{"id":12378863,"date":"2026-03-20T04:14:31","date_gmt":"2026-03-19T20:14:31","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e7%90%86%e8%a7%a3-cdn%ef%bc%9a%e5%8a%a0%e9%80%9f%e5%8e%9f%e7%90%86%e3%80%81%e6%a0%b8%e5%bf%83%e4%bc%98%e5%8a%bf%e4%b8%8e%e5%ae%9e%e6%88%98%e9%83%a8%e7%bd%b2\/"},"modified":"2026-03-20T04:22:17","modified_gmt":"2026-03-19T20:22:17","slug":"understanding-cdn-acceleration-principles-core-advantages-deployment-guide","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/cdn\/understanding-cdn-acceleration-principles-core-advantages-deployment-guide\/","title":{"rendered":"Hi\u1ec3u CDN t\u1eeb \u0111\u1ea7u: H\u01b0\u1edbng d\u1eabn v\u1ec1 nguy\u00ean l\u00fd t\u0103ng t\u1ed1c, l\u1ee3i th\u1ebf c\u1ed1t l\u00f5i v\u00e0 tri\u1ec3n khai th\u1ef1c t\u1ebf"},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi internet, t\u1ed1c \u0111\u1ed9 ch\u00ednh l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t quy\u1ebft \u0111\u1ecbnh tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. D\u00f9 l\u00e0 m\u1ed9t trang web t\u1ea3i ch\u1eadm hay m\u1ed9t bu\u1ed5i ph\u00e1t tr\u1ef1c ti\u1ebfp video b\u1ecb gi\u1eadt lag, \u0111i\u1ec1u \u0111\u00f3 \u0111\u1ec1u c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng r\u1eddi \u0111i ngay l\u1eadp t\u1ee9c. Ch\u00ednh trong b\u1ed1i c\u1ea3nh nh\u01b0 v\u1eady m\u00e0 m\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung (Content Distribution Network \u2013 CDN) ra \u0111\u1eddi, tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng internet hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, CDN (Content Delivery Network) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng g\u1ed3m nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau, v\u1edbi m\u1ee5c ti\u00eau ch\u00ednh l\u00e0 ph\u00e2n ph\u1ed1i n\u1ed9i dung c\u1ee7a trang web ho\u1eb7c \u1ee9ng d\u1ee5ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ebfn n\u01a1i g\u1ea7n ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i c\u00f9ng nh\u1ea5t.<\/p>\n\n\n\n

Ph\u00e2n t\u00edch nguy\u00ean l\u00fd t\u0103ng t\u1ed1c c\u1ee7a CDN<\/h2>\n\n\n\n

S\u1ee9c m\u1ea1nh c\u1ee7a CDN kh\u00f4ng ph\u1ea3i xu\u1ea5t hi\u1ec7n t\u1eeb kh\u00f4ng \u0111\u00e2u; n\u00f3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean m\u1ed9t h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a n\u00f3 l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 nh\u1eadn th\u1ee9c \u0111\u1ea7y \u0111\u1ee7 gi\u00e1 tr\u1ecb th\u1ef1c s\u1ef1 m\u00e0 CDN mang l\u1ea1i.<\/p>\n

\u0110\u1ecdc th\u00eam Ph\u00e2n t\u00edch s\u00e2u v\u1ec1 CDN: T\u1eeb nguy\u00ean l\u00fd \u0111\u1ebfn th\u1ef1c ti\u1ec5n, t\u0103ng t\u1ed1c trang web v\u00e0 ph\u00e2n ph\u1ed1i n\u1ed9i dung c\u1ee7a b\u1ea1n<\/a>\u3002<\/p>\n\n\n\n\n

C\u01a1 ch\u1ebf \u0111\u1ec7m (Cache mechanism): Ch\u00eca kh\u00f3a \u0111\u1ec3 bi\u1ebfn nh\u1eefng th\u1ee9 xa x\u00f4i th\u00e0nh nh\u1eefng th\u1ee9 g\u1ea7n g\u0169i h\u01a1n<\/h3>\n\n\n\n

C\u01a1 b\u1ea3n c\u1ee7a vi\u1ec7c t\u0103ng t\u1ed1c b\u1eb1ng CDN n\u1eb1m \u1edf ch\u1ee9c n\u0103ng \u201cl\u01b0u tr\u1eef \u0111\u1ec7m\u201d (cache). Khi ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u l\u1ea7n \u0111\u1ea7u m\u1ed9t t\u00e0i nguy\u00ean t\u0129nh t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n, h\u1ec7 th\u1ed1ng CDN s\u1ebd ch\u1ecdn \u0111\u01b0\u1eddng truy\u1ec1n t\u1ed1i \u01b0u nh\u1ea5t \u0111\u1ec3 t\u1ea3i t\u00e0i nguy\u00ean \u0111\u00f3 v\u1ec1 c\u00e1c node (n\u00fat) \u1edf kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi v\u00e0 l\u01b0u tr\u1eef n\u00f3 v\u00e0o b\u1ed9 \u0111\u1ec7m.<\/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

Sau \u0111\u00f3, khi nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u1edf c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd g\u1ea7n nhau y\u00eau c\u1ea7u l\u1ea1i c\u00f9ng m\u1ed9t t\u00e0i nguy\u00ean, y\u00eau c\u1ea7u \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng ph\u00e2n b\u1ed5 \u0111\u1ebfn n\u00fat c\u1ea1nh (edge node) c\u1ee7a CDN n\u1eb1m g\u1ea7n h\u1ecd nh\u1ea5t v\u00e0 \u0111\u00e3 l\u01b0u tr\u1eef n\u1ed9i dung \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec7m (cache). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 d\u1eef li\u1ec7u kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c truy\u1ec1n qua \u0111\u1ea1i d\u01b0\u01a1ng, m\u00e0 ch\u1ec9 c\u1ea7n \u0111\u01b0\u1ee3c truy\u1ec1n trong m\u1ea1ng c\u1ee5c b\u1ed9, gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i. Hi\u1ec7u qu\u1ea3 \u0111\u1ec7m \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c n\u1ed9i dung t\u0129nh nh\u01b0 h\u00ecnh \u1ea3nh, b\u1ea3ng \u0111\u1ecbnh d\u1ea1ng (style sheets), script, video\u2026 v\u1ed1n kh\u00f4ng th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i.<\/p>\n\n\n\n

