{"id":11404,"date":"2019-01-27T05:27:23","date_gmt":"2019-01-27T05:27:23","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11404"},"modified":"2019-01-27T05:27:23","modified_gmt":"2019-01-27T05:27:23","slug":"rac-roi-cdn","status":"publish","type":"post","link":"https:\/\/kiencang.net\/rac-roi-cdn\/","title":{"rendered":"M\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i th\u01b0\u1eddng g\u1eb7p ph\u1ea3i khi l\u1ea7n \u0111\u1ea7u s\u1eed d\u1ee5ng CDN \u0111\u1ec3 t\u0103ng t\u1ed1c web: m\u1ed9t s\u1ed1 c\u00e1i s\u1ebd \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1ee7 \u0111\u1ed9ng s\u1eeda ch\u1eefa"},"content":{"rendered":"\n<p class=\"has-background\" style=\"background-color:#ff8383\">PS: ph\u1ea7n l\u1edbn c\u00e1c tr\u1ea3i nghi\u1ec7m r\u1eafc r\u1ed1i li\u00ean quan \u0111\u1ebfn d\u1ecbch v\u1ee5 CDN s\u1ebd \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c r\u1ea5t d\u1ec5 d\u00e0ng n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 CDN ch\u1ea5t l\u01b0\u1ee3ng cao, t\u1eadp trung v\u00e0o t\u00ednh ti\u1ec7n d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/kiencang.net\/gioi-thieu-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">BunnyCDN<\/a>.<\/p>\n\n\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y t\u00f4i tr\u00ecnh b\u00e0y m\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i m\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i khi l\u1ea7n \u0111\u1ea7u <a href=\"https:\/\/kiencang.net\/cdn-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 CDN (m\u1ea1ng ph\u00e2n t\u00e1n n\u1ed9i dung) \u0111\u1ec3 t\u0103ng t\u1ed1c website<\/a>, ch\u1ee7 y\u1ebfu cho <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">ng\u01b0\u1eddi d\u00f9ng WordPress<\/a>, nh\u01b0ng c\u00f3 th\u1ec3 c\u00f3 \u00edch c\u1ea3 cho ng\u01b0\u1eddi d\u00f9ng h\u1ec7 qu\u1ea3n tr\u1ecb n\u1ed9i dung kh\u00e1c. T\u00f4i c\u0169ng s\u1ebd n\u00f3i \u0111\u1ebfn m\u1ed9t v\u00e0i d\u1ecbch v\u1ee5 CDN ph\u1ed5 bi\u1ebfn.<\/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-6577d626d1f11\" ><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-6577d626d1f11\"  type=\"checkbox\" id=\"item-6577d626d1f11\"><\/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\/rac-roi-cdn\/#1_Van_de_http_va_https\" title=\"1. V\u1ea5n \u0111\u1ec1 http v\u00e0 https\">1. V\u1ea5n \u0111\u1ec1 http v\u00e0 https<\/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\/rac-roi-cdn\/#2_Tich_hop_dich_vu_CDN_vao_website\" title=\"2. T\u00edch h\u1ee3p d\u1ecbch v\u1ee5 CDN v\u00e0o website\">2. T\u00edch h\u1ee3p d\u1ecbch v\u1ee5 CDN v\u00e0o website<\/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\/rac-roi-cdn\/#3_Anh_khong_tai_duoc_tren_tat_ca_cac_trinh_duyet\" title=\"3. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t\">3. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t<\/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\/rac-roi-cdn\/#4_Anh_khong_tai_duoc_tren_mot_so_trinh_duyet\" title=\"4. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean m\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t\">4. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean m\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t<\/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\/rac-roi-cdn\/#5_Van_de_tien_dung_luong_CDN\" title=\"5. V\u1ea5n \u0111\u1ec1 ti\u1ec1n dung l\u01b0\u1ee3ng CDN\">5. V\u1ea5n \u0111\u1ec1 ti\u1ec1n dung l\u01b0\u1ee3ng CDN<\/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\/rac-roi-cdn\/#6_Dich_vu_CDN_gian_doan\" title=\"6. D\u1ecbch v\u1ee5 CDN gi\u00e1n \u0111o\u1ea1n\">6. D\u1ecbch v\u1ee5 CDN gi\u00e1n \u0111o\u1ea1n<\/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\/rac-roi-cdn\/#7_Trung_lap_noi_dung\" title=\"7. Tr\u00f9ng l\u1eb7p n\u1ed9i dung\">7. Tr\u00f9ng l\u1eb7p n\u1ed9i dung<\/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\/rac-roi-cdn\/#8_Cac_dich_vu_CDN_trong_nuoc_thi_the_nao\" title=\"8. C\u00e1c d\u1ecbch v\u1ee5 CDN trong n\u01b0\u1edbc th\u00ec th\u1ebf n\u00e0o?\">8. C\u00e1c d\u1ecbch v\u1ee5 CDN trong n\u01b0\u1edbc th\u00ec th\u1ebf n\u00e0o?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Van_de_http_va_https\"><\/span>1. V\u1ea5n \u0111\u1ec1 http v\u00e0 https<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>N\u1ebfu trang web c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng https, th\u00ec CDN c\u1ee7a b\u1ea1n c\u0169ng ph\u1ea3i d\u00f9ng https, n\u1ebfu kh\u00f4ng website s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c. C\u00e1c d\u1ecbch v\u1ee5 CDN s\u1ebd cho ph\u00e9p b\u1ea1n c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 b\u1ea3o m\u1eadt cho t\u00ean mi\u1ec1n CDN, c\u00f3 2 c\u00e1ch c\u01a1 b\u1ea3n v\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m \u0111\u00f3 l\u00e0:<\/p>\n\n\n<ol><li><strong>S\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 b\u1ea3o m\u1eadt chung\/chia s\u1ebb (Shared SSL)<\/strong>: \u0111\u00e2y l\u00e0 c\u00e1ch l\u00e0m \u0111\u01a1n gi\u1ea3n nh\u1ea5t, t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN s\u1ebd c\u00f3 SSL ch\u1ec9 th\u00f4ng qua m\u1ed9t thao t\u00e1c, v\u00ed d\u1ee5 c\u1ee7a MaxCDN (StackPath) n\u00f3 s\u1ebd c\u00f3 d\u1ea1ng <code>https:\/\/*.netdna-ssl.com<\/code>, c\u1ee7a CDNSun c\u00f3 d\u1ea1ng <code>https:\/\/*.r.worldssl.net<\/code>; c\u00f2n v\u1edbi KeyCDN n\u00f3 c\u00f3 d\u1ea1ng <code>https:\/\/*.kxcdn.com<\/code>, trong \u0111\u00f3 * l\u00e0 t\u00ean m\u00e0 b\u1ea1n \u0111\u1eb7t cho d\u1ecbch v\u1ee5 CDN c\u1ee7a b\u1ea1n. Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u00e1ch n\u00e0y l\u00e0 t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN kh\u00e1c v\u1edbi t\u00ean mi\u1ec1n g\u1ed1c. V\u00ed d\u1ee5 nh\u01b0 trang c\u1ee7a t\u00f4i l\u00e0 speed.family, nh\u01b0ng t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN c\u00f3 th\u1ec3 l\u00e0 <code>r.worldssl.net<\/code>; \u0111\u00e2y l\u00e0 \u0111i\u1ec1u <em>c\u00f3 th\u1ec3<\/em> kh\u00f4ng t\u1ed1t cho SEO, ngo\u00e0i ra vi\u1ec7c n\u00e0y c\u00f2n d\u1eabn \u0111\u1ebfn chuy\u1ec7n \u0111\u1ecba ch\u1ec9 t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i, khi b\u1ea1n x\u00f3a Pull c\u0169 \u0111\u1ec3 k\u00e9o Pull m\u1edbi ho\u1eb7c khi b\u1ea1n \u0111\u1ed5i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN. (Tuy nhi\u00ean m\u1ed9t th\u1eddi gian sau t\u00f4i ph\u00e1t hi\u1ec7n ra l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n m\u1eb7c \u0111\u1ecbnh c\u1ee7a d\u1ecbch v\u1ee5 CDN <em>c\u00f3 th\u1ec3<\/em> kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng g\u00ec \u0111\u1ebfn SEO c\u1ea3, b\u1ea1n n\u00ean tham kh\u1ea3o \u1edf b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin: <a href=\"https:\/\/kiencang.net\/thiet-lap-ten-mien-tuy-chinh-cdn\/\">https:\/\/kiencang.net\/thiet-lap-ten-mien-tuy-chinh-cdn\/<\/a> Tuy v\u1eady, x\u00e9t cho c\u00f9ng s\u1eed d\u1ee5ng subdomain t\u00ean mi\u1ec1n c\u1ee7a ch\u00ednh website \u0111\u1ec3 l\u00e0m CDN bao gi\u1edd c\u0169ng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n v\u1ec1 nhi\u1ec1u m\u1eb7t).<\/li><li><strong>S\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 b\u1ea3o m\u1eadt mi\u1ec5n ph\u00ed ri\u00eang do b\u1ea1n t\u1ef1 thi\u1ebft l\u1eadp<\/strong>: \u0111\u00e2y l\u00e0 c\u00e1ch m\u1ea5t c\u00f4ng h\u01a1n m\u1ed9t ch\u00fat, nh\u01b0ng b\u1ea1n s\u1ebd c\u00f3 t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN c\u00f3 d\u1ea1ng l\u00e0 subdomain c\u1ee7a b\u1ea1n. V\u00ed d\u1ee5 t\u00ean mi\u1ec1n c\u1ee7a t\u00f4i l\u00e0 kiencang.net th\u00ec t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN c\u1ee7a t\u00f4i c\u00f3 th\u1ec3 l\u00e0 cdn.kiencang.net ch\u1ee9 kh\u00f4ng ph\u1ea3i s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n ngo\u00e0i. Kh\u00f4ng c\u00f3 b\u1eb1ng ch\u1ee9ng ch\u1eafc ch\u1eafn, nh\u01b0ng c\u00e1ch n\u00e0y c\u00f3 v\u1ebb t\u1ed1t cho SEO h\u01a1n, v\u00e0 \u0111\u00e2y c\u0169ng l\u00e0 c\u00e1ch t\u00f4i th\u1ea5y kh\u00e1 nhi\u1ec1u trang s\u1eed d\u1ee5ng CDN \u00e1p d\u1ee5ng. \u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c t\u00ean mi\u1ec1n CDN b\u1ea3o m\u1eadt d\u1ea1ng subdomain d\u00f9ng ri\u00eang, b\u1ea1n c\u1ea7n hai \u0111i\u1ec1u ki\u1ec7n. Th\u1ee9 nh\u1ea5t b\u1ea1n c\u1ea7n c\u00f3 ch\u1ee9ng ch\u1ec9 SSL, l\u00e0 b\u1ed9 kh\u00f3a ch\u1ee9ng ch\u1ec9, b\u1ea1n c\u00f3 th\u1ec3 mua, ho\u1eb7c c\u00f3 mi\u1ec5n ph\u00ed th\u00f4ng qua nh\u1eefng trang nh\u01b0 <a href=\"https:\/\/www.sslforfree.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.sslforfree.com\/<\/a>. Ch\u1ee9ng ch\u1ec9 n\u00e0y sau \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng CDN \u0111\u1ec3 n\u00f3 thi\u1ebft l\u1eadp SSL cho t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN v\u1edbi b\u1ed9 \u0111\u00f4i nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y<img decoding=\"async\" class=\"size-full wp-image-11383 aligncenter\" style=\"width: px;\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/thong-tin-khoa-xac-thuc.png\" alt=\"th\u00f4ng tin x\u00e1c th\u1ef1c v\u00e0 kh\u00f3a\"><\/li><li>B\u01b0\u1edbc th\u1ee9 hai l\u00e0 b\u1ea1n ph\u1ea3i tr\u1ecf t\u00ean mi\u1ec1n CDN subdomain d\u00f9ng ri\u00eang v\u1ec1 \u0111\u1ecba ch\u1ec9 pull g\u1ed1c n\u01a1i l\u01b0u tr\u1eef d\u1eef li\u1ec7u ph\u00e2n t\u00e1n. \u0110\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y b\u1ea1n ch\u1ec9 c\u1ea7n v\u00e0o ch\u1ec9nh s\u1eeda DNS c\u1ee7a t\u00ean mi\u1ec1n, s\u1eed d\u1ee5ng b\u1ea3n ghi CNAME, n\u00f3 s\u1ebd tr\u00f4ng gi\u1ed1ng th\u1ebf n\u00e0y:<img loading=\"lazy\" decoding=\"async\" width=\"655\" height=\"61\" class=\"size-full wp-image-11405 aligncenter\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/tro-ve-cdn-ten-mien.png\" alt=\"tr\u1ecf v\u1ec1 CDN t\u00ean mi\u1ec1n ri\u00eang\"><\/li><\/ol>\n\n\n<p>C\u00e1i b\u1ed9 ch\u1ee9ng ch\u1ec9 SSL \u0111\u1ec3 b\u1ea1n nh\u1eadp v\u00e0o tr\u00f4ng n\u00f3 kh\u00e1 l\u1eb1ng nh\u1eb1ng nh\u01b0 b\u00ean d\u01b0\u1edbi, <strong>b\u1ed9 d\u01b0\u1edbi \u0111\u00e2y ch\u1ec9 l\u00e0 v\u00ed d\u1ee5, c\u1ee7a b\u1ea1n s\u1ebd KH\u00c1C ho\u00e0n to\u00e0n nh\u00e9<\/strong>:<\/p>\n\n\n<pre class=\"wp-block-preformatted\">-----BEGIN CERTIFICATE----- qJ6A0HRD4auyaF3CMxETMNchHwQGdMBSe0BFIzRXanRWa XBCdl5mclRnbJhBDKQQVDYwHwESMlRXY0NVLl12bTpADIQQVDYQEwMRMVFkATYAB VNgBJAzCxUEMAUQBBEQD3bISGqSCG0AMIiAZAIiDIAv IM== -----END CERTIFICATE-----<\/pre>\n\n\n<pre class=\"wp-block-preformatted\">-----BEGIN PRIVATE KEY----- Wbo6CjdgoKVCKGKD+iZGmwV\/zVhCSWt8ujcTqyQ2 tMefgCt7XYjCjg7OehHHAfdjASTg9H7vv8iktK\/glIno2yRxNtbZyPgEffVWVE3zrB1tA\/fn kOFHmdqSpXvgJEWvhCuxE9Q2h0WhPKyMpw9yCSw7dFR -----END PRIVATE KEY-----<\/pre>\n\n\n<p>Th\u01b0\u1eddng th\u00ec ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed SSL sau 3 th\u00e1ng b\u1ea1n s\u1ebd c\u1ea7n ch\u1ee9ng ch\u1ec9 m\u1edbi, do v\u1eady b\u1ea1n <em>c\u1ea7n ph\u1ea3i nh\u1edb th\u1eddi h\u1ea1n \u0111\u1ec3 c\u1eadp nh\u1eadt<\/em>. Ch\u1ed1t l\u1ea1i qu\u1ea3 th\u1ef1c c\u00e1ch n\u00e0y c\u00f3 th\u1ec3 c\u00f3 \u01b0u \u0111i\u1ec3m v\u1ec1 SEO, nh\u01b0ng c\u0169ng c\u00f3 phi\u1ec1n ph\u1ee9c l\u00e0 ph\u1ea3i \u0111\u1ec3 \u00fd, n\u1ebfu kh\u00f4ng khi qu\u00e1 h\u1ea1n website s\u1ebd g\u1eb7p v\u1ea5n \u0111\u1ec1.