{"id":11352,"date":"2019-01-19T08:36:13","date_gmt":"2019-01-19T08:36:13","guid":{"rendered":"http:\/\/www.ducanhplus.com\/?p=11352"},"modified":"2019-01-19T08:36:13","modified_gmt":"2019-01-19T08:36:13","slug":"gioi-thieu-dich-vu-dns-cua-cloudflare","status":"publish","type":"post","link":"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/","title":{"rendered":"Gi\u1edbi thi\u1ec7u D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 t\u1ed1i \u01b0u v\u00e0 t\u0103ng t\u1ed1c website"},"content":{"rendered":"\n<p>V\u00e0i l\u1eddi t\u1eeb ng\u01b0\u1eddi d\u1ecbch: nh\u1edd t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt b\u1ea3n ghi r\u1ea5t nhanh- \u00e1p \u0111\u1ea3o h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 cung c\u1ea5p t\u00ean mi\u1ec1n, v\u00ec th\u1ebf d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare tr\u1edf n\u00ean c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. C\u00e1c c\u00f4ng vi\u1ec7c nh\u01b0 t\u1ea1o b\u1ea3n ghi m\u1edbi &amp; \u0111\u1eb7c bi\u1ec7t l\u00e0 <a href=\"https:\/\/kiencang.net\/combo-chuyen-host-nhanh\/\" target=\"_blank\" rel=\"noreferrer noopener\">chuy\u1ec3n hosting<\/a> y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt b\u1ea3n ghi DNS c\u00e0ng cao c\u00e0ng t\u1ed1t. <\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/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\" role=\"button\"><label for=\"item-6577d6c360d23\" ><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><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d6c360d23\"  type=\"checkbox\" id=\"item-6577d6c360d23\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/#Dich_vu_quan_ly_DNS_Nhanh_An_toan\" title=\"D\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd DNS Nhanh &amp; An to\u00e0n\">D\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd DNS Nhanh &amp; An to\u00e0n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/#Xay_dung_DNS_co_hieu_suat_cao\" title=\"X\u00e2y d\u1ef1ng DNS c\u00f3 hi\u1ec7u su\u1ea5t cao\">X\u00e2y d\u1ef1ng DNS c\u00f3 hi\u1ec7u su\u1ea5t cao<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/#DNS_duoc_tich_hop_san_tinh_nang_bao_mat\" title=\"DNS \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n t\u00ednh n\u0103ng b\u1ea3o m\u1eadt\">DNS \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n t\u00ednh n\u0103ng b\u1ea3o m\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/#Quan_ly_DNS_de_dang\" title=\"Qu\u1ea3n l\u00fd DNS d\u1ec5 d\u00e0ng\">Qu\u1ea3n l\u00fd DNS d\u1ec5 d\u00e0ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/#He_thong_DNS_thu_cap\" title=\"H\u1ec7 th\u1ed1ng DNS th\u1ee9 c\u1ea5p\">H\u1ec7 th\u1ed1ng DNS th\u1ee9 c\u1ea5p<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dich_vu_quan_ly_DNS_Nhanh_An_toan\"><\/span>D\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd DNS Nhanh &amp; An to\u00e0n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Ph\u1ee5c v\u1ee5 h\u01a1n 39% t\u00ean mi\u1ec1n DNS \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd(*), Cloudflare hi\u1ec7n \u0111ang ch\u1ea1y m\u1ed9t trong nh\u1eefng m\u1ea1ng DNS ri\u00eang uy t\u00edn v\u00e0 quy\u1ec1n l\u1ef1c nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi. V\u1edbi t\u1ed1c \u0111\u1ed9 truy v\u1ea5n trung b\u00ecnh ch\u1ec9 v\u00e0i mili gi\u00e2y, n\u00f3 hi\u1ec7n l\u00e0 <a href=\"https:\/\/www.dnsperf.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd DNS c\u00f3 hi\u1ec7u su\u1ea5t nhanh nh\u1ea5t to\u00e0n c\u1ea7u<\/a>(**).