C\u00e2n b\u1eb1ng t\u1ea3i: Tr\u00ed tu\u1ec7 ph\u00e2n t\u00e1n \u00e1p l\u1ef1c<\/h3>\n\n\n\n

M\u1ed9t m\u00e1y ch\u1ee7 \u0111\u01a1n l\u1ebb r\u1ea5t d\u1ec5 b\u1ecb qu\u00e1 t\u1ea3i khi ph\u1ea3i x\u1eed l\u00fd m\u1ed9t l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u \u0111\u1ed3ng th\u1eddi, d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng d\u1ecbch v\u1ee5 b\u1ecb s\u1eadp ho\u1eb7c ph\u1ea3n h\u1ed3i ch\u1eadm. CDN (Content Delivery Network) \u0111\u00e3 gi\u1ea3i quy\u1ebft ho\u00e0n h\u1ea3o v\u1ea5n \u0111\u1ec1 n\u00e0y nh\u1edd v\u00e0o c\u00f4ng ngh\u1ec7 ph\u00e2n b\u1ed5 t\u1ea3i (load balancing) c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

Trung t\u00e2m ph\u00e2n b\u1ed5 t\u1ea3i to\u00e0n c\u1ea7u (CDN) li\u00ean t\u1ee5c theo d\u00f5i t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe, m\u1ee9c \u0111\u1ed9 t\u1ea3i, t\u00ecnh tr\u1ea1ng t\u1eafc ngh\u1ebdn m\u1ea1ng v\u00e0 kho\u1ea3ng c\u00e1ch \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c n\u00fat bi\u00ean (edge nodes). Khi m\u1ed9t y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c g\u1eedi \u0111i, h\u1ec7 th\u1ed1ng GSLB (Global Load Balancing) s\u1ebd d\u1ef1a tr\u00ean nh\u1eefng d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c ph\u1ee9c t\u1ea1p n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh, \u0111\u1ecbnh h\u01b0\u1edbng y\u00eau c\u1ea7u \u0111\u1ebfn n\u00fat bi\u00ean ph\u00f9 h\u1ee3p nh\u1ea5t c\u00f3 th\u1ec3 cung c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 t\u1ed1t nh\u1ea5t. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap tr\u00e1nh t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i tr\u00ean t\u1eebng n\u00fat ri\u00eang l\u1ebb m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng v\u00e0 \u1ed5n \u0111\u1ecbnh cho to\u00e0n b\u1ed9 d\u1ecbch v\u1ee5 m\u1ea1ng.<\/p>\n\n\n\n

T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp n\u1ed9i dung m\u1ed9t c\u00e1ch linh ho\u1ea1t: Kh\u00f4ng ch\u1ec9 d\u00e0nh cho n\u1ed9i dung t\u0129nh<\/h3>\n\n\n\n

Trong quan ni\u1ec7m truy\u1ec1n th\u1ed1ng, CDN (Content Delivery Network) ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u00e1c n\u1ed9i dung t\u0129nh. Tuy nhi\u00ean, c\u00f4ng ngh\u1ec7 CDN hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng sang l\u0129nh v\u1ef1c t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u00e1c n\u1ed9i dung \u0111\u1ed9ng. N\u1ed9i dung \u0111\u1ed9ng l\u00e0 nh\u1eefng n\u1ed9i dung \u0111\u01b0\u1ee3c t\u1ea1o ra theo y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng trong th\u1eddi gian th\u1ef1c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c trang web \u0111\u01b0\u1ee3c c\u00e1 nh\u00e2n h\u00f3a, d\u1eef li\u1ec7u t\u1eeb c\u00e1c giao di\u1ec7n API, th\u00f4ng tin giao d\u1ecbch theo th\u1eddi gian th\u1ef1c, v.v.<\/p>\n

\u0110\u1ecdc th\u00eam Chi ti\u1ebft k\u1ef9 thu\u1eadt CDN: T\u1eeb nguy\u00ean l\u00fd \u0111\u1ebfn th\u1ef1c ti\u1ec5n, t\u0103ng t\u1ed1c website v\u00e0 \u1ee9ng d\u1ee5ng m\u1ea1ng c\u1ee7a b\u1ea1n<\/a>\u3002<\/p>\n\n\n\n\n

T\u00ednh n\u0103ng t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n tr\u00ean m\u1ea1ng. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network) s\u1eed d\u1ee5ng m\u1ea1ng l\u01b0\u1edbi c\u1ed1t l\u00f5i, c\u00e1c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp ri\u00eang t\u01b0 (private links) ho\u1eb7c c\u00f4ng ngh\u1ec7 \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh \u0111\u1ec3 thi\u1ebft l\u1eadp nh\u1eefng k\u00eanh truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 \u1ed5n \u0111\u1ecbnh h\u01a1n gi\u1eefa m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 c\u00e1c n\u00fat tr\u00ean m\u1ea1ng, c\u0169ng nh\u01b0 gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c n\u00fat \u0111\u00f3. Nh\u1edd c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 t\u1ed1i \u01b0u h\u00f3a giao th\u1ee9c TCP, k\u1ebft h\u1ee3p c\u00e1c y\u00eau c\u1ea7u truy c\u1eadp (request merging), v\u00e0 t\u1ea1o s\u1ef1 d\u1ef1 ph\u00f2ng cho c\u00e1c li\u00ean k\u1ebft m\u1ea1ng (link redundancy), c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t trong t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u (network jitter) v\u00e0 m\u1ea5t g\u00f3i d\u1eef li\u1ec7u (packet loss) \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt. Nh\u1edd \u0111\u00f3, ngay c\u1ea3 \u0111\u1ed1i v\u1edbi nh\u1eefng d<\/p>\n\n\n\n

L\u1ee3i th\u1ebf c\u1ed1t l\u00f5i v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a CDN<\/h2>\n\n\n\n

