{"id":12373704,"date":"2026-03-17T07:15:31","date_gmt":"2026-03-16T23:15:31","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/cdn-%e6%8a%80%e6%9c%af%e8%af%a6%e8%a7%a3%ef%bc%9a%e4%bb%8e%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e5%88%b0%e9%80%89%e5%9e%8b%e6%8c%87%e5%8d%97%ef%bc%8c%e5%8a%a0%e9%80%9f%e4%bd%a0%e7%9a%84%e7%bd%91\/"},"modified":"2026-03-17T07:21:25","modified_gmt":"2026-03-16T23:21:25","slug":"cdn-technology-explained-how-it-works-and-choosing-the-right-provider-12373704","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/cdn\/cdn-technology-explained-how-it-works-and-choosing-the-right-provider-12373704\/","title":{"rendered":"Chi ti\u1ebft v\u1ec1 c\u00f4ng ngh\u1ec7 CDN: T\u1eeb nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng \u0111\u1ebfn h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn, t\u0103ng t\u1ed1c tr\u1ea3i nghi\u1ec7m truy c\u1eadp website c\u1ee7a b\u1ea1n"},"content":{"rendered":"

Trong th\u1eddi \u0111\u1ea1i m\u00e0 tr\u1ea3i nghi\u1ec7m k\u1ef9 thu\u1eadt s\u1ed1 ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng, t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng quay l\u1ea1i, t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i v\u00e0 th\u1eadm ch\u00ed l\u00e0 th\u1ee9 h\u1ea1ng tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm. M\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN \u2013 Content Delivery Network) \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng ngh\u1ec7 then ch\u1ed1t \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 tr\u00ec ho\u00e3n truy c\u1eadp tr\u00ean to\u00e0n c\u1ea7u v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a d\u1ecbch v\u1ee5. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, CDN l\u00e0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi, v\u1edbi m\u1ee5c ti\u00eau ch\u00ednh l\u00e0 l\u01b0u tr\u1eef n\u1ed9i dung t\u0129nh v\u00e0 \u0111\u1ed9ng c\u1ee7a trang web ho\u1eb7c \u1ee9ng d\u1ee5ng t\u1ea1i c\u00e1c m\u00e1y ch\u1ee7 \u1edf g\u1ea7n ng\u01b0\u1eddi d\u00f9ng h\u01a1n.<\/p>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng g\u1eedi y\u00eau c\u1ea7u, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ph\u1ed1i th\u00f4ng minh c\u1ee7a CDN s\u1ebd \u0111\u1ecbnh h\u01b0\u1edbng y\u00eau c\u1ea7u \u0111\u00f3 \u0111\u1ebfn n\u00fat c\u1ea1nh (edge node) t\u1ed1i \u01b0u nh\u1ea5t. N\u1ebfu n\u00fat c\u1ea1nh \u0111\u00f3 \u0111\u00e3 l\u01b0u tr\u1eef n\u1ed9i dung c\u1ea7n thi\u1ebft, n\u00f3 s\u1ebd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c m\u1ed9t c\u00e1ch nhanh ch\u00f3ng; n\u1ebfu ch\u01b0a c\u00f3 s\u1eb5n, n\u00fat c\u1ea1nh s\u1ebd l\u1ea5y n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n (source server) v\u00e0 l\u01b0u tr\u1eef l\u1ea1i \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng kh\u00e1c c\u00f3 th\u1ec3 truy c\u1eadp sau n\u00e0y. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean c\u00e1c k\u1ebft n\u1ed1i v\u1eadt l\u00fd v\u00e0 c\u00e1c \u0111i\u1ec3m t\u1eafc ngh\u1ebdn m\u1ea1ng, t\u1eeb \u0111\u00f3 mang l\u1ea1i tr\u1ea3i nghi\u1ec7m t\u0103ng t\u1ed1c ch\u1ec9 trong v\u00e0i miligi\u00e2y.<\/p>\n\n\n\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i c\u1ee7a CDN<\/h2>\n\n\n\n

Vi\u1ec7c v\u1eadn h\u00e0nh CDN kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 qu\u00e1 tr\u00ecnh sao ch\u00e9p d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 n\u00e0y sang m\u00e1y ch\u1ee7 kh\u00e1c, m\u00e0 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p y\u00eau c\u1ea7u s\u1ef1 ph\u1ed1i h\u1ee3p ch\u1eb7t ch\u1ebd gi\u1eefa nhi\u1ec1u th\u00e0nh ph\u1ea7n kh\u00e1c nhau. C\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh bao g\u1ed3m l\u1eadp l\u1ecbch tr\u00ecnh x\u1eed l\u00fd (scheduling), l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1ea1m<\/p>\n

\u0110\u1ecdc th\u00eam T\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 CDN: Nguy\u00ean l\u00fd c\u00f4ng ngh\u1ec7 c\u1ed1t l\u00f5i v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \u0111\u1ec3 t\u0103ng t\u1ed1c ph\u00e2n ph\u1ed1i n\u1ed9i dung trang web<\/a>\u3002<\/p>\n\n\n\n\n

H\u1ec7 th\u1ed1ng \u0111i\u1ec1u ph\u1ed1i th\u00f4ng minh (DNS gi\u1ea3i m\u00e3 v\u00e0 ph\u00e2n b\u1ed5 t\u1ea3i)<\/h3>\n\n\n\n