\u00a0 C\u1eadp nh\u1eadt DNS c\u00f3 hi\u1ec7u l\u1ef1c ch\u1ec9 trong v\u00e0i gi\u00e2y, l\u00e0m cho vi\u1ec7c b\u1ecb ch\u1eadm tr\u1ec5 lan truy\u1ec1n DNS gi\u1edd ch\u1ec9 c\u00f2n l\u00e0 c\u00e2u chuy\u1ec7n c\u1ee7a qu\u00e1 kh\u1ee9.<\/p>\n\n\n<p>D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare cung c\u1ea5p mi\u1ec5n ph\u00ed cho t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi. Vi\u1ec7c thi\u1ebft l\u1eadp ch\u1ec9 m\u1ea5t c\u00f3 v\u00e0i ph\u00fat, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 gia t\u0103ng t\u00ednh n\u0103ng b\u1ea3o m\u1eadt c\u0169ng nh\u01b0 hi\u1ec7u su\u1ea5t m\u00e0 ch\u1eb3ng ph\u1ea3i t\u1ed1n \u0111\u1ed3ng xu n\u00e0o.<\/p>\n\n\n<p>M\u1ea1ng l\u01b0\u1edbi Anycast to\u00e0n c\u1ea7u c\u1ee7a Cloudflare l\u00e0 n\u1ec1n t\u1ea3ng h\u1ed7 tr\u1ee3 cho DNS c\u0169ng nh\u01b0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c, ph\u1ee5c v\u1ee5 \u0111\u1ebfn 130 t\u1ef7 truy v\u1ea5n DNS m\u1ed7i ng\u00e0y, v\u00e0 v\u1eabn \u0111ang ti\u1ebfp t\u1ee5c t\u0103ng tr\u01b0\u1edfng. <\/p>\n\n\n<p>H\u01a1n 10 tri\u1ec7u th\u00e0nh ph\u1ea7n tr\u00ean Internet bao g\u1ed3m c\u00e1c trang web th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed l\u1edbn, c\u01a1 quan ch\u00ednh ph\u1ee7, v\u00e0 c\u00e1c doanh nghi\u1ec7p s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o d\u1ecbch v\u1ee5 c\u1ee7a h\u1ecd lu\u00f4n tr\u1ef1c tuy\u1ebfn v\u00e0 hi\u1ec7n di\u1ec7n cho t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n\n\n<p>(*) Theo th\u1ed1ng k\u00ea c\u1ee7a Datanyze, trong 1 tri\u1ec7u trang web c\u00f3 th\u1ee9 h\u1ea1ng t\u1ed1t nh\u1ea5t tr\u00ean Alexa, Cloudflare hi\u1ec7n h\u1ed7 tr\u1ee3 DNS cho h\u01a1n 116 ng\u00e0n website, chi\u1ebfm g\u1ea7n 37% th\u1ecb ph\u1ea7n (gi\u1ea3m h\u01a1n 2% so v\u1edbi th\u1eddi \u0111i\u1ec3m c\u1ee7a b\u00e0i vi\u1ebft g\u1ed1c ti\u1ebfng Anh).<\/p>\n\n\n<p>(**): Theo th\u1ed1ng k\u00ea c\u1ee7a DNSPerf, \u0111\u00e2y l\u00e0 hi\u1ec7u su\u1ea5t th\u00f4 c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p DNS ri\u00eang (Authoritative DNS Providers) trong 30 ng\u00e0y g\u1ea7n nh\u1ea5t (gi\u00e1 tr\u1ecb nh\u1ecf h\u01a1n th\u00ec t\u1ed1t h\u01a1n, Cloudflare \u0111\u1ee9ng \u0111\u1ea7u, \u0111\u00e1ng ch\u00fa \u00fd, c\u00f4ng ty DigitalOcean chuy\u00ean v\u1ec1 m\u1ea3ng hosting \u0111\u1ee9ng \u1edf v\u1ecb tr\u00ed th\u1ee9 ba):<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/thoi-gian-truy-van-DNS.png\" alt=\"th\u1eddi gian truy v\u1ea5n DNS\" class=\"wp-image-11358\"\/><\/figure><\/div>\n\n\n<p>C\u00f2n b\u00ean d\u01b0\u1edbi l\u00e0 hi\u1ec7u su\u1ea5t th\u00f4 c\u1ee7a c\u00e1c nh\u00e0 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n c\u00f4ng c\u1ed9ng (public DNS resolvers), c\u00e1i t\u1ed1t nh\u1ea5t 1.1.1.1 c\u0169ng c\u1ee7a Cloudflare:<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/phan-giai-ten-mien-cong-cong.png\" alt=\"ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n c\u00f4ng c\u1ed9ng\" class=\"wp-image-11359\"\/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Xay_dung_DNS_co_hieu_suat_cao\"><\/span>X\u00e2y d\u1ef1ng DNS c\u00f3 hi\u1ec7u su\u1ea5t cao<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>H\u1ec7 th\u1ed1ng DNS c\u1ee7a Cloudflare \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n t\u1ea3ng gi\u1ed1ng v\u1edbi h\u1ec7 th\u1ed1ng m\u1ea1ng CDN nhanh-v\u00e0-linh-ho\u1ea1t c\u1ee7a ch\u00fang t\u00f4i. Cloudflare ph\u1ea3n h\u1ed3i truy v\u1ea5n t\u00ean mi\u1ec1n tr\u00ean c\u00f9ng 165 <a href=\"https:\/\/www.cloudflare.com\/network\/\" target=\"_blank\" rel=\"noreferrer noopener\">trung t\u00e2m d\u1eef li\u1ec7u<\/a> m\u00e0 ch\u00fang t\u00f4i cache n\u1ed9i dung c\u1ee7a kh\u00e1ch h\u00e0ng, \u0111i\u1ec1u \u0111\u00f3 gi\u00fap ch\u00fang t\u00f4i tr\u1edf th\u00e0nh nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS nhanh nh\u1ea5t th\u1ebf gi\u1edbi.