L\u1ee3i \u00edch t\u1eeb vi\u1ec7c tri\u1ec3n khai CDN (Content Delivery Network) l\u00e0 r\u1ea5t \u0111a d\u1ea1ng; n\u00f3 kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp n\u1ed9i dung, m\u00e0 c\u00f2n n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 t\u1ed5ng th\u1ec3 v\u00e0 gi\u00fap t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac chi ph\u00ed.<\/p>\n\n\n\n

N\u00e2ng cao \u0111\u00e1ng k\u1ec3 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 kinh doanh: M\u1ed7i gi\u00e2y tr\u00ec ho\u00e3n trong th\u1eddi gian t\u1ea3i trang web c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 ng\u01b0\u1eddi d\u00f9ng r\u1eddi \u0111i t\u0103ng l\u00ean v\u00e0 t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i gi\u1ea3m xu\u1ed1ng. CDN (Content Delivery Network) gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp tr\u00ean to\u00e0n c\u1ea7u, \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng \u1edf m\u1ecdi n\u01a1i \u0111\u1ec1u nh\u1eadn \u0111\u01b0\u1ee3c tr\u1ea3i nghi\u1ec7m truy c\u1eadp nhanh ch\u00f3ng v\u00e0 nh\u1ea5t qu\u00e1n, t\u1eeb \u0111\u00f3 tr\u1ef1c ti\u1ebfp l\u00e0m t\u0103ng l\u01b0\u1ee3ng truy c\u1eadp trang, th\u1eddi gian ng\u01b0\u1eddi d\u00f9ng \u1edf l\u1ea1i trang web v\u00e0 t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i. \u0110i\u1ec1u n\u00e0y c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, truy\u1ec1n th\u00f4ng, d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn, v.v.<\/p>\n\n\n\n

B\u1ea3o v\u1ec7 an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh cho trang web m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3: CDN t\u1ea1o ra m\u1ed9t r\u00e0o c\u1ea3n b\u1ea3o v\u1ec7 gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 ngu\u1ed3n. C\u1ea5u tr\u00fac ph\u00e2n t\u00e1n c\u1ee7a n\u00f3 t\u1ef1 nhi\u00ean c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 (DDoS) quy m\u00f4 l\u1edbn. Nhi\u1ec1u d\u1ecbch v\u1ee5 CDN c\u00f2n t\u00edch h\u1ee3p nhi\u1ec1u t\u00ednh n\u0103ng b\u1ea3o m\u1eadt nh\u01b0 gi\u1ea3i m\u00e3 SSL\/TLS, t\u01b0\u1eddng l\u1eeda trang web, b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c tr\u00ecnh thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ed9c h\u1ea1i, v\u00e0 ch\u1ed1ng s\u1eeda \u0111\u1ed5i d\u1eef li\u1ec7u, gi\u00fap m\u00e1y ch\u1ee7 ngu\u1ed3n ch\u1ed1ng l\u1ea1i nhi\u1ec1u lo\u1ea1i t\u1ea5n c\u00f4ng m\u1ea1ng kh\u00e1c nhau v\u00e0 b\u1ea3o v\u1ec7 an to\u00e0n cho d\u1eef li\u1ec7u kinh doanh quan tr\u1ecdng.<\/p>\n\n\n\n

Gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed b\u0103ng th\u00f4ng v\u00e0 m\u00e1y ch\u1ee7 c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n: V\u00ec h\u1ea7u h\u1ebft c\u00e1c y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi c\u00e1c n\u00fat c\u1ea1nh (edge nodes), \u00e1p l\u1ef1c v\u1ec1 b\u0103ng th\u00f4ng, t\u1ea3i t\u00ednh to\u00e1n v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i \u0111\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 ngu\u1ed3n s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3m \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c doanh nghi\u1ec7p s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 ngu\u1ed3n c\u00f3 c\u1ea5u h\u00ecnh th\u1ea5p h\u01a1n, ho\u1eb7c ch\u1ecbu \u0111\u1ef1ng l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c l\u1edbn h\u01a1n, t\u1eeb \u0111\u00f3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c nhi\u1ec1u chi ph\u00ed mua m\u00e1y ch\u1ee7 v\u00e0 b\u0103ng th\u00f4ng. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN th\u01b0\u1eddng \u00e1p d\u1ee5ng m\u00f4 h\u00ecnh thanh to\u00e1n theo nhu c\u1ea7u, gi\u00fap chi ph\u00ed tr\u1edf n\u00ean d\u1ec5 ki\u1ec3m so\u00e1t v\u00e0 linh ho\u1ea1t h\u01a1n.<\/p>\n\n\n\n

N\u00e2ng cao kh\u1ea3 n\u0103ng \u0111\u1ed1i ph\u00f3 v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cao: Khi \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u1ed9t ng\u1ed9t nh\u01b0 tin t\u1ee9c m\u1edbi, ra m\u1eaft s\u1ea3n ph\u1ea9m, ch\u01b0\u01a1ng tr\u00ecnh khuy\u1ebfn m\u00e3i trong d\u1ecbp l\u1ec5 h\u1ed9i ho\u1eb7c c\u00e1c \u0111\u1ee3t mua s\u1eafm gi\u1edbi h\u1ea1n th\u1eddi gian, m\u1ea1ng l\u01b0\u1edbi c\u00e1c node edge c\u1ee7a CDN c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng theo nhu c\u1ea7u, h\u1ea5p th\u1ee5 v\u00e0 ph\u00e2n ph\u1ed1i l\u01b0\u1ee3ng l\u1edbn y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh t\u00ecnh tr\u1ea1ng m\u00e1y ch\u1ee7 ngu\u1ed3n b\u1ecb qu\u00e1 t\u1ea3i v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5 c\u0169ng nh\u01b0 uy t<\/p>\n

\u0110\u1ecdc th\u00eam C\u00f4ng ngh\u1ec7 t\u0103ng t\u1ed1c t\u1ea1i c\u00e1c \u0111i\u1ec3m cu\u1ed1i (Edge Acceleration Technology): L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t trang web v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng th\u00f4ng qua t\u00ednh to\u00e1n t\u1ea1i c\u00e1c \u0111i\u1ec3m cu\u1ed1i?<\/a>\u3002<\/p>\n\n\n\n\n

