{"id":12369606,"date":"2026-03-15T02:45:02","date_gmt":"2026-03-14T18:45:02","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/cdn%e5%8a%a0%e9%80%9f%e5%8e%9f%e7%90%86%e5%85%a8%e8%a7%a3%e6%9e%90%ef%bc%9a%e5%a6%82%e4%bd%95%e6%8f%90%e5%8d%87%e7%bd%91%e7%ab%99%e6%80%a7%e8%83%bd%e5%92%8c%e7%94%a8%e6%88%b7%e4%bd%93%e9%aa%8c\/"},"modified":"2026-03-15T03:16:09","modified_gmt":"2026-03-14T19:16:09","slug":"cdn-acceleration-principle-how-to-improve-website-performance-and-user","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/cdn\/cdn-acceleration-principle-how-to-improve-website-performance-and-user\/","title":{"rendered":"To\u00e0n b\u1ed9 ph\u00e2n t\u00edch nguy\u00ean l\u00fd t\u0103ng t\u1ed1c CDN: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t website v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng"},"content":{"rendered":"

Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t trang web, n\u1ebfu m\u00e1y ch\u1ee7 n\u1eb1m c\u00e1ch h\u1ecd kh\u00e1 xa, d\u1eef li\u1ec7u s\u1ebd ph\u1ea3i di chuy\u1ec3n qua qu\u00e3ng \u0111\u01b0\u1eddng v\u1eadt l\u00fd d\u00e0i, d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang ch\u1eadm, video b\u1ecb gi\u1eadt, h\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c t\u1ea3i ch\u1eadm, v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00e1c. M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (Content Delivery Network \u2013 CDN) ch\u00ednh l\u00e0 gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 gi\u1ea3i quy\u1ebft nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ed1t l\u00f5i n\u00e0y. \u00dd t\u01b0\u1edfng c\u01a1 b\u1ea3n c\u1ee7a CDN l\u00e0 l\u01b0u tr\u1eef n\u1ed9i dung trang web (nh\u01b0 HTML, CSS, JavaScript, h\u00ecnh \u1ea3nh, video, v.v.) trong c\u00e1c m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Nh\u1edd \u0111\u00f3, khi ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u truy c\u1eadp n\u1ed9i dung, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c truy xu\u1ea5t ngay t\u1eeb m\u00e1y ch\u1ee7 g\u1ea7n nh\u1ea5t, gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng g\u1eedi y\u00eau c\u1ea7u, h\u1ec7 th\u1ed1ng CDN s\u1ebd s\u1eafp x\u1ebfp th\u00f4ng minh \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u \u0111\u00f3 \u0111\u1ebfn n\u00fat c\u1ea1nh (edge node) n\u1eb1m g\u1ea7n nh\u1ea5t v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd v\u00e0 c\u00f3 t\u1ea3i nh\u1eb9 nh\u1ea5t. Nh\u1edd \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n ph\u1ea3i l\u1ea5y d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c (source server) \u1edf xa x\u00f4i v\u00e0 c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i, m\u00e0 c\u00f3 th\u1ec3 nhanh ch\u00f3ng nh\u1eadn \u0111\u01b0\u1ee3c n\u1ed9i dung c\u1ea7n thi\u1ebft t\u1eeb \u201ckho l\u01b0u tr\u1eef k\u1ef9 thu\u1eadt s\u1ed1\u201d g\u1ea7n nh\u1ea5t. Qu\u00e1 tr\u00ecnh n\u00e0y ho\u00e0n to\u00e0n trong su\u1ed1t \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng; h\u1ecd ch\u1ec9 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c r\u1eb1ng trang web m\u1edf nhanh h\u01a1n v\u00e0 video ph\u00e1t ch\u1ea1y m\u01b0\u1ee3t m\u00e0 h\u01a1n.<\/p>\n\n\n\n

Ki\u1ebfn tr\u00fac n\u00e0y kh\u00f4ng ch\u1ec9 gi\u1ea3m b\u1edbt \u00e1p l\u1ef1c tr\u1ef1c ti\u1ebfp l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 chi ph\u00ed b\u0103ng th\u00f4ng, m\u00e0 quan tr\u1ecdng h\u01a1n, n\u00f3 c\u00f2n gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 t\u1ef7 l\u1ec7 m\u1ea5t g\u00f3i d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch r\u00fat ng\u1eafn kho\u1ea3ng c\u00e1ch v\u1eadt l\u00fd v\u00e0 m\u1ea1ng gi\u1eefa c\u00e1c \u0111i\u1ec3m truy c\u1eadp, t\u1eeb \u0111\u00f3 n\u00e2ng cao \u0111\u00e1ng k\u1ec3 tr\u1ea3i nghi\u1ec7m s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i.<\/p>\n

\u0110\u1ecdc th\u00eam Nguy\u00ean l\u00fd t\u0103ng t\u1ed1c CDN to\u00e0n di\u1ec7n: C\u00e1ch c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t website v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a>\u3002<\/p>\n\n\n\n\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i v\u00e0 quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a CDN (Content Delivery Network \u2013 M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung)<\/h2>\n\n\n\n

\u0110\u1ec3 hi\u1ec3u c\u00e1ch CDN ho\u1ea1t \u0111\u1ed9ng, ch\u00fang ta c\u00f3 th\u1ec3 ph\u00e2n t\u00edch n\u00f3 th\u00e0nh m\u1ed9t quy tr\u00ecnh r\u00f5 r\u00e0ng v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a. Quy tr\u00ecnh n\u00e0y ch\u1ee7 y\u1ebfu bao g\u1ed3m b\u1ed1n b\u00ean ch\u00ednh: ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i, h\u1ec7 th\u1ed1ng DNS c\u1ee5c b\u1ed9, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ph\u1ed1i th\u00f4ng minh c\u1ee7a CDN (ch\u1eb3ng h\u1ea1n nh\u01b0 GSLB), v\u00e0 c\u00e1c n\u00fat bi\u00ean ph\u00e2n t\u00e1n.<\/p>\n\n

