{"id":11938,"date":"2022-01-23T16:06:00","date_gmt":"2022-01-23T09:06:00","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11938"},"modified":"2023-07-23T19:39:10","modified_gmt":"2023-07-23T12:39:10","slug":"cdn-la-gi","status":"publish","type":"post","link":"https:\/\/kiencang.net\/cdn-la-gi\/","title":{"rendered":"CDN l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n n\u00ean s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 t\u0103ng t\u1ed1c website c\u0169ng nh\u01b0 \u0111\u1ea3m b\u1ea3o uptime cao nh\u1ea5t c\u00f3 th\u1ec3"},"content":{"rendered":"\n<p>Khi t\u01b0 v\u1ea5n <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 website<\/a>, kh\u1ea3 n\u0103ng cao b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ec1 ngh\u1ecb s\u1eed d\u1ee5ng CDN, v\u00ec n\u00f3 th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 trang t\u1ed1t nh\u1ea5t. Khi \u1ea5y ch\u1eafc ch\u1eafn b\u1ea1n s\u1ebd t\u1ef1 h\u1ecfi <em>CDN l\u00e0 g\u00ec v\u1eady<\/em>?<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>Content Delivery Network (M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung), vi\u1ebft t\u1eaft l\u00e0 CDN, l\u00e0 m\u1ed9t m\u1ea1ng g\u1ed3m nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf <em>c\u00e1c v\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi<\/em> v\u1edbi m\u1ee5c \u0111\u00edch ph\u00e2n ph\u1ed1i n\u1ed9i dung s\u1ed1 cho ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i nhanh nh\u1ea5t c\u00f3 th\u1ec3. <\/p>\n<\/blockquote>\n\n\n\n<p>Khi ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n m\u1ed9t y\u00eau c\u1ea7u t\u1edbi m\u00e1y ch\u1ee7 CDN g\u1ea7n nh\u1ea5t, \u0111i\u1ec1u \u0111\u00f3 gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 <strong>\u0111\u1ed9 tr\u1ec5 m\u1ea1ng<\/strong> (latency). CDN cho ph\u00e9p t\u1ea5t c\u1ea3 ng\u01b0\u1eddi truy c\u1eadp, kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1 l\u00e0 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a h\u1ecd \u1edf \u0111\u00e2u, c\u00f3 \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 t\u1ea3i n\u1ed9i dung nhanh h\u01a1n v\u00e0 \u0111i\u1ec1u \u0111\u00f3 ch\u1eafc ch\u1eafn s\u1ebd c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>Theo BuiltWith, 66% trong s\u1ed1 10 ng\u00e0n trang web h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi s\u1eed d\u1ee5ng CDN (th\u00e1ng m\u01b0\u1eddi m\u1ed9t n\u0103m 2018). T\u1ef7 l\u1ec7 n\u00e0y ti\u1ebfp t\u1ee5c gia t\u0103ng trong su\u1ed1t 10 n\u0103m qua do c\u00f3 s\u1ef1 t\u0103ng tr\u01b0\u1edfng ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m n\u1ed9i dung s\u1ed1, v\u00e0 y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng c\u0169ng cao h\u01a1n. S\u1eed d\u1ee5ng CDN l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 ph\u00e2n ph\u1ed1i n\u1ed9i dung v\u1edbi hi\u1ec7u su\u1ea5t\/t\u1ed1c \u0111\u1ed9 (performance) v\u00e0 \u0111\u1ed9 tin c\u1eady (reliability) cao tr\u00ean quy m\u00f4 to\u00e0n c\u1ea7u.<\/p>\n\n\n\n<p>Trong th\u1ef1c t\u1ebf, theo m\u1ed9t nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi \u0110\u1ea1i h\u1ecdc Nebraska th\u00ec th\u1eddi gian ch\u1edd \u0111\u1ee3i ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ec3 c\u00f3 th\u00f4ng tin t\u1eeb website ch\u1ec9 c\u00f3 x\u1ea5p x\u1ec9 2 gi\u00e2y m\u00e0 th\u00f4i.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\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-6577d61aace56\" ><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-6577d61aace56\"  type=\"checkbox\" id=\"item-6577d61aace56\"><\/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\/cdn-la-gi\/#1_Cau_truc_CDN_%E2%80%93_Tim_hieu_co_so_ha_tang_dang_sau_CDN\" title=\"#1. C\u1ea5u tr\u00fac CDN &#8211; T\u00ecm hi\u1ec3u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1eb1ng sau CDN\">#1. C\u1ea5u tr\u00fac CDN &#8211; T\u00ecm hi\u1ec3u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1eb1ng sau CDN<\/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\/cdn-la-gi\/#2_CDN_hoat_dong_nhu_the_nao_%E2%80%93_biet_duoc_tam_quan_trong_cua_viec_co_duoc_noi_dung_gan_nguoi_dung_hon\" title=\"#2. CDN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o &#8211; bi\u1ebft \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c c\u00f3 \u0111\u01b0\u1ee3c n\u1ed9i dung g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n\">#2. CDN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o &#8211; bi\u1ebft \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c c\u00f3 \u0111\u01b0\u1ee3c n\u1ed9i dung g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n<\/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\/cdn-la-gi\/#3_Khi_khong_co_CDN\" title=\"#3. Khi kh\u00f4ng c\u00f3 CDN\">#3. Khi kh\u00f4ng c\u00f3 CDN<\/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\/cdn-la-gi\/#4_Khi_ban_dung_CDN\" title=\"#4. Khi b\u1ea1n d\u00f9ng CDN\">#4. Khi b\u1ea1n d\u00f9ng CDN<\/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\/cdn-la-gi\/#5_Cac_kieu_noi_dung\" title=\"#5. C\u00e1c ki\u1ec3u n\u1ed9i dung\">#5. C\u00e1c ki\u1ec3u n\u1ed9i dung<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kiencang.net\/cdn-la-gi\/#6_Tai_sao_ban_can_CDN_%E2%80%93_Biet_ve_loi_ich_khi_su_dung_CDN\" title=\"#6. T\u1ea1i sao b\u1ea1n c\u1ea7n CDN &#8211; Bi\u1ebft v\u1ec1 l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng CDN\">#6. T\u1ea1i sao b\u1ea1n c\u1ea7n CDN &#8211; Bi\u1ebft v\u1ec1 l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng CDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kiencang.net\/cdn-la-gi\/#7_Muc_do_kho_khan_trong_viec_thiet_lap\" title=\"#7. M\u1ee9c \u0111\u1ed9 kh\u00f3 kh\u0103n trong vi\u1ec7c thi\u1ebft l\u1eadp\">#7. M\u1ee9c \u0111\u1ed9 kh\u00f3 kh\u0103n trong vi\u1ec7c thi\u1ebft l\u1eadp<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/kiencang.net\/cdn-la-gi\/#8_So_sanh_su_khac_nhau_giua_hosting_thong_thuong_host_tot_va_host_tot_ket_hop_CDN\" title=\"#8. So s\u00e1nh s\u1ef1 kh\u00e1c nhau gi\u1eefa hosting th\u00f4ng th\u01b0\u1eddng, host t\u1ed1t, v\u00e0 host t\u1ed1t k\u1ebft h\u1ee3p CDN\">#8. So s\u00e1nh s\u1ef1 kh\u00e1c nhau gi\u1eefa hosting th\u00f4ng th\u01b0\u1eddng, host t\u1ed1t, v\u00e0 host t\u1ed1t k\u1ebft h\u1ee3p CDN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/kiencang.net\/cdn-la-gi\/#9_Mot_so_cau_hoi\" title=\"#9. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi\">#9. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"c\u1ea5u-truc-cdn-tim-hi\u1ec3u-c\u01a1-s\u1edf-h\u1ea1-t\u1ea7ng-d\u1eb1ng-sau-cdn\"><span class=\"ez-toc-section\" id=\"1_Cau_truc_CDN_%E2%80%93_Tim_hieu_co_so_ha_tang_dang_sau_CDN\"><\/span>#1. C\u1ea5u tr\u00fac CDN &#8211; T\u00ecm hi\u1ec3u c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1eb1ng sau CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"699\" height=\"466\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/04\/web-co-CDN.png\" alt=\"website c\u00f3 CDN\" class=\"wp-image-13812\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/04\/web-co-CDN.png 699w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/04\/web-co-CDN-300x200.png 300w\" sizes=\"(max-width: 699px) 100vw, 699px\" \/><figcaption class=\"wp-element-caption\">Website khi c\u00f3 CDN, \u1ea3nh t\u1eeb CloudFare<\/figcaption><\/figure><\/div>\n\n\n<p>\u1ede m\u1ee9c \u0111\u1ed9 chuy\u00ean nghi\u1ec7p, c\u1ea5u tr\u00fac CDN \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u1edd hai y\u1ebfu t\u1ed1 ch\u00ednh, \u0111\u00f3 l\u00e0 \u0111i\u1ec3m hi\u1ec7n di\u1ec7n (PoP\/Point of Presence) v\u00e0 <a href=\"https:\/\/kiencang.net\/may-chu-bien-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c m\u00e1y ch\u1ee7 bi\u00ean (edge servers)<\/a>. Ngo\u00e0i ra c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u c\u00f4ng vi\u1ec7c kh\u00e1c \u0111\u1ec3 vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c, h\u1ea1n ch\u1ebf c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng, v\u00e0 <a href=\"https:\/\/kiencang.net\/website-uptime\/\" target=\"_blank\" rel=\"noreferrer noopener\">duy tr\u00ec th\u1eddi gian uptime li\u00ean t\u1ee5c<\/a>.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"di\u1ec3m-hi\u1ec7n-di\u1ec7n\">1. \u0110i\u1ec3m hi\u1ec7n di\u1ec7n<\/h3>\n\n\n\n<p>\u0110i\u1ec3m hi\u1ec7n di\u1ec7n t\u00ean ti\u1ebfng Anh l\u00e0 Point of Presence, vi\u1ebft t\u1eaft l\u00e0 PoP, l\u00e0 m\u1ed9t \u0111i\u1ec3m \u0111\u1ecba l\u00fd ri\u00eang l\u1ebb n\u01a1i m\u1ed9t nh\u00f3m m\u00e1y ch\u1ee7 bi\u00ean CDN n\u1eb1m \u1edf \u0111\u1ea5y (b\u1ea1n s\u1ebd bi\u1ebft m\u00e1y ch\u1ee7 bi\u00ean l\u00e0 g\u00ec ngay b\u00ean d\u01b0\u1edbi). <\/p>\n\n\n\n<p>Nhi\u1ec1u PoP k\u1ebft h\u1ee3p l\u1ea1i t\u1ea1o th\u00e0nh to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. T\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng PoP t\u1ea1o n\u00ean CDN c\u0169ng nh\u01b0 t\u1eebng v\u1ecb tr\u00ed c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn ph\u1ea1m vi bao ph\u1ee7 to\u00e0n c\u1ea7u c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"may-ch\u1ee7-bien\">2. M\u00e1y ch\u1ee7 bi\u00ean<\/h3>\n\n\n\n<p>M\u1ed9t m\u00e1y ch\u1ee7 bi\u00ean, l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 n\u1eb1m gi\u1eefa hai m\u1ea1ng, \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i m\u1ed7i PoP. C\u00e1c m\u00e1y ch\u1ee7 bi\u00ean l\u00e0 m\u1ed9t proxy cache \u0111\u01a1n gi\u1ea3n ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 <a href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t web<\/a>. Ch\u00fang kh\u00f4ng t\u1ea1o n\u1ed9i dung cho website, thay v\u00ec th\u1ebf, ch\u00fang gi\u1eef b\u1ea3n sao n\u1ed9i dung trong cache. T\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 bi\u00ean t\u1ea1i t\u1eebng v\u1ecb tr\u00ed PoP c\u00f2n t\u00f9y thu\u1ed9c v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a t\u1eebng nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN.<\/p>\n\n\n\n<p>S\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a PoP thay \u0111\u1ed5i t\u1eeb nh\u00e0 cung c\u1ea5p CDN n\u00e0y \u0111\u1ebfn nh\u00e0 cung c\u1ea5p CDN kh\u00e1c. M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p th\u00edch bao ph\u1ee7 v\u1ecb tr\u00ed nhi\u1ec1u h\u01a1n b\u1eb1ng c\u00e1ch gia t\u0103ng c\u00e1c m\u00e1y ch\u1ee7 c\u00f4ng su\u1ea5t nh\u1ecf, trong khi nh\u1eefng d\u1ecbch v\u1ee5 CDN kh\u00e1c l\u1ea1i h\u01b0\u1edbng \u0111\u1ebfn vi\u1ec7c duy tr\u00ec \u00edt PoP h\u01a1n nh\u01b0ng l\u1ea1i l\u00e0 c\u00e1c PoP c\u00f3 hi\u1ec7u su\u1ea5t cao. <\/p>\n\n\n\n<p>M\u1ed9t trong c\u00e1c kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ea7n \u0111\u00e1nh gi\u00e1 khi ph\u00e2n t\u00edch ki\u1ebfn tr\u00fac CDN l\u00e0 ph\u1ea3i bi\u1ebft \u0111\u01b0\u1ee3c PoP c\u1ee7a n\u00f3 n\u1eb1m \u1edf \u0111\u00e2u. S\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi truy c\u1eadp website ch\u1ee7 y\u1ebfu \u0111\u1ebfn t\u1eeb \u0111\u00e2u c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn d\u1ecbch v\u1ee5 n\u00e0o. <\/p>\n\n\n\n<p>V\u00ed d\u1ee5 nh\u01b0 b\u1ea1n c\u00f3 ng\u01b0\u1eddi d\u00f9ng ch\u1ee7 y\u1ebfu t\u1eeb Vi\u1ec7t Nam th\u00ec d\u1ecbch v\u1ee5 CDN b\u1ea1n n\u00ean d\u00f9ng c\u0169ng c\u1ea7n ph\u1ea3i c\u00f3 m\u00e1y ch\u1ee7 \u1edf Vi\u1ec7t Nam (ho\u1eb7c \u00edt nh\u1ea5t l\u00e0 g\u1ea7n Vi\u1ec7t Nam), n\u1ebfu kh\u00f4ng t\u1ed1c \u0111\u1ed9 c\u1ea3i thi\u1ec7n s\u1ebd kh\u00f4ng t\u1ed1t nh\u1ea5t trong kh\u1ea3 n\u0103ng. <\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cdn-ho\u1ea1t-d\u1ed9ng-nh\u01b0-th\u1ebf-nao-bi\u1ebft-d\u01b0\u1ee3c-t\u1ea7m-quan-tr\u1ecdng-c\u1ee7a-vi\u1ec7c-co-d\u01b0\u1ee3c-n\u1ed9i-dung-g\u1ea7n-ng\u01b0\u1eddi-dung-h\u01a1n\"><span class=\"ez-toc-section\" id=\"2_CDN_hoat_dong_nhu_the_nao_%E2%80%93_biet_duoc_tam_quan_trong_cua_viec_co_duoc_noi_dung_gan_nguoi_dung_hon\"><\/span>#2. CDN ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o &#8211; bi\u1ebft \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c c\u00f3 \u0111\u01b0\u1ee3c n\u1ed9i dung g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Nh\u01b0 \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00f3i \u1edf tr\u00ean, CDN l\u00e0 m\u1ea1ng l\u01b0\u1edbi l\u1edbn \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb nhi\u1ec1u m\u00e1y ch\u1ee7 \u1edf c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau. C\u00e1c PoP \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n khu v\u1ef1c \u0111\u00f4ng \u0111\u00fac, trong c\u00e1c qu\u1ed1c gia tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. <\/p>\n\n\n\n<p>V\u1edbi c\u00e1c qu\u1ed1c gia c\u00f3 di\u1ec7n t\u00edch r\u1ed9ng l\u1edbn, th\u00ec ngay trong n\u00f3 c\u0169ng c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u PoP kh\u00e1c nhau (M\u1ef9, Trung Qu\u1ed1c c\u00f3 nhi\u1ec1u m\u00e1y ch\u1ee7 CDN \u0111\u1eb7t kh\u1eafp n\u01a1i trong l\u00e3nh th\u1ed5, l\u00fd do l\u00e0 v\u00ec di\u1ec7n t\u00edch c\u1ee7a h\u1ecd r\u1ea5t r\u1ed9ng l\u1edbn. Vi\u1ec7t Nam ch\u00fang ta c\u00f3 di\u1ec7n t\u00edch nh\u1ecf h\u01a1n nhi\u1ec1u nh\u01b0ng m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 CDN c\u0169ng \u0111\u1eb7t v\u1ecb tr\u00ed t\u1ea1i 3 n\u01a1i tr\u1ecdng y\u1ebfu l\u00e0 H\u00e0 N\u1ed9i, \u0110\u00e0 N\u1eb5ng v\u00e0 S\u00e0i G\u00f2n).