C\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a CDN<\/h2>\n\n\n\n

C\u00e1c \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u1ee7a CDN (Content Delivery Network) \u0111\u00e3 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p ti\u00eau chu\u1ea9n trong nhi\u1ec1u l\u0129nh v\u1ef1c tr\u00ean Internet, t\u1eeb \u0111\u00f3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u00e1ch th\u1ee9c ph\u00e2n ph\u1ed1i n\u1ed9i dung.<\/p>\n\n\n\n

Trang web t\u0129nh v\u00e0 t\u0103ng t\u1ed1c t\u1ea3i c\u00e1c t\u00e0i nguy\u00ean: \u0110\u00e2y l\u00e0 \u1ee9ng d\u1ee5ng ti\u00eau bi\u1ec3u nh\u1ea5t c\u1ee7a CDN (Content Delivery Network). B\u1ea5t k\u1ef3 trang web n\u00e0o ch\u1ee9a nhi\u1ec1u h\u00ecnh \u1ea3nh, CSS, JavaScript, ph\u00f4ng ch\u1eef, ho\u1eb7c t\u00e0i li\u1ec7u c\u1ea7n t\u1ea3i xu\u1ed1ng (nh\u01b0 trang web ch\u00ednh th\u1ee9c c\u1ee7a doanh nghi\u1ec7p, blog, c\u1ed5ng th\u00f4ng tin tin t\u1ee9c, v.v.) \u0111\u1ec1u c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 t\u0103ng t\u1ed1c ngay l\u1eadp t\u1ee9c nh\u1edd s\u1eed d\u1ee5ng CDN.<\/p>\n\n\n\n

Ph\u00e2n ph\u1ed1i video v\u00e0 truy\u1ec1n ph\u00e1t tr\u1ef1c ti\u1ebfp qua c\u00e1c n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn: D\u1ecbch v\u1ee5 xem video theo y\u00eau c\u1ea7u (VOD) v\u00e0 truy\u1ec1n ph\u00e1t tr\u1ef1c ti\u1ebfp (live streaming) \u0111\u00f2i h\u1ecfi m\u1ee9c \u0111\u1ed9 b\u0103ng th\u00f4ng v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p c\u1ef1c k\u1ef3 cao. C\u00f4ng ngh\u1ec7 CDN (Content Delivery Network) cho ph\u00e9p l\u01b0u tr\u1eef c\u00e1c t\u1ec7p video l\u1edbn t\u1ea1i c\u00e1c \u0111i\u1ec3m g\u1ea7n ng\u01b0\u1eddi d\u00f9ng, gi\u00fap vi\u1ec7c ph\u00e1t video di\u1ec5n ra nhanh ch\u00f3ng v\u00e0 m\u01b0\u1ee3t m\u00e0; \u0111\u1ed1i v\u1edbi truy\u1ec1n ph\u00e1t tr\u1ef1c ti\u1ebfp, CDN s\u1eed d\u1ee5ng nhi\u1ec1u node \u0111\u1ec3 ph\u00e2n ph\u1ed1i n\u1ed9i dung, gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian kh\u1edfi \u0111\u1ea7u truy\u1ec1n ph\u00e1t, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 t\u00ednh th\u1eddi gian th\u1ef1c c\u1ee7a lu\u1ed3ng truy\u1ec1n, h\u1ed7 tr\u1ee3 nhi\u1ec1u sc\u00e9nario kh\u00e1c nhau nh\u01b0 c\u00e1c n\u1ec1n t\u1ea3ng video ng\u1eafn, gi\u00e1o d\u1ee5c tr\u1ef1c tuy\u1ebfn, ho\u1eb7c truy\u1ec1n ph<\/p>\n\n\n\n

Ph\u00e2n ph\u1ed1i c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m, tr\u00f2 ch\u01a1i v\u00e0 \u1ee9ng d\u1ee5ng: Vi\u1ec7c n\u00e2ng c\u1ea5p h\u1ec7 \u0111i\u1ec1u h\u00e0nh, c\u1eadp nh\u1eadt phi\u00ean b\u1ea3n cho c\u00e1c \u1ee9ng d\u1ee5ng tr\u00f2 ch\u01a1i l\u1edbn ho\u1eb7c \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi vi\u1ec7c truy\u1ec1n t\u1ea3i nh\u1eefng t\u1ec7p tin c\u00f3 dung l\u01b0\u1ee3ng l\u00ean \u0111\u1ebfn h\u00e0ng tr\u0103m megabyte ho\u1eb7c th\u1eadm ch\u00ed h\u00e0ng gigabyte. CDN (Content Delivery Network \u2013 M\u1ea1ng Ph\u00e2n ph\u1ed1i N\u1ed9i dung) cho ph\u00e9p \u0111\u1ea9y c\u00e1c g\u00f3i c\u1eadp nh\u1eadt \u0111\u1ebfn c\u00e1c \u0111i\u1ec3m truy c\u1eadp tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u1ea3i ch\u00fang v\u1edbi t\u1ed1c \u0111\u1ed9 cao t\u1eeb v\u1ecb tr\u00ed g\u1ea7n nh\u1ea5t, t\u1eeb \u0111\u00f3 r\u00fat ng\u1eafn th\u1eddi gian c\u1eadp nh\u1eadt \u0111\u00e1ng k\u1ec3 v\u00e0 n\u00e2<\/p>\n\n\n\n

API Giao di\u1ec7n v\u00e0 T\u0103ng t\u1ed1c Trang web \u0110\u1ed9ng: K\u00e8m v\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trang \u0111\u01a1n (single-page applications), t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a c\u00e1c giao di\u1ec7n API \u1edf ph\u00eda m\u00e1y ch\u1ee7 (backend) c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng c\u1ee7a \u1ee9ng d\u1ee5ng. C\u00f4ng ngh\u1ec7 t\u0103ng t\u1ed1c \u0111\u1ed9ng c\u1ee7a CDN (Content Delivery Network) c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u00e1c \u0111\u01b0\u1eddng d\u1eabn g\u1ecdi API, \u0111\u1ea3m b\u1ea3o c\u1ea3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n l\u1eabn b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u01b0\u01a1ng t\u00e1c \u0111\u1ed9ng nh\u1ea1y c\u1ea3m nh\u01b0 giao d\u1ecbch th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, d\u1eef li\u1ec7u t\u00e0i ch\u00ednh, th\u00f4ng tin m\u1ea1ng x\u00e3 h\u1ed9i.<\/p>\n\n\n\n