<\/p>\n\n\n<p class=\"has-light-green-cyan-background-color has-background\">C\u1eadp nh\u1eadt: Tuy nhi\u00ean may m\u1eafn l\u00e0 kh\u00f4ng ph\u1ea3i d\u1ecbch v\u1ee5 CDN n\u00e0o c\u0169ng y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i nh\u1edb th\u1eddi h\u1ea1n v\u00e0 c\u1eadp nh\u1eadt, ch\u1eb3ng h\u1ea1n nh\u01b0 KeyCDN ho\u1eb7c<a href=\"https:\/\/kiencang.net\/gioi-thieu-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\"> BunnyCDN<\/a>, <a href=\"https:\/\/kiencang.net\/cdn-bizflycloud\/\" target=\"_blank\" rel=\"noreferrer noopener\">BizFly<\/a> t\u1ea1o s\u1eb5n ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed v\u00e0 t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt. Ng\u01b0\u1ee3c l\u1ea1i <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cdnsun\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDNSun<\/a> th\u00ec y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i nh\u1edb \u0111\u1ec3 t\u1ef1 gia h\u1ea1n cho ch\u1ee9ng ch\u1ec9.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Tich_hop_dich_vu_CDN_vao_website\"><\/span>2. T\u00edch h\u1ee3p d\u1ecbch v\u1ee5 CDN v\u00e0o website<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Th\u01b0\u1eddng th\u00ec ch\u1ec9 m\u1ea5t t\u1eeb 5 &#8211; 10 ph\u00fat l\u00e0 d\u1ecbch v\u1ee5 CDN c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp c\u00e1c c\u00e0i \u0111\u1eb7t ban \u0111\u1ea7u, v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c r\u1ed3i. \u0110\u1ec3 ki\u1ec3m tra xem CDN \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng hay ch\u01b0a, b\u1ea1n ch\u1ec9 c\u1ea7n thay \u0111\u1ecba ch\u1ec9 m\u1ed9t \u1ea3nh g\u1ed1c b\u1eb1ng m\u1ed9t \u1ea3nh tr\u00ean CDN, n\u1ebfu n\u00f3 hi\u1ec7n ra l\u00e0 \u1ed5n. V\u00ed d\u1ee5:<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/01\/CDN-da-hoat-dong.png\" alt=\"CDN-da-hoat-dong\" class=\"wp-image-11406\"\/><\/figure><\/div>\n\n\n<p>C\u00f3 kh\u00e1 nhi\u1ec1u plugin WordPress gi\u00fap b\u1ea1n t\u00edch h\u1ee3p CDN d\u1ec5 d\u00e0ng v\u00e0o website. Vi\u1ec7c t\u00edch h\u1ee3p n\u00e0y s\u1ebd gi\u00fap trang thay th\u1ebf c\u00e1c \u0111\u01b0\u1eddng d\u1eabn c\u0169 \u0111ang tr\u1ecf v\u1ec1 hosting g\u1ed1c chuy\u1ec3n sang tr\u1ecf v\u1ec1 host ph\u1ee5c v\u1ee5 CDN (thay th\u1ebf c\u00e1c \u0111\u01b0\u1eddng d\u1eabn, bao g\u1ed3m \u1ea3nh, CSS, JS v\u00e0 c\u00e1c n\u1ed9i dung t\u0129nh kh\u00e1c, k\u1ec3 c\u1ea3 file \u00e2m thanh, video n\u1ebfu c\u00f3).<\/p>\n\n\n<p>M\u1ed9t s\u1ed1 plugin l\u00e0m vi\u1ec7c n\u00e0y t\u1ed1t v\u00e0 thao t\u00e1c \u0111\u01a1n gi\u1ea3n ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c <a href=\"https:\/\/kiencang.net\/category\/cache\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin d\u00f9ng \u0111\u1ec3 t\u1ea1o cache<\/a> (v\u1ed1n c\u0169ng hay \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u0103ng t\u1ed1c wordpress<\/a>) nh\u01b0:<\/p>\n\n\n<ul><li><a rel=\"noreferrer noopener\" href=\"https:\/\/wp-rocket.me\/\" target=\"_blank\">WP Rocket<\/a> (c\u00f3 ph\u00ed);<\/li><li><a rel=\"noreferrer noopener\" href=\"https:\/\/kiencang.net\/category\/litespeed\/\" target=\"_blank\">LiteSpeed cache<\/a> (free);<\/li><li><a href=\"https:\/\/kiencang.net\/category\/flying-press\/\" target=\"_blank\" rel=\"noreferrer noopener\">FlyingPress<\/a> (c\u00f3 ph\u00ed);<\/li><li><a rel=\"noreferrer noopener\" href=\"https:\/\/wordpress.org\/plugins\/w3-total-cache\/\" target=\"_blank\">W3 Total cache<\/a> (free\/c\u00f3 ph\u00ed);<\/li><li><a rel=\"noreferrer noopener\" href=\"https:\/\/wordpress.org\/plugins\/wp-super-cache\/\" target=\"_blank\">WP Super cache<\/a> (free).<\/li><\/ul>\n\n\n<p>B\u1ea1n ch\u1ec9 c\u1ea7n v\u00e0o khu v\u1ef1c CDN c\u1ee7a t\u1eebng plugin v\u00e0 paste \u0111\u1ecba ch\u1ec9 t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN v\u00e0o l\u00e0 \u0111\u01b0\u1ee3c. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft h\u01a1n b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam tr\u00ean m\u1ea1ng (th\u01b0\u1eddng th\u00ec trong ph\u1ea7n c\u00e0i \u0111\u1eb7t c\u1ee7a t\u1eebng plugin, n\u00f3 c\u0169ng c\u00f3 h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch l\u00e0m r\u1ed3i).<\/p>\n\n\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng d\u00f9ng c\u00e1c plugin cache \u1edf tr\u00ean ho\u1eb7c n\u1ebfu plugin cache c\u1ee7a b\u1ea1n kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng CDN b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng plugin chuy\u00ean \u0111\u1ec3 t\u00edch h\u1ee3p CDN v\u00e0o website l\u00e0:<\/p>\n\n\n<ul><li><a href=\"https:\/\/wordpress.org\/plugins\/cdn-enabler\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN Enabler<\/a>&nbsp;(mi\u1ec5n ph\u00ed) &#8211; \u0111\u00e2y l\u00e0 plugin \u0111\u01a1n gi\u1ea3n do KeyCDN ph\u00e1t tri\u1ec3n<\/li><\/ul>\n\n\n<p>Plugin kh\u00f4ng n\u00ean d\u00f9ng \u0111\u1ec3 l\u00e0m vi\u1ec7c n\u00e0y l\u00e0:<\/p>\n\n\n<ul><li><a href=\"https:\/\/wordpress.org\/plugins\/wp-fastest-cache\/\" target=\"_blank\" rel=\"noreferrer noopener\">WP Fastest cache<\/a> phi\u00ean b\u1ea3n mi\u1ec5n ph\u00ed (b\u1ea1n c\u00f3 th\u1ec3 <a href=\"https:\/\/kiencang.net\/wp-fastest-cache\/\" target=\"_blank\" rel=\"noreferrer noopener\">xem th\u00eam c\u00e1ch s\u1eed d\u1ee5ng \u1edf \u0111\u00e2y<\/a>), v\u00ec b\u1ea3n n\u00e0y ch\u1ec9 cho t\u1ea1o cache cho b\u1ea3n desktop n\u00ean n\u1ebfu theme c\u1ee7a b\u1ea1n c\u00f3 ri\u00eang phi\u00ean b\u1ea3n di \u0111\u1ed9ng th\u00ec n\u00f3 s\u1ebd kh\u00f4ng c\u00f3 n\u1ed9i dung CDN! (l\u01b0u \u00fd: c\u00e1c giao di\u1ec7n hi\u1ec7n gi\u1edd h\u1ea7u nh\u01b0 l\u00e0 giao di\u1ec7n \u0111\u00e1p \u1ee9ng, kh\u00f4ng c\u1ea7n thi\u1ebft k\u1ebf ri\u00eang tr\u00ean di \u0111\u1ed9ng, nh\u01b0ng m\u1ed9t s\u1ed1 plugin can thi\u1ec7p v\u00e0o chuy\u1ec7n n\u00e0y n\u00ean ngay c\u1ea3 theme ch\u1ec9 d\u00f9ng m\u1ed9t giao di\u1ec7n, plugin c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng v\u00e0 t\u1ea1o ra 2 phi\u00ean b\u1ea3n kh\u00e1c nhau cho desktop v\u00e0 di \u0111\u1ed9ng).