<\/p>\n\n\n\n<p>L\u00fd t\u01b0\u1edfng nh\u1ea5t l\u00e0 chuy\u1ec3n ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn PoP n\u00e0o m\u00e0 g\u1ea7n h\u1ecd nh\u1ea5t. Khi ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u n\u1ed9i dung t\u1eeb trang s\u1eed d\u1ee5ng CDN, y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn PoP g\u1ea7n nh\u1ea5t, n\u01a1i m\u00e1y ch\u1ee7 web bi\u00ean g\u1eedi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u. C\u00f3 v\u00e0i c\u00e1ch kh\u00e1c nhau \u0111\u1ec3 y\u00eau c\u1ea7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn t\u1edbi PoP c\u1ee5 th\u1ec3, m\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0 <a href=\"https:\/\/kiencang.net\/anycast-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">IP Anycast<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"khi-khong-co-cdn\"><span class=\"ez-toc-section\" id=\"3_Khi_khong_co_CDN\"><\/span>#3. Khi kh\u00f4ng c\u00f3 CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Khi CDN kh\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean web, t\u1ea5t c\u1ea3 n\u1ed9i dung s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i qua <a href=\"https:\/\/kiencang.net\/may-chu-goc\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u00e1y ch\u1ee7 g\u1ed1c duy nh\u1ea5t<\/a>, cho d\u00f9 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i c\u00f3 \u1edf \u0111\u00e2u \u0111i ch\u0103ng n\u1eefa. <\/p>\n\n\n\n<p>\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu m\u00e1y ch\u1ee7 g\u1ed1c \u1edf Hoa K\u1ef3, th\u00ec ng\u01b0\u1eddi d\u00f9ng \u1edf Vi\u1ec7t Nam, Nh\u1eadt, hay H\u00e0n \u0111\u1ec1u l\u1ea5y n\u1ed9i dung t\u1eeb c\u00f9ng m\u00e1y ch\u1ee7 g\u1ed1c duy nh\u1ea5t xa x\u00f4i \u0111\u00f3. <\/p>\n\n\n\n<p>Kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd gi\u1eefa v\u1ecb tr\u00ed g\u1eedi y\u00eau c\u1ea7u v\u00e0 v\u1ecb tr\u00ed m\u00e1y ch\u1ee7 g\u1ed1c ph\u1ea3n h\u1ed3i c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"khi-b\u1ea1n-dung-cdn\"><span class=\"ez-toc-section\" id=\"4_Khi_ban_dung_CDN\"><\/span>#4. Khi b\u1ea1n d\u00f9ng CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Khi CDN \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, t\u1ea5t c\u1ea3 n\u1ed9i dung s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i b\u1edfi c\u00e1c PoP g\u1ea7n nh\u1ea5t v\u1edbi v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a y\u00eau c\u1ea7u (t\u1eeb ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i). <\/p>\n\n\n\n<p>\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0, cho d\u00f9 m\u00e1y ch\u1ee7 g\u1ed1c \u1edf Hoa K\u1ef3, nh\u01b0ng ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i \u1edf Vi\u1ec7t Nam, Nh\u1eadt hay H\u00e0n s\u1ebd l\u1ea5y n\u1ed9i dung t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 bi\u00ean CDN n\u1eb1m t\u1ea1i ch\u00ednh qu\u1ed1c gia \u0111\u00f3 (ho\u1eb7c c\u00e1c PoP \u1edf g\u1ea7n \u0111\u00f3 nh\u1ea5t). <\/p>\n\n\n\n<p>Kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n gi\u1eefa v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd g\u1eedi y\u00eau c\u1ea7u v\u00e0 m\u00e1y ch\u1ee7 bi\u00ean CDN g\u1eedi ph\u1ea3n h\u1ed3i gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian t\u1ea3i trang t\u00ednh tr\u00ean t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cac-ki\u1ec3u-n\u1ed9i-dung\"><span class=\"ez-toc-section\" id=\"5_Cac_kieu_noi_dung\"><\/span>#5. C\u00e1c ki\u1ec3u n\u1ed9i dung<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Khi ph\u00e2n t\u00edch c\u00e1c \u0111\u1ecbnh d\u1ea1ng n\u1ed9i dung chi\u1ebfm nhi\u1ec1u b\u0103ng th\u00f4ng nh\u1ea5t m\u00e0 ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ea7u s\u1eed d\u1ee5ng, ng\u01b0\u1eddi ta ph\u00e1t hi\u1ec7n th\u1ea5y ba ki\u1ec3u \u0111\u1ee9ng \u0111\u1ea7u l\u00e0 <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-toc-do-tai-anh\/\">\u1ea3nh<\/a>, video v\u00e0 \u00e2m thanh (audio). <\/p>\n\n\n\n<p>D\u1ea7u v\u1eady c\u00f3 nhi\u1ec1u ki\u1ec3u n\u1ed9i dung kh\u00e1c m\u00e0 CDN c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i \u0111\u01b0\u1ee3c. S\u1ed1 l\u01b0\u1ee3ng ki\u1ec3u n\u1ed9i dung v\u00e0 \u0111\u1ecbnh d\u1ea1ng m\u00e0 nh\u00e0 cung c\u1ea5p CDN c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 c\u00f2n t\u00f9y thu\u1ed9c v\u00e0o ch\u00ednh d\u1ecbch v\u1ee5 \u0111\u00f3 (thay \u0111\u1ed5i t\u1eeb nh\u00e0 cung c\u1ea5p n\u00e0y sang nh\u00e0 cung c\u1ea5p kh\u00e1c) tuy v\u1eady v\u1eabn c\u00f3 c\u00e1c \u0111\u1ecbnh d\u1ea1ng chung \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n<ul class=\"mb-0\">\n<li>\u1ea2nh: <a href=\"https:\/\/kiencang.net\/gif-png-jpg-hoac-svg\/\" target=\"_blank\" rel=\"noreferrer noopener\">PNG, JPG, SVG, GIF<\/a>, v\u00e0 TIF.<\/li>\n\n\n\n<li>Video: FLV, HSL, MP4, MOV, v\u00e0 WMV.<\/li>\n\n\n\n<li>Audio: MP3, WAV, AIFF, AAC, v\u00e0 PCM.<\/li>\n\n\n\n<li>Kh\u00e1c: CSS, JS, JSON, HTML, PDF, ZIP, TTF, OTF, v\u00e0 WOFF (<a href=\"https:\/\/kiencang.net\/font-cho-web-va-toc-do-tai-trang\/\" target=\"_blank\" rel=\"noreferrer noopener\">font cho web<\/a>).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"t\u1ea1i-sao-b\u1ea1n-c\u1ea7n-cdn-bi\u1ebft-v\u1ec1-l\u1ee3i-ich-khi-s\u1eed-d\u1ee5ng-cdn\"><span class=\"ez-toc-section\" id=\"6_Tai_sao_ban_can_CDN_%E2%80%93_Biet_ve_loi_ich_khi_su_dung_CDN\"><\/span>#6. T\u1ea1i sao b\u1ea1n c\u1ea7n CDN &#8211; Bi\u1ebft v\u1ec1 l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c\u1ea3i-thi\u1ec7n-hi\u1ec7u-su\u1ea5t-t\u1ed1c-d\u1ed9\">1. C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t\/t\u1ed1c \u0111\u1ed9<\/h3>\n\n\n\n<p>Hi\u1ec7u su\u1ea5t\/t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n l\u00e0 m\u1ed9t trong c\u00e1c l\u1ee3i \u00edch quan tr\u1ecdng nh\u1ea5t khi tri\u1ec3n khai CDN. N\u1ed9i dung \u0111\u01b0\u1ee3c cache trong c\u00e1c PoP tr\u00ean to\u00e0n c\u1ea7u \u0111em n\u1ed9i dung \u0111\u1ebfn g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n. Kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 m\u00e0 c\u00f2n gi\u1ea3m thi\u1ec3u c\u00e1c g\u00f3i d\u1eef li\u1ec7u b\u1ecb m\u1ea5t. <\/p>\n\n\n\n<p>N\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n \u0111\u1ebfn t\u1eeb kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, vi\u1ec7c s\u1eed d\u1ee5ng CDN l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Khi th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra kh\u00e1c nhau \u1edf nhi\u1ec1u v\u00f9ng \u0111\u1ecba l\u00fd, ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y CDN l\u00e0m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 website \u0111i 73% tr\u00ean trung b\u00ecnh so v\u1edbi website kh\u00f4ng c\u00f3 CDN.