B\u1ea3o v\u1ec7 an ninh v\u00e0 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng: C\u00e1c d\u1ecbch v\u1ee5 CDN \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho m\u1ee5c \u0111\u00edch b\u1ea3o m\u1eadt ho\u1eb7c c\u00e1c m\u00f4-\u0111un b\u1ea3o m\u1eadt t\u00edch h\u1ee3p trong CDN c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 m\u1ea1nh m\u1ebd cho trang web. Ch\u00fang gi\u00fap \u1ea9n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n, l\u1ecdc c\u00e1c l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i, v\u00e0 ch\u1ed1ng l\u1ea1i c\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng nh\u01b0 DDoS, SQL injection, v.v., tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn tri\u1ec3n khai CDN th\u1ef1c t\u1ebf<\/h2>\n\n\n\n

Vi\u1ec7c t\u00edch h\u1ee3p CDN (Content Delivery Network) v\u00e0o doanh nghi\u1ec7p c\u1ee7a b\u1ea1n l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh c\u00f3 h\u1ec7 th\u1ed1ng; tu\u00e2n theo c\u00e1c b\u01b0\u1edbc \u0111\u00fang \u0111\u1eafn s\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o s\u1ef1 chuy\u1ec3n \u0111\u1ed5i di\u1ec5n ra tr\u01a1n tru v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u.<\/p>\n\n\n\n

B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean: Ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network) ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n

Tr\u00ean th\u1ecb tr\u01b0\u1eddng c\u00f3 r\u1ea5t nhi\u1ec1u nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network). Khi l\u1ef1a ch\u1ecdn, b\u1ea1n c\u1ea7n \u0111\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n c\u00e1c y\u1ebfu t\u1ed1 sau: ph\u1ea1m vi v\u00e0 m\u1eadt \u0111\u1ed9 ph\u1ee7 s\u00f3ng to\u00e0n c\u1ea7u c\u1ee7a c\u00e1c node c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi ph\u00e2n b\u1ed1 ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n hay kh\u00f4ng; li\u1ec7u h\u1ecd c\u00f3 cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung m\u00e0 b\u1ea1n c\u1ea7n hay kh\u00f4ng; c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t m\u1ea1ng; m\u00f4 h\u00ecnh v\u00e0 chi ph\u00ed t\u00ednh ph\u00ed; c\u0169ng nh\u01b0 m\u1ee9c \u0111\u1ed9 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt. Vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m th\u1eed v\u00e0 so s\u00e1nh k\u1ef9 l\u01b0\u1ee1ng l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn.<\/p>\n\n\n\n

B\u01b0\u1edbc th\u1ee9 hai: K\u1ebft n\u1ed1i v\u00e0 c\u1ea5u h\u00ecnh t\u00ean mi\u1ec1n<\/h3>\n\n\n\n

Sau khi ch\u1ecdn \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5, b\u1ea1n c\u1ea7n th\u00eam t\u00ean mi\u1ec1n kinh doanh c\u1ee7a m\u00ecnh v\u00e0o console c\u1ee7a h\u1ecd; thao t\u00e1c n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cth\u00eam t\u00ean mi\u1ec1n v\u00e0o h\u1ec7 th\u1ed1ng t\u0103ng t\u1ed1c truy c\u1eadp (acceleration domain)\u201d. Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t \u0111\u1ecba ch\u1ec9 CNAME t\u01b0\u01a1ng \u1ee9ng. Ti\u1ebfp theo, b\u1ea1n c\u1ea7n truy c\u1eadp v\u00e0o nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n ho\u1eb7c n\u1ec1n t\u1ea3ng qu\u1ea3n l\u00fd DNS c\u1ee7a m\u00ecnh, thay \u0111\u1ed5i th\u00f4ng tin t\u00ean mi\u1ec1n (record) hi\u1ec7n \u0111ang tr\u1ecf \u0111\u1ebfn IP c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n th\u00e0nh m\u1ed9t record CNAME, v\u00e0 \u0111\u1eb7t gi\u00e1 tr\u1ecb c\u1ee7a record \u0111\u00f3 l\u00e0 \u0111\u1ecba ch\u1ec9 CNAME do nh\u00e0 cung c\u1ea5p CDN cung c\u1ea5p. Sau khi ho\u00e0n t\u1ea5t b\u01b0\u1edbc n\u00e0y, c\u00e1c y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn m\u1ea1ng CDN.<\/p>\n\n\n\n

B\u01b0\u1edbc th\u1ee9 ba: C\u1ea5u h\u00ecnh quy t\u1eafc l\u01b0u tr\u1eef \u0111\u1ec7m (cache rules) v\u00e0 chi\u1ebfn l\u01b0\u1ee3c truy v\u1ea5n ngu\u1ed3n g\u1ed1c d\u1eef li\u1ec7u (origin-pull strategy)<\/h3>\n\n\n\n

\u0110\u00e2y l\u00e0 kh\u00e2u then ch\u1ed1t trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a v\u00e0 t\u0103ng t\u1ed1c hi\u1ec7u su\u1ea5t trang web. B\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh chi ti\u1ebft nh\u1eefng t\u1ec7p n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 \u0111\u1ec7m (cache) v\u00e0 th\u1eddi gian l\u01b0u tr\u1eef \u0111\u00f3 l\u00e0 bao l\u00e2u. V\u00ed d\u1ee5, h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u1edbi th\u1eddi gian l\u01b0u tr\u1eef d\u00e0i h\u01a1n, trong khi c\u00e1c t\u1ec7p HTML th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u1edbi th\u1eddi gian l\u01b0u tr\u1eef ng\u1eafn h\u01a1n ho\u1eb7c kh\u00f4ng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 \u0111\u1ec7m. \u0110\u1ed3ng th\u1eddi, b\u1ea1n c\u0169ng c\u1ea7n thi\u1ebft l\u1eadp chi\u1ebfn l\u01b0\u1ee3c truy xu\u1ea5t ngu\u1ed3n (origin-pull strategy), t\u1ee9c l\u00e0 khi c\u00e1c n\u00fat trung gian (edge nodes) kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u trong b\u1ed9 \u0111\u1ec7m ho\u1eb7c d\u1eef li\u1ec7u trong b\u1ed9 \u0111\u1ec7m \u0111\u00e3 h\u1ebft h\u1ea1n, c\u00e1ch th\u1ee9c \u0111\u1ec3 truy xu\u1ea5t c\u00e1c t\u00e0i nguy\u00ean t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n c\u1ee7a b\u1ea1n, bao g\u1ed3m giao th\u1ee9c truy xu\u1ea5t, c\u1ed5ng k\u1ebft n\u1ed1i v\u00e0 \u0111\u1ecba ch\u1ec9 m\u00e1<\/p>\n\n\n\n