<\/p>\n\n\n<p>Thay \u0111\u1ed5i b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c lan truy\u1ec1n v\u1edbi t\u1ed1c \u0111\u1ed9 cao h\u01a1n, v\u00ec th\u1ebf ch\u00fang ta c\u00f3 th\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng ph\u1ea3i ch\u1edd \u0111\u1ee3i DNS TTLs h\u1ebft h\u1ea1n. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c <a href=\"https:\/\/kiencang.net\/chuyen-host-website-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">chuy\u1ec3n m\u00e1y ch\u1ee7 web<\/a> ho\u1eb7c chuy\u1ec3n sang m\u00e1y ch\u1ee7 kh\u00f4i ph\u1ee5c th\u1ea3m h\u1ecda (disaster recovery server) \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n<p>DNS c\u1ee7a Cloudflare trung b\u00ecnh ch\u1ec9 m\u1ea5t:<\/p>\n\n\n<p class=\"has-text-align-center\"><span style=\"font-size: 24pt;\"> 11ms <span style=\"font-size: 12pt;\">\u0111\u1ec3 th\u1ef1c hi\u1ec7n t\u00ecm ki\u1ebfm DNS<\/span><\/span><\/p>\n\n\n<p class=\"has-text-align-center\"><span style=\"font-size: 24pt;\">D\u01b0\u1edbi 5 gi\u00e2y <span style=\"font-size: 12pt;\">\u0111\u1ec3 lan t\u1ecfa c\u00e1c b\u1ea3n ghi DNS ra to\u00e0n c\u1ea7u (wordwide DNS record propagation)<\/span><\/span><\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DNS_duoc_tich_hop_san_tinh_nang_bao_mat\"><\/span>DNS \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n t\u00ednh n\u0103ng b\u1ea3o m\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>DNS c\u1ee7a Cloudflare \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p t\u00ednh n\u0103ng ch\u1ed1ng DDoS cho h\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n (domain resolution). \u0110\u00e2y c\u0169ng l\u00e0 t\u00ednh n\u0103ng \u0111\u1ee9ng \u0111\u1eb1ng sau \u0111\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng 25Tbps (Terabytes Per Second, m\u1ed9t Terabyte = 1000 Gb) cho h\u01a1n 12 tri\u1ec7u d\u1ecbch v\u1ee5-s\u1ea3n ph\u1ea9m Internet kh\u1ecfi b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (denial-of-service). <\/p>\n\n\n<p>H\u1ec7 th\u1ed1ng DNS c\u1ee7a Cloudflare c\u0169ng bao g\u1ed3m s\u1eb5n <a href=\"https:\/\/kiencang.net\/can-bang-tai-cua-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u00ednh n\u0103ng t\u1ea3i c\u00e2n b\u1eb1ng (load-balancing)<\/a>, t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng (chuy\u1ec3n sang m\u00e1y ch\u1ee7 kh\u00e1c kh\u1ecfe m\u1ea1nh khi m\u1ed9t m\u00e1y ch\u1ee7 \u0111ang d\u00f9ng c\u00f3 v\u1ea5n \u0111\u1ec1), gi\u1edbi h\u1ea1n t\u1ef7 l\u1ec7 v\u00e0 l\u1ecdc. Cloudflare c\u0169ng cung c\u1ea5p DNSSEC gia c\u1ed1 th\u00eam m\u1ed9t l\u1edbp tin c\u1eady l\u00ean tr\u00ean c\u00f9ng c\u1ee7a DNS b\u1eb1ng c\u00e1ch cung c\u1ea5p x\u00e1c th\u1ef1c ch\u1ee7 quy\u1ec1n (authentication). X\u00e1c th\u1ef1c hai l\u1edbp c\u00f3 s\u1eb5n cho t\u1ea5t c\u1ea3 c\u00e1c g\u00f3i \u0111\u0103ng k\u00fd.<\/p>\n\n\n<p>Kh\u00e1ch h\u00e0ng \u1edf g\u00f3i d\u1ecbch v\u1ee5 Business nh\u1eadn \u0111\u01b0\u1ee3c 100% uptime SLA. Kh\u00e1ch h\u00e0ng \u1edf g\u00f3i Enterprise nh\u1eadn \u0111\u01b0\u1ee3c 2500% uptime SLA.