\u0110\u00e2y ch\u00ednh l\u00e0 \u201ctrung t\u00e2m \u0111i\u1ec1u khi\u1ec3n giao th\u00f4ng\u201d c\u1ee7a h\u1ec7 th\u1ed1ng CDN (Content Delivery Network). Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o m\u1ed9t t\u00ean mi\u1ec1n website \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi CDN, h\u1ec7 th\u1ed1ng DNS \u0111\u1ecba ph\u01b0\u01a1ng s\u1ebd chuy\u1ec3n y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft (resolution request) \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 DNS chuy\u00ean d\u1ee5ng c\u1ee7a CDN. C\u00e1c m\u00e1y ch\u1ee7 n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 thu\u1eadt to\u00e1n ph\u1ee9c t\u1ea1p \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111a chi\u1ec1u c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ecba l\u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng (d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP), t\u1ea3i c\u00f4ng su\u1ea5t c\u1ee7a c\u00e1c node edge (n\u00fat ph\u00e2n ph\u1ed1i n\u1ed9i dung) t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3, t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c node \u0111\u00f3, v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i m\u1ea1ng, t\u1eeb \u0111\u00f3 ch\u1ecdn ra \u0111\u1ecba ch\u1ec9 IP c\u1ee7a node edge ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 tr\u1ea3 v\u1ec1 cho ng\u01b0\u1eddi d\u00f9ng. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong v\u00f2ng v\u00e0i mili gi\u00e2y, v\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng h\u1ec1 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 ch\u1eadm tr\u1ec5 n\u00e0o.<\/p>\n\n

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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

B\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 truy c\u1eadp tr\u00fang \u0111\u00edch t\u1ea1i n\u00fat bi\u00ean<\/h3>\n\n\n\n

N\u00fat bi\u00ean \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 \u201cserver ti\u1ec1n tuy\u1ebfn\u201d tr\u1ef1c ti\u1ebfp ph\u1ee5c v\u1ee5 ng\u01b0\u1eddi d\u00f9ng. N\u00f3 s\u1ebd ki\u1ec3m tra xem li\u1ec7u c\u00e1c t\u00e0i nguy\u00ean m\u00e0 ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u (nh\u01b0 h\u00ecnh \u1ea3nh, CSS, JavaScript, c\u00e1c ph\u1ea7n video, v.v.) c\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m (cache) hay ch\u01b0a. N\u1ebfu t\u00e0i nguy\u00ean c\u00f3 m\u1eb7t v\u00e0 ch\u01b0a h\u1ebft h\u1ea1n s\u1eed d\u1ee5ng, \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ctr\u01b0\u1eddng h\u1ee3p truy c\u1eadp th\u00e0nh c\u00f4ng v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m\u201d (cache hit), v\u00e0 n\u00fat bi\u00ean s\u1ebd ngay l\u1eadp t\u1ee9c tr\u1ea3 v\u1ec1 n\u1ed9i dung \u0111\u00f3 cho ng\u01b0\u1eddi d\u00f9ng \u2013 \u0111\u00e2y l\u00e0 c\u00e1ch truy c\u1eadp nhanh nh\u1ea5t. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu t\u00e0i nguy\u00ean kh\u00f4ng c\u00f3 trong b\u1ed9 nh\u1edb \u0111\u1ec7m ho\u1eb7c \u0111\u00e3 h\u1ebft h\u1ea1n, \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ctr\u01b0\u1eddng h\u1ee3p truy c\u1eadp th\u1ea5t b\u1ea1i v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m\u201d (cache miss), v\u00e0 n\u00fat bi\u00ean s\u1ebd c\u1ea7n th\u1ef1c hi\u1ec7n b\u01b0\u1edbc ti\u1ebfp theo trong quy tr\u00ecnh x\u1eed l\u00fd y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

Tr\u1ea3 v\u1ec1 ngu\u1ed3n v\u00e0 k\u00e9o n\u1ed9i dung<\/h3>\n\n\n\n

Khi kh\u00f4ng t\u00ecm th\u1ea5y n\u1ed9i dung trong b\u1ed9 \u0111\u1ec7m (cache), c\u00e1c n\u00fat bi\u00ean (edge nodes) s\u1ebd thay m\u1eb7t ng\u01b0\u1eddi d\u00f9ng g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn \u201ctrang web g\u1ed1c\u201d (source server), t\u1ee9c l\u00e0 m\u00e1y ch\u1ee7 ban \u0111\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng, \u0111\u1ec3 l\u1ea5y n\u1ed9i dung m\u1edbi nh\u1ea5t. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c n\u1ed9i dung, ch\u00fang v\u1eeba tr\u1ea3 k\u1ebft qu\u1ea3 cho ng\u01b0\u1eddi d\u00f9ng, v\u1eeba l\u01b0u tr\u1eef n\u1ed9i dung \u0111\u00f3 v\u00e0o b\u1ed9 \u0111\u1ec7m theo c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp tr\u01b0\u1edbc (ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00f4ng tin trong header HTTP Cache-Control). L\u1ea7n ti\u1ebfp theo khi ng\u01b0\u1eddi d\u00f9ng kh\u00e1c y\u00eau c\u1ea7u c\u00f9ng m\u1ed9t t\u00e0i nguy\u00ean, h\u1ecd c\u00f3 th\u1ec3 truy c\u1eadp tr\u1ef1c ti\u1ebfp t\u1eeb b\u1ed9 \u0111\u1ec7m, gi\u00fap gi\u1ea3m b\u1edbt \u00e1p l\u1ef1c l\u00ean trang web g\u1ed1c v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n

C\u00e1c l\u1ee3i th\u1ebf c\u00f4ng ngh\u1ec7 ch\u00ednh c\u1ee7a CDN<\/h2>\n\n\n\n