B\u01b0\u1edbc th\u1ee9 t\u01b0: C\u1ea5u h\u00ecnh b\u1ea3o m\u1eadt v\u00e0 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao<\/h3>\n\n\n\n

Theo y\u00eau c\u1ea7u c\u1ee7a doanh nghi\u1ec7p, h\u00e3y k\u00edch ho\u1ea1t v\u00e0 c\u1ea5u h\u00ecnh t\u0103ng t\u1ed1c b\u1eb1ng giao th\u1ee9c HTTPS, \u0111\u1ed3ng th\u1eddi t\u1ea3i l\u00ean ch\u1ee9ng ch\u1ec9 SSL \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c m\u00e3 h\u00f3a to\u00e0n b\u1ed9 n\u1ed9i dung trang web. Thi\u1ebft l\u1eadp c\u00e1c bi\u1ec7n ph\u00e1p ng\u0103n ch\u1eb7n vi\u1ec7c sao ch\u00e9p tr\u00e1i ph\u00e9p (hotlinking) \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n kh\u1ecfi b\u1ecb c\u00e1c trang web kh\u00e1c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch tr\u00e1i ph\u00e9p. K\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 ghi nh\u1eadt k\u00fd (log service) \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u00e2n t\u00edch l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 sau n\u00e0y. N\u1ebfu c\u1ea7n t\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng ho\u1eb7c th\u1ef1c hi\u1ec7n ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c h\u01a1n, b\u1ea1n c\u0169ng c\u1ea7n c\u1ea5u h\u00ecnh c\u00e1c quy t<\/p>\n\n\n\n

B\u01b0\u1edbc th\u1ee9 n\u0103m: Ki\u1ec3m th\u1eed v\u00e0 gi\u00e1m s\u00e1t qu\u00e1 tr\u00ecnh tri\u1ec3n khai h\u1ec7 th\u1ed1ng tr\u00ean m\u1ea1ng<\/h3>\n\n\n\n

Tr\u01b0\u1edbc khi chuy\u1ec3n \u0111\u1ed5i DNS m\u1ed9t c\u00e1ch ch\u00ednh th\u1ee9c, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m th\u1eed c\u1ee5 th\u1ec3 \u0111\u1ec3 x\u00e1c nh\u1eadn xem CDN c\u00f3 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 hay kh\u00f4ng; v\u00ed d\u1ee5 nh\u01b0 truy c\u1eadp qua c\u00e1c header m\u00e1y ch\u1ee7 nh\u1ea5t \u0111\u1ecbnh ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m th\u1eed tr\u1ef1c tuy\u1ebfn. Sau khi x\u00e1c minh r\u1eb1ng m\u1ecdi th\u1ee9 \u0111\u1ec1u \u1ed5n th\u1ecfa, b\u1ea1n c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh chuy\u1ec3n \u0111\u1ed5i DNS v\u00e0 tri\u1ec3n khai d\u1ecbch v\u1ee5 tr\u00ean m\u1ea1ng. Sau khi d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c tri\u1ec3n khai, h\u00e3y \u0111\u1ea3m b\u1ea3o theo d\u00f5i li\u00ean t\u1ee5c c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 kh\u1ea3 d\u1ee5ng d\u1ecbch v\u1ee5, t\u1ef7 l\u1ec7 truy c\u1eadp v\u00e0o b\u1ed9 \u0111\u1ec7m (cache hit rate), l\u01b0\u1ee3ng b\u0103ng th\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 th\u1eddi gian tr\u1ec5 truy c\u1eadp th\u00f4ng qua console qu\u1ea3n l\u00fd CDN c\u0169ng nh\u01b0 c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t c\u1ee7a b\u00ean th\u1ee9 ba. D\u1ef1a tr\u00ean d\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c, h\u00e3y ti\u1ebfp t\u1ee5c t\u1ed1i \u01b0u h\u00f3a c\u1ea5u h\u00ecnh d<\/p>\n\n\n\n

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

CDN (Content Delivery Network) \u0111\u00e3 ph\u00e1t tri\u1ec3n t\u1eeb m\u1ed9t d\u1ecbch v\u1ee5 n\u00e2ng cao t\u00f9y ch\u1ecdn th\u00e0nh c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng thi\u1ebft y\u1ebfu \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng tr\u1ef1c tuy\u1ebfn nhanh ch\u00f3ng, \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef n\u1ed9i dung \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 r\u1ed9ng r\u00e3i tr\u00ean m\u1ea1ng v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 l\u1eadp l\u1ecbch th\u00f4ng minh, CDN gi\u00fap ph\u00e2n ph\u1ed1i n\u1ed9i dung \u0111\u1ebfn g\u1ea7n ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t, t\u1eeb \u0111\u00f3 gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed9 tr\u1ec5 truy c\u1eadp do kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd v\u00e0 c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 m\u1ea1ng. Gi\u00e1 tr\u1ecb c\u1ee7a CDN \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb vi\u1ec7c c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n cho c\u00e1c d\u1ecbch v\u1ee5, \u0111\u1ebfn vi\u1ec7c gi\u00fap doanh nghi\u1ec7p t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 nh\u00e2n vi\u00ean v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng, vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 CDN l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 s\u1eed d\u1ee5ng n\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Vi\u1ec7c n\u1eafm v\u1eefng to\u00e0n b\u1ed9 quy tr\u00ecnh tri\u1ec3n khai, t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p, c\u1ea5u h\u00ecnh h\u1ec7 th\u1ed1ng cho \u0111\u1ebfn vi\u1ec7c theo d\u00f5i v\u00e0 ki\u1ec3m so\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 chuy\u1ec3n h\u00f3a gi\u00e1 tr\u1ecb c\u1ee7a CDN th\u00e0nh l\u1ee3i th\u1ebf c\u1ea1nh tranh th\u1ef1c s\u1ef1 trong kinh doanh. Trong th\u1eddi \u0111\u1ea1i m\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean h\u00e0ng \u0111\u1ea7u, vi\u1ec7c tri\u1ec3n khai m\u1ed9t h\u1ec7 th\u1ed1ng CDN hi\u1ec7u qu\u1ea3 ch\u00ednh l\u00e0<\/p>\n\n\n\n

