\/p>\n\n\n<ul><li>JS t\u1eeb server g\u1ed1c c\u1ee7a YouTube v\u00e0 d\u0129 nhi\u00ean c\u1ea3 video n\u1eefa;<\/li><li>\u1ea2nh xem tr\u01b0\u1edbc c\u1ee7a video t\u1eeb t\u00ean mi\u1ec1n <em>i.ytimg.com<\/em>;<\/li><li>\u1ea2nh \u0111\u1ea1i di\u1ec7n c\u1ee7a k\u00eanh t\u1eeb t\u00ean mi\u1ec1n <em>yt3.ggpht.com<\/em>;<\/li><li>Font t\u00f9y ch\u1ec9nh Roboto t\u1eeb t\u00ean mi\u1ec1n <em>fonts.gstatic.com<\/em>.<\/li><\/ul>\n\n\n<p>M\u00e3 m\u1eabu:<\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;link href='https:\/\/www.youtube.com' rel='preconnect' \/&gt;\n&lt;link href='https:\/\/i.ytimg.com' rel='preconnect' \/&gt;\n&lt;link href='https:\/\/yt3.ggpht.com' rel='preconnect' \/&gt;\n&lt;link href='https:\/\/fonts.gstatic.com' rel='preconnect' crossorigin \/&gt;    <\/code><\/pre>\n\n\n<p>\u0110o\u1ea1n m\u00e3 tr\u00ean ph\u1ea3i \u0111\u01b0\u1ee3c cho v\u00e0o ph\u1ea7n <em>&lt;header><\/em> v\u00e0 <a href=\"https:\/\/wordpress.org\/plugins\/oh-add-script-header-footer\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin SOGO<\/a> (WordPress) s\u1ebd gi\u00fap b\u1ea1n t\u00f9y ch\u1ec9nh m\u00e3 tr\u00ean c\u00e1c b\u00e0i vi\u1ebft c\u00f3 video nh\u00fang (ch\u1ee9 kh\u00f4ng n\u00ean nh\u00fang tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c b\u00e0i vi\u1ebft, v\u00ec c\u00e1c b\u00e0i kh\u00f4ng c\u00f3 video YouTube, \u0111\u01b0a m\u00e3 n\u00e0y v\u00e0o ch\u1ec9 l\u00e0m ch\u1eadm trang th\u00eam m\u00e0 th\u00f4i).<\/p>\n\n\n<p>V\u00ed d\u1ee5 nh\u01b0 video b\u00ean d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"C\u00e1ch \u0111\u0103ng nh\u1eadp WordPress &amp; H\u01b0\u1edbng d\u1eabn khi qu\u00ean m\u1eadt kh\u1ea9u\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/4qWpeX5TQ70?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n<ul><li>C\u00f3 \u1ea3nh xem tr\u01b0\u1edbc c\u1ee7a video l\u00e0:  <a href=\"https:\/\/i.ytimg.com\/vi\/4qWpeX5TQ70\/sddefault.jpg\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/i.ytimg.com\/vi\/4qWpeX5TQ70\/sddefault.jpg<\/a> <\/li><li>C\u00f3 \u1ea3nh \u0111\u1ea1i di\u1ec7n c\u1ee7a k\u00eanh l\u00e0:  <a href=\"https:\/\/yt3.ggpht.com\/-aAr4mX1N2EE\/AAAAAAAAAAI\/AAAAAAAAAAA\/GBYgkXHmrCA\/s68-c-k-no-mo-rj-c0xffffff\/photo.jpg\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/yt3.ggpht.com\/-aAr4mX1N2EE\/AAAAAAAAAAI\/AAAAAAAAAAA\/GBYgkXHmrCA\/s68-c-k-no-mo-rj-c0xffffff\/photo.jpg<\/a> <\/li><li>Font t\u00f9y ch\u1ec9nh Roboto l\u00e0: <a href=\"https:\/\/fonts.gstatic.com\/s\/roboto\/v18\/KFOmCnqEu92Fr1Mu4mxK.woff2\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/fonts.gstatic.com\/s\/roboto\/v18\/KFOmCnqEu92Fr1Mu4mxK.woff2<\/a><\/li><\/ul>\n\n\n<p>V\u00e0i l\u01b0u \u00fd:<\/p>\n\n\n<ul><li>V\u00ec