Vi\u1ec7c tri\u1ec3n khai CDN (Content Delivery Network) c\u00f3 th\u1ec3 mang l\u1ea1i nhi\u1ec1u c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 cho doanh nghi\u1ec7p \u1edf nhi\u1ec1u kh\u00eda c\u1ea1nh, v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n n\u1eb1m \u1edf vi\u1ec7c \u201ct\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp n\u1ed9i dung\u201d.<\/p>\n\n\n\n

N\u00e2ng cao \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/h3>\n\n\n\n

\u0110\u00e2y l\u00e0 l\u1ee3i \u00edch tr\u1ef1c ti\u1ebfp nh\u1ea5t c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng CDN (Content Delivery Network). B\u1eb1ng c\u00e1ch ph\u00e2n ph\u1ed1i n\u1ed9i dung \u0111\u1ebfn c\u00e1c \u0111i\u1ec3m g\u1ea7n ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t tr\u00ean m\u1ea1ng, CDN gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 kho\u1ea3ng c\u00e1ch v\u1eadt l\u00fd v\u00e0 s\u1ed1 l\u1ea7n chuy\u1ec3n ti\u1ebfp d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 trong qu\u00e1 tr\u00ecnh truy c\u1eadp trang web. \u0110\u1ed1i v\u1edbi c\u00e1c trang web ho\u1eb7c n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ch\u1ee9a nhi\u1ec1u h\u00ecnh \u1ea3nh v\u00e0 video, ngay c\u1ea3 m\u1ed9t s\u1ef1 c\u1ea3i thi\u1ec7n v\u1ec1 t\u1ed1c \u0111\u1ed9 truy c\u1eadp ch\u1ec9 v\u00e0i tr\u0103m mili gi\u00e2y c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng r\u1eddi trang, \u0111\u1ed3ng th\u1eddi t\u0103ng l\u01b0\u1ee3ng truy<\/p>\n

\u0110\u1ecdc th\u00eam Ph\u00e2n t\u00edch s\u00e2u v\u1ec1 CDN: L\u00e0m th\u1ebf n\u00e0o n\u00f3 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web v\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a>\u3002<\/p>\n\n\n\n\n

Gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ea3i tr\u1ecdng l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n (server ngu\u1ed3n)<\/h3>\n\n\n\n

CDN (Content Delivery Network) \u0111\u1ea3m nh\u1eadn ph\u1ea7n l\u1edbn l\u01b0u l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi n\u1ed9i dung t\u0129nh v\u00e0 n\u1ed9i dung \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m (cache). Th\u00f4ng th\u01b0\u1eddng, CDN c\u00f3 th\u1ec3 l\u1ecdc b\u1ecf h\u01a1n 90% l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server). \u0110i\u1ec1u n\u00e0y gi\u00fap m\u00e1y ch\u1ee7 ngu\u1ed3n t\u1eadp trung ngu\u1ed3n l\u1ef1c t\u00ednh to\u00e1n qu\u00fd gi\u00e1 (nh\u01b0 CPU, b\u1ed9 nh\u1edb, b\u0103ng th\u00f4ng) v\u00e0o vi\u1ec7c x\u1eed l\u00fd c\u00e1c logic kinh doanh c\u1ed1t l\u00f5i v\u00e0 giao ti\u1ebfp v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 h\u1ed7 tr\u1ee3 quy m\u00f4 kinh doanh l\u1edbn h\u01a1n v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n.<\/p>\n\n\n\n

T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng s\u1eb5n s\u00e0ng v\u00e0 ch\u1ed1ng t\u1ea5n c\u00f4ng c\u1ee7a trang web<\/h3>\n\n\n\n

Kh\u1ea3 n\u0103ng s\u1eb5n s\u00e0ng cao (high availability) l\u00e0 m\u1ed9t \u0111\u1eb7c t\u00ednh n\u1ed9i t\u1ea1i c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng CDN (Content Delivery Network). H\u1ec7 th\u1ed1ng l\u1eadp l\u1ecbch th\u00f4ng minh c\u00f3 th\u1ec3 nhanh ch\u00f3ng chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng sang c\u00e1c n\u00fat kh\u00e1c v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng khi m\u1ed9t n\u00fat g\u1eb7p s\u1ef1 c\u1ed1 ho\u1eb7c m\u1ea5t k\u1ebft n\u1ed1i m\u1ea1ng, \u0111\u1ea3m b\u1ea3o d\u1ecbch v\u1ee5 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n. Ngo\u00e0i ra, c\u00e1c nh\u00e0 cung c\u1ea5p CDN quy m\u00f4 l\u1edbn th\u01b0\u1eddng s\u1edf h\u1eefu kh\u1ea3 n\u0103ng m\u1ea1nh m\u1ebd trong vi\u1ec7c \u0111\u1ed1i ph\u00f3 v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb lo\u1ea1i DDoS (Distributed Denial of Service). V\u1edbi l\u01b0\u1ee3ng l\u1edbn n\u00fat v\u00e0 ngu\u1ed3n t\u00e0i nguy\u00ean b\u0103ng th\u00f4ng, h\u1ecd c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 v\u00e0 ph\u00e2n t\u00e1n l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng, t\u1ea1o n\u00ean m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 v\u1eefng ch\u1eafc cho trang web ngu\u1ed3n.<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a t\u00ednh nh\u1ea5t qu\u00e1n trong vi\u1ec7c truy c\u1eadp tr\u00ean to\u00e0n c\u1ea7u<\/h3>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p c\u00f3 ho\u1ea1t \u0111\u1ed9ng kinh doanh tr\u00ean to\u00e0n c\u1ea7u, CDN (Content Delivery Network \u2013 M\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung) l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t qu\u00e1n. D\u00f9 ng\u01b0\u1eddi d\u00f9ng \u1edf \u0111\u00e2u, CDN \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u c\u1ee7a h\u1ecd \u0111\u1ebfn node (n\u00fat trung t\u00e2m x\u1eed l\u00fd) g\u1ea7n nh\u1ea5t ho\u1eb7c ph\u00f9 h\u1ee3p nh\u1ea5t, gi\u00fap tr\u00e1nh t\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn m\u1ea1ng xuy\u00ean qu\u1ed1c gia ho\u1eb7c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng kh\u00e1c nhau, t\u1eeb \u0111\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p CDN (Content Delivery Network) ph\u00f9 h\u1ee3p?<\/h2>\n\n\n\n

