{"id":12380143,"date":"2026-03-20T23:04:35","date_gmt":"2026-03-20T15:04:35","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e4%bb%80%e4%b9%88%e6%98%af-cdn-%e5%8f%8a%e5%85%b6%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86\/"},"modified":"2026-03-20T23:08:12","modified_gmt":"2026-03-20T15:08:12","slug":"what-is-cdn-and-how-it-works-e7-9f-a5-e8-af-86","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/cdn\/what-is-cdn-and-how-it-works-e7-9f-a5-e8-af-86\/","title":{"rendered":"CDN l\u00e0 g\u00ec v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3"},"content":{"rendered":"

CDN l\u00e0 g\u00ec v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3<\/h2>\n\n\n\n

CDN, hay M\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung, l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng bao g\u1ed3m c\u00e1c m\u00e1y ch\u1ee7 n\u00fat \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 t\u1ea1i nhi\u1ec1u v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd tr\u00ean to\u00e0n c\u1ea7u. M\u1ee5c ti\u00eau c\u1ed1t l\u00f5i c\u1ee7a n\u00f3 l\u00e0 l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m n\u1ed9i dung t\u0129nh v\u00e0 \u0111\u1ed9ng c\u1ee7a trang web ho\u1eb7c \u1ee9ng d\u1ee5ng (nh\u01b0 h\u00ecnh \u1ea3nh, video, b\u1ea3ng \u0111\u1ecbnh ki\u1ec3u, t\u1ec7p JavaScript v\u00e0 ph\u1ea3n h\u1ed3i API) tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 g\u1ea7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i h\u01a1n. Khi ng\u01b0\u1eddi d\u00f9ng g\u1eedi y\u00eau c\u1ea7u, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u \u0111\u1ebfn n\u00fat CDN c\u00f3 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd g\u1ea7n nh\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t, t\u1eeb \u0111\u00f3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ea3i cho m\u00e1y ch\u1ee7 g\u1ed1c (ngu\u1ed3n), gi\u1ea3m \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i c\u0169ng nh\u01b0 t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a n\u1ed9i dung.<\/p>\n\n\n\n

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 tu\u00e2n theo m\u1ed9t s\u1ed1 b\u01b0\u1edbc quan tr\u1ecdng. \u0110\u1ea7u ti\u00ean l\u00e0 l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a n\u1ed9i dung: khi ng\u01b0\u1eddi d\u00f9ng t\u1eeb m\u1ed9t khu v\u1ef1c l\u1ea7n \u0111\u1ea7u ti\u00ean y\u00eau c\u1ea7u m\u1ed9t t\u00e0i nguy\u00ean, CDN s\u1ebd t\u1ea3i t\u00e0i nguy\u00ean \u0111\u00f3 t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ean n\u00fat bi\u00ean c\u1ee7a khu v\u1ef1c \u0111\u00f3. Nh\u1eefng ng\u01b0\u1eddi d\u00f9ng ti\u1ebfp theo trong c\u00f9ng khu v\u1ef1c y\u00eau c\u1ea7u l\u1ea1i t\u00e0i nguy\u00ean t\u01b0\u01a1ng t\u1ef1 c\u00f3 th\u1ec3 l\u1ea5y tr\u1ef1c ti\u1ebfp t\u1eeb n\u00fat bi\u00ean m\u00e0 kh\u00f4ng c\u1ea7n quay v\u1ec1 ngu\u1ed3n. Ti\u1ebfp theo l\u00e0 ph\u00e2n gi\u1ea3i DNS th\u00f4ng minh: khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t t\u00ean mi\u1ec1n trang web \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p CDN, y\u00eau c\u1ea7u ph\u00e2n gi\u1ea3i DNS s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn h\u1ec7 th\u1ed1ng DNS th\u00f4ng minh c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN. H\u1ec7 th\u1ed1ng n\u00e0y s\u1ebd x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd v\u00e0 t\u00ecnh tr\u1ea1ng m\u1ea1ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP c\u1ee7a h\u1ecd, sau \u0111\u00f3 tr\u1ea3 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a n\u00fat bi\u00ean g\u1ea7n ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t v\u00e0 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u nh\u1ea5t. Cu\u1ed1i c\u00f9ng l\u00e0 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u v\u00e0 ph\u00e2n ph\u1ed1i n\u1ed9i dung: tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i \u0111\u1ebfn n\u00fat bi\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u0111\u1ec3 l\u1ea5y t\u00e0i nguy\u00ean \u0111\u00e3 l\u01b0u trong b\u1ed9 nh\u1edb \u0111\u1ec7m. N\u1ebfu n\u00fat bi\u00ean kh\u00f4ng c\u00f3 n\u1ed9i dung \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u (b\u1ed9 nh\u1edb \u0111\u1ec7m kh\u00f4ng tr\u00fang), n\u00fat s\u1ebd t\u1ea3i n\u1ed9i dung t\u1eeb n\u00fat c\u1ea5p cao h\u01a1n ho\u1eb7c tr\u1ef1c ti\u1ebfp t\u1eeb ngu\u1ed3n, l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m r\u1ed3i ph\u00e2n ph\u1ed1i cho ng\u01b0\u1eddi d\u00f9ng v\u00e0 ph\u1ee5c v\u1ee5 cho c\u00e1c y\u00eau c\u1ea7u sau n\u00e0y.<\/p>\n\n\n\n