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tang-d\u1ed9-tin-c\u1eady\">2. T\u0103ng \u0111\u1ed9 tin c\u1eady<\/h3>\n\n\n\n<p>V\u1edbi CDN, c\u00e1c y\u00eau c\u1ea7u s\u1ebd lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn t\u1edbi v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd g\u1ea7n nh\u1ea5t. N\u1ebfu m\u1ed9t m\u00e1y ch\u1ee7 bi\u00ean kh\u00f4ng kh\u1ea3 d\u1ee5ng, c\u00e1c y\u00eau c\u1ea7u s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n qua m\u00e1y ch\u1ee7 bi\u00ean c\u00f3 kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng ngay b\u00ean c\u1ea1nh. <\/p>\n\n\n\n<p>\u0110i\u1ec1u n\u00e0y t\u1ea1o ra kh\u1ea3 n\u0103ng d\u1ef1 ph\u00f2ng t\u1ef1 \u0111\u1ed9ng gi\u00fap \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u1ed9i dung lu\u00f4n s\u1eb5n c\u00f3. N\u1ebfu kh\u00f4ng c\u00f3 ki\u1ec3u d\u1ef1 ph\u00f2ng n\u00e0y, ng\u01b0\u1eddi truy c\u1eadp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00f3n ch\u00e0o b\u1edfi m\u1ed9t trang l\u1ed7i, c\u00e1i s\u1ebd \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u1ecd s\u1ebd quay tr\u1edf l\u1ea1i.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tang-quy-mo-d\u1ec5-dang\">3. T\u0103ng quy m\u00f4 d\u1ec5 d\u00e0ng<\/h3>\n\n\n\n<p>Gi\u1ea3m t\u1ea3i l\u01b0u l\u01b0\u1ee3ng th\u00f4ng qua s\u1eed d\u1ee5ng CDN s\u1ebd gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng qu\u1ea3n tr\u1ecb c\u00e1c l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng \u0111\u1ed9t bi\u1ebfn h\u01a1n v\u00e0 vi\u1ec7c t\u0103ng hay gi\u1ea3m ch\u1ec9 c\u1ea7n t\u1ed1n l\u01b0\u1ee3ng th\u1eddi gian ng\u1eafn tri\u1ec3n khai. <\/p>\n\n\n\n<p>K\u1ebft qu\u1ea3 l\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c \u0111\u01b0\u1ee3c gi\u1ea3m t\u1ea3i v\u00e0 gi\u00fap <a href=\"https:\/\/kiencang.net\/website-uptime\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i thi\u1ec3u h\u00f3a hi\u1ec7n t\u01b0\u1ee3ng downtime (gi\u00e1n \u0111o\u1ea1n truy c\u1eadp)<\/a>. Website th\u00f4ng th\u01b0\u1eddng c\u00f3 \u0111\u1ebfn x\u1ea5p x\u1ec9 80% l\u00e0 n\u1ed9i dung t\u0129nh, do v\u1eady m\u00e0 c\u00f3 m\u1ed9t ph\u1ea7n \u0111\u00e1ng k\u1ec3 c\u00e1c ph\u1ea7n tr\u00ean web \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i nhanh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n th\u00f4ng qua CDN.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"gia-tang-b\u1ea3o-m\u1eadt\">4. Gia t\u0103ng b\u1ea3o m\u1eadt<\/h3>\n\n\n\n<p>Khi s\u1eed d\u1ee5ng CDN, ph\u1ea7n l\u1edbn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c ph\u1ee5c v\u1ee5 b\u1edfi m\u00e1y ch\u1ee7 g\u1ed1c n\u1eefa, m\u00e0 l\u00e0 m\u00e1y ch\u1ee7 bi\u00ean CDN, \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c gi\u1ea3m t\u1ea3i.<\/p>\n\n\n\n<p>Ch\u1ee9ng ch\u1ec9 TLS, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <a href=\"https:\/\/kiencang.net\/chung-chi-ssl-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">ch\u1ee9ng ch\u1ec9 SSL<\/a>, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean h\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng CDN \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u00e3 m\u00e3 h\u00f3a b\u1ea3o m\u1eadt. H\u01a1n n\u1eefa, nhi\u1ec1u d\u1ecbch v\u1ee5 CDN c\u00f3 <a href=\"https:\/\/kiencang.net\/bao-mat-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt<\/a> b\u1ed5 sung nh\u01b0 ch\u1ed1ng hotlink, b\u1ea3o m\u1eadt b\u1eb1ng tokens, v\u00e0 nhi\u1ec1u th\u1ee9 kh\u00e1c \u0111\u1ec3 ch\u1ed1ng l\u1ea1i v\u1ea5n \u0111\u1ec1 x\u00e2m nh\u1eadp t\u1eeb b\u00ean th\u1ee9 ba.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"gia-r\u1ebb\">5. Gi\u00e1 r\u1ebb<\/h3>\n\n\n\n<p>Khi d\u00f9ng CDN, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i qu\u1ea3n l\u00fd h\u1ea1 t\u1ea7ng, v\u00ec \u0111i\u1ec1u \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN r\u1ed3i. \u0110i\u1ec1u \u0111\u00f3 lo\u1ea1i b\u1ecf b\u1ea5t k\u1ef3 v\u1ed1n \u0111\u1ea7u t\u01b0 tr\u1ea3 tr\u01b0\u1edbc n\u00e0o, c\u0169ng nh\u01b0 chi ph\u00ed duy tr\u00ec v\u00e0 cho ph\u00e9p b\u1ea1n c\u00f3 th\u1eddi gian \u0111\u1ec3 \u01b0u ti\u00ean nh\u1eefng c\u00f4ng vi\u1ec7c kh\u00e1c.<\/p>\n\n\n\n<p>Chi ph\u00ed b\u0103ng th\u00f4ng c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c gi\u1ea3m xu\u1ed1ng b\u1edfi v\u00ec n\u1ed9i dung \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i b\u1edfi m\u00e1y ch\u1ee7 bi\u00ean CDN. Do v\u1eady, kh\u00f4ng c\u00f3 nhi\u1ec1u nhu c\u1ea7u c\u1eadp nh\u1eadt l\u00ean <a href=\"https:\/\/kiencang.net\/mua-hosting-cho-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">hosting kh\u1ecfe h\u01a1n<\/a> v\u00ec th\u1ef1c t\u1ebf l\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3m t\u1ea3i r\u1ea5t nhi\u1ec1u th\u00f4ng qua m\u00e1y ch\u1ee7 bi\u00ean CDN cache n\u1ed9i dung.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tang-chuy\u1ec3n-d\u1ed5i\">6. T\u0103ng chuy\u1ec3n \u0111\u1ed5i<\/h3>\n\n\n\n<p>C\u00f3 r\u1ea5t nhi\u1ec1u b\u1eb1ng ch\u1ee9ng cho th\u1ea5y vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 website, game, hay b\u1ea5t k\u1ef3 ki\u1ec3u n\u1ed9i dung s\u1ed1 n\u00e0o c\u0169ng s\u1ebd l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra ch\u1ee7 y\u1ebfu b\u1edfi v\u00ec tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n\n\n\n<p>Theo nh\u01b0 LoadStorm, ch\u1ec9 m\u1ed9t gi\u00e2y t\u0103ng th\u00eam trong vi\u1ec7c t\u1ea3i trang trung b\u00ecnh s\u1ebd d\u1eabn \u0111\u1ebfn gi\u1ea3m 7% t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i. S\u1eed d\u1ee5ng CDN c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ec3 gi\u00fap b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111\u01a1n h\u00e0ng h\u01a1n.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"gi\u1ea3m-nguy-c\u01a1-r\u1eddi-b\u1ecf-trang\">7. Gi\u1ea3m nguy c\u01a1 r\u1eddi b\u1ecf trang<\/h3>\n\n\n\n<p>C\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 g\u00f3p ph\u1ea7n v\u00e0o t\u1ef7 l\u1ec7 r\u1eddi b\u1ecf trang cao (bounce rate), ch\u1eb3ng h\u1ea1n nh\u01b0 chuy\u1ec3n h\u01b0\u1edbng, giao di\u1ec7n, v\u00e0 <a href=\"https:\/\/kiencang.net\/tinh-kha-dung-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u00ednh kh\u1ea3 d\u1ee5ng<\/a>. M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t l\u00e0 t\u1ed5ng th\u1eddi gian n\u00f3 c\u1ea7n \u0111\u1ec3 t\u1ea3i n\u1ed9i dung v\u1ec1. Theo Web Performance Today, 57% kh\u00e1ch h\u00e0ng tr\u1ef1c tuy\u1ebfn s\u1ebd r\u1eddi b\u1ecf m\u1ed9t website t\u1ed1n h\u01a1n 3 gi\u00e2y \u0111\u1ec3 t\u1ea3i v\u1ec1.