Tr\u01b0\u1edbc s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN tr\u00ean th\u1ecb tr\u01b0\u1eddng, vi\u1ec7c \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong qu\u00e1 tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 n\u00ean d\u1ef1a tr\u00ean nh\u1eefng y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i sau:<\/p>\n\n\n\n

Ph\u1ea1m vi bao ph\u1ee7 c\u1ee7a c\u00e1c n\u00fat v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng<\/h3>\n\n\n\n

S\u1ed1 l\u01b0\u1ee3ng c\u00e1c node (n\u00fat m\u1ea1ng) kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ec9 s\u1ed1 duy nh\u1ea5t c\u1ea7n xem x\u00e9t; \u0111i\u1ec1u quan tr\u1ecdng h\u01a1n l\u00e0 \u0111\u1ed9 r\u1ed9ng l\u1edbn v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ef1 ph\u00e2n b\u1ed1 c\u00e1c node \u0111\u00f3. Tr\u01b0\u1edbc h\u1ebft, c\u1ea7n ki\u1ec3m tra xem m\u1ea1ng l\u01b0\u1edbi c\u00f3 ph\u1ee7 s\u00f3ng \u0111\u1ea7y \u0111\u1ee7 t\u1ea1i ba nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u1edbn nh\u1ea5t trong n\u01b0\u1edbc (Viettel, Vinaphone, Mobifone) c\u0169ng nh\u01b0 c\u00e1c khu v\u1ef1c quan tr\u1ecdng \u1edf n\u01b0\u1edbc ngo\u00e0i hay kh\u00f4ng. Ti\u1ebfp theo, c\u1ea7n quan t\u00e2m \u0111\u1ebfn vi\u1ec7c m\u1ea1ng l\u01b0\u1edbi \u0111\u00f3 c\u00f3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1edfi ch\u00ednh nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 hay kh\u00f4ng, c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i \u0111\u1ed1i x\u1ee9ng v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ch\u00ednh kh\u00e1c. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t c\u1ee7a b\u00ean th\u1ee9 ba ho\u1eb7c y\u00eau c\u1ea7u nh\u00e0<\/p>\n\n\n\n

T\u00ednh n\u0103ng v\u00e0 \u0111\u1ed9 ch\u00edn c\u1ee7a s\u1ea3n ph\u1ea9m<\/h3>\n\n\n\n

T\u00ednh n\u0103ng t\u0103ng t\u1ed1c t\u1ea3i file c\u01a1 b\u1ea3n \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n trong c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i; tuy nhi\u00ean, b\u1ea1n c\u1ea7n \u0111\u00e1nh gi\u00e1 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao d\u1ef1a tr\u00ean nhu c\u1ea7u kinh doanh c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh: \n\u2013 H\u1ec7 th\u1ed1ng c\u00f3 h\u1ed7 tr\u1ee3 t\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 kh\u00f4ng? \n\u2013 C\u00f3 cung c\u1ea5p t\u00ednh n\u0103ng chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c giao th\u1ee9c HTTPS, HTTP2, v\u00e0 QUIC ch\u1ec9 v\u1edbi m\u1ed9t c\u00fa nh\u1ea5p chu\u1ed9t kh\u00f4ng? \n\u2013 C\u00e1c gi\u1ea3i ph\u00e1p cho ph\u00e1t tr\u1ef1c ti\u1ebfp video v\u00e0 xem l\u1ea1i video theo y\u00eau c\u1ea7u c\u00f3 \u0111\u1ee7 m\u1ee9c \u0111\u1ed9 ch\u00edn ch\u1eafn v\u00e0 hi\u1ec7u qu\u1ea3 kh\u00f4ng? \n\u2013 C\u00e1c giao di\u1ec7n API v\u00e0 c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd c\u1ea5u h\u00ecnh c\u00f3 d\u1ec5 s\u1eed d\u1ee5ng kh\u00f4ng? \n\u2013 C\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung nh\u01b0 l\u01b0u tr\u1eef \u0111\u1ec7m th\u00f4ng minh, t\u00ednh to\u00e1n t\u1ea1i r\u00eca (edge computing), v\u00e0 b\u1ea3o m\u1eadt c\u00f3<\/p>\n

\u0110\u1ecdc th\u00eam Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt CDN: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u0103ng t\u1ed1c ph\u00e2n ph\u1ed1i n\u1ed9i dung trang web v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a>\u3002<\/p>\n\n\n\n\n

M\u00f4 h\u00ecnh chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf<\/h3>\n\n\n\n