<\/li><\/ul>\n\n\n<p>\u0110\u1ec3 ki\u1ec3m tra b\u1ea1n \u0111\u00e3 t\u00edch h\u1ee3p th\u00e0nh c\u00f4ng hay ch\u01b0a,<strong> b\u1ea1n c\u1ea7n tho\u00e1t kh\u1ecfi WordPress, tr\u00ecnh duy\u1ec7t sau \u0111\u00f3 ph\u1ea3i x\u00f3a l\u1ecbch s\u1eed duy\u1ec7t web<\/strong> (ho\u1eb7c xem tr\u00ean tr\u00ecnh duy\u1ec7t \u1ea9n danh), r\u1ed3i v\u00e0o l\u1ea1i trang c\u1ee7a b\u1ea1n. Tr\u00ean tr\u00ecnh duy\u1ec7t b\u1ea1n di chu\u1ed9t \u0111\u1ebfn \u1ea3nh n\u00e0o \u0111\u00f3 tr\u00ean trang, r\u1ed3i chu\u1ed9t ph\u1ea3i m\u1edf h\u00ecnh \u1ea3nh trong tab m\u1edbi, n\u1ebfu \u0111\u1ecba ch\u1ec9 \u1ea3nh gi\u1edd l\u00e0 \u0111\u1ecba ch\u1ec9 t\u00ean mi\u1ec1n ph\u1ee5c v\u1ee5 CDN ngh\u0129a l\u00e0 b\u1ea1n \u0111\u00e3 thay th\u1ebf th\u00e0nh c\u00f4ng.<\/p>\n\n\n<p>P\/S: t\u00f4i l\u1ea7n \u0111\u1ea7u loay hoay c\u1ea3 ti\u1ebfng v\u00ec t\u01b0\u1edfng ch\u01b0a t\u00edch h\u1ee3p \u0111\u01b0\u1ee3c, nh\u01b0ng h\u00f3a ra l\u00e0 do ch\u01b0a x\u00f3a l\u1ecbch s\u1eed duy\u1ec7t web tr\u00ean Chrome n\u00ean n\u00f3 v\u1eabn t\u1ea3i \u1ea3nh t\u1eeb \u0111\u1ecba ch\u1ec9 c\u0169 (<a href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u00e0i nguy\u00ean l\u01b0u \u1edf b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ean tr\u00ecnh duy\u1ec7t<\/a>).<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Anh_khong_tai_duoc_tren_tat_ca_cac_trinh_duyet\"><\/span>3. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>N\u1ebfu b\u1ea1n ki\u1ec3m tra \u1ea3nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean c\u1ea3 3 tr\u00ecnh duy\u1ec7t Chrome, FireFox v\u00e0 Safari th\u00ec c\u00f3 hai kh\u1ea3 n\u0103ng:<\/p>\n\n\n<ul><li>Nguy\u00ean nh\u00e2n \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 c\u00f3 th\u1ec3 m\u00e1y ch\u1ee7 CDN ch\u01b0a k\u00e9o h\u1ebft \u0111\u01b0\u1ee3c n\u1ed9i dung v\u1ec1 (th\u1ef1c t\u1ebf \u00edt khi x\u1ea3y ra) ho\u1eb7c vi\u1ec7c k\u1ebft n\u1ed1i gi\u1eefa \u0111\u1ecba ch\u1ec9 pull g\u1ed1c v\u00e0 \u0111\u1ecba ch\u1ec9 subdomain d\u00f9ng ri\u00eang c\u1ee7a b\u1ea1n ch\u01b0a th\u00e0nh c\u00f4ng (c\u00f3 kh\u1ea3 n\u0103ng x\u1ea3y ra nhi\u1ec1u h\u01a1n, \u0111i\u1ec1u n\u00e0y g\u1eb7p ph\u1ea3i khi m\u00e1y ch\u1ee7 DNS c\u1ee7a b\u1ea1n c\u1eadp nh\u1eadt ch\u1eadm, ho\u1eb7c b\u1ea1n thao t\u00e1c nh\u1ea7m g\u00ec \u0111\u00f3 \u1edf b\u1ea3n ghi CNAME). C\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u1ec3 ki\u1ec3m tra nh\u01b0 t\u00f4i \u0111\u00e3 n\u00f3i \u1edf tr\u00ean l\u00e0 th\u1eed v\u00e0o m\u1ed9t \u1ea3nh th\u00f4ng qua t\u00ean mi\u1ec1n sudomain d\u00f9ng ri\u00eang xem c\u00f3 \u0111\u01b0\u1ee3c kh\u00f4ng l\u00e0 bi\u1ebft li\u1ec1n. B\u1ea1n n\u00ean s\u1eed d\u1ee5ng Cloudflare \u0111\u1ec3 c\u1eadp nh\u1eadt CNAME nhanh h\u01a1n;<\/li><li>M\u00e1y ch\u1ee7 CDN c\u00f3 v\u1ea5n \u0111\u1ec1, n\u1ebfu chuy\u1ec7n n\u00e0y x\u1ea3y ra, trang web th\u01b0\u1eddng c\u0169ng kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c, ho\u1eb7c b\u1ed1 c\u1ee5c web b\u1ecb ph\u00e1 v\u1ee1 ho\u00e0n to\u00e0n. Chuy\u1ec7n n\u00e0y r\u1ea5t hi\u1ebfm khi x\u1ea3y ra, v\u00ec c\u00e1c m\u00e1y ch\u1ee7 l\u00e0m d\u1ecbch v\u1ee5 CDN \u0111\u1ec1u r\u1ea5t m\u1ea1nh v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng thay th\u1ebf cho nhau. D\u00f9 v\u1eady kh\u00f4ng c\u00f3 g\u00ec 100%, khi c\u00f3 s\u1ef1 c\u1ed1 n\u00e0y b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ee3i v\u1ea5n \u0111\u1ec1 kh\u1eafc ph\u1ee5c, ho\u1eb7c n\u1ebfu v\u1eabn c\u00f2n v\u00e0o \u0111\u01b0\u1ee3c trang qu\u1ea3n tr\u1ecb th\u00ec t\u1ea1m th\u1eddi kh\u00f4ng d\u00f9ng CDN n\u1eefa m\u00e0 d\u00f9ng t\u00e0i nguy\u00ean l\u01b0u \u1edf hosting g\u1ed1c;<\/li><li>Ch\u1ee9c n\u0103ng <a href=\"https:\/\/kiencang.net\/category\/lazy-load\/\" target=\"_blank\" rel=\"noreferrer noopener\"><em>lazy load \u0111\u1ec3 t\u1ea3i ch\u1eadm \u1ea3nh<\/em><\/a>&nbsp;(m\u1ed9t t\u00ednh n\u0103ng d\u00f9ng \u0111\u1ec3 t\u0103ng t\u1ed1c website, r\u1ea5t hay \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o c\u00e1c plugin t\u1ea1o cache ho\u1eb7c <a href=\"https:\/\/kiencang.net\/plugin-nen-anh-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c plugin gi\u1ea3m dung l\u01b0\u1ee3ng \u1ea3nh<\/a>) c\u00f3 th\u1ec3 l\u00e0 nguy\u00ean nh\u00e2n, b\u1ea1n th\u1eed t\u1eaft n\u00f3 \u0111i, sau \u0111\u00f3 x\u00f3a cache (clear cache), x\u00f3a l\u1ecbch s\u1eed duy\u1ec7t web r\u1ed3i t\u1ea3i l\u1ea1i xem c\u00f3 t\u1ea3i \u0111\u01b0\u1ee3c \u1ea3nh n\u1eefa kh\u00f4ng.<\/li><\/ul>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Anh_khong_tai_duoc_tren_mot_so_trinh_duyet\"><\/span>4. \u1ea2nh kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean m\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>V\u00ed d\u1ee5 \u1ea3nh t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean Chrome nh\u01b0ng kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c tr\u00ean Safari, sau khi x\u00f3a h\u1ebft l\u1ecbch s\u1eed duy\u1ec7t web, r\u1ed3i ki\u1ec3m tra l\u1ea1i, n\u1ebfu t\u00ecnh tr\u1ea1ng n\u00e0y v\u1eabn di\u1ec5n ra th\u00ec c\u00f3 th\u1ec3 v\u1ea5n \u0111\u1ec1 n\u00e0y li\u00ean quan \u0111\u1ebfn <a href=\"https:\/\/kiencang.net\/dinh-dang-anh-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u1ecbnh d\u1ea1ng \u1ea3nh WebP<\/a>, cho d\u00f9 \u0111\u00e2y l\u00e0 t\u00ecnh hu\u1ed1ng kh\u00e1 hi\u1ebfm g\u1eb7p.