{"id":16172,"date":"2020-08-04T14:19:28","date_gmt":"2020-08-04T07:19:28","guid":{"rendered":"https:\/\/speed.family\/?p=16172"},"modified":"2020-08-04T14:19:28","modified_gmt":"2020-08-04T07:19:28","slug":"cap-nhat-dns-nhanh-cham","status":"publish","type":"post","link":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/","title":{"rendered":"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS"},"content":{"rendered":"\n<p>Khi b\u1ea1n \u0111\u0103ng k\u00fd m\u1ed9t t\u00ean mi\u1ec1n m\u1edbi, c\u00e1c nameserver s\u1ebd thay \u0111\u1ed5i. N\u00f3i c\u00e1ch kh\u00e1c, thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf DNS (Domain Name System \/ H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n), v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 mong \u0111\u1ee3i c\u00e1c thay \u0111\u1ed5i \u0111\u00f3 \u0111\u01b0\u1ee3c lan t\u1ecfa (propagate) <strong>trong v\u00f2ng 24 gi\u1edd<\/strong>.<\/p>\n\n\n<ul><li><strong>C\u00e0i \u0111\u1eb7t TTL (<a href=\"https:\/\/kiencang.net\/time-to-live-ttl-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Time to Live \/ Th\u1eddi gian s\u1ed1ng<\/a>)<\/strong>: TTL l\u00e0 kho\u1ea3ng th\u1eddi gian b\u1ea1n y\u00eau c\u1ea7u m\u00e1y ch\u1ee7 cache th\u00f4ng tin m\u1edbi cho c\u00e1c b\u1ea3n ghi DNS. V\u00ec b\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp TTL cho t\u1eebng b\u1ea3n ghi DNS b\u00ean trong file zone c\u1ee7a t\u00ean mi\u1ec1n, b\u1ea1n c\u00f3 th\u1ec3 t\u00f9y th\u00edch thi\u1ebft l\u1eadp th\u1eddi gian n\u00e0y, ch\u1eb3ng h\u1ea1n \u0111\u1ec3 l\u00e0 hai ti\u1ebfng. \u0110i\u1ec1u \u0111\u00f3 n\u00f3i r\u1eb1ng b\u1ea5t c\u1ee9 khi n\u00e0o c\u00f3 thay \u0111\u1ed5i trong c\u00e1c b\u1ea3n ghi DNS c\u1ee7a b\u1ea1n, c\u00e1c m\u00e1y ch\u1ee7 s\u1ebd l\u01b0u tr\u1eef th\u00f4ng tin c\u1ee5c b\u1ed9 hai ti\u1ebfng, tr\u01b0\u1edbc khi n\u00f3 nh\u1eadn c\u1eadp nh\u1eadt th\u00f4ng tin m\u1edbi t\u1eeb nameserver \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh\/c\u00f3 th\u1ea9m quy\u1ec1n c\u1ee7a b\u1ea1n. B\u1ea1n c\u00f3 th\u1ec3 th\u00f4ng qua c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u0111\u1ec3 gia t\u0103ng t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n thay \u0111\u1ed5i DNS. S\u1eed d\u1ee5ng TTL ng\u1eafn h\u01a1n c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt DNS, nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng th\u1ee9c n\u00e0y l\u00e0 n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn qu\u00e1 t\u1ea3i (overloading) cho m\u00e1y ch\u1ee7- n\u1ebfu b\u1ea1n c\u00f3 nhi\u1ec1u thay \u0111\u1ed5i c\u1ea7n th\u1ef1c hi\u1ec7n, th\u00ec h\u1ec7 qu\u1ea3 l\u00e0 m\u00e1y ch\u1ee7 s\u1ebd ph\u1ea3i nh\u1eadn nhi\u1ec1u truy v\u1ea5n c\u00f9ng m\u1ed9t l\u00fac. Trong tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3, t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n s\u1ebd b\u1ecb ch\u1eadm \u0111i do qu\u00e1 t\u1ea3i.<\/li><li><strong>\u1ea2nh h\u01b0\u1edfng c\u1ee7a ISP (Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet \/ Internet Service Provider)<\/strong>: Th\u00f4ng th\u01b0\u1eddng, ISP c\u1ee7a b\u1ea1n s\u1ebd cache ho\u1eb7c l\u01b0u tr\u1eef c\u00e1c b\u1ea3n ghi DNS c\u1ee5c b\u1ed9 thay v\u00ec nh\u1eadn d\u1eef li\u1ec7u t\u01b0\u01a1i m\u1edbi t\u1eeb m\u00e1y ch\u1ee7 DNS c\u1ee7a b\u1ea1n. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 gi\u1ea3m traffic v\u00e0 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u0103ng t\u1ed1c \u0111\u1ed9 duy\u1ec7t web<\/a>. V\u00ec th\u1ebf, ISP c\u00f3 th\u1ec3 c\u1ea7n t\u1eeb hai \u0111\u1ebfn ba ng\u00e0y \u0111\u1ec3 cache ho\u1eb7c c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS b\u1eb1ng c\u00e1ch b\u1ecf qua ho\u00e0n to\u00e0n c\u00e0i \u0111\u1eb7t TTL. Nh\u01b0ng c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y l\u00e0m gi\u1ea3m m\u1ea1nh t\u1ed1c \u0111\u1ed9 lan to\u1ea3, v\u00ec b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ee3i t\u1eeb 2 \u0111\u1ebfn 3 ng\u00e0y \u0111\u1ec3 c\u1eadp nh\u1eadt c\u00e1c thay \u0111\u1ed5i trong c\u00e1c b\u1ea3n ghi DNS c\u1ee7a b\u1ea1n.