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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\\nbunny.net\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\t\\nbunny.net CDN<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tChi ph\u00ed ch\u1ec9 t\u1eeb 1 \u0111\u00f4 la m\u1ed7i th\u00e1ng, v\u1edbi m\u1ee9c ph\u00ed r\u00f5 r\u00e0ng v\u00e0 kh\u00f4ng c\u00f3 chi ph\u00ed \u1ea9n. C\u00e1c t\u00ednh n\u0103ng bao g\u1ed3m l\u01b0u tr\u1eef v\u0129nh vi\u1ec5n, gi\u00e1m s\u00e1t theo th\u1eddi gian th\u1ef1c, b\u1ea3o v\u1ec7 DDoS v\u00e0 ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed. \u0110\u1eb7c bi\u1ec7t, n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho ph\u00e1t tr\u1ef1c tuy\u1ebfn video v\u00e0 cung c\u1ea5p m\u1ed9t m\u00f4 h\u00ecnh thanh to\u00e1n linh ho\u1ea1t theo m\u1ee9c s\u1eed d\u1ee5ng.<\/span>\r\n\t\t\t\t
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Kh\u00f4ng c\u1ea7n th\u1ebb t\u00edn d\u1ee5ng, d\u00f9ng th\u1eed mi\u1ec5n ph\u00ed trong 14 ng\u00e0y<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp m\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) c\u1ee7a bunny.net \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n\t\r\n\t
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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0110\u00e1m\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\t\u0110\u00e1m m\u00e2y Cloudways Cloudflare Enterprise<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tG\u00f3i gi\u00e1 d\u1ecbch v\u1ee5 CDN\/WAF c\u1ea5p doanh nghi\u1ec7p c\u1ee7a Cloudflare c\u00f3 c\u00e1c m\u1ee9c ph\u00ed nh\u01b0 sau: t\u1ed1i \u0111a 5 t\u00ean mi\u1ec1n, m\u1ed7i t\u00ean mi\u1ec1n c\u00f3 gi\u00e1 4,99 USD\/th\u00e1ng, bao g\u1ed3m 100GB b\u0103ng th\u00f4ng, v\u00e0 ph\u1ea7n v\u01b0\u1ee3t qu\u00e1 s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh ph\u00ed theo m\u1ee9c ph\u00ed 0,02 USD\/GB.<\/span>\r\n\t\t\t\t
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M\u1ed7i t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c t\u1eb7ng 100GB l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Cloudways Cloudflare Enterprise \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n<\/div>\r\n\r\n\r\n\n\n\n\n\n\n\n

Ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 g\u1eedi y\u00eau c\u1ea7u (request).<\/h3>\n\n\n\n

M\u1ecdi th\u1ee9 b\u1eaft \u0111\u1ea7u khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp \u0111\u1ecba ch\u1ec9 web ho\u1eb7c nh\u1ea5p v\u00e0o m\u1ed9t li\u00ean k\u1ebft trong tr\u00ecnh duy\u1ec7t. \u0110\u1ec3 l\u1ea5y n\u1ed9i dung trang web, tr\u00ecnh duy\u1ec7t c\u1ea7n ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP c\u1ee5 th\u1ec3 c\u1ee7a m\u00e1y ch\u1ee7, v\u00ec v\u1eady n\u00f3 s\u1ebd g\u1eedi y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh s\u1eb5n tr\u00ean h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

DNS gi\u1ea3i m\u00e3 th\u00f4ng minh<\/h3>\n\n\n\n

\u0110\u00e2y ch\u00ednh l\u00e0 \u201cb\u1ed9 n\u00e3o\u201d \u0111i\u1ec1u khi\u1ec3n qu\u00e1 tr\u00ecnh t\u0103ng t\u1ed1c d\u1eef li\u1ec7u th\u00f4ng qua CDN v\u00e0 c\u0169ng l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh n\u00e0y. C\u00e1c m\u00e1y ch\u1ee7 DNS c\u1ee5c b\u1ed9 s\u1ebd g\u1eedi y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (DNS request) \u0111\u1ebfn m\u00e1y ch\u1ee7 DNS ch\u00ednh th\u1ee9c c\u1ee7a trang web; m\u00e1y ch\u1ee7 DNS n\u00e0y th\u01b0\u1eddng \u0111\u00e3 \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN qu\u1ea3n l\u00fd ho\u1eb7c \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean mi\u1ec1n con (CNAME) \u0111\u1ec3 tr\u1ecf \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 kh\u00e1c. H\u1ec7 th\u1ed1ng ph\u00e2n b\u1ed5 t\u1ea3i to\u00e0n c\u1ea7u (global load balancing) c\u1ee7a CDN s\u1ebd l\u1ef1a ch\u1ecdn m\u1ed9t node (n\u00fat) g\u1ea7n ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t v\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 x\u1eed l\u00fd y\u00eau c\u1ea7u d\u1ef1a tr\u00ean m\u1ed9t lo\u1ea1t c\u00e1c thu\u1eadt to\u00e1n ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n

C\u00e1c y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh bao g\u1ed3m: v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng (\u0111\u1ec3 ch\u1ecdn n\u00fat g\u1ea7n nh\u1ea5t), t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ea3i c\u1ee7a t\u1eebng n\u00fat bi\u00ean, t\u00ecnh tr\u1ea1ng k\u1ebft n\u1ed1i m\u1ea1ng, v\u00e0 th\u1eadm ch\u00ed ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i m\u1ea1ng v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. Cu\u1ed1i c\u00f9ng, GSLB s\u1ebd tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a n\u00fat bi\u00ean t\u1ed1i \u01b0u cho h\u1ec7 th\u1ed1ng DNS c\u1ee5c b\u1ed9 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

Ph\u1ea3n h\u1ed3i t\u1eeb c\u00e1c n\u00fat bi\u00ean (edge nodes) v\u00e0 vi\u1ec7c truy xu\u1ea5t ngu\u1ed3n d\u1eef li\u1ec7u (backloading)<\/h3>\n\n\n\n