<\/p>\n\n\n<p>V\u1ea5n \u0111\u1ec1 tr\u00ean x\u1ea3y ra khi website c\u1ee7a b\u1ea1n hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng plugin n\u00e0o \u0111\u00f3 \u0111\u1ec3 chuy\u1ec3n \u1ea3nh sang \u0111\u1ecbnh d\u1ea1ng WebP nh\u1eb1m t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang (<a href=\"https:\/\/kiencang.net\/nen-mat-du-lieu-jpg-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u1ea3nh WebP nh\u1eb9 h\u01a1n JPG<\/a> v\u00e0 <a href=\"https:\/\/kiencang.net\/png-va-webp\/\" target=\"_blank\" rel=\"noreferrer noopener\">PNG kh\u00e1 nhi\u1ec1u<\/a>, ch\u1ea5t l\u01b0\u1ee3ng g\u1ea7n nh\u01b0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng) v\u00e0 d\u00f9ng mime type \u0111\u1ec3 \u1ea9n \u0111\u1ecbnh d\u1ea1ng th\u1ef1c webp.<\/p>\n\n\n<p>V\u00ec v\u1eady khi d\u1ecbch v\u1ee5 CDN k\u00e9o d\u1eef li\u1ec7u \u1ea3nh v\u1ec1 m\u00e1y ch\u1ee7 c\u1ee7a n\u00f3 th\u00ec n\u00f3 k\u00e9o \u1ea3nh WebP v\u1ec1 (trong khi \u0111u\u00f4i v\u1eabn l\u00e0 JPG, v\u00e0 PNG, nh\u01b0ng v\u1ec1 b\u1ea3n ch\u1ea5t \u0111\u00e2y l\u00e0 \u1ea3nh WebP). V\u00e0 khi ph\u00e2n ph\u1ed1i \u1ea3nh n\u00e0y cho ng\u01b0\u1eddi d\u00f9ng n\u00f3 s\u1ebd l\u00e0 \u1ea3nh webp \u1ea9n d\u01b0\u1edbi \u0111u\u00f4i jpg ho\u1eb7c png, k\u1ebft qu\u1ea3 l\u00e0 c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00f4ng h\u1ed7 tr\u1ee3 webp s\u1ebd kh\u00f4ng hi\u1ec3n th\u1ecb \u0111\u01b0\u1ee3c \u1ea3nh. \u0110\u1ec3 kh\u1eafc ph\u1ee5c b\u1ea1n ch\u1ec9 c\u1ea7n b\u1ecf t\u00ednh n\u0103ng chuy\u1ec3n \u1ea3nh sang WebP, v\u00e0 <a href=\"https:\/\/kiencang.net\/sua-htaccess-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1ecf \u0111o\u1ea1n m\u00e3 chuy\u1ec3n h\u01b0\u1edbng \u1edf file .htaccess<\/a> li\u00ean quan \u0111\u1ebfn WebP l\u00e0 \u0111\u01b0\u1ee3c.<\/p>\n\n\n<p>\u0110\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c WebP th\u00f4ng qua CDN b\u1ea1n c\u1ea7n 2 \u0111i\u1ec1u ki\u1ec7n:<\/p>\n\n\n<ul><li>D\u1ecbch v\u1ee5 CDN c\u00f3 h\u1ed7 tr\u1ee3 webp (hi\u1ec7n h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 \u0111\u1ec1u l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y) ch\u1eb3ng h\u1ea1n BunnyCDN, <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare b\u1ea3n pro<\/a>. \u0110\u00e2y l\u00e0 c\u00e1ch ti\u1ec7n l\u1ee3i nh\u1ea5t \u0111\u1ec3 s\u1eed d\u1ee5ng \u1ea3nh WebP, tuy nhi\u00ean CDN th\u00ec th\u01b0\u1eddng c\u00f3 ph\u00ed, v\u00e0 kh\u00f4ng v\u1edbi m\u1ecdi trang web b\u1ea1n \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng chi tr\u1ea3;<\/li><li>B\u1ea1n s\u1eed d\u1ee5ng bi\u1ec7n ph\u00e1p nh\u1eadn d\u1ea1ng kh\u00e1c \u0111\u1ec3 s\u1eed d\u1ee5ng webp tr\u00ean tr\u00ecnh duy\u1ec7t th\u00edch h\u1ee3p, m\u1ed9t \u1ee9ng vi\u00ean th\u00edch h\u1ee3p \u0111\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y l\u00e0 <a href=\"https:\/\/kiencang.net\/category\/cache-enabler\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin Cache Enabler<\/a> , v\u00ec n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o 2 phi\u00ean b\u1ea3n cache kh\u00e1c nhau, m\u1ed9t b\u1ea3n l\u00e0 \u1ea3nh webp, b\u1ea3n c\u00f2n l\u1ea1i l\u00e0 \u0111\u1ecbnh d\u1ea1ng \u1ea3nh c\u0169 v\u00e0 ph\u00e2n ph\u1ed1i b\u1ea3n cache ph\u00f9 h\u1ee3p cho tr\u00ecnh duy\u1ec7t t\u01b0\u01a1ng \u1ee9ng.<\/li><\/ul>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Van_de_tien_dung_luong_CDN\"><\/span>5. V\u1ea5n \u0111\u1ec1 ti\u1ec1n dung l\u01b0\u1ee3ng CDN<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>D\u1ecbch v\u1ee5 CDN n\u00f3i chung c\u00f3 2 c\u00e1ch t\u00ednh ti\u1ec1n c\u01b0\u1edbc:<\/p>\n\n\n<ul><li>C\u1ed1 \u0111\u1ecbnh h\u00e0ng th\u00e1ng, v\u00ed d\u1ee5 10 USD\/th\u00e1ng nh\u01b0 \u1edf <a href=\"https:\/\/www.stackpath.com\/services\/content-delivery-network-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">Stackpath CDN<\/a>, ho\u1eb7c 20 USD\/th\u00e1ng \u1edf <a href=\"https:\/\/www.cloudflare.com\/plans\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare (g\u00f3i pro)<\/a>&nbsp;(th\u00f4ng tin v\u1ec1 gi\u00e1 v\u00e0o th\u00e1ng 1\/2021). B\u1ea1n d\u00f9ng dung l\u01b0\u1ee3ng bao nhi\u00eau c\u0169ng \u0111\u01b0\u1ee3c, kh\u00f4ng lo t\u1ed1n ti\u1ec1n;<\/li><li>G\u00f3i t\u00ednh theo dung l\u01b0\u1ee3ng, th\u1eadm ch\u00ed \u0111\u00f4i khi c\u1ea3 t\u00ednh th\u00eam ph\u00ed theo s\u1ed1 l\u01b0\u1ee3ng request k\u1ebft n\u1ed1i, th\u01b0\u1eddng c\u00e1c d\u1ecbch v\u1ee5 CDN truy\u1ec1n th\u1ed1ng hay \u00e1p d\u1ee5ng c\u00e1ch n\u00e0y, v\u00ed d\u1ee5 nh\u01b0 <a href=\"https:\/\/www.keycdn.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">KeyCDN<\/a>, <a href=\"https:\/\/cdnsun.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDNSun<\/a>, <a href=\"https:\/\/www.cdn77.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">CDN77<\/a><\/li><\/ul>\n\n\n<p>V\u1edbi chi ph\u00ed CDN t\u00ednh theo dung l\u01b0\u1ee3ng \u1edf Vi\u1ec7t Nam (thu\u1ed9c nh\u00f3m c\u00f3 gi\u00e1 cao so v\u1edbi khu v\u1ef1c kh\u00e1c) dao \u0111\u1ed9ng t\u1eeb 0,1 \u0111\u1ebfn 0,15 USD\/GB th\u00ec nh\u01b0 website c\u1ee7a t\u00f4i c\u0169ng kh\u00e1 nhi\u1ec1u \u1ea3nh, v\u00e0 c\u00f3 kho\u1ea3ng 50 &#8211; 60 ng\u00e0n l\u01b0\u1ee3t xem tr\u00ean th\u00e1ng, t\u00f4i th\u1ea5y th\u1ed1ng k\u00ea t\u1ed1n kho\u1ea3ng 30 &#8211; 50 GB th\u00ec chi ph\u00ed s\u1ebd r\u01a1i t\u1ea7m 4 \u0111\u1ebfn 7,5 USD\/th\u00e1ng. Nh\u01b0 th\u1ebf l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n<p>Tuy nhi\u00ean n\u1ebfu b\u1ea1n n\u00e0o <a href=\"https:\/\/kiencang.net\/tiet-kiem-tien-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">g\u1eb7p v\u1ea5n \u0111\u1ec1 chi ph\u00ed dung l\u01b0\u1ee3ng CDN cao b\u1ea5t th\u01b0\u1eddng<\/a> th\u00ec c\u00f3 th\u1ec3 c\u00f3 3 nguy\u00ean nh\u00e2n:<\/p>\n\n\n<ul><li>L\u01b0u l\u01b0\u1ee3ng truy c\u1eadp website cao bao gi\u1edd c\u0169ng k\u00e9o theo t\u1ed1n dung l\u01b0\u1ee3ng truy\u1ec1n t\u1ea3i. N\u1ebfu nguy\u00ean nh\u00e2n t\u1ed1n dung l\u01b0\u1ee3ng l\u00e0 v\u00ec s\u1ed1 ng\u01b0\u1eddi