C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN th\u01b0\u1eddng x\u00e2y d\u1ef1ng m\u1ed9t c\u1ea5u tr\u00fac m\u1ea1ng ph\u00e2n t\u1ea7ng, bao g\u1ed3m c\u00e1c n\u00fat bi\u00ean, n\u00fat trung t\u00e2m khu v\u1ef1c v\u00e0 n\u00fat l\u00f5i x\u01b0\u01a1ng s\u1ed1ng, th\u00f4ng qua c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng n\u1ed9i b\u1ed9 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u00e0 sao l\u01b0u n\u1ed9i dung nhanh ch\u00f3ng. Ki\u1ebfn tr\u00fac ph\u00e2n t\u00e1n n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng cho kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3.<\/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

Vi\u1ec7c tri\u1ec3n khai CDN c\u00f3 th\u1ec3 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3 cho trang web v\u00e0 ho\u1ea1t \u0111\u1ed9ng tr\u1ef1c tuy\u1ebfn, nh\u1eefng \u01b0u \u0111i\u1ec3m n\u00e0y li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng, chi ph\u00ed v\u1eadn h\u00e0nh v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a doanh nghi\u1ec7p.<\/p>\n\n\n\n

\u0110\u1ea7u ti\u00ean l\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t trang web v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. T\u1ed1c \u0111\u1ed9 l\u00e0 huy\u1ebft m\u1ea1ch c\u1ee7a internet hi\u1ec7n \u0111\u1ea1i. CDN gi\u1ea3m thi\u1ec3u \u0111\u00e1ng k\u1ec3 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n v\u1eadt l\u00fd v\u00e0 s\u1ed1 l\u01b0\u1ee3ng b\u01b0\u1edbc nh\u1ea3y m\u1ea1ng c\u1ea7n thi\u1ebft b\u1eb1ng c\u00e1ch \u0111\u1ea9y n\u1ed9i dung ra bi\u00ean m\u1ea1ng, t\u1eeb \u0111\u00f3 gi\u1ea3m \u0111\u1ed9 tr\u1ec5. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c trang web truy\u1ec1n th\u00f4ng v\u00e0 n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed t\u1ea3i nhi\u1ec1u h\u00ecnh \u1ea3nh, video, vi\u1ec7c r\u00fat ng\u1eafn th\u1eddi gian t\u1ea3i trang tr\u1ef1c ti\u1ebfp l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 tho\u00e1t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u0103ng t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i. Ngay c\u1ea3 v\u1edbi n\u1ed9i dung \u0111\u1ed9ng, CDN c\u0169ng c\u00f3 th\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n ph\u1ed1i th\u00f4ng qua vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a k\u1ebft n\u1ed1i TCP, cung c\u1ea5p \u0111\u1ecbnh tuy\u1ebfn m\u1ea1ng t\u1ed1i \u01b0u h\u01a1n.<\/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