Sau khi tr\u00ecnh duy\u1ec7t ng\u01b0\u1eddi d\u00f9ng nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP c\u1ee7a n\u00fat bi\u00ean (edge node), n\u00f3 s\u1ebd tr\u1ef1c ti\u1ebfp g\u1eedi y\u00eau c\u1ea7u n\u1ed9i dung \u0111\u1ebfn n\u00fat \u0111\u00f3. N\u00fat bi\u00ean s\u1ebd ki\u1ec3m tra xem trong b\u1ed9 \u0111\u1ec7m c\u1ee7a m\u00ecnh c\u00f3 s\u1eb5n b\u1ea3n sao c\u1ee7a n\u1ed9i dung m\u00e0 ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u hay kh\u00f4ng.<\/p>\n

\u0110\u1ecdc th\u00eam H\u01b0\u1edbng d\u1eabn t\u1ed1i \u01b0u h\u00f3a to\u00e0n di\u1ec7n trang web WordPress: T\u1eeb m\u00e3 ngu\u1ed3n \u0111\u1ebfn c\u01a1 ch\u1ebf l\u01b0u tr\u1eef \u0111\u1ec7m (cache) \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t<\/a>\u3002<\/p>\n\n\n\n\n

N\u1ebfu trong b\u1ed9 \u0111\u1ec7m c\u00f3 n\u1ed9i dung h\u1ee3p l\u1ec7 v\u00e0 ch\u01b0a h\u1ebft h\u1ea1n (t\u1ee9c l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u201c\u0111\u1ec7m tr\u00fang\u201d), c\u00e1c n\u00fat c\u1ea1nh (edge nodes) s\u1ebd tr\u1ef1c ti\u1ebfp tr\u1ea3 n\u1ed9i dung \u0111\u00f3 cho ng\u01b0\u1eddi d\u00f9ng v\u1edbi t\u1ed1c \u0111\u1ed9 r\u1ea5t nhanh. N\u1ebfu trong b\u1ed9 \u0111\u1ec7m kh\u00f4ng c\u00f3 n\u1ed9i dung c\u1ea7n thi\u1ebft, ho\u1eb7c n\u1ed9i dung \u0111\u00e3 h\u1ebft h\u1ea1n (t\u1ee9c l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u201c\u0111\u1ec7m kh\u00f4ng tr\u00fang\u201d), c\u00e1c n\u00fat c\u1ea1nh s\u1ebd ngay l\u1eadp t\u1ee9c g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 ngu\u1ed3n (source server) \u0111\u1ec3 l\u1ea5y n\u1ed9i dung m\u1edbi nh\u1ea5t. Khi tr\u1ea3 n\u1ed9i dung cho ng\u01b0\u1eddi d\u00f9ng, c\u00e1c n\u00fat c\u1ea1nh c\u0169ng s\u1ebd l\u01b0u tr\u1eef n\u1ed9i dung \u0111\u00f3 theo c\u00e1c quy t\u1eafc \u0111\u1ec7m \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp s\u1eb5n, \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho nh\u1eefng ng\u01b0\u1eddi d\u00f9ng kh\u00e1c trong khu v\u1ef1c l\u00e2n c\u1eadn trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

N\u1ed9i dung \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 c\u1eadp nh\u1eadt li\u00ean t\u1ee5c.<\/h3>\n\n\n\n

N\u1ed9i dung \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 \u0111\u1ec7m (cache) kh\u00f4ng \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i v\u0129nh vi\u1ec5n. C\u00e1c h\u1ec7 th\u1ed1ng CDN (Content Delivery Networks) tu\u00e2n theo m\u1ed9t s\u1ed1 quy t\u1eafc nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u1eddi gian h\u1ebft h\u1ea1n c\u1ee7a n\u1ed9i dung \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 \u0111\u1ec7m; nh\u1eefng quy t\u1eafc n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi trang web ngu\u1ed3n th\u00f4ng qua c\u00e1c ti\u00eaCache-Control<\/code>\u3001Expires<\/code>N\u1ed9i dung \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t th\u00f4ng qua c\u00e1c giao th\u1ee9c nh\u1ea5t \u0111\u1ecbnh. Khi n\u1ed9i dung h\u1ebft h\u1ea1n, c\u00e1c n\u00fat \u0111\u1ea7u cu\u1ed1i (edge nodes) s\u1ebd li\u00ean h\u1ec7 l\u1ea1i v\u1edbi m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server) \u0111\u1ec3 l\u1ea5y phi\u00ean b\u1ea3n m\u1edbi. Ngo\u00e0i ra, CDN c\u0169ng h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng \u201ct\u00e1i t\u1ea1o b\u1ed9 \u0111\u1ec7m\u201d (cache refresh), cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean trang web t\u1ef1 \u0111\u1ed9ng x\u00f3a c\u00e1c b\u1ed9 \u0111\u1ec7m c\u0169 tr\u00ean c\u00e1c n\u00fat \u0111\u1ea7u cu\u1ed1i, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp ngay v\u00e0o n\u1ed9i dung m\u1edbi nh\u1ea5t<\/p>\n\n\n\n

Ph\u00e2n t\u00edch c\u00e1c c\u00f4ng ngh\u1ec7 ch\u00ednh gi\u00fap t\u0103ng t\u1ed1c hi\u1ec7u su\u1ea5t c\u1ee7a CDN (Content Delivery Network)<\/h2>\n\n\n\n

CDN kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c m\u00e1y ch\u1ee7; \u0111\u1eb1ng sau n\u00f3 \u1ea9n ch\u1ee9a s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a nhi\u1ec1u c\u00f4ng ngh\u1ec7 m\u1ea1ng v\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh, t\u1ea1o n\u00ean m\u1ed9t d\u1ecbch v\u1ee5 t\u0103ng t\u1ed1c hi\u1ec7u qu\u1ea3 v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 c\u00e2n b\u1eb1ng t\u1ea3i<\/h3>\n\n\n\n

