{"id":11308,"date":"2021-01-17T04:43:00","date_gmt":"2021-01-16T21:43:00","guid":{"rendered":"http:\/\/www.ducanhplus.com\/?p=11308"},"modified":"2021-01-17T04:43:00","modified_gmt":"2021-01-16T21:43:00","slug":"tinh-nang-cdn-cua-cloudflare","status":"publish","type":"post","link":"https:\/\/kiencang.net\/tinh-nang-cdn-cua-cloudflare\/","title":{"rendered":"T\u00ednh n\u0103ng CDN c\u1ee7a Cloudflare"},"content":{"rendered":"\n<p>H\u00f4m n\u1ecd t\u00f4i c\u00f3 <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch s\u1eed d\u1ee5ng Cloudflare<\/a>, \u1edf b\u00e0i \u0111\u00f3 t\u00f4i ch\u1ee7 y\u1ebfu chia s\u1ebb nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0o n\u00ean d\u00f9ng, v\u00e0 c\u00e1c b\u01b0\u1edbc c\u00e0i \u0111\u1eb7t c\u01a1 b\u1ea3n \u0111\u1ec3 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 c\u1ee7a website<\/a>. Trong b\u00e0i n\u00e0y t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o t\u1eebng t\u00ednh n\u0103ng c\u1ee7a Cloudflare, \u0111i\u1ec3m n\u1ed5i tr\u1ed9i c\u1ee7a n\u00f3 l\u00e0 Cloudflare t\u00edch h\u1ee3p nhi\u1ec1u t\u00ednh n\u0103ng quan tr\u1ecdng v\u00e0o trong m\u1ed9t g\u00f3i d\u1ecbch v\u1ee5, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 t\u00f9y \u00fd b\u1eadt t\u1eaft d\u1ec5 d\u00e0ng. \u0110i\u1ec1u \u0111\u1ea7u ti\u00ean ph\u1ea3i n\u00f3i \u0111\u1ebfn l\u00e0 t\u00ednh n\u0103ng CDN.<\/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-6577d6e07e512\" ><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-6577d6e07e512\"  type=\"checkbox\" id=\"item-6577d6e07e512\"><\/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\/tinh-nang-cdn-cua-cloudflare\/#CDN\" title=\"CDN\">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\/tinh-nang-cdn-cua-cloudflare\/#Den_duoc_voi_cac_khach_hang_toan_cau_co_nhung_thach_thuc_cua_no\" title=\"\u0110\u1ebfn \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c c\u1ee7a n\u00f3\">\u0110\u1ebfn \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c c\u1ee7a n\u00f3<\/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\/tinh-nang-cdn-cua-cloudflare\/#Mang_luoi_cloud_toan_cau_va_dap_ung_cao\" title=\"M\u1ea1ng l\u01b0\u1edbi cloud to\u00e0n c\u1ea7u v\u00e0 \u0111\u00e1p \u1ee9ng cao\">M\u1ea1ng l\u01b0\u1edbi cloud to\u00e0n c\u1ea7u v\u00e0 \u0111\u00e1p \u1ee9ng cao<\/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\/tinh-nang-cdn-cua-cloudflare\/#Co_nhieu_khach_hang_toan_cau_hon\" title=\"C\u00f3 nhi\u1ec1u kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u h\u01a1n\">C\u00f3 nhi\u1ec1u kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u h\u01a1n<\/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\/tinh-nang-cdn-cua-cloudflare\/#Tranh_tinh_trang_nghen_internet_va_mat_dien\" title=\"Tr\u00e1nh t\u00ecnh tr\u1ea1ng ngh\u1ebdn internet v\u00e0 m\u1ea5t \u0111i\u1ec7n\">Tr\u00e1nh t\u00ecnh tr\u1ea1ng ngh\u1ebdn internet v\u00e0 m\u1ea5t \u0111i\u1ec7n<\/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\/tinh-nang-cdn-cua-cloudflare\/#Gia_tang_kha_nang_tiet_kiem_bang_thong\" title=\"Gia t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng\">Gia t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng<\/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\/tinh-nang-cdn-cua-cloudflare\/#Kiem_soat_nhieu_hon_voi_luu_tru\" title=\"Ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n