v\u00e0o web cao th\u00ec n\u00ean vui h\u01a1n l\u00e0 bu\u1ed3n. B\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n sang c\u00e1c d\u1ecbch v\u1ee5 t\u00ednh h\u00e0ng th\u00e1ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y. Ngo\u00e0i ra n\u1ebfu m\u1ee5c \u0111\u00edch CDN c\u1ee7a b\u1ea1n ch\u1ec9 l\u00e0 ph\u00f2ng tr\u00e1nh \u0111\u1ee9t c\u00e1p \u1edf Vi\u1ec7t Nam, th\u1ebf th\u00ec v\u00e0o nh\u1eefng th\u00e1ng b\u00ecnh th\u01b0\u1eddng b\u1ea1n kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng CDN n\u1eefa, c\u00e1c d\u1ecbch v\u1ee5 t\u00ednh theo dung l\u01b0\u1ee3ng th\u01b0\u1eddng cho ph\u00e9p l\u01b0u s\u1ed1 ti\u1ec1n nh\u1eadp v\u00e0o kho\u1ea3ng 1 n\u0103m, theo \u0111\u00f3 h\u00e0ng th\u00e1ng b\u1ea1n kh\u00f4ng d\u00f9ng c\u0169ng kh\u00f4ng sao, s\u1ed1 ti\u1ec1n chuy\u1ec3n sang th\u00e1ng k\u1ebf ti\u1ebfp, h\u1ebft 1 n\u0103m b\u1ea1n kh\u00f4ng d\u00f9ng m\u1edbi b\u1ecb tr\u1eeb h\u1ebft. B\u1ea1n n\u00ean xem ch\u00ednh s\u00e1ch thanh to\u00e1n c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng nh\u00e0 cung c\u1ea5p \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh t\u1ed1i \u01b0u nh\u1ea5t;<\/li><li>N\u1ebfu l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o web kh\u00f4ng cao m\u00e0 dung l\u01b0\u1ee3ng truy\u1ec1n d\u1eef li\u1ec7u l\u1ea1i t\u1ed1n th\u00ec nguy\u00ean nh\u00e2n \u0111\u00f4i khi l\u00e0 do <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-toc-do-tai-anh\/\">c\u00e1c \u1ea3nh qu\u00e1 l\u1edbn tr\u00ean website<\/a>, ngo\u00e0i ra b\u1ea1n n\u00ean ki\u1ec3m tra xem c\u00f3 ph\u1ea3i b\u1ea1n \u0111\u1eb7t c\u00e1c file \u00e2m thanh, nh\u1ea1c hay th\u1eadm ch\u00ed l\u00e0 video n\u1eb7ng tr\u00ean host web kh\u00f4ng? 10 b\u1ee9c \u1ea3nh dung l\u01b0\u1ee3ng l\u1edbn c\u00f3 th\u1ec3 c\u00f3 dung l\u01b0\u1ee3ng 50 MB (ch\u1eb3ng h\u1ea1n c\u00e1c \u1ea3nh l\u1ea5y tr\u1ef1c ti\u1ebfp t\u1eeb th\u1ebb nh\u1edb m\u00e1y \u1ea3nh \u0111\u01b0a l\u00ean web), t\u1ea3i 20 l\u1ea7n \u0111\u00e3 x\u1ea5p x\u1ec9 1GB r\u1ed3i; 1 file nh\u1ea1c trung b\u00ecnh c\u0169ng c\u00f3 th\u1ec3 c\u00f3 dung l\u01b0\u1ee3ng \u0111\u1ebfn 5MB, nghe 100 l\u1ea7n c\u0169ng t\u1ed1n \u0111\u1ebfn 0,5GB; video th\u00ec kh\u1ecfi n\u00f3i, v\u00e0i ph\u00fat c\u0169ng c\u00f3 th\u1ec3 t\u1ed1n h\u00e0ng 100MB. N\u1ebfu \u0111\u00fang, b\u1ea1n c\u1ea7n lo\u1ea1i b\u1ecf v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch cho video, \u00e2m thanh qua l\u01b0u tr\u1eef \u1edf b\u00ean th\u1ee9 3 nh\u01b0 YouTube, SoundCloud, c\u00f2n \u1ea3nh c\u1ea7n gi\u1ea3m dung l\u01b0\u1ee3ng tr\u01b0\u1edbc khi up l\u00ean host ho\u1eb7c s\u1eed d\u1ee5ng plugin t\u1ed1i \u01b0u h\u00f3a \u1ea3nh;<\/li><li>C\u00f3 th\u1ec3 trang n\u00e0o \u0111\u00f3 b\u00ean ngo\u00e0i s\u1eed d\u1ee5ng \u1ea3nh tr\u00ean website c\u1ee7a b\u1ea1n, th\u01b0\u1eddng l\u00e0 do copy b\u00e0i vi\u1ebft, n\u1ebfu b\u1ea1n th\u1ea5y l\u01b0u l\u01b0\u1ee3ng b\u1ecb l\u1ea5y qu\u00e1 l\u1edbn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng gi\u1ea3i ph\u00e1p ch\u1ed1ng hotlink, khi \u0111\u00f3 c\u00e1c website b\u00ean ngo\u00e0i s\u1ebd kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c t\u00e0i nguy\u00ean CDN. Th\u01b0\u1eddng th\u00ec nhi\u1ec1u d\u1ecbch v\u1ee5 CDN c\u00f3 s\u1eb5n t\u00ednh n\u0103ng n\u00e0y tr\u00ean \u1ee9ng d\u1ee5ng c\u1ee7a h\u1ecd.<\/li><\/ul>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Dich_vu_CDN_gian_doan\"><\/span>6. D\u1ecbch v\u1ee5 CDN gi\u00e1n \u0111o\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>[C\u1eadp nh\u1eadt: \u1edf th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i c\u00e1c d\u1ecbch v\u1ee5 CDN c\u00f3 uptime l\u00ean t\u1edbi 100% kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ebfm v\u00ec h\u1ecd c\u00f3 nhi\u1ec1u bi\u1ec7n ph\u00e1p chuy\u1ec3n \u0111\u1ed5i \u0111\u1ec3 n\u1ebfu kh\u00f4ng may m\u1ed9t c\u1ee5m m\u00e1y ch\u1ee7 g\u1eb7p s\u1ef1 c\u1ed1 th\u00ec l\u1eadp t\u1ee9c c\u00f3 c\u1ee5m m\u00e1y ch\u1ee7 kh\u00e1c g\u1ea7n \u0111\u00f3 thay th\u1ebf. Ngo\u00e0i ra c\u00e1c d\u1ecbch v\u1ee5 CDN c\u0169ng r\u1ea5t trung th\u1ef1c trong vi\u1ec7c t\u1ef1 theo d\u00f5i uptime c\u1ee7a ch\u00ednh h\u1ecd, n\u00ean gi\u1edd v\u1ea5n \u0111\u1ec1 b\u1ea1n ch\u1ee7 \u0111\u1ed9ng theo d\u00f5i uptime c\u1ee7a d\u1ecbch v\u1ee5 CDN c\u00f3 l\u1ebd kh\u00f4ng c\u1ea7n thi\u1ebft n\u1eefa. Tuy nhi\u00ean theo d\u00f5i uptime c\u1ee7a hosting th\u00ec v\u1eabn c\u1ea7n, v\u00ec \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a hosting kh\u00f4ng \u0111\u01b0\u1ee3c cao nh\u01b0 v\u1eady].<\/p>\n\n\n<p>Khi ch\u00fang ta s\u1eed d\u1ee5ng CDN, kh\u1ea3 n\u0103ng website b\u1ecb gi\u00e1n \u0111o\u1ea1n ho\u1eb7c ch\u1eadm b\u1ea5t th\u01b0\u1eddng s\u1ebd t\u0103ng l\u00ean. V\u00ec gi\u1edd nguy c\u01a1 gi\u00e1n \u0111o\u1ea1n\/ch\u1eadm web = nguy c\u01a1 gi\u00e1n \u0111o\u1ea1n\/ch\u1eadm hosting + nguy c\u01a1 gi\u00e1n \u0111o\u1ea1n\/ch\u1eadm CDN.<\/p>\n\n\n<p>T\u00f4i t\u1eebng c\u00f3 kinh nghi\u1ec7m x\u1ea5u v\u1edbi MaxCDN v\u1edbi PoP \u1edf Singapore khi b\u1ecb downtime (gi\u00e1n \u0111o\u1ea1n) m\u1ea5y l\u1ea7n trong khi hosting g\u1ed1c th\u00ec kh\u00f4ng l\u00e0m sao, tuy nhi\u00ean t\u00f4i ngh\u0129 \u0111\u00f3 ch\u1ec9 l\u00e0 t\u00ednh th\u1eddi \u0111i\u1ec3m, c\u00f3 th\u1ec3 khi \u0111\u00f3 d\u1ecbch v\u1ee5 \u1edf Sing ch\u01b0a \u1ed5n \u0111\u1ecbnh h\u1eb3n m\u00e0 th\u00f4i. MaxCDN v\u1ec1 sau thu\u1ed9c v\u1ec1 (ho\u1eb7c s\u00e1t nh\u1eadp g\u00ec \u0111\u00f3 t\u00f4i c\u0169ng kh\u00f4ng r\u00f5) StackPath, v\u00e0 thu\u1ed9c nh\u00f3m c\u00e1c c\u00f4ng ty c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng CDN h\u00e0ng \u0111\u1ea7u hi\u1ec7n nay v\u00e0 gi\u00e1 c\u1ea3 r\u1ea5t c\u1ea1nh tranh (h\u1ed3i x\u01b0a MaxCDN c\u00f3 gi\u00e1 kh\u00e1 \u0111\u1eaft).