C\u00e2n b\u1eb1ng t\u1ea3i l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a CDN, n\u00f3 \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 h\u1ee3p l\u00fd \u0111\u1ebfn n\u00fat ph\u00f9 h\u1ee3p nh\u1ea5t, tr\u00e1nh qu\u00e1 t\u1ea3i cho m\u1ed9t n\u00fat \u0111\u01a1n l\u1ebb. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e2n b\u1eb1ng t\u1ea3i \u1edf l\u1edbp DNS (nh\u01b0 GSLB \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean), c\u00e2n b\u1eb1ng t\u1ea3i \u1edf l\u1edbp \u1ee9ng d\u1ee5ng (nh\u01b0 l\u1eadp l\u1ecbch d\u1ef1a tr\u00ean y\u00eau c\u1ea7u HTTP) v\u00e0 c\u00e2n b\u1eb1ng t\u1ea3i \u1edf l\u1edbp m\u1ea1ng. C\u00e2n b\u1eb1ng t\u1ea3i th\u00f4ng minh \u0111\u1ea3m b\u1ea3o t\u1ed1i \u0111a h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean m\u1ea1ng CDN v\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng cao khi truy c\u1eadp.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef \u0111\u1ec7m<\/h3>\n\n\n\n

L\u01b0u tr\u1eef \u0111\u1ec7m (cache) l\u00e0 ph\u01b0\u01a1ng th\u1ee9c tr\u1ef1c ti\u1ebfp gi\u00fap CDN (Content Delivery Network) t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i n\u1ed9i dung. C\u00e1c n\u00fat \u0111\u1ea7u cu\u1ed1i (edge nodes) s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef hi\u1ec7u su\u1ea5t cao v\u00e0 c\u00e1c thu\u1eadt to\u00e1n l\u01b0u tr\u1eef \u0111\u1ec7m hi\u1ec7u qu\u1ea3 \u0111\u1ec3 qu\u1ea3n l\u00fd l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u. Y\u1ebfu t\u1ed1 then ch\u1ed1t n\u1eb1m \u1edf vi\u1ec7c thi\u1ebft k\u1ebf chi\u1ebfn l\u01b0\u1ee3c
\n* \u54ea\u4e9b\u5185\u5bb9\u9700\u8981\u7f13\u5b58\uff08\u901a\u5e38\u7f13\u5b58\u9759\u6001\u8d44\u6e90\uff09\u3002
\n* \u7f13\u5b58\u591a\u4e45\uff08TTL\u7ba1\u7406\uff09\u3002
\n* \u5982\u4f55\u5e94\u5bf9\u52a8\u6001\u5185\u5bb9\uff08\u8fb9\u7f18\u8ba1\u7b97\u3001\u52a8\u6001\u52a0\u901f\uff09\u3002
\n* \u7f13\u5b58\u5982\u4f55\u5931\u6548\u548c\u66f4\u65b0\uff08\u901a\u8fc7\u8fc7\u671f\u5934\u6216\u4e3b\u52a8\u5237\u65b0\uff09\u3002<\/p>\n\n\n\n

T\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng<\/h3>\n\n\n\n

Truy\u1ec1n th\u1ed1ng, c\u00e1c h\u1ec7 th\u1ed1ng CDN (Content Delivery Networks) r\u1ea5t gi\u1ecfi trong vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i c\u00e1c n\u1ed9i dung t\u0129nh. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c n\u1ed9i dung \u0111\u1ed9ng y\u00eau c\u1ea7u t\u01b0\u01a1ng t\u00e1c th\u1eddi gian th\u1ef1c v\u1edbi m\u00e1y ch\u1ee7 (ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c y\u00eau c\u1ea7u API ho\u1eb7c c\u00e1c trang web \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh theo ng\u01b0\u1eddi d\u00f9ng), CDN c\u0169ng \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng ngh\u1ec7 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i cho n\u1ed9i dung \u0111\u1ed9ng. C\u00e1c c\u00f4ng ngh\u1ec7 n\u00e0y bao g\u1ed3m vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n (ch\u1ecdn c\u00e1c l\u1ed9 tr\u00ecnh m\u1ea1ng \u1ed5n \u0111\u1ecbnh h\u01a1n, c\u00f3 \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n), s\u1eed d\u1ee5ng c\u00e1c c\u01a1 ch\u1ebf t\u1ed1i \u01b0u h\u00f3a c\u1ee7a giao th\u1ee9c TCP\/IP (nh\u01b0 \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc c\u1eeda s\u1ed5 truy\u1ec1n d\u1eef li\u1ec7u, k\u00edch ho\u1ea1t ch\u1ee9c n\u0103ng truy\u1ec1n l\u1ea1i d\u1eef li\u1ec7u nhanh), v\u00e0 th\u1eadm ch\u00ed l\u00e0 t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a d\u1eef li\u1ec7u b\u1eb1ng giao th\u1ee9c SSL\/TLS, nh\u1eb1m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 khi th\u1ef1c hi\u1ec7n c\u00e1c<\/p>\n

\u0110\u1ecdc th\u00eam Gi\u1ea3i th\u00edch chi ti\u1ebft nguy\u00ean l\u00fd t\u0103ng t\u1ed1c c\u1ee7a CDN: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 mang \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m truy c\u1eadp nhanh ch\u00f3ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi cho trang web c\u1ee7a b\u1ea1n<\/a>\u3002<\/p>\n\n\n\n\n

An to\u00e0n v\u00e0 B\u1ea3o v\u1ec7<\/h3>\n\n\n\n

CDN (Content Delivery Network) hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 tr\u1edf th\u00e0nh tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean trong b\u1ea3o m\u1eadt m\u1ea1ng. Nh\u1edd c\u1ea5u tr\u00fac ph\u00e2n t\u00e1n, CDN c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 nhi\u00ean ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS, v\u00ec l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n \u0111\u1ebfn nhi\u1ec1u node kh\u00e1c nhau. Ngo\u00e0i ra, CDN th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web (Web Application Firewall) \u0111\u1ec3 b\u1ea3o v\u1ec7 trang web kh\u1ecfi c\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng web ph\u1ed5 bi\u1ebfn nh\u01b0 SQL injection v\u00e0 cross-site scripting. Ch\u1ee9c n\u0103ng t\u0103ng t\u1ed1c HTTPS gi\u00fap trang web cung c\u1ea5p d\u1ecbch v\u1ee5 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t do c\u00e1c thao t\u00e1c m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3.<\/p>\n\n\n\n

Nh\u1eefng c\u1ea3i thi\u1ec7n c\u1ee5 th\u1ec3 m\u00e0 CDN mang l\u1ea1i cho hi\u1ec7u su\u1ea5t trang web v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng:<\/h2>\n\n\n\n