v\u1edbi l\u01b0u tr\u1eef\">Ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n v\u1edbi l\u01b0u tr\u1eef<\/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\/tinh-nang-cdn-cua-cloudflare\/#Cai_thien_trai_nghiem_mang_di_dong\" title=\"C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m m\u1ea1ng di \u0111\u1ed9ng\">C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m m\u1ea1ng di \u0111\u1ed9ng<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"cdn\"><span class=\"ez-toc-section\" id=\"CDN\"><\/span>CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb <em>Content Delivery Network<\/em> (m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung to\u00e0n c\u1ea7u). <a href=\"https:\/\/kiencang.net\/cdn-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN gi\u00fap trang web c\u1ee7a b\u1ea1n t\u1ea3i nhanh h\u01a1n<\/a> b\u1eb1ng c\u00e1ch l\u1ea5y n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 g\u1ea7n ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t. N\u00f3 c\u0169ng gi\u00fap gi\u1ea3m b\u0103ng th\u00f4ng (bandwidth) v\u00e0 chi ph\u00ed h\u1ea1 t\u1ea7ng v\u00ec l\u00fac n\u00e0y s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c (origin server) c\u0169ng gi\u1ea3m \u0111i nhi\u1ec1u so v\u1edbi tr\u01b0\u1edbc khi d\u00f9ng CDN.<\/p>\n\n\n<p>David O&#8217;Brien c\u1ee7a c\u00f4ng ty YPO chia s\u1ebb:<\/p>\n\n\n<blockquote class=\"wp-block-quote\"><p>80% l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c caching(*) tr\u00ean Cloudflare, v\u00e0 ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y th\u1eddi gian t\u1ea3i trang tr\u00ean c\u1ea3 m\u00e1y b\u00e0n l\u1eabn di \u0111\u1ed9ng \u0111\u1ec1u gi\u1ea3m trung b\u00ecnh 50% &#8211; \u0111i\u1ec1u n\u00e0y th\u1eadt tuy\u1ec7t v\u1eddi!<\/p><\/blockquote>\n\n\n<p>*caching, cache: l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt l\u01b0u tr\u1eef d\u1eef li\u1ec7u c\u1ee7a CDN, n\u00f3 t\u1ea1o m\u1ed9t b\u1ea3n sao gi\u1ed1ng y nh\u01b0ng l\u1ea1i c\u1ea7n \u00edt t\u00e0i nguy\u00ean h\u01a1n so v\u1edbi trang web g\u1ed1c, do \u0111\u00f3 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang.<\/p>\n\n\n<p><strong>Ch\u00fa th\u00edch t\u1eeb ng\u01b0\u1eddi d\u1ecbch<\/strong>: \u1edf Vi\u1ec7t Nam nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng d\u1ecbch v\u1ee5 CDN c\u1ee7a Cloudflare kh\u00f4ng ph\u1ea3i v\u00ec l\u00fd do h\u1ecd c\u00f3 kh\u00e1ch h\u00e0ng qu\u1ed1c t\u1ebf. L\u00fd do ph\u1ed5 bi\u1ebfn h\u01a1n bao g\u1ed3m (1): <a href=\"https:\/\/kiencang.net\/giam-tai-cho-host-yeu\/\" target=\"_blank\" rel=\"noreferrer noopener\">gi\u1ea3m t\u1ea3i cho hosting g\u1ed1c<\/a>; (2) hosting g\u1ed1c \u1edf xa ng\u01b0\u1eddi d\u00f9ng Vi\u1ec7t Nam; (3) h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c ph\u1ea7n n\u00e0o c\u00e1c v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"d\u1ebfn-d\u01b0\u1ee3c-v\u1edbi-cac-khach-hang-toan-c\u1ea7u-co-nh\u1eefng-thach-th\u1ee9c-c\u1ee7a-no\"><span class=\"ez-toc-section\" id=\"Den_duoc_voi_cac_khach_hang_toan_cau_co_nhung_thach_thuc_cua_no\"><\/span>\u0110\u1ebfn \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c c\u1ee7a n\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>C\u00e1c doanh nghi\u1ec7p ng\u00e0y c\u00e0ng v\u01b0\u01a1n ra to\u00e0n c\u1ea7u v\u00e0 c\u1ea7n c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng c\u1ee7a h\u1ecd trong nh\u1eefng th\u1ecb tr\u01b0\u1eddng m\u1edbi. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 tr\u1ec5 m\u1ea1ng (network latency), h\u1ecd c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn n\u1ed9i dung c\u1ee7a m\u00ecnh l\u01b0u tr\u1eef trong trung t\u00e2m d\u1eef li\u1ec7u \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi nh\u00e0 cung c\u1ea5p hosting c\u1ee7a h\u1ecd.<\/p>\n\n\n<p>Khi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng l\u00ean, chi ph\u00ed h\u1ed7 tr\u1ee3 cho c\u00e1c th\u1ecb tr\u01b0\u1eddng m\u1edbi t\u0103ng theo do b\u0103ng th\u00f4ng v\u00e0 d\u1eef li\u1ec7u t\u0103ng cao t\u1eeb c\u00e1c trang web. Khi \u0111\u00f3 c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 CDN s\u1ebd gi\u00fap doanh nghi\u1ec7p t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn to\u00e0n c\u1ea7u v\u1edbi chi ph\u00ed hi\u1ec7u qu\u1ea3 h\u01a1n (cost-effectively), nhi\u1ec1u nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 x\u00e2y d\u1ef1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ed1 \u0111\u1ecbnh khi\u1ebfn cho h\u1ecd kh\u00f3 c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd v\u00e0 kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a quy tr\u00ecnh c\u00f4ng vi\u1ec7c g\u1ecdn nh\u1eb9.<\/p>\n\n\n<p>Austin Davies t\u1eeb trang AO.com chia s\u1ebb:<\/p>\n\n\n<blockquote class=\"wp-block-quote\"><p>Nh\u00e0 cung c\u1ea5p tr\u01b0\u1edbc \u0111\u00e2y c\u1ee7a ch\u00fang t\u00f4i c\u00f3 v\u1ebb l\u1ed7i th\u1eddi khi so s\u00e1nh v\u1edbi Cloudflare. Vi\u1ec7c tri\u1ec3n khai c\u00e1c t\u00ednh n\u0103ng nh\u01b0 <a href=\"https:\/\/kiencang.net\/dinh-tuyen-argo-cua-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">Argo Smart Routing<\/a> v\u00e0 caching theo t\u1ea7ng r\u1ea5t d\u1ec5 thao t\u00e1c, kh\u00f4ng y\u00eau c\u1ea7u b\u1ea5t c\u1ee9 thay \u0111\u1ed5i n\u00e0o v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a ch\u00fang t\u00f4i.<\/p><\/blockquote>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"m\u1ea1ng-l\u01b0\u1edbi-cloud-toan-c\u1ea7u-va-dap-\u1ee9ng-cao\"><span class=\"ez-toc-section\" id=\"Mang_luoi_cloud_toan_cau_va_dap_ung_cao\"><\/span>M\u1ea1ng l\u01b0\u1edbi cloud to\u00e0n c\u1ea7u v\u00e0 \u0111\u00e1p \u1ee9ng cao<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare \u0111\u00e3 x\u00e2y d\u1ef1ng vs m\u1edf r\u1ed9ng <a href=\"https:\/\/www.cloudflare.com\/network\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u1ea1ng l\u01b0\u1edbi trung t\u00e2m d\u1eef li\u1ec7u to\u00e0n c\u1ea7u<\/a> \u0111\u1ec3 cache c\u00e1c n\u1ed9i dung t\u0129nh (static content) g\u1ea7n h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng. L\u01b0u tr\u1eef c\u00e1c file th\u01b0\u1eddng xuy\u00ean truy c\u1eadp tr\u00ean m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Cloudflare gi\u00fap gi\u1ea3m kho\u1ea3ng c\u00e1ch m\u00e0 n\u1ed9i dung c\u1ea7n ph\u1ea3i \u0111i qua \u0111\u1ec3 \u0111\u1ebfn \u0111\u01b0\u1ee3c v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u0169ng gi\u1ea3m thi\u1ec3u \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 tr\u1ec5 cao v\u1ec1 th\u1eddi gian t\u1ea3i trang (web page load times). <\/p>\n\n\n<p>M\u1ea1ng l\u01b0\u1edbi c\u1ee7a Cloudflare l\u00e0 API \u0111\u1ea7u ti\u00ean, cho ph\u00e9p kh\u00e1ch h\u00e0ng d\u1ec5 d\u00e0ng t\u1ef1 \u0111\u1ed9ng h\u00f3a quy tr\u00ecnh c\u00f4ng vi\u1ec7c v\u1edbi vi\u1ec7c ki\u1ec3m so\u00e1t chi ti\u1ebft cao v\u1ec1 c\u00e1ch n\u1ed9i dung \u0111\u01b0\u1ee3c cache v\u00e0 x\u00f3a cache (cached vs purged). <\/p>\n\n\n<p>L\u01b0u tr\u1eef n\u1ed9i dung tr\u00ean m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Cloudflare gi\u1ea3m nhu c\u1ea7u l\u1ea5y n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c, v\u00e0 l\u00e0m gi\u1ea3m chi ph\u00ed s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c. C\u00e1c kh\u00e1ch h\u00e0ng host trang web c\u1ee7a h\u1ecd v\u1edbi b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u00e1c n\u00e0o c\u1ee7a Cloudflare s\u1ebd ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u nh\u1edd c\u00e1c y\u00eau c\u1ea7u t\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c \u0111\u01b0\u1ee3c chuy\u1ec3n sang cho m\u1ea1ng c\u1ee7a Cloudflare.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"co-nhi\u1ec1u-khach-hang-toan-c\u1ea7u-h\u01a1n\"><span class=\"ez-toc-section\" id=\"Co_nhieu_khach_hang_toan_cau_hon\"><\/span>C\u00f3 nhi\u1ec1u kh\u00e1ch h\u00e0ng to\u00e0n c\u1ea7u h\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare c\u00f3 m\u1ea1ng l\u01b0\u1edbi trung t\u00e2m d\u1eef li\u1ec7u to\u00e0n c\u1ea7u gi\u00fap b\u1ea1n gia t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. M\u1ed7i m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 vai tr\u00f2 nh\u01b0 m\u1ed9t \u0111i\u1ec3m n\u1ed1i\/n\u00fat (node) n\u01a1i n\u1ed9i dung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c cache. <\/p>\n\n\n<p>Cloudflare c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef theo t\u1ea7ng (tiered caching) cho ph\u00e9p c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u Tier-1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u00e1y ch\u1ee7 g\u1ed1c, gi\u1ea3m h\u01a1n n\u1eefa nhu c\u1ea7u l\u1ea5y n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"tranh-tinh-tr\u1ea1ng-ngh\u1ebdn-internet-va-m\u1ea5t-di\u1ec7n\"><span class=\"ez-toc-section\" id=\"Tranh_tinh_trang_nghen_internet_va_mat_dien\"><\/span>Tr\u00e1nh t\u00ecnh tr\u1ea1ng ngh\u1ebdn internet v\u00e0 m\u1ea5t \u0111i\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare h\u1ed7 tr\u1ee3 h\u01a1n 10 tri\u1ec7u t\u00ean mi\u1ec1n tr\u00ean web, v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh \u0111i\u1ec1u h\u01b0\u1edbng c\u00e1c y\u00eau c\u1ea7u n\u1ed9i dung tr\u00ean m\u1ea1ng l\u01b0\u1edbi c\u1ee7a n\u00f3 t\u1edbi con \u0111\u01b0\u1eddng nhanh nh\u1ea5t \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Argo Smart Routing. <\/p>\n\n\n<p>L\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/can-bang-tai-cua-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea3i c\u00e2n b\u1eb1ng th\u00f4ng qua nhi\u1ec1u m\u00e1y ch\u1ee7 g\u1ed1c<\/a> &#8211; c\u00e1i s\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch kh\u00f4ng gian\/th\u1eddi gian (proximity) v\u00e0 \u0111\u1ed9 tr\u1ec5 m\u1ea1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y ch\u1ee7 n\u00e0o hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 y\u00eau c\u1ea7u n\u1ed9i dung \u0111\u1ed9ng (dynamic content).<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2022\/02\/argo.png\" alt=\"\" class=\"wp-image-21299\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2022\/02\/argo.