Ti\u1ebfp theo l\u00e0 t\u0103ng c\u01b0\u1eddng t\u00ednh kh\u1ea3 d\u1ee5ng v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a trang web. M\u1ed9t m\u00e1y ch\u1ee7 ngu\u1ed3n duy nh\u1ea5t d\u1ec5 b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng do l\u1ed7i ph\u1ea7n c\u1ee9ng, t\u1eafc ngh\u1ebdn m\u1ea1ng ho\u1eb7c l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn \u0111\u1ed9t bi\u1ebfn (nh\u01b0 s\u1ef1 ki\u1ec7n n\u00f3ng, chi\u1ebfn d\u1ecbch marketing). T\u00ednh ch\u1ea5t ph\u00e2n t\u00e1n c\u1ee7a CDN c\u00f3 ngh\u0129a l\u00e0 ngay c\u1ea3 khi m\u1ed9t ho\u1eb7c m\u1ed9t s\u1ed1 n\u00fat g\u1eb7p s\u1ef1 c\u1ed1, l\u01b0u l\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng, li\u1ec1n m\u1ea1ch chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c n\u00fat l\u00e0nh m\u1ea1nh kh\u00e1c, \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5. \u0110\u1ed3ng th\u1eddi, b\u1ea3n th\u00e2n m\u1ea1ng CDN c\u00f3 b\u0103ng th\u00f4ng cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng t\u1ea5n c\u00f4ng l\u01b0u l\u01b0\u1ee3ng m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n

Th\u1ee9 hai l\u00e0 gi\u1ea3m chi ph\u00ed b\u0103ng th\u00f4ng m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 t\u1ea3i m\u00e1y ch\u1ee7. V\u00ec h\u1ea7u h\u1ebft c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi c\u00e1c n\u00fat bi\u00ean, ch\u1ec9 c\u00f3 c\u00e1c y\u00eau c\u1ea7u truy xu\u1ea5t ngu\u1ed3n m\u1edbi ti\u00eau th\u1ee5 b\u0103ng th\u00f4ng v\u00e0 t\u00e0i nguy\u00ean t\u00ednh to\u00e1n c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp gi\u1ea3m chi ph\u00ed \u0111\u1ea7u t\u01b0 v\u00e0o c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 thu\u00ea b\u0103ng th\u00f4ng cho doanh nghi\u1ec7p, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p c\u00f3 quy m\u00f4 l\u01b0u l\u01b0\u1ee3ng l\u1edbn, hi\u1ec7u qu\u1ea3 ti\u1ebft ki\u1ec7m chi ph\u00ed r\u1ea5t r\u00f5 r\u00e0ng.<\/p>\n\n\n\n

Cu\u1ed1i c\u00f9ng l\u00e0 n\u00e2ng cao kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 an ninh. Nhi\u1ec1u nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN t\u00edch h\u1ee3p c\u00e1c d\u1ecbch v\u1ee5 b\u1ea3o m\u1eadt nh\u01b0 t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web, gi\u1ea3m thi\u1ec3u DDoS. Ch\u00fang c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n v\u00e0 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i (nh\u01b0 SQL injection, t\u1ea5n c\u00f4ng cross-site scripting, t\u1ea5n c\u00f4ng CC) t\u1ea1i bi\u00ean m\u1ea1ng, ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y ti\u1ebfp c\u1eadn v\u00e0 ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 g\u1ed1c, cung c\u1ea5p m\u1ed9t l\u1edbp r\u00e0o ch\u1eafn b\u1ea3o m\u1eadt hi\u1ec7u qu\u1ea3 cho m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n

C\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 ch\u1ee9c n\u0103ng c\u00f4ng ngh\u1ec7 ch\u00ednh c\u1ee7a CDN<\/h2>\n\n\n\n