L\u1ee3i \u00edch t\u1eeb vi\u1ec7c tri\u1ec3n khai CDN (Content Delivery Network) l\u00e0 r\u1ea5t r\u00f5 r\u1ec7t v\u00e0 \u0111a d\u1ea1ng, ch\u1ee7 y\u1ebfu th\u1ec3 hi\u1ec7n \u1edf c\u00e1c kh\u00eda c\u1ea1nh c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng sau:<\/p>\n\n\n\n

Gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian t\u1ea3i trang web<\/h3>\n\n\n\n

\u0110\u00e2y l\u00e0 c\u1ea3i ti\u1ebfn tr\u1ef1c quan nh\u1ea5t: B\u1eb1ng c\u00e1ch l\u1ea5y c\u00e1c t\u00e0i nguy\u00ean t\u0129nh t\u1eeb c\u00e1c n\u00fat g\u1ea7n nh\u1ea5t, th\u1eddi gian tr\u1ec5 m\u1ea1ng v\u00e0 th\u1eddi gian ch\u1edd \u0111\u1ee3i \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt. D\u1ef1a tr\u00ean kinh nghi\u1ec7m trong ng\u00e0nh, vi\u1ec7c tri\u1ec3n khai c\u00e1c t\u00e0i nguy\u00ean t\u0129nh tr\u00ean CDN th\u01b0\u1eddng c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m th\u1eddi gian t\u1ea3i trang web t\u1ed5ng th\u1ec3 t\u1eeb 301% \u0111\u1ebfn 501% ho\u1eb7c nhi\u1ec1u h\u01a1n. T\u1ed1c \u0111\u1ed9 t\u1ea3i trang nhanh h\u01a1n tr\u1ef1c ti\u1ebfp \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u v\u1ec1 t\u00ednh t\u1ee9c th\u00ec c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

N\u00e2ng cao t\u00ednh s\u1eb5n s\u00e0ng s\u1eed d\u1ee5ng v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a n\u1ed9i dung<\/h3>\n\n\n\n

C\u1ea5u tr\u00fac ph\u00e2n t\u00e1n c\u1ee7a CDN (Content Delivery Network) \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 \u0111i\u1ec3m l\u1ed7i \u0111\u01a1n l\u1ebb. Ngay c\u1ea3 khi m\u1ed9t node bi\u00ean hay m\u1ea1ng khu v\u1ef1c g\u1eb7p s\u1ef1 c\u1ed1, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ph\u1ed1i th\u00f4ng minh c\u00f3 th\u1ec3 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng sang c\u00e1c node kh\u00e1c \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, gi\u00fap duy tr\u00ec t\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5 trang web. \u0110i\u1ec1u n\u00e0y c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c l\u0129nh v\u1ef1c kinh doanh then ch\u1ed1t nh\u01b0 th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, t\u00e0i ch\u00ednh, truy\u1ec1n th\u00f4ng, v.v.<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a tr\u1ea3i nghi\u1ec7m s\u1eed d\u1ee5ng tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 tr\u1ea3i nghi\u1ec7m truy c\u1eadp xuy\u00ean khu v\u1ef1c.<\/h3>\n\n\n\n

\u0110\u1ed1i v\u1edbi nh\u1eefng trang web c\u00f3 ng\u01b0\u1eddi d\u00f9ng tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi ho\u1eb7c trong n\u01b0\u1edbc, c\u00f4ng ngh\u1ec7 CDN (Content Delivery Network \u2013 M\u1ea1ng Ph\u00e2n ph\u1ed1i N\u1ed9i dung) \u0111\u00f3ng vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng. CDN \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng \u1edf c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau \u0111\u1ec1u c\u00f3 tr\u1ea3i nghi\u1ec7m truy c\u1eadp nhanh ch\u00f3ng v\u00e0 \u1ed5n \u0111\u1ecbnh, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf nh\u1eefng khu v\u1ef1c xa x\u00f4i ho\u1eb7c khi truy c\u1eadp qua nhi\u1ec1u nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng kh\u00e1c nhau. Ngo\u00e0i ra, vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u00e1c giao th\u1ee9c trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng di \u0111\u1ed9ng nh\u1edd CDN c\u0169ng gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 truy c\u1eadp cho ng\u01b0\u1eddi d\u00f9ng s<\/p>\n\n\n\n

Gi\u1ea3m b\u1edbt \u00e1p l\u1ef1c l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed b\u0103ng th\u00f4ng<\/h3>\n\n\n\n

C\u00e1c n\u00fat ch\u00e2n tr\u1eddi c\u1ee7a m\u1ea1ng l\u01b0\u1edbi CDN (Content Delivery Network) \u0111\u1ea3m nh\u1eadn ph\u1ea7n l\u1edbn c\u00e1c y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng t\u1ec7p l\u1edbn ti\u00eau t\u1ed1n nhi\u1ec1u b\u0103ng th\u00f4ng nh\u01b0 h\u00ecnh \u1ea3nh v\u00e0 video. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ea3i l\u01b0\u1ee3ng tr\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n, l\u01b0\u1ee3ng b\u0103ng th\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 \u00e1p l\u1ef1c x\u1eed l\u00fd. M\u00e1y ch\u1ee7 ngu\u1ed3n ch\u1ec9 c\u1ea7n x\u1eed l\u00fd m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng nh\u1ecf y\u00eau c\u1ea7u truy xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb ngu\u1ed3n (backhaul requests) v\u00e0 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9ng (dynamic requests), t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea5u h\u00ecnh c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n, \u0111\u1ed3ng th\u1eddi tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng m\u00e1y ch\u1ee7 ng\u1eebng ho\u1ea1t \u0111<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn v\u00e0 c\u1ea5u h\u00ecnh CDN cho trang web c\u1ee7a b\u1ea1n?<\/h2>\n\n\n\n

Vi\u1ec7c ch\u1ecdn l\u1ef1a m\u1ed9t CDN (Content Delivery Network) ph\u00f9 h\u1ee3p v\u00e0 c\u1ea5u h\u00ecnh n\u00f3 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e1t huy t\u1ed1i \u0111a hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3.<\/p>\n\n\n\n