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

CDN c\u00f3 ch\u1ec9 t\u0103ng t\u1ed1c n\u1ed9i dung t\u0129nh kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng ph\u1ea3i v\u1eady. C\u00e1c h\u1ec7 th\u1ed1ng CDN (Content Delivery Network) ban \u0111\u1ea7u ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i n\u1ed9i dung t\u0129nh, nh\u01b0ng c\u00f4ng ngh\u1ec7 CDN ng\u00e0y nay \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd v\u00e0 h\u1ed7 tr\u1ee3 t\u1ed1t vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i n\u1ed9i dung \u0111\u1ed9ng. Nh\u1edd c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng d\u1eabn th\u00f4ng minh, t\u1ed1i \u01b0u h\u00f3a giao th\u1ee9c TCP, v\u00e0 c\u00e1c c\u01a1 ch\u1ebf t\u1ed1i \u01b0u h\u00f3a kh\u00e1c, CDN c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i c\u00e1c y\u00eau c\u1ea7u API, vi\u1ec7c t\u1ea3i trang c\u00e1 nh\u00e2n h\u00f3a, c\u0169ng nh\u01b0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ed9ng, gi\u00fap gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u1ef7 l\u1ec7 m\u1ea5t g\u00f3i d\u1eef li\u1ec7u.<\/p>\n\n\n\n

Sau khi s\u1eed d\u1ee5ng CDN (Content Delivery Network), li\u1ec7u m\u00e3 ngu\u1ed3n c\u1ee7a trang web t\u00f4i c\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c thay \u0111\u1ed5i kh\u00f4ng?<\/h3>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng, kh\u00f4ng c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n nhi\u1ec1u thay \u0111\u1ed5i l\u1edbn \u0111\u1ed1i v\u1edbi m\u00e3 ngu\u1ed3n c\u1ed1t l\u00f5i c\u1ee7a trang web. C\u00e1c c\u00f4ng vi\u1ec7c c\u1ea5u h\u00ecnh ch\u00ednh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 gi\u1ea3i quy\u1ebft DNS v\u00e0 tr\u00ean giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network). B\u1ea1n c\u1ea7n ch\u1ec9 \u0111\u1ecbnh c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (DNS records) \u0111\u1ec3 ch\u00fang tr\u1ecf \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 CNAME do nh\u00e0 cung c\u1ea5p CDN cung c\u1ea5p, \u0111\u1ed3ng th\u1eddi c\u1ea5u h\u00ecnh c\u00e1c quy t\u1eafc l\u01b0u tr\u1eef \u0111\u1ec7m (cache rules) v\u00e0 \u0111\u1ecba ch\u1ec9 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c (origin-pull addresses) tr\u00ean giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n c\u1ee7a CDN. \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, \u0111i\u1ec1u c\u1ea7n quan t\u00e2m l\u00e0 \u0111\u01b0\u1eddng d\u1eabn truy c\u1eadp \u0111\u1ebfn c\u00e1c t\u00e0i nguy\u00ean (khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u1eabn t\u01b0\u01a1ng \u0111\u1ed1i ho\u1eb7c \u0111\u01b0\u1eddng d\u1eabn tuy\u1ec7t \u0111\u1ed1i ph\u00f9 h\u1ee3p v\u1edbi t\u00ean mi\u1ec1n CDN) c\u0169ng nh\u01b0 c\u00e1ch x\u1eed l\u00fd c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c c\u1eadp nh\u1eadt phi\u00ean b\u1ea3n do l\u01b0u tr\u1eef \u0111\u1ec7m c\u1ee7a CDN g\u00e2y ra.<\/p>\n\n\n\n

C\u00e1c b\u1ea3n nh\u1edb \u0111\u1ec7m (cache) c\u1ee7a CDN c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng xem ph\u1ea3i n\u1ed9i dung \u0111\u00e3 h\u1ebft h\u1ea1n kh\u00f4ng?<\/h3>\n\n\n\n

N\u1ebfu c\u1ea5u h\u00ecnh kh\u00f4ng \u0111\u00fang c\u00e1ch, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c c\u1ea5u h\u00ecnh c\u00e1c quy t\u1eafc l\u01b0u tr\u1eef \u0111\u1ec7m (cache rules) l\u1ea1i r\u1ea5t quan tr\u1ecdng. B\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp th\u1eddi gian h\u1ebft h\u1ea1n l\u01b0u tr\u1eef \u0111\u1ec7m kh\u00e1c nhau cho c\u00e1c lo\u1ea1i t\u00e0i nguy\u00ean kh\u00e1c nhau. \u0110\u1ed1i v\u1edbi nh\u1eefng t\u00e0i nguy\u00ean th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1eb7t th\u1eddi gian l\u01b0u tr\u1eef \u0111\u1ec7m ng\u1eafn h\u01a1n, ho\u1eb7c s\u1eed d\u1ee5ng t\u00ednh n\u0103ng \u201ckh\u00f3a \u0111\u1ec7m\u201d (cache key) b\u1eb1ng c\u00e1ch th\u00eam tham s\u1ed1 phi\u00ean b\u1ea3n v\u00e0o URL c\u1ee7a t\u00e0i nguy\u00ean \u0111\u1ec3 bu\u1ed9c m\u00e1y kh\u00e1ch t\u1ea3i phi\u00ean b\u1ea3n m\u1edbi. \u0110\u1ed3ng th\u1eddi, c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN (Content Delivery Network) c\u0169ng cung c\u1ea5p t\u00ednh n\u0103ng \u201ct\u00e1i t\u1ea1o \u0111\u1ec7m\u201d (cache refresh), cho ph\u00e9p b\u1ea1n y\u00eau c\u1ea7u CDN x\u00f3a \u0111\u1ec7m c\u1ee7a n\u1ed9i dung c\u1ee5 th\u1ec3, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp ngay v\u00e0o phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t.<\/p>\n\n\n\n