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quan_ly_DNS_de_dang\"><\/span>Qu\u1ea3n l\u00fd DNS d\u1ec5 d\u00e0ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Ch\u00fang t\u00f4i l\u00e0m cho DNS tr\u1edf n\u00ean d\u1ec5 d\u00e0ng. T\u1ea5t c\u1ea3 t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd th\u00f4ng qua giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng th\u00e2n thi\u1ec7n ho\u1eb7c th\u00f4ng qua API c\u1ee7a ch\u00fang t\u00f4i, b\u1ea5t k\u1ec3 n\u01a1i n\u00e0o thu\u1ed9c t\u00ednh Internet c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef. Ch\u00fang t\u00f4i kh\u00f4ng gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng truy v\u1ea5n v\u00e0 h\u1ed7 tr\u1ee3 h\u00e0ng tri\u1ec7u b\u1ea3n ghi cho m\u1ed7i m\u1ed9t t\u00ean mi\u1ec1n ri\u00eang l\u1ebb.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"He_thong_DNS_thu_cap\"><\/span>H\u1ec7 th\u1ed1ng DNS th\u1ee9 c\u1ea5p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t nh\u01b0 m\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS th\u1ee9 c\u1ea5p. Khi c\u00e1c b\u1ea3n ghi&nbsp;ch\u00ednh \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda, c\u00e1c b\u1ea3n ghi t\u01b0\u01a1ng \u1ee9ng c\u1ee7a Cloudflare c\u0169ng t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt theo.<\/p>\n\n\n<p><strong>DNS Ch\u00ednh-Th\u1ee9 c\u1ea5p<\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/dns1.png\" alt=\"DNS ch\u00ednh v\u00e0 th\u1ee9 c\u1ea5p\" class=\"wp-image-11353\"\/><\/figure><\/div>\n\n\n<p>M\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS tr\u01b0\u1edbc \u0111\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 l\u00e0 DNS ch\u00ednh (primary DNS), bao g\u1ed3m vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c b\u1ea3n ghi v\u00e0 th\u1ef1c hi\u1ec7n ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n. C\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS ch\u00ednh. M\u1ed9t khi \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda, nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS ch\u00ednh t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt DNS c\u1ee7a Cloudflare. C\u1ea3 DNS c\u1ee7a Cloudflare v\u00e0 DNS ch\u00ednh \u0111\u1ec1u th\u1ea5y l\u01b0u l\u01b0\u1ee3ng DNS, v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 \u0111\u1ec7 quy quy\u1ebft \u0111\u1ecbnh xem h\u1ec7 th\u1ed1ng DNS n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n<p><strong>DNS ch\u00ednh \u1ea9n<\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/dns2.png\" alt=\"DNS 2\" class=\"wp-image-11356\"\/><\/figure><\/div>\n\n\n<p>H\u1ec7 th\u1ed1ng DNS c\u1ee7a Cloudflare nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng DNS tin c\u1eady \u0111\u1ed1i l\u1ea1i internet c\u00f4ng c\u1ed9ng. Qu\u1ea3n tr\u1ecb vi\u00ean ch\u1ec9nh s\u1eeda v\u00e0 qu\u1ea3n tr\u1ecb DNS th\u00f4ng qua m\u1ed9t nh\u00e0 cung c\u1ea5p DNS b\u00ean ngo\u00e0i, bao g\u1ed3m qu\u1ea3n l\u00fd c\u00e1c b\u1ea3n ghi v\u00e0 ph\u00e2n gi\u1ea3i. M\u1ed9t khi \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda, c\u1eadp nh\u1eadt s\u1ebd \u0111\u01b0\u1ee3c lan to\u1ea3 th\u00f4ng qua DNS c\u1ee7a Cloudflare.