\u0110\u00e1nh gi\u00e1 nhu c\u1ea7u v\u00e0 l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5<\/h3>\n\n\n\n

Tr\u01b0\u1edbc h\u1ebft, c\u1ea7n ph\u00e2n t\u00edch k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a m\u00ecnh: Ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau ch\u1ee7 y\u1ebfu t\u1eadp trung \u1edf nh\u1eefng khu v\u1ef1c n\u00e0o? N\u1ed9i dung trang web ch\u1ee7 y\u1ebfu mang t\u00ednh t\u0129nh (kh\u00f4ng thay \u0111\u1ed5i) hay c\u00f3 t\u00ednh t\u01b0\u01a1ng t\u00e1c (\u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean)? D\u1ef1 ki\u1ebfn m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng v\u00e0 l\u01b0\u1ee3ng y\u00eau c\u1ea7u (request) l\u00e0 bao nhi\u00eau? M\u1ee9c \u0111\u1ed9 \u0111\u00f2i h\u1ecfi v\u1ec1 b\u1ea3o m\u1eadt nh\u01b0 th\u1ebf
\nD\u1ef1a tr\u00ean nhu c\u1ea7u c\u1ee5 th\u1ec3, c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN kh\u00e1c nhau b\u1eb1ng c\u00e1ch xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 sau: ph\u1ea1m vi v\u00e0 m\u1eadt \u0111\u1ed9 ph\u1ee7 s\u00f3ng c\u1ee7a c\u00e1c m\u00e1y ch\u1ee7 (node), ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng, t\u00ednh n\u0103ng h\u1ed7 tr\u1ee3 (nh\u01b0 ph\u00e1t video theo y\u00eau c\u1ea7u\/tr\u1ef1c ti\u1ebfp, kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt), \u0111\u1ed9 d\u1ec5 s\u1eed d\u1ee5ng, d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt, v\u00e0 m\u00f4 h\u00ecnh gi\u00e1 c\u1ea3.<\/p>\n\n\n\n

C\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh c\u1ed1t l\u00f5i v\u00e0 th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t<\/h3>\n\n\n\n

1. \u0110\u1ecba ch\u1ec9 t\u00ean mi\u1ec1n c\u1ea7n k\u1ebft n\u1ed1i: Th\u00eam \u0111\u1ecba ch\u1ec9 t\u00ean mi\u1ec1n mu\u1ed1n \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c v\u00e0o console c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n c\u00e1c thay \u0111\u1ed5i theo h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 c\u1eadp nh\u1eadt th\u00f4ng tin gi\u1ea3i quy\u1ebft DNS (DNS resolution), v\u00e0 \u0111\u1eb7t t\u00ean mi\u1ec1n \u0111\u00f3 th\u00e0nh t\u00ean mi\u1ec1n con (alias) do CDN cung c\u1ea5p.
\n2. C\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 ngu\u1ed3n: H\u00e3y thi\u1ebft l\u1eadp \u0111\u00fang \u0111\u1ecba ch\u1ec9 v\u00e0 c\u1ed5ng c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n. \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u00e1y ch\u1ee7 ngu\u1ed3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy c\u1eadp b\u1edfi c\u00e1c n\u00fat bi\u00ean (edge nodes) th\u00f4ng qua \u0111\u1ecba ch\u1ec9 \u0111\u00f3.
\n3. C\u1ea5u h\u00ecnh chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ec7m: \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng. H\u00e3y thi\u1ebft l\u1eadp th\u1eddi gian h\u1ebft h\u1ea1n \u0111\u1ec7m h\u1ee3p l\u00fd cho c\u00e1c lo\u1ea1i t\u00e0i nguy\u00ean t\u0129nh kh\u00e1c nhau. V\u00ed d\u1ee5, h\u00ecnh \u1ea3nh, t\u1ec7p CSS, v\u00e0 t\u1ec7p JS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u1edbi th\u1eddi gian \u0111\u1ec7m d\u00e0i h\u01a1n (nh\u01b0 30 ng\u00e0y), \u0111\u1ed3ng th\u1eddi c\u1ea7n c\u1ea5u h\u00ecnh s\u1ed1 phi\u00ean b\u1ea3n ho\u1eb7c \u201cd\u1ea5u v\u00e2n tay\u201d (fingerprint) \u0111\u1ec3 bu\u1ed9c tr\u00ecnh duy\u1ec7t c\u1eadp nh\u1eadt ch\u00fang.
\n4. C\u1ea5u h\u00ecnh HTTPS: N\u00ean t\u1ea3i l\u00ean ch\u1ee9ng ch\u1ec9 SSL ho\u1eb7c s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed do CDN cung c\u1ea5p, b\u1eaft bu\u1ed9c k\u00edch ho\u1ea1t ch\u1ebf \u0111\u1ed9 truy c\u1eadp qua HTTPS \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh v\u00e0 h\u1ed7 tr\u1ee3 t\u1ed1t h\u01a1n cho c\u00f4ng c\u1ee5 t\u1ed1i \u01b0u h\u00f3a c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (SEO).
\n5. T\u00ednh n\u0103ng t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng: B\u1ea1n c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t c\u00e1c t\u00ednh n\u0103ng nh\u01b0 n\u00e9n d\u1eef li\u1ec7u th\u00f4ng minh (Gzip\/Brotli), t\u1ed1i \u01b0u h\u00f3a h\u00ecnh \u1ea3nh (chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng WebP), t\u1ea3i d\u1eef li\u1ec7u theo y\u00eau c\u1ea7u (lazy loading), h\u1ed7 tr\u1ee3 giao th\u1ee9c HTTP\/2 ho\u1eb7c HTTP\/3, t\u00f9y theo nhu c\u1ea7u s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t, Ph\u00e2n t\u00edch v\u00e0 T\u1ed1i \u01b0u h\u00f3a Li\u00ean t\u1ee5c<\/h3>\n\n\n\n