<\/p>\n\n\n<p>\u0110a s\u1ed1 c\u00e1c d\u1ecbch v\u1ee5 CDN \u0111\u1ec1u r\u1ea5t \u1ed5n \u0111\u1ecbnh, v\u00ec b\u1ea3n ch\u1ea5t c\u1ee7a n\u00f3 l\u00e0 \u0111\u1ec3 g\u00f3p ph\u1ea7n t\u0103ng t\u1ed1c v\u00e0 <a rel=\"noreferrer noopener\" href=\"https:\/\/kiencang.net\/website-uptime\/\" target=\"_blank\">duy tr\u00ec t\u00ednh li\u1ec1n m\u1ea1ch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng web<\/a>. T\u00f4i t\u1eebng d\u00f9ng KeyCDN, CDNSun, Cloudflare th\u00ec kh\u00f4ng g\u1eb7p v\u1ea5n \u0111\u1ec1 downtime \u0111\u00e1ng k\u1ec3 n\u00e0o. Tuy nhi\u00ean b\u1ea1n v\u1eabn ph\u1ea3i <a rel=\"noreferrer noopener\" href=\"https:\/\/kiencang.net\/theo-doi-up-time-website\/\" target=\"_blank\">theo d\u00f5i uptime c\u1ee7a trang web<\/a> s\u1eed d\u1ee5ng CDN \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea5t c\u1ee9 v\u1ea5n \u0111\u1ec1 g\u00ec x\u1ea3y ra b\u1ea1n c\u0169ng n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c s\u1edbm nh\u1ea5t c\u00f3 th\u1ec3- \u00edt nh\u1ea5t l\u00e0 tr\u00ean c\u00e1c website quan tr\u1ecdng. C\u0169ng nh\u01b0 \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c t\u1ed5ng quan ch\u1ea5t l\u01b0\u1ee3ng, \u0111\u1ec3 <a href=\"https:\/\/kiencang.net\/tai-sao-ban-nen-biet-nhieu-hinh-thuc-tang-toc-website\/\" target=\"_blank\" rel=\"noreferrer noopener\">chuy\u1ec3n \u0111\u1ed5i sang d\u1ecbch v\u1ee5 kh\u00e1c khi c\u1ea7n<\/a>.<\/p>\n\n\n<p>C\u00e1ch ki\u1ec3m tra uptime (th\u1eddi gian d\u1ecbch v\u1ee5 web li\u1ec1n m\u1ea1ch, kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n) hi\u1ec7n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng r\u1ea5t h\u1ea5p d\u1eabn, trong \u0111\u00f3 c\u00f3 nhi\u1ec1u c\u00e1i mi\u1ec5n ph\u00ed.<\/p>\n\n\n<p>Hi\u1ec7n t\u00f4i d\u00f9ng s\u1ea3n ph\u1ea9m mi\u1ec5n ph\u00ed <a href=\"https:\/\/www.freshworks.com\/website-monitoring\/\" target=\"_blank\" rel=\"noreferrer noopener\">freshping<\/a>, \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 ki\u1ec3m tra li\u00ean t\u1ee5c d\u1ecbch v\u1ee5 m\u1ed7i ph\u00fat m\u1ed9t l\u1ea7n, c\u00e1c d\u1ecbch v\u1ee5 mi\u1ec5n ph\u00ed kh\u00e1c nh\u01b0 <a href=\"https:\/\/uptimerobot.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">uptimerobot<\/a>&nbsp;c\u0169ng hay, nh\u01b0ng t\u1ea7n su\u1ea5t th\u1ea5p h\u01a1n, ph\u1ea3i 5 ph\u00fat m\u1edbi ki\u1ec3m tra m\u1ed9t l\u1ea7n.<\/p>\n\n\n<p>Tuy nhi\u00ean th\u00ec c\u1ea3 2 d\u1ecbch v\u1ee5 tr\u00ean ch\u1ec9 c\u00f3 c\u00e1c m\u00e1y ch\u1ee7 ki\u1ec3m tra n\u1eb1m ngo\u00e0i Vi\u1ec7t Nam, n\u00ean th\u1ef1c t\u1ebf n\u00f3 s\u1ebd kh\u00f4ng ki\u1ec3m tra \u0111\u01b0\u1ee3c d\u1ecbch v\u1ee5 CDN c\u1ee7a b\u1ea1n t\u1ea1i Vi\u1ec7t Nam c\u00f3 li\u1ec1n m\u1ea1ch hay kh\u00f4ng, v\u00ec m\u00e1y ch\u1ee7 \u1edf n\u01b0\u1edbc ngo\u00e0i n\u00f3 s\u1ebd ch\u1ec9 ki\u1ec3m tra \u0111\u01b0\u1ee3c t\u00ednh li\u1ec1n m\u1ea1ch c\u1ee7a CDN c\u1ee7a c\u00e1c PoP g\u1ea7n \u0111\u00f3 nh\u1ea5t, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u1edf PoP t\u1ea1i Vi\u1ec7t Nam. C\u00f3 m\u1ed9t c\u00e1ch t\u1ea1m d\u00f9ng \u0111\u01b0\u1ee3c l\u00e0 b\u1ea1n s\u1eed d\u1ee5ng IP c\u1ee7a m\u00e1y ch\u1ee7 CDN t\u1ea1i Vi\u1ec7t Nam r\u1ed3i d\u00f9ng freshping \u0111\u1ec3 ki\u1ec3m tra, tuy nhi\u00ean c\u00e1ch n\u00e0y kh\u00f4ng ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c, v\u00ec \u1edf \u0111\u00e2y ch\u00fang ta ch\u1ec9 bi\u1ebft \u0111\u01b0\u1ee3c c\u1ee5m m\u00e1y ch\u1ee7 c\u00f3 ch\u1ee9a CDN c\u1ee7a ta ho\u1ea1t \u0111\u1ed9ng, m\u00e0 kh\u00f4ng d\u00e1m ch\u1eafc \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 CDN c\u1ee7a m\u00ecnh s\u1ed1ng.<\/p>\n\n\n<p>Duy nh\u1ea5t c\u00f3 d\u1ecbch v\u1ee5 ki\u1ec3m tra uptime c\u1ee7a <a href=\"https:\/\/www.site24x7.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">site24x7<\/a>&nbsp;(c\u1ee7a Zoho) l\u00e0 c\u00f3 m\u00e1y ch\u1ee7 ki\u1ec3m tra \u0111\u1eb7t t\u1ea1i H\u00e0 N\u1ed9i, do v\u1eady s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 \u1edf \u0111\u00e2y s\u1ebd ch\u00ednh x\u00e1c nh\u1ea5t, nh\u01b0ng b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng b\u1ea3n c\u00f3 ph\u00ed. Gi\u00e1 r\u1ebb nh\u1ea5t l\u00e0 10 USD, c\u0169ng x\u00f3t ti\u1ec1n n\u00ean t\u00f4i ch\u01b0a mua d\u00f9ng, g\u00f3i d\u00f9ng th\u1eed cho ph\u00e9p b\u1ea1n tr\u1ea3i nghi\u1ec7m \u0111\u1ebfn m\u1ed9t th\u00e1ng. T\u00f4i tr\u00ecnh b\u00e0y th\u1ebf, \u0111\u1ec3 b\u1ea1n n\u00e0o c\u00f3 \u0111i\u1ec1u ki\u1ec7n th\u00ec c\u0169ng n\u00ean d\u00f9ng, n\u1ebfu nguy c\u01a1 x\u1ea3y ra gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 \u0111\u00e1ng gi\u00e1 h\u01a1n 10 USD th\u00ec kh\u00f4ng c\u00f3 l\u00fd do g\u00ec m\u00e0 ch\u00fang ta kh\u00f4ng d\u00f9ng c\u1ea3.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Trung_lap_noi_dung\"><\/span>7. Tr\u00f9ng l\u1eb7p n\u1ed9i dung<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>B\u1ea3n ch\u1ea5t c\u1ee7a CDN l\u00e0 \u0111\u1ec3 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u0103ng t\u1ed1c<\/a> v\u00e0 \u0111i\u1ec1u \u0111\u00f3 c\u00f3 l\u1ee3i cho SEO, nh\u01b0ng \u0111\u1ec3 t\u0103ng t\u1ed1c, c\u00e1c d\u1ecbch v\u1ee5 CDN truy\u1ec1n th\u1ed1ng bu\u1ed9c ph\u1ea3i sao l\u01b0u d\u1eef li\u1ec7u g\u1ed1c c\u1ee7a b\u1ea1n tr\u00ean m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00e1c v\u1edbi \u0111\u1ecba ch\u1ec9 t\u00ean mi\u1ec1n ban \u0111\u1ea7u (ngay c\u1ea3 khi b\u1ea1n d\u00f9ng subdomain c\u1ee7a b\u1ea1n \u0111\u1ec3 l\u00e0m \u0111\u1ecba ch\u1ec9 CDN th\u00ec n\u00f3 v\u1eabn \u0111\u01b0\u1ee3c xem l\u00e0 \u0111\u1ecba ch\u1ec9 kh\u00e1c) v\u00e0 \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn tr\u00f9ng l\u1eb7p n\u1ed9i dung v\u00e0 \u1ea3nh h\u01b0\u1edfng SEO t\u01b0\u01a1ng \u0111\u1ed1i nghi\u00eam tr\u1ecdng.