<\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng CDN c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 g\u1eafn k\u1ebft c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng c\u00e1ch gi\u1ea3m nguy c\u01a1 r\u1eddi b\u1ecf trang. \u0110i\u1ec1u n\u00e0y v\u1ec1 sau l\u1ea1i d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng <a href=\"https:\/\/kiencang.net\/cach-thang-hang-website-tren-google\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng tr\u00ean m\u00e1y t\u00ecm ki\u1ebfm<\/a>, gia t\u0103ng \u0111\u01a1n h\u00e0ng, v\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n<p><strong>Ph\u1ea3n bi\u1ec7n<\/strong>: tuy v\u1eady <a href=\"https:\/\/kiencang.net\/nhuoc-diem-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN c\u0169ng c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m<\/a>, nh\u1ea5t khi b\u1ea1n tri\u1ec3n khai n\u00f3 theo ki\u1ec3u phong tr\u00e0o, link v\u1eeba d\u1eabn cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 v\u1ea5n \u0111\u1ec1 \u0111\u00f3.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"m\u1ee9c-d\u1ed9-kho-khan-trong-vi\u1ec7c-thi\u1ebft-l\u1eadp\"><span class=\"ez-toc-section\" id=\"7_Muc_do_kho_khan_trong_viec_thiet_lap\"><\/span>#7. M\u1ee9c \u0111\u1ed9 kh\u00f3 kh\u0103n trong vi\u1ec7c thi\u1ebft l\u1eadp<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u1ea5t k\u1ef3 d\u1ecbch v\u1ee5 CDN n\u00e0o c\u0169ng s\u1ebd y\u00eau c\u1ea7u thi\u1ebft l\u1eadp m\u00e0 trong \u0111\u00f3 <a href=\"https:\/\/kiencang.net\/rac-roi-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00f3 m\u1ed9t s\u1ed1 b\u01b0\u1edbc nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 l\u00e0m b\u1ea1n c\u1ea3m th\u1ea5y b\u1ed1i r\u1ed1i, b\u1ef1c b\u1ed9i<\/a> v\u00ec kh\u00f4ng quen thu\u1ed9c. N\u00f3 ch\u1eb3ng ph\u1ea3i l\u00e0 c\u00e1i g\u00ec \u0111\u00f3 ch\u1ec9 m\u1ea5t c\u00f3 5 ph\u00fat l\u00e0 l\u00e0m xong \u0111\u00e2u (d\u00f9 n\u01a1i b\u00e1n d\u1ecbch v\u1ee5 th\u01b0\u1eddng n\u00f3i nh\u01b0 v\u1eady!). <\/p>\n\n\n\n<p>B\u1ea1n s\u1ebd c\u1ea7n b\u1ecf \u00edt nh\u1ea5t l\u00e0 v\u00e0i ti\u1ebfng \u0111\u1ed3ng h\u1ed3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n thi\u1ebft l\u1eadp v\u00e0 b\u1eaft \u0111\u1ea7u kh\u1edfi ch\u1ea1y. B\u1ea1n c\u0169ng s\u1ebd ph\u1ea3i b\u1ecf th\u1eddi gian h\u1ecdc thu\u1eadt ng\u1eef m\u1edbi, h\u1ecdc c\u00e1ch ki\u1ec3m tra \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 \u0111ang \u0111\u01b0\u1ee3c l\u00e0m ch\u00ednh x\u00e1c (CDN n\u1ebfu kh\u00f4ng l\u00e0m cho \u0111\u00fang th\u00ec th\u00e0 kh\u00f4ng l\u00e0m c\u00f2n h\u01a1n, v\u00ec sai s\u00f3t trong vi\u1ec7c \u00e1p d\u1ee5ng CDN \u0111\u1ec3 l\u1ea1i r\u1ea5t nhi\u1ec1u h\u1eadu qu\u1ea3 tai h\u1ea1i).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"so-sanh-s\u1ef1-khac-nhau-gi\u1eefa-hosting-thong-th\u01b0\u1eddng-host-t\u1ed1t-va-host-t\u1ed1t-k\u1ebft-h\u1ee3p-cdn\"><span class=\"ez-toc-section\" id=\"8_So_sanh_su_khac_nhau_giua_hosting_thong_thuong_host_tot_va_host_tot_ket_hop_CDN\"><\/span>#8. So s\u00e1nh s\u1ef1 kh\u00e1c nhau gi\u1eefa hosting th\u00f4ng th\u01b0\u1eddng, host t\u1ed1t, v\u00e0 host t\u1ed1t k\u1ebft h\u1ee3p CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>&nbsp;<\/td><td><strong>Host th\u00f4ng th\u01b0\u1eddng<\/strong><\/td><td><strong>Host t\u1ed1t<\/strong><\/td><td><strong>Host t\u1ed1t + CDN<\/strong><\/td><\/tr><tr><td>T\u0103ng t\u1ed1c \u0111\u1ed9 website<\/td><td>Trung b\u00ecnh<\/td><td>T\u1ed1t<\/td><td>R\u1ea5t t\u1ed1t<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao<\/td><td>Trung b\u00ecnh<\/td><td>T\u1ed1t<\/td><td>R\u1ea5t t\u1ed1t<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u0103ng \u0111\u1ed9t bi\u1ebfn<\/td><td>K\u00e9m<\/td><td>Kh\u00e1<\/td><td>R\u1ea5t t\u1ed1t***<\/td><\/tr><tr><td>Chi ph\u00ed<\/td><td>Trung b\u00ecnh<\/td><td>Cao<\/td><td>Cao h\u01a1n*<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u1ecbch v\u1ee5 nhanh<\/td><td>Trung b\u00ecnh<\/td><td>Trung b\u00ecnh<\/td><td>D\u1ec5 d\u00e0ng****<\/td><\/tr><tr><td>B\u1ea3o m\u1eadt<\/td><td>Trung b\u00ecnh<\/td><td>T\u1ed1t<\/td><td>T\u1ed1t<\/td><\/tr><tr><td>Uptime<\/td><td>Trung b\u00ecnh<\/td><td>T\u1ed1t h\u01a1n<\/td><td>T\u1ed1t<\/td><\/tr><tr><td>Ch\u1ed1ng DDoS<\/td><td>H\u1ea7u nh\u01b0 kh\u00f4ng<\/td><td>Kh\u00e1<\/td><td>T\u1ed1t**<\/td><\/tr><tr><td>Y\u00eau c\u1ea7u chuy\u00ean m\u00f4n c\u1ee7a ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web<\/td><td>Trung b\u00ecnh<\/td><td>Trung b\u00ecnh<\/td><td>Kh\u00e1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110i\u1ec3m y\u1ebfu duy nh\u1ea5t c\u1ee7a vi\u1ec7c k\u1ebft h\u1ee3p host t\u1ed1t + CDN l\u00e0 n\u00f3 y\u00eau c\u1ea7u ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web c\u1ea7n ph\u1ea3i c\u00f3 n\u0103ng l\u1ef1c k\u1ef9 thu\u1eadt t\u1ed1t h\u01a1n m\u1edbi tri\u1ec3n khai d\u1ecbch v\u1ee5 ho\u00e0n ch\u1ec9nh \u0111\u01b0\u1ee3c, ho\u1eb7c b\u1ea1n s\u1ebd ph\u1ea3i \u0111i thu\u00ea b\u00ean ngo\u00e0i, nh\u01b0ng d\u00f9 v\u1eady b\u1ea1n v\u1eabn ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c c\u0103n b\u1ea3n, \u0111\u1ec3 tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o ng\u01b0\u1eddi kh\u00e1c.<\/p>\n\n\n\n<p>(*) V\u1ec1 v\u1ea5n \u0111\u1ec1 chi ph\u00ed cao h\u01a1n, trong ph\u1ea7n l\u1edbn tr\u01b0\u1eddng h\u1ee3p chi ph\u00ed c\u1ea7n ph\u1ea3i b\u1ecf ra th\u1ea5p h\u01a1n nhi\u1ec1u l\u1ee3i \u00edch c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p>(**) Tuy r\u1eb1ng CDN ch\u1ed1ng \u0111\u01b0\u1ee3c DDoS (t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5) ph\u1ea7n n\u00e0o, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn gia t\u0103ng chi ph\u00ed b\u1ea5t th\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf \u0111i\u1ec1u n\u00e0y <a href=\"https:\/\/kiencang.net\/tiet-kiem-tien-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1eb1ng m\u1ed9t s\u1ed1 gi\u1edbi h\u1ea1n \u0111\u1ec3 ch\u1eb7n ng\u01b0\u1ee1ng chi ti\u00eau qu\u00e1 m\u1ee9c, tham kh\u1ea3o trong link n\u00e0y<\/a>.<\/p>\n\n\n\n<p>(***), (****) Trong h\u1ea7u h\u1ebft c\u00e1c ti\u00eau ch\u00ed <em>host t\u1ed1t<\/em> \u0111\u1ec1u ti\u1ec7m c\u1eadn n\u0103ng l\u1ef1c c\u1ee7a s\u1ef1 k\u1ebft h\u1ee3p <em>host t\u1ed1t + CDN<\/em>; Tuy nhi\u00ean \u1edf hai ti\u00eau ch\u00ed li\u00ean quan \u0111\u1ebfn <a href=\"https:\/\/kiencang.net\/website-uptime\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng \u0111\u1ed9t bi\u1ebfn, v\u00e0 m\u1edf r\u1ed9ng d\u1ecbch v\u1ee5 nhanh ch\u00f3ng<\/a> th\u00ec ngay k\u1ec3 c\u1ea3 v\u1edbi host t\u1ed1t, trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p v\u1eabn k\u00e9m h\u01a1n s\u1ef1 k\u1ebft h\u1ee3p v\u1edbi CDN kh\u00e1 nhi\u1ec1u. \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y l\u00e0 v\u00ec \u01b0u th\u1ebf v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a t\u00ednh \u0111\u00e0n h\u1ed3i m\u00e0 d\u1ecbch v\u1ee5 CDN mang l\u1ea1i.