Sau khi k\u1ebft n\u1ed1i v\u1edbi CDN (Content Delivery Network), b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t v\u00e0 ph\u00e2n t\u00edch m\u00e0 CDN cung c\u1ea5p \u0111\u1ec3 theo d\u00f5i li\u00ean t\u1ee5c c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 t\u1ef7 l\u1ec7 truy c\u1eadp th\u00e0nh c\u00f4ng (hit rate), b\u0103ng th\u00f4ng, l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u, s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u (requests), t\u1ef7 l\u1ec7 l\u1ed7i (error rate), v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i trung b\u00ecnh (average response time). T\u1ef7 l\u1ec7 truy c\u1eadp th\u1ea5p c\u00f3 th\u1ec3 cho th\u1ea5y r\u1eb1ng chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m (caching strategy) c\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh; n\u1ebfu c\u00f3 \u0111\u1ed9 tr\u1ec5 cao \u1edf m\u1ed9t khu v\u1ef1c c\u1ee5 th\u1ec3, b\u1ea1n n\u00ean ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u00e1c m\u00e1y ch\u1ee7 (nodes) t\u1ea1i khu v\u1ef1c \u0111\u00f3. Vi\u1ec7c li\u00ean t\u1ee5<\/p>\n\n\n\n

T\u00f3m l\u1ea1i<\/h2>\n\n\n\n

CDN (Content Delivery Network) \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t \u201cm\u1ea1ng l\u01b0\u1edbi giao h\u00e0ng\u201d cho n\u1ed9i dung tr\u00ean Internet. B\u1eb1ng c\u00e1ch l\u01b0u tr\u1eef n\u1ed9i dung t\u1ea1m th\u1eddi t\u1ea1i c\u00e1c node (n\u00fat) \u1edf kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, k\u1ebft h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 l\u1eadp l\u1ecbch th\u00f4ng minh v\u00e0 ph\u00e2n b\u1ed5 t\u1ea3i (load balancing), CDN gi\u00fap gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed9 tr\u1ec5 k\u1ebft n\u1ed1i v\u00e0 \u00e1p l\u1ef1c l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n (source server). Nh\u1edd c\u00e1c c\u00f4ng ngh\u1ec7 then ch\u1ed1t nh\u01b0 t\u0103ng t\u1ed1c truy c\u1eadp nh\u1edd vi\u1ec7c l\u01b0u tr\u1eef n\u1ed9i dung, t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n, ki\u1ebfn tr\u00fac ph\u00e2n t\u00e1n v\u00e0 b\u1ea3o m\u1eadt, CDN mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch quan tr\u1ecdng cho c\u00e1c trang web: th\u1eddi gian t\u1ea3i trang \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn \u0111\u00e1ng k\u1ec3, \u0111\u1ed9 tin c\u1eady v\u00e0 kh\u1ea3 d\u1ee5ng \u0111\u01b0\u1ee3c n\u00e2ng cao, tr\u1ea3i nghi\u1ec7m truy c\u1eadp nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n c\u1ea7u, c\u00f9ng v\u1edbi<\/p>\n\n\n\n

Trong b\u1ed1i c\u1ea3nh ng\u00e0y nay, ng\u01b0\u1eddi d\u00f9ng c\u1ef1c k\u1ef3 nh\u1ea1y c\u1ea3m v\u1edbi t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web, v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (search engines) coi t\u1ed1c \u0111\u1ed9 trang web l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c x\u1ebfp h\u1ea1ng, vi\u1ec7c tri\u1ec3n khai CDN (Content Delivery Network) cho trang web \u0111\u00e3 chuy\u1ec3n t\u1eeb m\u1ed9t bi\u1ec7n ph\u00e1p t\u1ed1i \u01b0u h\u00f3a th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng. Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CDN v\u00e0 c\u1ea5u h\u00ecnh n\u00f3 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c l\u00e0 b\u01b0\u1edbc then ch\u1ed1t gi\u00fap m\u1ecdi nh\u00e0 ph\u00e1t tri\u1ec3n web, nh\u00e2n vi\u00ean v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng v\u00e0 nh\u00e0 quy\u1ebft \u0111\u1ecbnh kinh doanh n\u00e2ng cao s\u1ee9c c<\/p>\n\n\n\n

FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n

Li\u1ec7u vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 CDN (Content Delivery Network) \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web c\u00f3 \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn ch\u1ec9 s\u1ed1 SEO (Search Engine Optimization) kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng, vi\u1ec7c s\u1eed d\u1ee5ng CDN m\u1ed9t c\u00e1ch \u0111\u00fang \u0111\u1eafn th\u01b0\u1eddng s\u1ebd c\u00f3 t\u00e1c \u0111\u1ed9ng t\u00edch c\u1ef1c \u0111\u1ebfn SEO. C\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm nh\u01b0 Google \u0111\u00e3 nhi\u1ec1u l\u1ea7n kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng t\u1ed1c \u0111\u1ed9 trang web l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c x\u1ebfp h\u1ea1ng. CDN gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang, gi\u1ea3m t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng r\u1eddi trang ngay sau khi truy c\u1eadp, v\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng; nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec1u c\u00f3 l\u1ee3i cho vi\u1ec7c n\u00e2ng cao th\u1ee9 h\u1ea1ng<\/p>\n\n\n\n

\u0110\u1ed3ng th\u1eddi, t\u00ednh kh\u1ea3 d\u1ee5ng cao c\u1ee7a CDN \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm (search engine crawlers) c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0 l\u1ea5y n\u1ed9i dung trang web m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng c\u1ea5u h\u00ecnh CDN ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u00fang c\u00e1ch \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o trang web ho\u1eb7c thu th\u1eadp \u0111\u01b0\u1ee3c n\u1ed9i dung sai l\u1ec7ch do c\u1ea5u h\u00ecnh<\/p>\n\n\n\n

CDN c\u00f3 th\u1ec3 t\u0103ng t\u1ed1c n\u1ed9i dung website \u0111\u1ed9ng kh\u00f4ng?<\/h3>\n\n\n\n