l\u00e0 preconnect b\u1ea1n ph\u1ea3i n\u00eau r\u00f5 t\u00ean mi\u1ec1n l\u00e0 d\u1ea1ng http:\/\/ hay https:\/\/<\/li><li>Ri\u00eang v\u1edbi Google Fonts, b\u1ea1n ph\u1ea3i th\u00eam thu\u1ed9c t\u00ednh <em>crossorigin<\/em> v\u00e0o th\u00ec m\u1edbi chu\u1ea9n, n\u1ebfu kh\u00f4ng th\u00ec tr\u00ecnh duy\u1ec7t s\u1ebd ch\u1ec9 t\u00ecm ki\u1ebfm DNS m\u00e0 kh\u00f4ng th\u1ef1c hi\u1ec7n k\u1ebft n\u1ed1i b\u1ea3o m\u1eadt v\u1edbi t\u00ean mi\u1ec1n Google Fonts.<\/li><li>Trong khi preconnect v\u1edbi t\u00ean mi\u1ec1n YouTube.com th\u00ec ch\u1eafc ch\u1eafn \u1ed5n th\u00ec c\u00e1c link preconnect c\u00f2n l\u1ea1i (ba c\u00e1i b\u00ean d\u01b0\u1edbi) b\u1ea1n ph\u1ea3i ki\u1ec3m tra k\u1ef9 xem c\u00f3 \u0111\u00fang hay kh\u00f4ng, v\u00ec \u0111\u00f3 l\u00e0 c\u00e1c d\u1ecbch v\u1ee5 ph\u1ee5 thu\u1ed9c, YouTube c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3 b\u1eb1ng c\u00e1i kh\u00e1c. <\/li><li>B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng <a href=\"https:\/\/tools.pingdom.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">tools.pingdom.com<\/a> ho\u1eb7c tr\u00ecnh duy\u1ec7t Chrome \u1edf ph\u1ea7n c\u00f4ng c\u1ee5 cho nh\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 bi\u1ebft website c\u1ee7a b\u1ea1n <a href=\"https:\/\/kiencang.net\/tai-nguyen-ben-thu-ba-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea3i nh\u1eefng t\u00e0i nguy\u00ean n\u00e0o t\u1eeb b\u00ean th\u1ee9 ba<\/a><\/li><li>B\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 preconnect v\u1edbi c\u00e1c t\u00e0i nguy\u00ean c\u1ee7a b\u00ean th\u1ee9 ba kh\u00e1c m\u00e0 website c\u1ee7a b\u1ea1n d\u00f9ng, v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn nh\u01b0 Facebook, Google Analytics, m\u00e3 qu\u1ea3ng c\u00e1o, m\u00e3 ti\u1ebfp th\u1ecb l\u1ea1i. <\/li><li>Tuy th\u1eddi gian ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c qua c\u00e1ch n\u00e0y nh\u1ecf th\u00f4i nh\u01b0ng n\u1ebfu trang c\u1ee7a b\u1ea1n k\u1ebft n\u1ed1i v\u1edbi nhi\u1ec1u t\u00e0i nguy\u00ean b\u00ean th\u1ee9 ba th\u00ec k\u1ebft h\u1ee3p l\u1ea1i n\u00f3 c\u0169ng ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c kha kh\u00e1. V\u1edbi nh\u1eefng ai kh\u1eaft khe trong v\u1ea5n \u0111\u1ec1 t\u0103ng t\u1ed1c web, b\u1ea5t k\u1ef3 c\u1ea3i ti\u1ebfn nh\u1ecf n\u00e0o c\u0169ng s\u1ebd gom g\u00f3p th\u00e0nh k\u1ebft qu\u1ea3 gi\u00e1 tr\u1ecb.<\/li><li>Ch\u1ec9 n\u00ean preconnect v\u1edbi t\u00e0i nguy\u00ean m\u00e0 b\u1ea1n th\u1ef1c s\u1ef1 d\u00f9ng, \u0111\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao b\u1ea1n n\u00ean s\u1eed d\u1ee5ng plugin SOGO \u1edf tr\u00ean \u0111\u1ec3 ch\u00e8n \u0111\u00fang v\u00e0o b\u00e0i c\u1ea7n m\u00e0 th\u00f4i.