<\/li><li><strong>Th\u1ebf c\u00f2n nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n th\u00ec sao?<\/strong> H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n c\u1ed1 g\u1eafng c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n ghi DNS nhanh nh\u1ea5t c\u00f3 th\u1ec3. V\u00ed d\u1ee5 Verisign c\u1eadp nh\u1eadt c\u00e1c zone v\u1edbi t\u00ean mi\u1ec1n .com c\u1ee9 ba ph\u00fat m\u1ed7i l\u1ea7n. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng GoDaddy, c\u00e1c thay \u0111\u1ed5i trong nameserver c\u1ee7a t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn cho c\u00e1c nh\u00e0 \u0111\u0103ng k\u00fd trong v\u00f2ng v\u00e0i ph\u00fat, v\u00e0 c\u00e1c b\u1ea3n ghi nameserver c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n \u0111\u1ebfn c\u00e1c zone g\u1ed1c c\u1ee7a h\u1ecd. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 nh\u00e0 \u0111\u0103ng k\u00fd c\u1ea3nh gi\u00e1c v\u1edbi vi\u1ec7c c\u1eadp nh\u1eadt nhanh ch\u00f3ng c\u00e1c b\u1ea3n ghi DNS c\u1ee7a kh\u00e1ch h\u00e0ng b\u1edfi v\u00ec h\u1ecd lo l\u1eafng c\u00e1c h\u00e0nh \u0111\u1ed9ng nh\u01b0 v\u1eady c\u00f3 th\u1ec3 s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c name server g\u1ed1c c\u1ee7a h\u1ecd b\u1ecb l\u1ea1m d\u1ee5ng. \u0110i\u1ec1u h\u1ecd th\u01b0\u1eddng l\u00e0m trong t\u00ecnh hu\u1ed1ng n\u00e0y l\u00e0 thi\u1ebft l\u1eadp TTL cao l\u00ean \u0111\u1ebfn 48 gi\u1edd ho\u1eb7c h\u01a1n th\u00ec m\u1edbi refresh c\u00e1c b\u1ea3n ghi DNS c\u1ee7a kh\u00e1ch h\u00e0ng. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u00e1c nameserver recursive \u0111\u01b0\u1ee3c mong \u0111\u1ee3i l\u00e0 s\u1ebd kh\u00f4ng cache c\u00e1c b\u1ea3n ghi NS root (g\u1ed1c), nh\u01b0ng m\u1ed9t s\u1ed1 ISP v\u1eabn cache th\u00f4ng tin n\u00e0y, \u0111i\u1ec1u n\u00e0y cu\u1ed1i c\u00f9ng l\u00e0m ch\u1eadm th\u1eddi gian lan truy\u1ec1n nameserver.<\/li><\/ul>\n\n\n<p>PS: n\u1ebfu ki\u1ec3m tra DNS \u0111\u00e3 c\u1eadp nh\u1eadt IP m\u1edbi v\u00e0 domain v\u1eabn tr\u1ecf v\u1ec1 hosting c\u0169 th\u00ec c\u00f3 kh\u1ea3 n\u0103ng <a href=\"https:\/\/kiencang.net\/website-lau-nhan-ip\/\" target=\"_blank\" rel=\"noreferrer noopener\">do m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n v\u1eabn cache IP c\u0169<\/a>. Link v\u1eeba d\u1eabn c\u00f3 ch\u1ec9 c\u00e1ch kh\u1eafc ph\u1ee5c b\u1ea1n nh\u00e9.<\/p>\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft How Fast Do DNS Changes Propagate? c\u1ee7a DNSmap)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi b\u1ea1n \u0111\u0103ng k\u00fd m\u1ed9t t\u00ean mi\u1ec1n m\u1edbi, c\u00e1c nameserver s\u1ebd thay \u0111\u1ed5i. N\u00f3i c\u00e1ch kh\u00e1c, thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf DNS (Domain Name System \/ H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n), v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 mong \u0111\u1ee3i c\u00e1c thay \u0111\u1ed5i \u0111\u00f3 \u0111\u01b0\u1ee3c lan t\u1ecfa (propagate) trong v\u00f2ng 24 gi\u1edd. C\u00e0i \u0111\u1eb7t TTL (Time &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[265],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS &#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\/cap-nhat-dns-nhanh-cham\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Khi b\u1ea1n \u0111\u0103ng k\u00fd m\u1ed9t t\u00ean mi\u1ec1n m\u1edbi, c\u00e1c nameserver s\u1ebd thay \u0111\u1ed5i. N\u00f3i c\u00e1ch kh\u00e1c, thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf DNS (Domain Name System \/ H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n), v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 mong \u0111\u1ee3i c\u00e1c thay \u0111\u1ed5i \u0111\u00f3 \u0111\u01b0\u1ee3c lan t\u1ecfa (propagate) trong v\u00f2ng 24 gi\u1edd. C\u00e0i \u0111\u1eb7t TTL (Time &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/\" \/>\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=\"2020-08-04T07:19:28+00:00\" \/>\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=\"3 