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"m\u1ed9t-s\u1ed1-cau-h\u1ecfi\"><span class=\"ez-toc-section\" id=\"9_Mot_so_cau_hoi\"><\/span>#9. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ph\u1ea7n n\u00e0y t\u00f4i s\u1ebd tr\u1ea3 l\u1eddi m\u1ed9t s\u1ed1 th\u1eafc m\u1eafc th\u01b0\u1eddng g\u1eb7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-m\u1ed9t-vai-cong-ty-cdn-ch\u1ea5t-l\u01b0\u1ee3ng\">1. M\u1ed9t v\u00e0i c\u00f4ng ty CDN ch\u1ea5t l\u01b0\u1ee3ng?<\/h3>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng ty n\u1ed5i ti\u1ebfng v\u00e0 uy t\u00edn:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.cloudflare.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare<\/a> (c\u00f3 l\u1ef1a ch\u1ecdn mi\u1ec5n ph\u00ed)<\/li>\n\n\n\n<li><a href=\"https:\/\/bunnycdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">BunnyCDN<\/a> (gi\u00e1 r\u1ebb, xem <a href=\"https:\/\/kiencang.net\/gioi-thieu-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng BunnyCDN \u1edf \u0111\u00e2y<\/a>)<\/li>\n\n\n\n<li><a aria-label=\"undefined (opens in a new tab)\" href=\"https:\/\/cloud.google.com\/cdn\" target=\"_blank\" rel=\"noreferrer noopener\">Google CDN<\/a> (t\u1ed1c \u0111\u1ed9 cao nh\u1ea5t)<\/li>\n\n\n\n<li><a href=\"https:\/\/kiencang.net\/quic-cloud-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\">QUIC.cloud<\/a> (t\u00edch h\u1ee3p v\u1edbi <a href=\"https:\/\/kiencang.net\/litespeed-plugin-cache-tot-nhat\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin LiteSpeed Cache<\/a>)<\/li>\n\n\n\n<li><a href=\"https:\/\/www.fastly.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Fastly <\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/aws.amazon.com\/cloudfront\/\" target=\"_blank\" rel=\"noreferrer noopener\">Amazon CloudFront <\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.maxcdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">MaxCDN (Stackpath <\/a>&#8211; gi\u00e1 r\u1ebb<a href=\"http:\/\/www.maxcdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">)<\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.akamai.com\/html\/solutions\/media-delivery.html\" target=\"_blank\" rel=\"noreferrer noopener\">Akamai <\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.cachefly.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cachefly <\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.keycdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">KeyCDN<\/a> (d\u1ec5 d\u00f9ng)<\/li>\n\n\n\n<li><a href=\"https:\/\/cdnsun.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDNSun<\/a> (c\u00f3 PoP \u1edf Vi\u1ec7t Nam)<\/li>\n<\/ul>\n\n\n\n<p>Xem th\u00eam <a href=\"https:\/\/kiencang.net\/cdn-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c d\u1ecbch v\u1ee5 CDN ch\u1ea5t l\u01b0\u1ee3ng d\u00e0nh cho WordPress<\/a> n\u00f3i ri\u00eang v\u00e0 website n\u00f3i chung.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-s\u1ef1-khac-bi\u1ec7t-c\u01a1-b\u1ea3n-gi\u1eefa-cac-d\u1ecbch-v\u1ee5-cdn-la-gi\">2. S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c d\u1ecbch v\u1ee5 CDN l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p>C\u00e1c c\u00f4ng ty CDN v\u1ec1 c\u01a1 b\u1ea3n kh\u00e1 gi\u1ed1ng nhau, tuy nhi\u00ean v\u1eabn c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t th\u1ec3 hi\u1ec7n \u1edf m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 nh\u01b0:<\/p>\n\n\n\n<ul>\n<li><strong>D\u1ecbch v\u1ee5 tr\u1ecdng t\u00e2m<\/strong>: \u0111a ph\u1ea7n nh\u00e0 cung c\u1ea5p CDN thu\u1ed9c nh\u00f3m CDN truy\u1ec1n th\u1ed1ng, ngh\u0129a l\u00e0 h\u1ecd t\u1eadp trung v\u00e0o ph\u00e2n t\u00e1n n\u1ed9i dung t\u0129nh, t\u1ed1i \u01b0u h\u00f3a s\u1ed1 l\u01b0\u1ee3ng PoP, v\u1ecb tr\u00ed v\u00e0 hi\u1ec7u n\u0103ng. M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p kh\u00e1c m\u1edf r\u1ed9ng h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-web-cua-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare t\u1eadp trung v\u00e0o t\u00ednh ti\u1ec7n l\u1ee3i khi tri\u1ec3n khai CDN + b\u1ea3o m\u1eadt<\/a>. M\u1ed9t s\u1ed1 n\u1eefa th\u00ec \u0111i theo h\u01b0\u1edbng t\u1eadp trung v\u00e0o h\u00ecnh \u1ea3nh, v\u00ec b\u0103ng th\u00f4ng n\u1ed9i dung t\u0129nh ch\u1ee7 y\u1ebfu t\u1eeb c\u00e1i n\u00e0y m\u00e0 ra, trong \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai <a href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u1ecbnh d\u1ea1ng \u1ea3nh ti\u1ebft ki\u1ec7m dung l\u01b0\u1ee3ng WebP<\/a>, t\u1ed1i \u01b0u h\u00f3a k\u00edch c\u1ee1 \u1ea3nh tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb, <a href=\"https:\/\/kiencang.net\/category\/lazy-load\/\">lazy load<\/a>, v\u00ed d\u1ee5 c\u00e1c c\u00f4ng ty \u0111i theo h\u01b0\u1edbng n\u00e0y l\u00e0 <a href=\"https:\/\/imagekit.io\/\" target=\"_blank\" rel=\"noreferrer noopener\">imagekit.io<\/a>, <a href=\"https:\/\/cloudinary.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">cloudinary<\/a>, <a aria-label=\"undefined (opens in a new tab)\" href=\"https:\/\/www.imgix.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">imgix<\/a> v\u00e0 <a href=\"https:\/\/optimole.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">optimole.com<\/a>. Cu\u1ed1i 2019, LiteSpeed \u0111\u01b0a ra d\u1ecbch v\u1ee5 CDN QUIC.cloud c\u00f3 kh\u1ea3 n\u0103ng cache trang HTML \u1edf m\u00e1y ch\u1ee7 bi\u00ean c\u1ee7a h\u1ecd, \u0111\u00e2y l\u00e0 \u0111i\u1ec1u r\u1ea5t \u00edt d\u1ecbch v\u1ee5 l\u00e0m \u0111\u01b0\u1ee3c v\u00e0 gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 trang \u0111\u00e1ng k\u1ec3.<\/li>\n\n\n\n<li><strong>D\u1ecbch v\u1ee5 b\u1ed5 sung<\/strong>: nhi\u1ec1u <a href=\"https:\/\/kiencang.net\/cdn-toi-uu-anh\/\" target=\"_blank\" rel=\"noreferrer noopener\">d\u1ecbch v\u1ee5 CDN<\/a> k\u00e8m th\u00eam c\u00e1c t\u00ednh n\u0103ng \u0111\u00e1ng gi\u00e1 cho \u1ea3nh nh\u01b0 thay \u0111\u1ed5i \u0111\u1ecbnh d\u1ea1ng, k\u00edch c\u1ee1, c\u00e1c hi\u1ec7u \u1ee9ng nh\u01b0 bo tr\u00f2n, l\u00e0m m\u1edd, v\u00e2n v\u00e2n.