<\/li><li>N\u1ebfu b\u1ea1n \u0111\u00e3 \u00e1p d\u1ee5ng <a href=\"https:\/\/kiencang.net\/lazy-load-anh-va-video\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u0103ng t\u1ed1c video ki\u1ec3u tr\u00ec ho\u00e3n t\u1ea3i (lazy-load)<\/a>, th\u00ed d\u1ee5 nh\u01b0 b\u1eb1ng <a href=\"https:\/\/kiencang.net\/plugin-wp-youtube-lyte\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin WP YouTube Lyte<\/a> ho\u1eb7c th\u01b0 vi\u1ec7n ki\u1ec3u <a href=\"https:\/\/kiencang.net\/lazysizes-js-lazy-load-anh-p1\/\" target=\"_blank\" rel=\"noreferrer noopener\">lazysizes<\/a> th\u00ec t\u00e1c d\u1ee5ng c\u1ee7a preconnect g\u1ea7n nh\u01b0 s\u1ebd kh\u00f4ng c\u00f2n, v\u00ec preconnect ch\u1ec9 \u00e1p d\u1ee5ng trong v\u00f2ng 10s, ngh\u0129a l\u00e0 n\u1ebfu ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng b\u1ea5m v\u00e0o video trong v\u00f2ng 10s th\u00ec preconnect s\u1ebd b\u1ecb \u0111\u00f3ng k\u1ebft n\u1ed1i. Ngo\u00e0i ra plugin ki\u1ec3u WP YouTube Lyte c\u00f2n can thi\u1ec7p \u0111\u1ebfn \u0111\u01b0\u1eddng d\u1eabn \u1ea3nh \u0111\u1ea1i di\u1ec7n n\u00ean \u0111o\u1ea1n m\u00e3 preconnect c\u00f3 kh\u1ea3 n\u0103ng kh\u00f4ng c\u00f2n t\u00e1c d\u1ee5ng n\u1eefa.<\/li><\/ul>\n\n\n<p>Cu\u1ed1i c\u00f9ng sau khi th\u1eed nghi\u1ec7m v\u1edbi preconnect (kh\u00f4ng ch\u1ec9 ri\u00eang v\u1edbi YouTube, v\u00ec preconnect c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng l\u00ean b\u1ea5t c\u1ee9 t\u00e0i nguy\u00ean c\u1ee7a b\u00ean th\u1ee9 ba n\u00e0o), b\u1ea1n n\u00ean <a href=\"https:\/\/kiencang.net\/trai-nghiem-link-preconnect\/\" target=\"_blank\" rel=\"noreferrer noopener\">ki\u1ec3m tra l\u1ea1i k\u1ebft qu\u1ea3 th\u1ef1c t\u1ebf<\/a> cho ch\u1eafc ch\u1eafn.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\">Li\u1ec7u preconnect c\u00f3 gi\u00fap t\u0103ng t\u1ed1c website?<\/h2>\n\n\n<p>\u0110\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 demo \u0111\u01a1n gi\u1ea3n, trong \u0111\u00f3 t\u00f4i nh\u00fang video v\u00e0o hai trang c\u00f3 n\u1ed9i dung gi\u1ed1ng h\u1ec7t nhau, r\u1ed3i ki\u1ec3m tra xem trang c\u00f3 preconnect c\u00f3 nhanh h\u01a1n trang kh\u00f4ng c\u00f3 hay kh\u00f4ng.<\/p>\n\n\n<ul><li>Trang c\u00f3 preconnect: <a href=\"https:\/\/static.kiencang.net\/2020\/youtube-khong-preconnect.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/static.kiencang.net\/2020\/youtube-khong-preconnect.html<\/a><\/li><li>Trang kh\u00f4ng c\u00f3 preconnect: <a href=\"https:\/\/static.kiencang.net\/2020\/youtube-co-preconnect.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/static.kiencang.net\/2020\/youtube-co-preconnect.html<\/a><\/li><\/ul>\n\n\n<p>V\u00ec r\u1ea5t kh\u00f3 ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 trang nh\u00fang video YouTube th\u00f4ng qua c\u00f4ng c\u1ee5 nh\u01b0 DevTools, n\u00ean t\u00f4i s\u1eed d\u1ee5ng <a href=\"https:\/\/www.webpagetest.