C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng th\u1ee9c t\u00ednh ph\u00ed kh\u00e1c nhau cho CDN, ch\u1ee7 y\u1ebfu bao g\u1ed3m t\u00ednh ph\u00ed theo \u0111\u1ec9nh b\u0103ng th\u00f4ng v\u00e0 t\u00ednh ph\u00ed theo l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp. B\u1ea1n c\u1ea7n d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng cong l\u01b0u l\u01b0\u1ee3ng th\u1ef1c t\u1ebf c\u1ee7a doanh nghi\u1ec7p m\u00ecnh \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh m\u00f4 ph\u1ecfng v\u00e0 l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh ph\u00f9 h\u1ee3p nh\u1ea5t v\u1ec1 m\u1eb7t kinh t\u1ebf. \u0110\u1ed3ng th\u1eddi, h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c chi ti\u1ebft nh\u01b0 c\u01a1 ch\u1ebf gi\u00e1 c\u1ea3 theo t\u1eebng khung, chi ph\u00ed d\u1ecbch v\u1ee5 b\u1ed5 sung, v\u00e0 chi ph\u00ed truy c\u1eadp ngu\u1ed3n d\u1eef li\u1ec7u (backhaul traffic). M\u1ed9t ph\u01b0\u01a1ng th\u1ee9c t\u00ednh ph\u00ed minh b\u1ea1ch c\u00f9ng kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t chi ph\u00ed m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n\n\n\n

Th\u1ecfa thu\u1eadn v\u1ec1 C\u1ea5p \u0111\u1ed9 D\u1ecbch v\u1ee5 v\u00e0 H\u1ed7 tr\u1ee3 K\u1ef9 thu\u1eadt<\/h3>\n\n\n\n

\u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c ho\u1ea1t \u0111\u1ed9ng kinh doanh quan tr\u1ecdng, kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u00e0 y\u1ebfu t\u1ed1 v\u00f4 c\u00f9ng quan tr\u1ecdng. B\u1ea1n c\u1ea7n t\u00ecm hi\u1ec3u v\u1ec1 tr\u00ecnh \u0111\u1ed9 chuy\u00ean m\u00f4n c\u1ee7a \u0111\u1ed9i ng\u0169 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt, t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i (xem h\u1ecd c\u00f3 cung c\u1ea5p d\u1ecbch v\u1ee5 24\/7 hay kh\u00f4ng), v\u00e0 quy tr\u00ecnh gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1. H\u00e3y \u0111\u1ecdc k\u1ef9 Th\u1ecfa thu\u1eadn C\u1ea5p \u0111\u1ed9 D\u1ecbch v\u1ee5 (Service Level Agreement \u2013 SLA) \u0111\u1ec3 n\u1eafm r\u00f5 c\u00e1c \u0111i\u1ec1u kho\u1ea3n li\u00ean quan \u0111\u1ebfn t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a d\u1ecbch v\u1ee5 v\u00e0 kho\u1ea3n b\u1ed3i th\u01b0\u1eddng khi x\u1ea3y ra s\u1ef1 c\u1ed1; \u0111\u00e2y ch\u00ednh l\u00e0 b\u1eb1ng ch\u1ee9ng b\u1eb1ng v\u0103n b\u1ea3n v\u1ec1 ch\u1ea5t<\/p>\n\n\n\n

Nh\u1eefng th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u00e0 c\u00e1c \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd khi c\u1ea5u h\u00ecnh CDN (Content Delivery Network)<\/h2>\n\n\n\n

Sau khi k\u1ebft n\u1ed1i th\u00e0nh c\u00f4ng v\u1edbi CDN (Content Delivery Network), vi\u1ec7c c\u1ea5u h\u00ecnh m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o CDN ph\u00e1t huy \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed1i \u0111a c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

Thi\u1ebft l\u1eadp chi\u1ebfn l\u01b0\u1ee3c h\u1ebft h\u1ea1n b\u1ed9 \u0111\u1ec7m m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd<\/h3>\n\n\n\n

Chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m (cache strategy) l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a CDN (Content Delivery Network). B\u1eb1ng c\u00e1ch c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1c ti\u00eau \u0111\u1ec1 ph\u1ea3n h\u1ed3i HTTP (HTTP response headers), b\u1ea1n c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u, gi\u1ea3m th\u1eddi gian ph\u1ea3n h\u1ed3i v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d Cache-Control<\/code>\u3001Expires<\/code>\u3001ETag<\/code>C\u00e1c h\u00e0nh vi l\u01b0u tr\u1eef \u0111\u1ec7m (cache) cho c\u00e1c ngu\u1ed3n t\u00e0i nguy\u00ean kh\u00e1c nhau \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a th\u00f4ng qua c\u00e1c c\u1ea5u h\u00ecnh t\u01b0\u01a1ng \u1ee9ng. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i nguy\u00ean t\u0129nh \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean theo s\u1ed1 phi\u00ean b\u1ea3n (v\u00ed d\u1ee5: style.v123.css<\/code>C\u00e1c t\u1ec7p tin c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m (cache) trong th\u1eddi gian d\u00e0i (v\u00ed d\u1ee5: m\u1ed9t n\u0103m). \u0110\u1ed1i v\u1edbi c\u00e1c trang HTML th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ho\u1eb7c c\u00e1c ph\u1ea3n h\u1ed3i t\u1eeb API \u0111\u1ed9ng, th\u1eddi gian l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp ng\u1eafn h\u01a1n, ho\u1eb7c kh\u00f4ng l\u01b0u tr\u1eef ch\u00fang trong b\u1ed9 nh\u1edb \u0111\u1ec7m. Ngo\u00e0i ra, b\u1ea1n n\u00ean t\u1eadn d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng nh\u01b0 \u201cb\u1ecf qua chu\u1ed7i truy v\u1ea5n\u201d (<\/p>\n\n\n\n