<\/li>\n\n\n\n<li><strong>Gi\u00e1 c\u1ea3<\/strong>: c\u00f3 th\u1ec3 ch\u00eanh nhau \u0111\u1ebfn v\u00e0i l\u1ea7n t\u00ednh theo 1GB d\u1eef li\u1ec7u, n\u1ebfu l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n l\u1edbn, b\u1ea1n n\u00ean t\u00ecm c\u00e1c d\u1ecbch v\u1ee5 CDN c\u00f3 gi\u00e1 d\u1ec5 ch\u1ecbu h\u01a1n. Hi\u1ec7n t\u1ea1i <a href=\"https:\/\/bunnycdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">BunnyCDN<\/a> v\u00e0 <a href=\"https:\/\/www.stackpath.com\/products\/cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">StackPath<\/a> \u0111ang c\u00f3 gi\u00e1 th\u00e0nh r\u1ea5t t\u1ed1t so v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kh\u00e1c.<\/li>\n\n\n\n<li><strong>Ki\u1ec3u thanh to\u00e1n<\/strong>: nhi\u1ec1u d\u1ecbch v\u1ee5 CDN y\u00eau c\u1ea7u tr\u1ea3 tr\u01b0\u1edbc v\u1edbi l\u01b0\u1ee3ng ti\u1ec1n t\u1ed1i thi\u1ec3u n\u00e0o \u0111\u00f3, d\u00f9 r\u1eb1ng h\u1ecd kh\u00f4ng quy \u0111\u1ecbnh b\u1ea1n ph\u1ea3i ti\u00eau t\u1ed1i thi\u1ec3u bao nhi\u00eau ti\u1ec1n m\u1ed9t th\u00e1ng, ngh\u0129a l\u00e0 b\u1ea1n ti\u00eau h\u1ebft s\u1ed1 ti\u1ec1n n\u1ea1p v\u00e0o th\u00ec m\u1edbi th\u00f4i (gi\u1ed1ng ki\u1ec3u th\u1ebb c\u00e0o \u0111i\u1ec7n tho\u1ea1i). M\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 kh\u00e1c \u0111i theo h\u01b0\u1edbng thanh to\u00e1n c\u1ed1 \u0111\u1ecbnh theo th\u00e1ng v\u00e0 th\u01b0\u1eddng \u0111i k\u00e8m l\u01b0u l\u01b0\u1ee3ng t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ph\u00e9p d\u00f9ng.<\/li>\n\n\n\n<li><strong>M\u1ee9c \u0111\u1ed9 d\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t<\/strong>: n\u00f3i chung CDN s\u1ebd l\u00e0m b\u1ea1n t\u1ed1n th\u1eddi gian h\u1ecdc h\u1ecfi, nh\u01b0ng ngay c\u1ea3 th\u1ebf th\u00ec c\u00e1c d\u1ecbch v\u1ee5 CDN c\u0169ng kh\u00e1c nhau v\u1ec1 m\u1ee9c \u0111\u1ed9 thi\u1ebft l\u1eadp, c\u00f3 d\u1ecbch v\u1ee5 r\u1ea5t d\u1ec5, c\u00f3 c\u00e1i th\u00ec kh\u00f3 h\u01a1n kh\u00e1 nhi\u1ec1u.<\/li>\n\n\n\n<li><strong>S\u1ed1 l\u01b0\u1ee3ng PoP v\u00e0 v\u1ecb tr\u00ed c\u1ee7a n\u00f3<\/strong>: c\u00e1c d\u1ecbch v\u1ee5 CDN qu\u1ed1c t\u1ebf hi\u1ec7n nay c\u00f3 \u0111\u1ed9 ph\u1ee7 r\u1ea5t t\u1ed1t, v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c PoP, c\u00e1c v\u1ecb tr\u00ed g\u1ea7n Vi\u1ec7t Nam c\u0169ng nhi\u1ec1u (Sing, HongKong, Nh\u1eadt, \u0110\u00e0i Loan), tuy nhi\u00ean PoP \u1edf ngay t\u1ea1i Vi\u1ec7t Nam th\u00ec kh\u00f4ng c\u00f3 nhi\u1ec1u d\u1ecbch v\u1ee5 c\u00f3 (tr\u1eeb d\u1ecbch v\u1ee5 trong n\u01b0\u1edbc).<\/li>\n<\/ul>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-co-d\u1ecbch-v\u1ee5-cdn-mi\u1ec5n-phi-nao-khong\">3. C\u00f3 d\u1ecbch v\u1ee5 CDN mi\u1ec5n ph\u00ed n\u00e0o kh\u00f4ng?<\/h3>\n\n\n\n<p>Ng\u00e0y x\u01b0a t\u00f4i th\u1ea5y ch\u1ec9 c\u00f3 <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare<\/a> v\u00e0 <a href=\"https:\/\/kiencang.net\/tang-toc-do-website-jetpack\/\" target=\"_blank\" rel=\"noreferrer noopener\">Jetpack c\u1ee7a WordPress<\/a> l\u00e0 c\u00f3 d\u1ecbch v\u1ee5 CDN mi\u1ec5n ph\u00ed. Hi\u1ec7n t\u1ea1i th\u00ec s\u1ed1 l\u01b0\u1ee3ng \u0111\u00e3 t\u0103ng ti\u1ebfn l\u00ean kh\u00e1 nhi\u1ec1u, ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/imagekit.io\/plans\" target=\"_blank\" rel=\"noreferrer noopener\">Imagekit.io<\/a> hay m\u1ed9t v\u00e0i d\u1ecbch v\u1ee5 m\u1edbi kh\u00e1c (h\u1ecd mi\u1ec5n ph\u00ed g\u00f3i nh\u1ecf \u0111\u1ec3 t\u1ea1o \u0111\u00e0 v\u1ec1 m\u1eb7t s\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u0111\u1ed9 n\u1ed5i ti\u1ebfng).<\/p>\n\n\n\n<p>T\u1ea5t c\u1ea3 c\u00e1c s\u1ea3n ph\u1ea9m tr\u00ean \u0111\u1ec1u kh\u00f4ng ph\u1ea3i l\u00e0 d\u1ecbch v\u1ee5 mi\u1ec5n ph\u00ed ho\u00e0n to\u00e0n (freemium), n\u00f3 \u0111\u1ec1u hy v\u1ecdng m\u1ed9t ng\u00e0y n\u00e0o \u0111\u00f3 b\u1ea1n c\u1eadp nh\u1eadt l\u00ean phi\u00ean b\u1ea3n c\u00f3 ph\u00ed. Hay n\u00f3i c\u00e1ch kh\u00e1c, n\u1ebfu b\u1ea1n t\u1eadp t\u00e0nh ho\u1eb7c website kh\u00f4ng quan tr\u1ecdng th\u00ec c\u00f3 th\u1ec3 d\u00f9ng CDN mi\u1ec5n ph\u00ed, c\u00f2n n\u1ebfu nghi\u00eam t\u00fac n\u00ean d\u00f9ng CDN c\u00f3 ph\u00ed, trong ph\u1ea7n l\u1edbn tr\u01b0\u1eddng h\u1ee3p n\u00f3 ch\u1ec9 l\u00e0m b\u1ea1n t\u1ed1n t\u1eeb 2 &#8211; 10 \u0111\u00f4 \/ th\u00e1ng (website c\u00f3 t\u1eeb 20 ng\u00e0n \u0111\u1ebfn 100 ng\u00e0n view m\u1ed9t th\u00e1ng).<\/p>\n\n\n\n<p>Bonus: n\u1ebfu b\u1ea1n ch\u1ec9 c\u1ea7n CDN mi\u1ec5n ph\u00ed cho \u1ea3nh, v\u00e0 \u0111ang d\u00f9ng WordPress, hi\u1ec7n c\u00f3 plugin r\u1ea5t t\u1ed1t c\u00f3 t\u00ean <a href=\"https:\/\/kiencang.net\/plugin-flying-images\/\" target=\"_blank\" rel=\"noreferrer noopener\">Flying Images<\/a>. Kh\u00f4ng ch\u1ec9 CDN, plugin n\u00e0y c\u00f2n gi\u00fap b\u1ea1n n\u00e9n \u1ea3nh mi\u1ec5n ph\u00ed v\u00e0 <a href=\"https:\/\/kiencang.net\/khong-nen-su-dung-lazy-load-anh-tren-thiet-bi-di-dong\/\" target=\"_blank\" rel=\"noreferrer noopener\">lazy load \u1ea3nh<\/a> theo c\u00e1ch m\u1edbi \u0111\u1ec3 h\u1ea1n ch\u1ebf \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-cdn-gia-r\u1ebb\">4. CDN gi\u00e1 r\u1ebb?<\/h3>\n\n\n\n<p>\u1ede th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i (2019) t\u00f4i th\u1ea5y c\u00f3 d\u1ecbch v\u1ee5 CDN gi\u00e1 r\u1ebb kh\u00e1 \u1ea5n t\u01b0\u1ee3ng l\u00e0 <a href=\"https:\/\/bunnycdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">BunnyCDN<\/a>, kh\u00f4ng r\u00f5 h\u1ecd c\u00f3 duy tr\u00ec \u0111\u01b0\u1ee3c l\u00e2u d\u00e0i ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 t\u01b0\u01a1ng \u0111\u1ed1i t\u1ed1t k\u00e8m v\u1edbi gi\u00e1 kh\u00e1 m\u1ec1m \u0111\u00f3 kh\u00f4ng.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-toi-co-c\u1ea7n-cdn-khong-n\u1ebfu-khach-hang-c\u1ee7a-toi-ch\u1ec9-thu\u1ed9c-m\u1ed9t-qu\u1ed1c-gia-c\u1ee5-th\u1ec3\">5. T\u00f4i c\u00f3 c\u1ea7n CDN kh\u00f4ng n\u1ebfu kh\u00e1ch h\u00e0ng c\u1ee7a t\u00f4i ch\u1ec9 thu\u1ed9c m\u1ed9t qu\u1ed1c gia c\u1ee5 th\u1ec3?<\/h3>\n\n\n\n<p>C\u00e2u tr\u1ea3 l\u1eddi nhanh l\u00e0 c\u00f3, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c qu\u1ed1c gia r\u1ed9ng l\u1edbn nh\u01b0 Hoa K\u1ef3, Trung Qu\u1ed1c, hay Nga.<\/p>\n\n\n\n<p>Nh\u01b0ng v\u1edbi \u0111\u1ea5t n\u01b0\u1edbc c\u00f3 di\u1ec7n t\u00edch nh\u1ecf h\u01a1n nhi\u1ec1u nh\u01b0 Vi\u1ec7t Nam th\u00ec c\u00f3 c\u1ea7n d\u1ecbch v\u1ee5 CDN kh\u00f4ng?<\/p>\n\n\n\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 c\u00f2n t\u00f9y, nh\u01b0ng n\u1ebfu b\u1ea1n mu\u1ed1n n\u00e2ng t\u1ea7m ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 l\u00ean cao, th\u00ec c\u00e2u tr\u1ea3 l\u1eddi ch\u1eafc ch\u1eafn v\u1eabn l\u00e0 c\u00f3. Nhi\u1ec1u trang tin l\u1edbn trong n\u01b0\u1edbc v\u1eabn s\u1eed d\u1ee5ng CDN \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 truy c\u1eadp \u1edf c\u1ea3 ba mi\u1ec1n \u0111\u1ea5t n\u01b0\u1edbc l\u00e0 cao nh\u1ea5t c\u00f3 th\u1ec3. V\u00ed d\u1ee5 vnexpress.net, b\u00e1o \u0111i\u1ec7n t\u1eed 24h,&#8230;\u0111\u1ec1u d\u00f9ng CDN. C\u00e1c d\u1ecbch v\u1ee5 th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n l\u1edbn nh\u01b0 tiki hay shopee c\u0169ng v\u1eady.