CDN (Content Delivery Network) d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c t\u00ednh ph\u00ed nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n

D\u1ecbch v\u1ee5 CDN ch\u1ee7 y\u1ebfu \u00e1p d\u1ee5ng m\u00f4 h\u00ecnh thanh to\u00e1n theo l\u01b0\u1ee3ng s\u1eed d\u1ee5ng. C\u00e1c y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c t\u00ednh ph\u00ed ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 \u0111\u1ed9 cao c\u1ee7a b\u0103ng th\u00f4ng ho\u1eb7c l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i. N\u1ebfu thanh to\u00e1n theo \u0111\u1ed9 cao c\u1ee7a b\u0103ng th\u00f4ng, gi\u00e1 s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng cao nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong chu k\u1ef3 thanh to\u00e1n; n\u1ebfu thanh to\u00e1n theo l\u01b0\u1ee3ng d\u1eef li\u1ec7u, gi\u00e1 s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean t\u1ed5ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n xu\u1ed1ng. Ngo\u00e0i ra, c\u00f2n c\u00f3 th\u1ec3 ph\u00e1t sinh c\u00e1c chi ph\u00ed kh\u00e1c nh\u01b0 s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u (requests), y\u00eau c\u1ea7u HTTPS, v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 b\u1ed5 sung. Ng\u01b0\u1eddi d\u00f9ng n\u00ean l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c thanh to\u00e1n mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u v\u1ec1 m\u1eb7t chi ph\u00ed d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ee7a doanh nghi\u1ec7p m\u00ecnh.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft li\u1ec7u CDN c\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t hay ch\u01b0a?<\/h3>\n\n\n\n

C\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 ki\u1ec3m tra. Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea7u ti\u00ean l\u00e0 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh; b\u1ea1n ch\u1ec9 c\u1ea7n nh\u1eadp l\u1ec7nh t\u01b0\u01a1ng \u1ee9ng v\u00e0o terminal. nslookup<\/code> \u6216 dig<\/code> L\u1ec7nh n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho d\u1ecbch v\u1ee5 t\u0103ng t\u1ed1c truy c\u1eadp website c\u1ee7a b\u1ea1n. N\u1ebfu k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch cho th\u1ea5y \u0111\u00f3 l\u00e0 t\u00ean mi\u1ec1n do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN cung c\u1ea5p, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch DNS \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00e0nh c\u00f4ng. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c l\u00e0 xem th\u00f4ng tin ti\u00eau \u0111\u1ec1 y\u00eau c\u1ea7u (request headers) tr\u00ean m\u1ea1ng: trong c\u00f4ng c\u1ee5 ph\u00e1t tri\u1ec3n tr\u00ecnh duy\u1ec7t, h\u00e3y ch\u1ecdn m\u1ee5c \u201cM\u1ea1ng\u201d (Network) v\u00e0 t\u00ecm b\u1ea5t k\u1ef3 t\u00e0i nguy\u00ean n\u00e0o \u0111\u01b0\u1ee3c t\u1ea3i th\u00f4ng qua t\u00ean mi\u1ec1n \u0111\u00f3; th\u00f4ng tin ti\u00eau \u0111\u1ec1 ph\u1ea3n h\u1ed3i (response headers) c\u1ee7a t\u00e0i nguy\u00ean \u0111\u00f3 s\u1ebd cho th\u1ea5y qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch DNS \u0111\u00e3 di\u1ec5n ra \u0111\u00fa X-Cache<\/code>\u3001Server<\/code> C\u00e1c tr\u01b0\u1eddng nh\u01b0 v\u1eady s\u1ebd hi\u1ec3n th\u1ecb gi\u00e1 tr\u1ecb t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN, ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cHit from cache\u201d ho\u1eb7c m\u00e3 \u0111\u1ecbnh danh c\u1ee7a m\u00e1y ch\u1ee7 CDN c\u1ee5 th\u1ec3.<\/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\u1ee7a CDN (Content Delivery Network), bao g\u1ed3m c\u00e1c c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1ea1m th\u1eddi (cache), c\u00e2n b\u1eb1ng t\u1ea3i (load balancing) v\u00e0 t\u0103ng t\u1ed1c n\u1ed9i dung m\u1ed9t c\u00e1ch \u0111\u1ed9ng (dynamic acceleration). B\u00e0i vi\u1ebft gi\u1ea3i th\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, b\u1ea3o v\u1ec7 an ninh cho trang web, gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server), v\u00e0 x\u1eed l\u00fd l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn (high concurrency), \u0111\u1ed3ng th\u1eddi li\u1ec7t k\u00ea c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a n\u00f3. \u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eab<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[385,395,435,418,468],"knowledge_category":[278],"class_list":["post-12378863","knowledge_post","type-knowledge_post","status-publish","hentry","tag-cdn-acceleration","tag-content-distribution","tag-caching-techniques","tag-network-optimization","tag-load-balancing","knowledge_category-cdn"],"acf":{"site_seo_keywords":"CDN,\u5185\u5bb9\u5206\u53d1\u7f51\u7edc,\u52a0\u901f\u539f\u7406,\u7f13\u5b58\u673a\u5236,\u8d1f\u8f7d\u5747\u8861,\u52a8\u6001\u52a0\u901f,\u7f51\u7ad9\u6027\u80fd\u4f18\u5316,CDN\u90e8\u7f72\u6307\u5357"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12378863","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\/12378863\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12378863"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12378863"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12378863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}