K\u00edch ho\u1ea1t HTTPS v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh b\u1ea3o m\u1eadt<\/h3>\n\n\n\n

Trong b\u1ed1i c\u1ea3nh hi\u1ec7n nay, vi\u1ec7c s\u1eed d\u1ee5ng giao th\u1ee9c HTTPS cho to\u00e0n b\u1ed9 trang web l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. C\u1ea7n k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 ch\u1ee9ng ch\u1ec9 SSL do CDN cung c\u1ea5p ho\u1eb7c t\u1ea3i l\u00ean ch\u1ee9ng ch\u1ec9 t\u00f9y ch\u1ec9nh, \u0111\u1ed3ng th\u1eddi y\u00eau c\u1ea7u c\u00e1c y\u00eau c\u1ea7u HTTP \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng t\u1ef1 \u0111\u1ed9ng sang HTTPS. Ngo\u00e0i ra, c\u1ea7n c\u1ea5u h\u00ecnh c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt nh\u01b0 WAF (Web Application Firewall), ch\u1ed1ng bot, ch\u1ed1ng vi\u1ec7c sao ch\u00e9p tr\u00e1i ph\u00e9p n\u1ed9i dung (hotlinking) \u0111\u1ec3 b\u1ea3o v\u1ec7 n\u1ed9i dung trang web v\u00e0 gi\u1ea3m l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t hi\u1ec7u su\u1ea5t v\u00e0 ph\u00e2n t\u00edch nh\u1eadt k\u00fd th\u1eddi gian th\u1ef1c<\/h3>\n\n\n\n

Ch\u00fang ta c\u1ea7n thi\u1ebft l\u1eadp m\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t hi\u1ec7u qu\u1ea3. H\u00e3y s\u1eed d\u1ee5ng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n (dashboard) do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN cung c\u1ea5p \u0111\u1ec3 theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u1eddi gian th\u1ef1c, b\u0103ng th\u00f4ng, t\u1ef7 l\u1ec7 truy c\u1eadp th\u00e0nh c\u00f4ng, ph\u00e2n b\u1ed1 m\u00e3 tr\u1ea1ng th\u00e1i (status codes), v.v. \u0110\u1ed3ng th\u1eddi, k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 ghi nh\u1eadt k\u00fd th\u1eddi gian th\u1ef1c (real-time logging) v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u00e1c log t\u1eeb c\u00e1c node edge v\u00e0o h\u1ec7 th\u1ed1ng ph\u00e2n t\u00edch log c\u1ee7a b\u1ea1n (ch\u1eb3ng h\u1ea1n nh\u01b0 ELK Stack) ho\u1eb7c l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y, nh\u1eb1m ph\u00e2n t\u00edch h\u00e0nh vi ng\u01b0\u1eddi d\u00f9ng m\u1ed9t c\u00e1ch s\u00e2u r\u1ed9ng, kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 t\u1ed1i \u01b0u h\u00f3a chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m (cache strategy).<\/p>\n\n\n\n

K\u1ebft n\u1ed1i gi\u1eefa m\u00e1y ch\u1ee7 ngu\u1ed3n (source server) v\u00e0 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh truy xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n (back-to-source optimization)<\/h3>\n\n\n\n

H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server) l\u00e0 ch\u00ednh x\u00e1c, c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn di\u1ec7n v\u00e0 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u truy c\u1eadp ngu\u1ed3n (origin requests) t\u1eeb c\u00e1c n\u00fat CDN (Content Delivery Network). Th\u00f4ng th\u01b0\u1eddng, \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c ti\u00eau \u0111\u1ec1 HTTP \u0111\u1eb7c bi\u1ec7t (HTTP headers). X-Forwarded-For<\/code> Truy\u1ec1n \u0111\u1ea1t \u0111\u1ecba ch\u1ec9 IP th\u1ef1c s\u1ef1 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. T\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng truy\u1ec1n t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server) \u0111\u1ebfn m\u00e1y ch\u1ee7 ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN), v\u00ed d\u1ee5 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng nhi\u1ec1u k\u1ebft n\u1ed1i BGP cho m\u00e1y ch\u1ee7 ngu\u1ed3n ho\u1eb7c \u0111\u1eb7t m\u00e1y ch\u1ee7 ngu\u1ed3n c\u00f9ng ph\u00f2ng m\u00e1y v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN, nh\u1eb1m gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 chi ph\u00ed trong<\/p>\n\n\n\n

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

CDN (Content Delivery Network) \u0111\u00e3 t\u1eeb m\u1ed9t d\u1ecbch v\u1ee5 t\u0103ng t\u1ed1c t\u00f9y ch\u1ecdn ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t ph\u1ea7n c\u01a1 b\u1ea3n kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u00e1c \u1ee9ng d\u1ee5ng tr\u00ean Internet hi\u1ec7n \u0111\u1ea1i. Nh\u1edd v\u00e0o c\u1ea5u tr\u00fac ph\u00e2n t\u00e1n, CDN gi\u00fap gi\u1ea3i quy\u1ebft hi\u1ec7u qu\u1ea3 nhi\u1ec1u v\u1ea5n \u0111\u1ec1 c\u1ed1t l\u00f5i nh\u01b0 \u0111\u1ed9 tr\u1ec5 k\u1ebft n\u1ed1i, \u00e1p l\u1ef1c l\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n, kh\u1ea3 n\u0103ng truy c\u1eadp to\u00e0n c\u1ea7u v\u00e0 b\u1ea3o m\u1eadt d\u1eef li\u1ec7u. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CDN l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 s\u1eed d\u1ee5ng n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3; trong khi vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m kinh doanh c\u1ee7a m\u00ecnh v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c thi\u1ebft l\u1eadp tinh vi l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 ph\u00e1t huy h\u1ebft ti\u1ec1m n\u0103ng c\u1ee7a CDN. Ch\u1ec9 khi \u0111\u01b0a CDN v\u00e0o qu\u00e1 tr\u00ecnh t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng li\u00ean t\u1ee5c, ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i c\u00f9ng m\u1edbi c\u00f3 th\u1ec3 tr\u1ea3i nghi\u1ec7m d\u1ecbch v\u1ee5 s\u1ed1 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi, \u0111\u00e1ng tin c\u1eady v\u00e0 an to\u00e0n.<\/p>\n\n\n\n