<\/p>\n\n\n<p>Kh\u1eafc ph\u1ee5c hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f3, nh\u01b0ng s\u1ef1 kh\u00f3 kh\u0103n c\u1ee7a n\u00f3 n\u1eb1m \u1edf ch\u1ed7 d\u1ec5 g\u00e2y nh\u1ea7m l\u1eabn do c\u00f3 nhi\u1ec1u hi\u1ec3u l\u1ea7m, c\u0169ng nh\u01b0 s\u1ef1 kh\u00f4ng r\u00f5 r\u00e0ng c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm l\u1edbn v\u1ec1 c\u00e1ch h\u1ecd l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c th\u1ebb th\u00f4ng b\u00e1o n\u1ed9i dung tr\u00f9ng l\u1eb7p, k\u00e8m theo nh\u1eefng h\u01b0\u1edbng d\u1eabn c\u0169ng c\u00f3 ph\u1ea7n l\u1eabn l\u1ed9n c\u1ee7a ch\u00ednh c\u00e1c d\u1ecbch v\u1ee5 cung c\u1ea5p CDN. T\u00f4i s\u1ebd vi\u1ebft m\u1ed9t b\u00e0i vi\u1ebft kh\u00e1c \u0111\u1ec3 \u0111\u00e0o s\u00e2u c\u00e2u chuy\u1ec7n n\u00e0y. Nh\u01b0ng t\u1ea1m th\u1eddi c\u00f3 m\u1ed9t s\u1ed1 ng\u1ed9 nh\u1eadn ph\u1ed5 bi\u1ebfn sau m\u00e0 b\u1ea1n kh\u00f4ng n\u00ean l\u00e0m:<\/p>\n\n\n<ul><li><strong>Sai l\u1ea7m 1<\/strong>: S\u1eed d\u1ee5ng robots.txt \u0111\u1ec3 ch\u1eb7n t\u1ea5t c\u1ea3 c\u00e1c b\u1ecd t\u00ecm ki\u1ebfm l\u1eadp ch\u1ec9 m\u1ee5c n\u1ed9i dung CDN;<\/li><li><strong>Sai l\u1ea7m 2<\/strong>: Ho\u1eb7c cho b\u1ecd t\u00ecm ki\u1ebfm l\u1eadp ch\u1ec9 m\u1ee5c n\u1ed9i dung CDN nh\u01b0ng l\u1ea1i kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 \u0111i\u1ec1u ch\u1ec9nh n\u00e0o kh\u00e1c.<\/li><\/ul>\n\n\n<p>C\u1eadp nh\u1eadt: T\u00f4i \u0111\u00e3 ho\u00e0n th\u00e0nh b\u00e0i vi\u1ebft v\u1ec1<a href=\"https:\/\/kiencang.net\/trung-lap-noi-dung-cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\"> ch\u1ed1ng tr\u00f9ng l\u1eb7p n\u1ed9i dung v\u00e0 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng \u1ea3nh kh\u00f4ng \u0111\u01b0\u1ee3c index khi s\u1eed d\u1ee5ng CDN<\/a><\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_Cac_dich_vu_CDN_trong_nuoc_thi_the_nao\"><\/span>8. C\u00e1c d\u1ecbch v\u1ee5 CDN trong n\u01b0\u1edbc th\u00ec th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>T\u00f4i ch\u01b0a d\u00f9ng th\u1eed d\u1ecbch v\u1ee5 CDN trong n\u01b0\u1edbc n\u00ean c\u0169ng kh\u00f4ng r\u00f5, tuy nhi\u00ean m\u1ed9t s\u1ed1 CDN ch\u1ea5t l\u01b0\u1ee3ng nh\u1ea5t m\u00e0 t\u00f4i bi\u1ebft c\u00f3 kh\u00e1ch h\u00e0ng m\u1ee5c ti\u00eau ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c website r\u1ea5t l\u1edbn (nh\u01b0 c\u00e1c trang tin t\u1ee9c h\u00e0ng \u0111\u1ea7u, trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed l\u1edbn). D\u1ecbch v\u1ee5 CDN cho nh\u00f3m kh\u00e1ch h\u00e0ng nh\u1ecf ch\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng chi ti\u00eau d\u01b0\u1edbi 200 ng\u00e0n\/th\u00e1ng kh\u00f4ng c\u00f3 nhi\u1ec1u.<\/p>\n\n\n<p>C\u1eadp nh\u1eadt: l\u1ea7n \u0111\u1ea7u ti\u00ean, t\u00f4i d\u00f9ng d\u1ecbch v\u1ee5 CDN trong n\u01b0\u1edbc c\u00f3 t\u00ean BizFly, h\u1ecd c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o \u0111\u00e1nh gi\u00e1 \u1edf \u0111\u00e2y: <a href=\"https:\/\/kiencang.net\/cdn-bizflycloud\/\" target=\"_blank\" rel=\"noreferrer noopener\">speed.family\/cdn-bizflycloud\/<\/a><\/p>\n\n\n<p><strong>Xem th\u00eam:<\/strong><\/p>\n\n\n<ul><li><a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cdnsun\/\" target=\"_blank\" rel=\"noreferrer noopener\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng CDNSun, d\u1ecbch v\u1ee5 CDN c\u00f3 PoP \u1edf Vi\u1ec7t Nam \u0111\u1ec3 t\u0103ng t\u1ed1c website<\/a><\/li><li><a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Cloudflare \u0111\u1ec3 t\u0103ng t\u1ed1c website, d\u1ecbch v\u1ee5 CDN ti\u00ean ti\u1ebfn, c\u00e0i \u0111\u1eb7t \u0111\u01a1n gi\u1ea3n<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>PS: ph\u1ea7n l\u1edbn c\u00e1c tr\u1ea3i nghi\u1ec7m r\u1eafc r\u1ed1i li\u00ean quan \u0111\u1ebfn d\u1ecbch v\u1ee5 CDN s\u1ebd \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c r\u1ea5t d\u1ec5 d\u00e0ng n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 CDN ch\u1ea5t l\u01b0\u1ee3ng cao, t\u1eadp trung v\u00e0o t\u00ednh ti\u1ec7n d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 BunnyCDN. Trong b\u00e0i vi\u1ebft n\u00e0y t\u00f4i tr\u00ecnh b\u00e0y m\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i m\u00e0 ch\u00fang ta &hellip;<\/p>\n","protected":false},"author":1,"featured_media":13079,"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>M\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i th\u01b0\u1eddng g\u1eb7p ph\u1ea3i khi l\u1ea7n \u0111\u1ea7u s\u1eed d\u1ee5ng CDN \u0111\u1ec3 t\u0103ng t\u1ed1c web: m\u1ed9t s\u1ed1 c\u00e1i s\u1ebd \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1ee7 \u0111\u1ed9ng s\u1eeda ch\u1eefa &#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\/rac-roi-cdn\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u1ed9t s\u1ed1 r\u1eafc r\u1ed1i th\u01b0\u1eddng g\u1eb7p ph\u1ea3i khi l\u1ea7n \u0111\u1ea7u s\u1eed d\u1ee5ng CDN \u0111\u1ec3 t\u0103ng t\u1ed1c web: m\u1ed9t s\u1ed1 c\u00e1i s\u1ebd \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng n\u1ebfu b\u1ea1n kh\u00f4ng ch\u1ee7 \u0111\u1ed9ng s\u1eeda ch\u1eefa &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"PS: ph\u1ea7n l\u1edbn c\u00e1c tr\u1ea3i nghi\u1ec7m r\u1eafc r\u1ed1i li\u00ean quan \u0111\u1ebfn d\u1ecbch v\u1ee5 CDN s\u1ebd \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c r\u1ea5t d\u1ec5 d\u00e0ng n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 CDN ch\u1ea5t l\u01b0\u1ee3ng cao, t\u1eadp trung v\u00e0o t\u00ednh ti\u1ec7n d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 BunnyCDN. 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