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">WebPageTest.Org<\/a> \u0111\u1ec3 ki\u1ec3m tra. Qua 7 l\u1ea7n test, m\u1ed7i l\u1ea7n test ch\u1ea1y ki\u1ec3m tra 3 l\u1ea7n (d\u01b0\u1edbi d\u1ea1ng l\u01b0\u1ee3t xem \u0111\u1ea7u ti\u00ean), c\u00e1c ch\u1ec9 s\u1ed1 cho th\u1ea5y khi c\u00f3 preconnect, trang s\u1ebd t\u1ea3i nhanh h\u01a1n \u0111\u00e1ng k\u1ec3 tr\u00ean hai ch\u1ec9 s\u1ed1 th\u1eddi gian l\u00e0: <em>load time<\/em> v\u00e0 <em>speed index<\/em>. C\u00e1c ch\u1ec9 s\u1ed1 c\u00f2n l\u1ea1i ch\u00eanh kh\u00f4ng \u0111\u00e1ng k\u1ec3:<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/04\/trang-co-preconnect.png\" alt=\"trang c\u00f3 preconnect\" class=\"wp-image-16064\"\/><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/04\/khong-co-preconnect.png\" alt=\"trang kh\u00f4ng c\u00f3 preconnect\" class=\"wp-image-16065\"\/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u1ea7n n\u00e0y t\u00f4i s\u1ebd kh\u00f4ng gi\u1ea3i th\u00edch v\u00ec sao preconnect gi\u00fap t\u0103ng t\u1ed1c n\u1eefa, v\u00ec \u0111\u00e3 c\u00f3 m\u1ea5y b\u00e0i vi\u1ebft b\u00e0n \u0111\u1ebfn r\u1ed3i. T\u00f4i s\u1ebd \u0111i th\u1eb3ng v\u00e0o vi\u1ec7c gi\u1ea3i th\u00edch \u0111o\u1ea1n m\u00e3. Khi b\u1ea1n nh\u00fang video, YouTube s\u1ebd t\u1ea3i m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n sau: JS t\u1eeb server g\u1ed1c c\u1ee7a YouTube v\u00e0 d\u0129 nhi\u00ean c\u1ea3 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":15236,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[291],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0110o\u1ea1n m\u00e3 nh\u1ecf d\u00f9ng preconnect \u0111\u1ec3 t\u0103ng t\u1ed1c trang nh\u00fang video YouTube &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"description\" content=\"Nh\u00fang video YouTube l\u00e0 \u0111i\u1ec1u ph\u1ed5 bi\u1ebfn, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn website n\u1eb7ng h\u01a1n nhi\u1ec1u. B\u00e0i vi\u1ebft n\u00e0y chia s\u1ebb m\u1eb9o nh\u1ecf \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 trang b\u1eb1ng preconnect.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/preconnect-youtube\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110o\u1ea1n m\u00e3 nh\u1ecf d\u00f9ng preconnect \u0111\u1ec3 t\u0103ng t\u1ed1c trang nh\u00fang video YouTube &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Nh\u00fang video YouTube l\u00e0 \u0111i\u1ec1u ph\u1ed5 bi\u1ebfn, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn website n\u1eb7ng h\u01a1n nhi\u1ec1u. 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