M\u1ed9t d\u1ecbch v\u1ee5 CDN tr\u01b0\u1edfng th\u00e0nh kh\u00f4ng ch\u1ec9 cung c\u1ea5p b\u1ed9 nh\u1edb \u0111\u1ec7m \u0111\u01a1n gi\u1ea3n, m\u00e0 c\u00f2n bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c ch\u1ee9c n\u0103ng c\u00f4ng ngh\u1ec7 ph\u1ee9c t\u1ea1p v\u00e0 tinh vi \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c nhu c\u1ea7u kinh doanh \u0111a d\u1ea1ng.<\/p>\n\n\n\n

Chi\u1ebfn l\u01b0\u1ee3c v\u00e0 ki\u1ec3m so\u00e1t b\u1ed9 nh\u1edb \u0111\u1ec7m l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c thi\u1ebft l\u1eadp th\u1eddi gian h\u1ebft h\u1ea1n b\u1ed9 nh\u1edb \u0111\u1ec7m, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c th\u1eddi gian l\u01b0u b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a c\u00e1c lo\u1ea1i t\u00e0i nguy\u00ean kh\u00e1c nhau th\u00f4ng qua ti\u00eau \u0111\u1ec1 ph\u1ea3n h\u1ed3i HTTP ho\u1eb7c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n CDN. \u0110\u1ed3ng th\u1eddi, c\u0169ng h\u1ed7 tr\u1ee3 ch\u1ee9c n\u0103ng x\u00f3a b\u1ed9 nh\u1edb \u0111\u1ec7m; khi n\u1ed9i dung tr\u00ean m\u00e1y ch\u1ee7 g\u1ed1c \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt, c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t l\u00e0m m\u1edbi b\u1ed9 nh\u1edb \u0111\u1ec7m t\u1ea1i c\u00e1c n\u00fat bi\u00ean th\u1ee7 c\u00f4ng ho\u1eb7c th\u00f4ng qua API, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c n\u1ed9i dung m\u1edbi nh\u1ea5t ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n\n

C\u00e2n b\u1eb1ng t\u1ea3i th\u00f4ng minh v\u00e0 chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng l\u00e0 s\u1ef1 \u0111\u1ea3m b\u1ea3o cho \u0111\u1ed9 tin c\u1eady c\u1ee7a n\u00f3. CDN c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u00ecnh tr\u1ea1ng t\u1ea3i c\u1ee7a t\u1eebng n\u00fat trong th\u1eddi gian th\u1ef1c. Khi m\u1ed9t n\u00fat b\u1ecb qu\u00e1 t\u1ea3i ho\u1eb7c x\u1ea3y ra s\u1ef1 c\u1ed1, y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng, minh b\u1ea1ch ph\u00e2n ph\u1ed1i \u0111\u1ebfn c\u00e1c n\u00fat t\u1ed1i \u01b0u kh\u00e1c, qu\u00e1 tr\u00ecnh n\u00e0y ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c, \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00ednh kh\u1ea3 d\u1ee5ng cao.<\/p>\n\n\n\n