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS &#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\/cap-nhat-dns-nhanh-cham\/","og_locale":"vi_VN","og_type":"article","og_title":"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS &#8226; Ki\u1ebfn c\u00e0ng","og_description":"Khi b\u1ea1n \u0111\u0103ng k\u00fd m\u1ed9t t\u00ean mi\u1ec1n m\u1edbi, c\u00e1c nameserver s\u1ebd thay \u0111\u1ed5i. N\u00f3i c\u00e1ch kh\u00e1c, thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf DNS (Domain Name System \/ H\u1ec7 th\u1ed1ng ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n), v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 mong \u0111\u1ee3i c\u00e1c thay \u0111\u1ed5i \u0111\u00f3 \u0111\u01b0\u1ee3c lan t\u1ecfa (propagate) trong v\u00f2ng 24 gi\u1edd. C\u00e0i \u0111\u1eb7t TTL (Time &hellip;","og_url":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/","og_site_name":"Ki\u1ebfn c\u00e0ng","article_author":"https:\/\/www.facebook.com\/anhducnguyen87\/","article_published_time":"2020-08-04T07:19:28+00:00","author":"Nguy\u1ec5n \u0110\u1ee9c Anh","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"Nguy\u1ec5n \u0110\u1ee9c Anh","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"3 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/","url":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/","name":"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS &#8226; Ki\u1ebfn c\u00e0ng","isPartOf":{"@id":"https:\/\/kiencang.net\/#website"},"datePublished":"2020-08-04T07:19:28+00:00","dateModified":"2020-08-04T07:19:28+00:00","author":{"@id":"https:\/\/kiencang.net\/#\/schema\/person\/5e7e1a04d8d1218ad8c421ba43d25c16"},"breadcrumb":{"@id":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/kiencang.net\/cap-nhat-dns-nhanh-cham\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/kiencang.net\/"},{"@type":"ListItem","position":2,"name":"M\u1ee9c \u0111\u1ed9 nhanh ch\u00f3ng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt DNS"}]},{"@type":"WebSite","@id":"https:\/\/kiencang.net\/#website","url":"https:\/\/kiencang.net\/","name":"Ki\u1ebfn c\u00e0ng","description":"\u00d4m l\u00fd thuy\u1ebft, h\u00f4n th\u1ef1c h\u00e0nh","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/kiencang.net\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/kiencang.net\/#\/schema\/person\/5e7e1a04d8d1218ad8c421ba43d25c16","name":"Nguy\u1ec5n \u0110\u1ee9c Anh","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/kiencang.net\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/6d71f9b89393952a8382e30dad26c1ec?s=96&d=monsterid&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6d71f9b89393952a8382e30dad26c1ec?s=96&d=monsterid&r=g","caption":"Nguy\u1ec5n \u0110\u1ee9c Anh"},"description":"Sinh n\u0103m 1987, t\u1ed1t nghi\u1ec7p Cao \u0111\u1eb3ng th\u1ef1c h\u00e0nh FPT qu\u00e3ng 2014, chuy\u00ean ng\u00e0nh Thi\u1ebft k\u1ebf website. T\u00f4i th\u00edch Content, SEO, Ads, T\u0103ng t\u1ed1c website v\u00e0 Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed. B\u00ean c\u1ea1nh b\u00e0i t\u1ef1 vi\u1ebft, t\u00f4i c\u0169ng d\u1ecbch nhi\u1ec1u n\u1ed9i dung th\u00fa v\u1ecb c\u1ee7a c\u00e1c t\u00e1c gi\u1ea3 kh\u00e1c nhau. FB c\u00e1 nh\u00e2n: facebook.com\/anhducnguyen87. Email li\u00ean h\u1ec7: guiemailchotoi@gmail.com","sameAs":["https:\/\/www.facebook.com\/anhducnguyen87\/"],"url":"https:\/\/kiencang.net\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/16172"}],"collection":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/comments?post=16172"}],"version-history":[{"count":0,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/16172\/revisions"}],"wp:attachment":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/media?parent=16172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/categories?post=16172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/tags?post=16172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}