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

CDN v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n

CDN (Content Delivery Network) v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y (Cloud Server) l\u00e0 hai lo\u1ea1i d\u1ecbch v\u1ee5 m\u1ea1ng c\u00f3 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng kh\u00e1c nhau. M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft cho vi\u1ec7c t\u00ednh to\u00e1n, l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 v\u1eadn h\u00e0nh \u1ee9ng d\u1ee5ng, \u0111\u00f3ng vai tr\u00f2 nh\u01b0 \u201cb\u1ed9 n\u00e3o v\u00e0 tr\u00e1i tim\u201d c\u1ee7a trang web ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n (t\u1ee9c l\u00e0 m\u00e1y ch\u1ee7 ngu\u1ed3n). Ng\u01b0\u1ee3c l\u1ea1i, CDN l\u00e0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 kh\u00e1c nhau tr\u00ean to\u00e0n th\u1ebf gi\u1edbi; n\u00f3 kh\u00f4ng t\u1ea1o ra n\u1ed9i dung m\u00e0 ch\u1ec9 c\u00f3 nhi\u1ec7m v\u1ee5 ph\u00e2n ph\u1ed1i n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 an to\u00e0n \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng \u1edf kh\u1eafp n\u01a1i. Hai d\u1ecbch v\u1ee5 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi nhau: CDN gi\u00fap gi\u1ea3m b\u1edbt t\u1ea3i cho m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 ph\u00e2n ph\u1ed1i n\u1ed9i dung.<\/p>\n\n\n\n

Sau khi s\u1eed d\u1ee5ng CDN, t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web ch\u1eafc ch\u1eafn s\u1ebd t\u0103ng l\u00ean?<\/h3>\n\n\n\n

Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 r\u1ed9ng r\u00e3i ho\u1eb7c b\u0103ng th\u00f4ng c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n (source server) b\u1ecb h\u1ea1n ch\u1ebf, CDN (Content Delivery Network) s\u1ebd gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web. Tuy nhi\u00ean, m\u1ee9c \u0111\u1ed9 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau, bao g\u1ed3m vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c node CDN c\u00f3 ph\u00f9 h\u1ee3p nh\u1ea5t, c\u1ea5u h\u00ecnh chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m (cache strategy) m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, hi\u1ec7u qu\u1ea3 t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ed1i v\u1edbi n\u1ed9i dung \u0111\u1ed9ng (dynamic content), v\u00e0 t\u00ecnh tr\u1ea1ng m\u1ea1ng gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c node CDN. N\u1ebfu c\u1ea5u h\u00ecnh kh\u00f4ng \u0111\u00fang c\u00e1ch (ch\u1eb3ng h\u1ea1n do chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m sai l\u1ea7m d\u1eabn \u0111\u1ebfn vi\u1ec7c truy c\u1eadp ngu\u1ed3n d\u1eef li\u1ec7u qu\u00e1 nhi\u1ec1u l\u1ea7n), c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 mong \u0111\u1ee3i, th\u1eadm ch\u00ed c\u00f2n g\u00e2y ra s\u1ef1 ch\u1ead<\/p>\n\n\n\n

CDN (Content Delivery Network) ch\u1ee7 y\u1ebfu c\u00f3 th\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp cho nh\u1eefng lo\u1ea1i n\u1ed9i dung sau:<\/h3>\n\n\n\n

CDN (Content Delivery Network) gi\u1ecfi nh\u1ea5t trong vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u00e1c n\u1ed9i dung t\u0129nh, t\u1ee9c l\u00e0 nh\u1eefng t\u1ec7p tin kh\u00f4ng thay \u0111\u1ed5i theo th\u00f4ng tin ng\u01b0\u1eddi d\u00f9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u00ecnh \u1ea3nh, b\u1ea3ng \u0111\u1ecbnh d\u1ea1ng (CSS), t\u1ec7p JavaScript, ph\u00f4ng ch\u1eef, t\u00e0i li\u1ec7u PDF, v\u00e0 t\u1ec7p \u00e2m thanh\/video. Nh\u1edd s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7, c\u00e1c h\u1ec7 th\u1ed1ng CDN hi\u1ec7n \u0111\u1ea1i c\u0169ng c\u00f3 th\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u00e1c n\u1ed9i dung \u0111\u1ed9ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 th\u00f4ng qua c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn (routing), t\u1ed1i \u01b0u h\u00f3a giao th\u1ee9c TCP, v\u00e0 t\u00ednh to\u00e1n t\u1ea1i c\u00e1c \u0111i\u1ec3m g\u1ea7n ng\u01b0\u1eddi d\u00f9ng (edge computing). Nh\u1eefng n\u1ed9i dung \u0111\u1ed9ng n\u00e0y bao g\u1ed3m c\u00e1c trang web \u0111\u01b0\u1ee3c c\u00e1 nh\u00e2n h\u00f3a ho\u1eb7c c\u00e1c ph\u1ea3n h\u1ed3i t\u1eeb c\u00e1c giao di\u1ec7n API (Application Programming Interface).<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u trang web c\u1ee7a t\u00f4i c\u00f3 c\u1ea7n s\u1eed d\u1ee5ng CDN (Content Delivery Network) hay kh\u00f4ng?<\/h3>\n\n\n\n