C\u00f3 th\u1ec3. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network) hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng cung c\u1ea5p t\u00ednh n\u0103ng t\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng. Thay v\u00ec l\u01b0u tr\u1eef k\u1ebft qu\u1ea3 \u0111\u1ed9ng, h\u1ecd t\u0103ng t\u1ed1c b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 ngu\u1ed3n. V\u00ed d\u1ee5, h\u1ecd s\u1eed d\u1ee5ng c\u00e1c m\u1ea1ng trung gian ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n, t\u1ed1i \u01b0u h\u00f3a k\u1ebft n\u1ed1i TCP, n\u00e9n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i, nh\u1eb1m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u1ef7 l\u1ec7 m\u1ea5t g\u00f3i d\u1eef li\u1ec7u trong c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed9ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a c\u00e1c giao di\u1ec7n API, trang \u0111\u0103ng nh\u1eadp, v\u00e0 c\u00e1c t\u00ednh n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ed9ng kh\u00e1c.<\/p>\n\n\n\n

Sau khi s\u1eed d\u1ee5ng CDN (Content Delivery Network), \u0111\u1ecba ch\u1ec9 IP th\u1ef1c s\u1ef1 c\u1ee7a trang web c\u00f3 b\u1ecb \u1ea9n \u0111i kh\u00f4ng?<\/h3>\n\n\n\n

\u0110\u00fang v\u1eady, \u0111\u00e2y l\u00e0 m\u1ed9t l\u1ee3i \u00edch b\u1ea3o m\u1eadt b\u1ed5 sung m\u00e0 CDN mang l\u1ea1i. Khi m\u1ed9t trang web \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi CDN, ng\u01b0\u1eddi d\u00f9ng v\u00e0 h\u1ea7u h\u1ebft c\u00e1c truy c\u1eadp vi\u00ean m\u1ea1ng s\u1ebd ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi \u0111\u1ecba ch\u1ec9 IP c\u1ee7a c\u00e1c n\u00fat bi\u00ean (edge nodes) c\u1ee7a CDN, trong khi \u0111\u1ecba ch\u1ec9 IP th\u1ef1c s\u1ef1 c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n \u0111\u01b0\u1ee3c \u1ea9n \u0111i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 b\u00ean trong m\u1ea1ng CDN. \u0110i\u1ec1u n\u00e0y l\u00e0m cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u1ef1c ti\u1ebfp nh\u1eafm v\u00e0o \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n (ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ea5n c\u00f4ng DDoS, qu\u00e9t c\u1ed5ng) tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n, t\u1eeb \u0111\u00f3 n\u00e2ng cao m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n c\u1ee7a trang web \u0111\u00f3.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft li\u1ec7u trang web c\u1ee7a t\u00f4i c\u00f3 th\u1ef1c s\u1ef1 c\u1ea7n CDN hay kh\u00f4ng?<\/h3>\n\n\n\n

N\u1ebfu ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp trang web c\u1ee7a b\u1ea1n \u0111\u1ebfn t\u1eeb c\u00e1c khu v\u1ef1c kh\u00e1c nhau v\u00e0 b\u1ea1n quan t\u00e2m \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u1ee7a h\u1ecd; ho\u1eb7c trang web c\u1ee7a b\u1ea1n ch\u1ee9a nhi\u1ec1u t\u00e0i nguy\u00ean t\u0129nh (nh\u01b0 h\u00ecnh \u1ea3nh, video, t\u00e0i li\u1ec7u \u0111\u1ec3 t\u1ea3i v\u1ec1); ho\u1eb7c m\u00e1y ch\u1ee7 ngu\u1ed3n c\u1ee7a b\u1ea1n c\u00f3 b\u0103ng th\u00f4ng h\u1ea1n ch\u1ebf, th\u01b0\u1eddng xuy\u00ean b\u1ecb qu\u00e1 t\u1ea3i do bi\u1ebfn \u0111\u1ed9ng l\u01b0u l\u01b0\u1ee3ng; ho\u1eb7c b\u1ea1n mu\u1ed1n n\u00e2ng cao kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt c\u1ee7a trang web, th\u00ec vi\u1ec7c tri\u1ec3n khai CDN (Content Delivery Network) s\u1ebd mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

Ngay c\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c trang web nh\u1ecf ho\u1eb7c blog c\u00e1 nh\u00e2n, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 CDN (Content Delivery Network) cung c\u1ea5p dung l\u01b0\u1ee3ng s\u1eed d\u1ee5ng mi\u1ec5n ph\u00ed c\u0169ng c\u00f3 th\u1ec3 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt v\u1edbi chi ph\u00ed th\u1ea5p.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch to\u00e0n di\u1ec7n c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 CDN (Content Delivery Network \u2013 M\u1ea1ng Ph\u00e2n ph\u1ed1i N\u1ed9i dung). CDN ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch l\u01b0u tr\u1eef n\u1ed9i dung t\u1ea1i c\u00e1c node (n\u00fat) \u0111\u01b0\u1ee3c \u0111\u1eb7t r\u1ea3i r\u00e1c tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, sau \u0111\u00f3 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng DNS th\u00f4ng minh \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn node ph\u00f9 h\u1ee3p nh\u1ea5t. Vi\u1ec7c n\u00e0y gi\u00fap r\u00fat ng\u1eafn \u0111\u01b0\u1eddng truy c\u1eadp, gi\u1ea3m b\u1edbt \u00e1p l\u1ef1c l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n (server), v\u00e0 t\u1eeb \u0111\u00f3 n\u00e2ng cao \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 t\u1ea3i tr<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[385,421],"knowledge_category":[278],"class_list":["post-12369606","knowledge_post","type-knowledge_post","status-publish","hentry","tag-cdn-acceleration","tag-website-performance","knowledge_category-cdn"],"acf":{"site_seo_keywords":"CDN\u52a0\u901f\u539f\u7406,\u5185\u5bb9\u5206\u53d1\u7f51\u7edc,\u7f51\u7ad9\u6027\u80fd\u4f18\u5316,\u7528\u6237\u4f53\u9a8c,\u8fb9\u7f18\u8282\u70b9,\u7f13\u5b58\u6280\u672f,\u52a8\u6001\u5185\u5bb9\u52a0\u901f,CDN\u8d1f\u8f7d\u5747\u8861"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12369606","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts"}],"about":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/types\/knowledge_post"}],"author":[{"embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":0,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12369606\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12369606"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12369606"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12369606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}