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2022\/02\/argo-300x169.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2022\/02\/argo-768x433.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"gia-tang-kh\u1ea3-nang-ti\u1ebft-ki\u1ec7m-bang-thong\"><span class=\"ez-toc-section\" id=\"Gia_tang_kha_nang_tiet_kiem_bang_thong\"><\/span>Gia t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>N\u1ed9i dung l\u01b0u tr\u1eef tr\u00ean m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Cloudflare gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c b\u1eb1ng c\u00e1ch ph\u1ee5c v\u1ee5 n\u1ed9i dung t\u0129nh t\u1eeb trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a Cloudflare, gi\u1ea3m b\u0103ng th\u00f4ng ti\u00eau th\u1ee5 cho m\u00e1y ch\u1ee7 g\u1ed1c. <\/p>\n\n\n<p>Cloudflare cung c\u1ea5p gi\u00e1 b\u0103ng th\u00f4ng c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n tr\u01b0\u1edbc \u0111\u01b0\u1ee3c, v\u00e0 kh\u00f4ng t\u0103ng gi\u00e1 khi b\u1ea1n b\u1ecb <a href=\"https:\/\/kiencang.net\/ddos-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea5n c\u00f4ng (th\u00ed d\u1ee5 nh\u01b0 DDoS)<\/a>. C\u00e1c kh\u00e1ch h\u00e0ng l\u01b0u tr\u1eef website c\u1ee7a h\u1ecd v\u1edbi \u0111\u1ed1i t\u00e1c c\u1ee7a Cloudflare c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m ho\u1eb7c lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n chi ph\u00ed d\u1eef li\u1ec7u t\u1eeb nh\u00e0 cung c\u1ea5p hosting c\u1ee7a h\u1ecd cho CloudFlare khi n\u1ed9i dung \u0111\u1ed9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/giam-chi-phi-may-chu.png\" alt=\"gi\u1ea3m y\u00eau c\u1ea7u t\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c\" class=\"wp-image-11311\"\/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"ki\u1ec3m-soat-nhi\u1ec1u-h\u01a1n-v\u1edbi-l\u01b0u-tr\u1eef\"><span class=\"ez-toc-section\" id=\"Kiem_soat_nhieu_hon_voi_luu_tru\"><\/span>Ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n v\u1edbi l\u01b0u tr\u1eef<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare cho ph\u00e9p b\u1ea1n \u00e1p d\u1ee5ng c\u00e1c ki\u1ec3m so\u00e1t n\u00e2ng cao c\u00e1ch n\u1ed9i dung \u0111\u01b0\u1ee3c cache tr\u00ean m\u1ea1ng l\u01b0\u1edbi c\u1ee7a n\u00f3. Page Rules (C\u00e1c quy t\u1eafc Trang) cho ph\u00e9p b\u1ea1n ch\u1ec9 \u0111\u1ecbnh c\u00e1c h\u00e0nh vi c\u1ee5 th\u1ec3 tr\u00ean m\u1ed9t s\u1ed1 URL nh\u1ea5t \u0111\u1ecbnh m\u00e0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1i g\u00ec \u0111\u01b0\u1ee3c cache, ho\u1eb7c n\u1ed9i dung n\u00ean \u0111\u01b0\u1ee3c cache trong bao l\u00e2u. <\/p>\n\n\n<p>API Cache c\u1ee7a Cloudflare cho ph\u00e9p c\u00e1c kh\u00e1ch h\u00e0ng c\u00f3 nhi\u1ec1u ki\u1ec3m so\u00e1t h\u01a1n v\u1edbi c\u00e1ch n\u1ed9i dung \u0111\u01b0\u1ee3c cache, v\u00e0 c\u1ea3i thi\u1ec7n t\u1ef7 l\u1ec7 truy c\u1eadp v\u00e0o cache v\u1edbi \u0111\u1ecbnh tuy\u1ebfn n\u00e2ng cao v\u00e0 chu\u1ea9n h\u00f3a URL.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"c\u1ea3i-thi\u1ec7n-tr\u1ea3i-nghi\u1ec7m-m\u1ea1ng-di-d\u1ed9ng\"><span class=\"ez-toc-section\" id=\"Cai_thien_trai_nghiem_mang_di_dong\"><\/span>C\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m m\u1ea1ng di \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Cloudflare ph\u1ee5c v\u1ee5 n\u1ed9i dung cache \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng di \u0111\u1ed9ng nhanh h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n v\u1edbi Mobile SDK. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u \u1ea3nh h\u01b0\u1edfng c\u1ee7a bi\u1ebfn \u0111\u1ed5i m\u1ea1ng di \u0111\u1ed9ng.<\/p>\n\n\n<p>Mikayel Vardanyan, CTO c\u1ee7a PicsArt cho bi\u1ebft:<\/p>\n\n\n<blockquote class=\"wp-block-quote\"><p>V\u1edbi CDN c\u1ee7a Cloudflare, th\u1eddi gian t\u1ea3i \u1ea3nh c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n t\u1eeb 2 \u0111\u1ebfn 3 l\u1ea7n v\u00e0 tr\u00ean h\u1ebft, ch\u00fang t\u00f4i ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c tr\u00ean 50% b\u0103ng th\u00f4ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng h\u00e0ng th\u00e1ng.<\/p><\/blockquote>\n\n\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh:<\/p>\n\n\n<ul><li>H\u1ed7 tr\u1ee3 ng\u01b0\u1eddi d\u00f9ng \u1edf Trung Qu\u1ed1c;<\/li><li>C\u00e1c th\u1ebb cache;<\/li><li>C\u00e1c ph\u1ea7n m\u1edf r\u1ed9ng header ki\u1ec3m so\u00e1t cache;<\/li><li>B\u1ea3o v\u1ec7 ch\u1ed1ng \u0111\u00e1nh l\u1eeba web cache;<\/li><li>H\u1ed7 tr\u1ee3 header ETag;<\/li><li>H\u1ed7 tr\u1ee3 chia s\u1ebb t\u00e0i nguy\u00ean g\u1ed1c ch\u00e9o (CORS);<\/li><li>T\u00f9y ch\u1ec9nh th\u1eddi gian h\u1ebft h\u1ea1n c\u1ee7a cache (TTL);<\/li><li>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn truy c\u1eadp th\u00f4ng minh \u0111\u1ec3 tr\u00e1nh ngh\u1ebdn v\u00e0 tr\u1ec5 m\u1ea1ng;<\/li><li>H\u1ed7 tr\u1ee3 file video HLS v\u00e0 MPEG-DASH;<\/li><li>H\u1ed7 tr\u1ee3 caching theo t\u1ea7ng;<\/li><li>C\u00f3 kh\u1ea3 n\u0103ng l\u1eadp tr\u00ecnh API;<\/li><li>X\u00f3a b\u1ed9 nh\u1edb cache nhanh.<\/li><\/ul>\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u t\u00ednh n\u0103ng CDN c\u1ee7a Cloudfare)<\/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\/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>H\u00f4m n\u1ecd t\u00f4i c\u00f3 h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch s\u1eed d\u1ee5ng Cloudflare, \u1edf b\u00e0i \u0111\u00f3 t\u00f4i ch\u1ee7 y\u1ebfu chia s\u1ebb nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0o n\u00ean d\u00f9ng, v\u00e0 c\u00e1c b\u01b0\u1edbc c\u00e0i \u0111\u1eb7t c\u01a1 b\u1ea3n \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 c\u1ee7a website. Trong b\u00e0i n\u00e0y t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o t\u1eebng t\u00ednh n\u0103ng c\u1ee7a Cloudflare, \u0111i\u1ec3m n\u1ed5i &hellip;<\/p>\n","protected":false},"author":1,"featured_media":13091,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252,257],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u00ednh n\u0103ng CDN c\u1ee7a Cloudflare &#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\/tinh-nang-cdn-cua-cloudflare\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u00ednh n\u0103ng CDN c\u1ee7a Cloudflare &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"H\u00f4m n\u1ecd t\u00f4i c\u00f3 h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch s\u1eed d\u1ee5ng Cloudflare, \u1edf b\u00e0i \u0111\u00f3 t\u00f4i ch\u1ee7 y\u1ebfu chia s\u1ebb nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0o n\u00ean d\u00f9ng, v\u00e0 c\u00e1c b\u01b0\u1edbc c\u00e0i \u0111\u1eb7t c\u01a1 b\u1ea3n \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 c\u1ee7a website. 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