<\/p>\n\n\n<p><em>(L\u01b0\u1ee3c d\u1ecbch t\u1eeb b\u00e0i gi\u1edbi thi\u1ec7u d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare)<\/em><\/p>\n\n\n<p>C\u00e1c b\u00e0i vi\u1ebft kh\u00e1c t\u00ecm hi\u1ec3u v\u1ec1 Cloudflare:<\/p>\n\n\n<ul><li><a href=\"https:\/\/kiencang.net\/can-bang-tai-cua-cloudflare\/\">T\u00ednh n\u0103ng c\u00e2n b\u1eb1ng t\u1ea3i c\u1ee7a Cloudflare<\/a><\/li><li><a href=\"https:\/\/kiencang.net\/tinh-nang-cdn-cua-cloudflare\/\">T\u00ednh n\u0103ng CDN c\u1ee7a Cloudflare<\/a><\/li><li><a href=\"https:\/\/kiencang.net\/toi-uu-hoa-web-cua-cloudflare\/\">D\u1ecbch v\u1ee5 t\u1ed1i \u01b0u h\u00f3a web c\u1ee7a Cloudflare<\/a><\/li><li><a href=\"https:\/\/kiencang.net\/dinh-tuyen-argo-cua-cloudflare\/\">B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh c\u1ee7a Cloudflare<\/a><\/li><li><a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cloudflare\/\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Cloudflare<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>V\u00e0i l\u1eddi t\u1eeb ng\u01b0\u1eddi d\u1ecbch: nh\u1edd t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt b\u1ea3n ghi r\u1ea5t nhanh- \u00e1p \u0111\u1ea3o h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 cung c\u1ea5p t\u00ean mi\u1ec1n, v\u00ec th\u1ebf d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare tr\u1edf n\u00ean c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. C\u00e1c c\u00f4ng vi\u1ec7c nh\u01b0 t\u1ea1o b\u1ea3n ghi m\u1edbi &amp; \u0111\u1eb7c bi\u1ec7t l\u00e0 chuy\u1ec3n hosting y\u00eau &hellip;<\/p>\n","protected":false},"author":1,"featured_media":20456,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[257],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Gi\u1edbi thi\u1ec7u D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 t\u1ed1i \u01b0u v\u00e0 t\u0103ng t\u1ed1c website &#8226; Ki\u1ebfn c\u00e0ng<\/title>\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\/gioi-thieu-dich-vu-dns-cua-cloudflare\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gi\u1edbi thi\u1ec7u D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 t\u1ed1i \u01b0u v\u00e0 t\u0103ng t\u1ed1c website &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"V\u00e0i l\u1eddi t\u1eeb ng\u01b0\u1eddi d\u1ecbch: nh\u1edd t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt b\u1ea3n ghi r\u1ea5t nhanh- \u00e1p \u0111\u1ea3o h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 cung c\u1ea5p t\u00ean mi\u1ec1n, v\u00ec th\u1ebf d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare tr\u1edf n\u00ean c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. C\u00e1c c\u00f4ng vi\u1ec7c nh\u01b0 t\u1ea1o b\u1ea3n ghi m\u1edbi &amp; \u0111\u1eb7c bi\u1ec7t l\u00e0 chuy\u1ec3n hosting y\u00eau &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-01-19T08:36:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/dns-cloudflare.png\" \/>\n\t<meta property=\"og:image:width\" content=\"787\" \/>\n\t<meta property=\"og:image:height\" content=\"515\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Gi\u1edbi thi\u1ec7u D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 t\u1ed1i \u01b0u v\u00e0 t\u0103ng t\u1ed1c website &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/gioi-thieu-dich-vu-dns-cua-cloudflare\/","og_locale":"vi_VN","og_type":"article","og_title":"Gi\u1edbi thi\u1ec7u D\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare \u0111\u1ec3 t\u1ed1i \u01b0u v\u00e0 t\u0103ng t\u1ed1c website &#8226; Ki\u1ebfn c\u00e0ng","og_description":"V\u00e0i l\u1eddi t\u1eeb ng\u01b0\u1eddi d\u1ecbch: nh\u1edd t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt b\u1ea3n ghi r\u1ea5t nhanh- \u00e1p \u0111\u1ea3o h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a nh\u00e0 cung c\u1ea5p t\u00ean mi\u1ec1n, v\u00ec th\u1ebf d\u1ecbch v\u1ee5 DNS c\u1ee7a Cloudflare tr\u1edf n\u00ean c\u1ef1c k\u1ef3 ph\u1ed5 bi\u1ebfn. 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