N\u1ebfu trang web c\u1ee7a b\u1ea1n g\u1eb7p ph\u1ea3i m\u1ed9t trong nh\u1eefng t\u00ecnh hu\u1ed1ng sau, b\u1ea1n n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng CDN (Content Delivery Network): T\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ch\u1eadm, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u1edf xa ho\u1eb7c \u1edf n\u01b0\u1edbc ngo\u00e0i; M\u00e1y ch\u1ee7 ngu\u1ed3n ph\u1ea3i ch\u1ecbu \u00e1p l\u1ef1c l\u1edbn v\u1ec1 b\u0103ng th\u00f4ng, d\u1eabn \u0111\u1ebfn chi ph\u00ed truy c\u1eadp cao; Trang web th\u01b0\u1eddng xuy\u00ean ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi t\u00ecnh tr\u1ea1ng t\u0103ng l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9t ng\u1ed9t ho\u1eb7c b\u1ecb t\u1ea5n c\u00f4ng DDoS; Doanh nghi\u1ec7p c\u00f3 k\u1ebf ho\u1ea1ch m\u1edf r\u1ed9ng ra to\u00e0n c\u1ea7u v\u00e0 c\u1ea7n cung c\u1ea5p tr\u1ea3i nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, nh\u1ea5t qu\u00e1n cho ng\u01b0\u1eddi d\u00f9ng \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c nhau.<\/p>\n\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN) c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1ee9 h\u1ea1ng SEO c\u1ee7a trang web kh\u00f4ng?<\/h3>\n\n\n\n

Vi\u1ec7c c\u1ea5u h\u00ecnh CDN m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c 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, Baidu) coi t\u1ed1c \u0111\u1ed9 t\u1ea3i trang l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c x\u1ebfp h\u1ea1ng trang web. CDN gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 truy c\u1eadp trang web tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, gi\u1ea3m t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng r\u1eddi trang ngay sau khi xem n\u1ed9i dung, t\u0103ng l\u01b0\u1ee3t xem trang, v\u00e0 n\u00e2ng cao \u0111\u1ed9 s\u1eb5n c\u00f3 c\u1ee7a trang web, t\u1eeb \u0111\u00f3 gi\u00e1n ti\u1ebfp th\u00fac \u0111\u1ea9y vi\u1ec7c c\u1ea3i thi\u1ec7n th\u1ee9 h\u1ea1ng tr\u00ean b\u1ea3ng x\u1ebfp h\u1ea1ng SEO. B\u1ea1n c\u1ea7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN c\u00f3 uy t\u00edn v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ee7a trang web (ch\u1eb3ng h\u1ea1n nh\u01b0 n\u1ed9i dung \u0111\u1ed9ng) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm thu th\u1eadp d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00fang c\u00e1ch.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i c\u1ee7a CDN (Content Delivery Network \u2013 M\u1ea1ng Ph\u00e2n ph\u1ed1i N\u1ed9i dung), bao g\u1ed3m c\u00e1c ch\u1ee9c n\u0103ng nh\u01b0 l\u1eadp l\u1ecbch ph\u00e2n ph\u1ed1i th\u00f4ng minh, l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1ea1i c\u00e1c \u0111i\u1ec3m g\u1ea7n ng\u01b0\u1eddi d\u00f9ng (edge caching) v\u00e0 vi\u1ec7c truy xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c (origin pulling). B\u00e0i vi\u1ebft ph\u00e2n t\u00edch chi ti\u1ebft nh\u1eefng \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a CDN trong vi\u1ec7c n\u00e2ng cao t\u1ed1c \u0111\u1ed9 truy c\u1eadp website, gi\u1ea3m b\u1edbt \u00e1p l\u1ef1c l\u00ean m\u00e1y ch\u1ee7 g\u1ed1c, c\u1ea3i thi\u1ec7n t\u00ednh kh\u1ea3 d\u1ee5ng v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ed3ng th\u1eddi, b\u00e0i vi\u1ebft cung c\u1ea5p h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf v\u1ec1 c\u00e1ch l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p CDN ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean y\u1ebfu<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[53,359,712,203,418],"knowledge_category":[278],"class_list":["post-12373704","knowledge_post","type-knowledge_post","status-publish","hentry","tag-cdn","tag-content-delivery-network","tag-tech-guide","tag-website-speed-optimization","tag-network-optimization","knowledge_category-cdn"],"acf":{"site_seo_keywords":"CDN\u6280\u672f,\u5185\u5bb9\u5206\u53d1\u7f51\u7edc,\u7f51\u7ad9\u52a0\u901f,CDN\u5de5\u4f5c\u539f\u7406,CDN\u9009\u578b\u6307\u5357,\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58,\u51cf\u8f7b\u6e90\u7ad9\u8d1f\u8f7d,\u5168\u7403\u8bbf\u95ee\u4f18\u5316"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12373704","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\/12373704\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12373704"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12373704"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12373704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}