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1175\" height=\"649\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/01\/tiki-cdn.png\" alt=\"Tiki s\u1eed d\u1ee5ng CDN\" class=\"wp-image-13570\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2020\/01\/tiki-cdn.png 1175w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/01\/tiki-cdn-300x166.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/01\/tiki-cdn-1024x566.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2020\/01\/tiki-cdn-768x424.png 768w\" sizes=\"(max-width: 1175px) 100vw, 1175px\" \/><\/figure><\/div>\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-vi\u1ec7c-thi\u1ebft-l\u1eadp-cdn-lam-toi-r\u1ed1i-tung-h\u1ecfa-mu-b\u1ea1n-co-thong-tin-nao-h\u1ed7-tr\u1ee3-khong\">6. Vi\u1ec7c thi\u1ebft l\u1eadp CDN l\u00e0m t\u00f4i r\u1ed1i tung h\u1ecfa m\u00f9, b\u1ea1n c\u00f3 th\u00f4ng tin n\u00e0o h\u1ed7 tr\u1ee3 kh\u00f4ng?<\/h3>\n\n\n\n<p>\u0110\u00fang l\u00e0 vi\u1ec7c thi\u1ebft l\u1eadp CDN chu\u1ea9n \u0111\u00f2i h\u1ecfi th\u1eddi gian t\u00ecm hi\u1ec3u v\u00e0 s\u1ebd phi\u1ec1n to\u00e1i n\u1ebfu b\u1ea1n kh\u00f4ng nhanh ch\u00f3ng h\u1ecdc \u0111\u01b0\u1ee3c n\u00f3 (b\u1ea1n kh\u00f4ng mu\u1ed1n website b\u1ecb gi\u00e1n \u0111o\u1ea1n).<\/p>\n\n\n\n<p>T\u00f4i c\u00f3 vi\u1ebft ri\u00eang m\u1ed9t b\u00e0i v\u1ec1 <a href=\"https:\/\/kiencang.net\/rac-roi-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i khi l\u1ea7n \u0111\u1ea7u s\u1eed d\u1ee5ng CDN \u0111\u1ec3 c\u00e1c b\u1ea1n tham kh\u1ea3o<\/a>.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-d\u1ecbch-v\u1ee5-cdn-\u1edf-vi\u1ec7t-nam-thi-sao\">7. D\u1ecbch v\u1ee5 CDN \u1edf Vi\u1ec7t Nam th\u00ec sao?<\/h3>\n\n\n\n<p>T\u00f4i ch\u01b0a d\u00f9ng bao gi\u1edd, nh\u01b0ng \u1edf Vi\u1ec7t Nam d\u1ea1o g\u1ea7n \u0111\u00e2y c\u00f3 r\u1ea5t nhi\u1ec1u c\u00f4ng ty tri\u1ec3n khai d\u1ecbch v\u1ee5 CDN v\u1edbi gi\u00e1 ng\u00e0y c\u00e0ng th\u00e2n thi\u1ec7n v\u1edbi c\u00e1c trang web trung b\u00ecnh h\u01a1n, h\u1ee9a h\u1eb9n th\u1ecb tr\u01b0\u1eddng s\u1ebd s\u00f4i \u0111\u1ed9ng h\u01a1n nhi\u1ec1u trong th\u1eddi gian s\u1eafp t\u1edbi.<\/p>\n\n\n\n<p>Nhi\u1ec1u \u0111\u01a1n v\u1ecb l\u1edbn \u0111\u00e3 tham gia m\u1ea3ng CDN nh\u01b0 VCCorp (v\u1edbi <a href=\"https:\/\/bizflycloud.vn\/\" target=\"_blank\" rel=\"noreferrer noopener\">BizFly Cloud<\/a>) hay <a href=\"https:\/\/viettelidc.com.vn\/mang-phan-phoi-noi-dung-cdn\" target=\"_blank\" rel=\"noreferrer noopener\">Viettel IDC<\/a>.<\/p>\n\n\n\n<p>[C\u1eadp nh\u1eadt]: T\u00f4i \u0111\u00e3 d\u00f9ng th\u1eed CDN c\u1ee7a BizFly v\u00e0 th\u1ea5y h\u1ecd c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t. Anh ch\u1ecb em n\u1ebfu c\u1ea7n c\u00f3 th\u1ec3 tr\u1ea3i nghi\u1ec7m.<\/p>\n\n\n\n<p>&#8212;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-tr\u01b0\u1eddng-h\u1ee3p-nao-b\u1ea1n-khong-nen-dung-cdn\">8. Tr\u01b0\u1eddng h\u1ee3p n\u00e0o b\u1ea1n kh\u00f4ng n\u00ean d\u00f9ng CDN?<\/h3>\n\n\n\n<p>D\u00f9ng CDN l\u00fac n\u00e0o c\u0169ng cho t\u1ed1c \u0111\u1ed9 t\u1ed1t h\u01a1n, nh\u01b0ng n\u1ebfu b\u1ea1n r\u01a1i v\u00e0o c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau th\u00ec c\u00f3 th\u1ec3 kh\u00f4ng c\u1ea7n CDN:<\/p>\n\n\n\n<ul>\n<li>B\u1ea1n c\u00f3 m\u00e1y ch\u1ee7 \u0111\u1ee7 m\u1ea1nh trong n\u01b0\u1edbc: khi b\u1ea1n c\u00f3 m\u00e1y ch\u1ee7 m\u1ea1nh \u1edf c\u00e1c trung t\u00e2m l\u1edbn nh\u01b0 H\u00e0 N\u1ed9i ho\u1eb7c S\u00e0i G\u00f2n, t\u1ed1c \u0111\u1ed9 website truy c\u1eadp trong n\u01b0\u1edbc \u0111\u00e3 \u0111\u1ee7 t\u1ed1t r\u1ed3i.<\/li>\n\n\n\n<li>B\u1ea1n c\u00f3 m\u00e1y ch\u1ee7 m\u1ea1nh g\u1ea7n Vi\u1ec7t Nam v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp web cao: n\u1ebfu d\u00f9ng CDN trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y b\u1ea1n s\u1ebd t\u1ed1n chi ph\u00ed kh\u00e1 l\u1edbn, t\u1ea5t nhi\u00ean khi d\u00f9ng CDN t\u1ed1c \u0111\u1ed9 s\u1ebd t\u0103ng nh\u01b0ng c\u00f3 th\u1ec3 vi\u1ec7c t\u0103ng t\u1ed1c n\u00e0y kh\u00f4ng \u0111\u00e1ng v\u1edbi chi ph\u00ed b\u1ecf ra (m\u1ed9t trang tin 300 ng\u00e0n view\/th\u00e1ng c\u00f3 th\u1ec3 t\u1ed1n \u0111\u1ebfn 20$ \/ th\u00e1ng).<\/li>\n<\/ul>\n\n\n\n<p>Suy cho c\u00f9ng v\u1ea5n \u0111\u1ec1 \u1edf \u0111\u00e2y l\u00e0 chi ph\u00ed b\u1ea1n b\u1ecf ra c\u00f3 \u0111\u00e1ng v\u1edbi l\u1ee3i \u00edch \u0111em l\u1ea1i hay kh\u00f4ng. M\u1ed9t trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed c\u00f3 m\u00e1y ch\u1ee7 m\u1ea1nh trong n\u01b0\u1edbc c\u00f3 th\u1ec3 v\u1eabn n\u00ean d\u00f9ng CDN, trong khi m\u1ed9t trang blog th\u00f4ng th\u01b0\u1eddng c\u00f3 l\u1ebd kh\u00f4ng c\u1ea7n thi\u1ebft cho l\u1eafm.<\/p>\n\n\n\n<p>&#8211; &#8211; &#8211;<\/p>\n\n\n\n<p>Tham kh\u1ea3o:<\/p>\n\n\n\n<ol>\n<li><em><a href=\"https:\/\/www.keycdn.com\/what-is-a-cdn\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">What is a CDN, c\u1ee7a KeyCDN<\/a> &#8211; c\u00f4ng ty chuy\u00ean v\u1ec1 d\u1ecbch v\u1ee5 CDN<\/em><\/li>\n\n\n\n<li><em>Content delivery networks, trang Varvy, t\u00e1c gi\u1ea3: Patric Sexton<\/em><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Khi t\u01b0 v\u1ea5n t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 website, kh\u1ea3 n\u0103ng cao b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ec1 ngh\u1ecb s\u1eed d\u1ee5ng CDN, v\u00ec n\u00f3 th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 trang t\u1ed1t nh\u1ea5t. Khi \u1ea5y ch\u1eafc ch\u1eafn b\u1ea1n s\u1ebd t\u1ef1 h\u1ecfi CDN l\u00e0 g\u00ec v\u1eady? Content Delivery Network (M\u1ea1ng ph\u00e2n ph\u1ed1i &hellip;<\/p>\n","protected":false},"author":1,"featured_media":20440,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CDN l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n n\u00ean s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 t\u0103ng t\u1ed1c website c\u0169ng nh\u01b0 \u0111\u1ea3m b\u1ea3o uptime cao nh\u1ea5t c\u00f3 th\u1ec3 &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"description\" content=\"CDN l\u00e0 d\u1ecbch v\u1ee5 gi\u00fap t\u0103ng t\u1ed1c website hi\u1ec7u qu\u1ea3, qua vi\u1ec7c g\u1eedi n\u1ed9i dung t\u1eeb v\u1ecb tr\u00ed g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n. 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