H\u1ed7 tr\u1ee3 t\u0103ng t\u1ed1c HTTPS\/SSL th\u1ec3 hi\u1ec7n t\u00ednh hi\u1ec7n \u0111\u1ea1i c\u1ee7a n\u00f3. CDN kh\u00f4ng ch\u1ec9 h\u1ed7 tr\u1ee3 truy\u1ec1n t\u1ea3i n\u1ed9i dung \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a HTTPS, m\u00e0 c\u00f2n cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef v\u00e0 d\u1ee1 t\u1ea3i ch\u1ee9ng ch\u1ec9 SSL. C\u00e1c n\u00fat bi\u00ean CDN c\u00f3 th\u1ec3 \u0111\u1ea3m nh\u1eadn vi\u1ec7c b\u1eaft tay SSL v\u00e0 m\u00e3 h\u00f3a\/gi\u1ea3i m\u00e3, t\u00e1ch c\u00e1c t\u00e1c v\u1ee5 t\u00ednh to\u00e1n n\u1eb7ng kh\u1ecfi m\u00e1y ch\u1ee7 g\u1ed1c, t\u1eeb \u0111\u00f3 v\u1eeba \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u1eeba t\u0103ng t\u1ed1c th\u00eam vi\u1ec7c truy c\u1eadp HTTPS.<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a video v\u00e0 truy\u1ec1n ph\u00e1t \u0111a ph\u01b0\u01a1ng ti\u1ec7n l\u00e0 k\u1ecbch b\u1ea3n \u1ee9ng d\u1ee5ng quan tr\u1ecdng c\u1ee7a n\u00f3. \u0110\u1ed1i v\u1edbi video dung l\u01b0\u1ee3ng l\u1edbn, lu\u1ed3ng \u00e2m thanh-h\u00ecnh \u1ea3nh th\u1eddi gian th\u1ef1c v\u00e0 d\u1ecbch v\u1ee5 ph\u00e1t theo y\u00eau c\u1ea7u, CDN cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00f4ng ngh\u1ec7 t\u1ed1i \u01b0u bao g\u1ed3m truy\u1ec1n ph\u00e1t lu\u1ed3ng m\u00e3 h\u00f3a th\u00edch \u1ee9ng, ph\u00e2n \u0111o\u1ea1n video, t\u1ea3i tr\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m xem m\u01b0\u1ee3t m\u00e0, kh\u00f4ng gi\u1eadt lag trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n m\u1ea1ng.<\/p>\n\n\n\n

Cu\u1ed1i c\u00f9ng l\u00e0 d\u1ecbch v\u1ee5 nh\u1eadt k\u00fd th\u1eddi gian th\u1ef1c v\u00e0 ph\u00e2n t\u00edch. Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN th\u01b0\u1eddng cung c\u1ea5p nh\u1eadt k\u00fd truy c\u1eadp chi ti\u1ebft v\u00e0 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00edch d\u1eef li\u1ec7u tr\u1ef1c quan, cho ph\u00e9p nh\u00e2n vi\u00ean v\u1eadn h\u00e0nh v\u00e0 kinh doanh hi\u1ec3u r\u00f5 c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 ngu\u1ed3n l\u01b0u l\u01b0\u1ee3ng, n\u1ed9i dung ph\u1ed5 bi\u1ebfn, ph\u00e2n b\u1ed1 khu v\u1ef1c ng\u01b0\u1eddi d\u00f9ng, t\u1ef7 l\u1ec7 truy c\u1eadp, ti\u00eau th\u1ee5 b\u0103ng th\u00f4ng, cung c\u1ea5p h\u1ed7 tr\u1ee3 d\u1eef li\u1ec7u cho vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch dung l\u01b0\u1ee3ng v\u00e0 quy\u1ebft \u0111\u1ecbnh kinh doanh.<\/p>\n\n\n\n

C\u00e1ch l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai d\u1ecbch v\u1ee5 CDN<\/h2>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN ph\u00f9 h\u1ee3p v\u1edbi ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a m\u00ecnh c\u1ea7n xem x\u00e9t nhi\u1ec1u y\u1ebfu t\u1ed1 v\u00e0 tu\u00e2n theo quy tr\u00ecnh tri\u1ec3n khai khoa h\u1ecdc.<\/p>\n\n\n\n

Trong giai \u0111o\u1ea1n l\u1ef1a ch\u1ecdn, tr\u01b0\u1edbc ti\u00ean c\u1ea7n \u0111\u00e1nh gi\u00e1 ph\u1ea1m vi ph\u1ee7 s\u00f3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c node. S\u1ed1 l\u01b0\u1ee3ng node v\u00e0 ph\u00e2n b\u1ed1 \u0111\u1ecba l\u00fd l\u00e0 c\u01a1 b\u1ea3n, nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng, dung l\u01b0\u1ee3ng b\u0103ng th\u00f4ng c\u1ee7a node v\u00e0 t\u00ecnh tr\u1ea1ng k\u1ebft n\u1ed1i v\u1edbi c\u00e1c nh\u00e0 m\u1ea1ng ch\u00ednh l\u00e0 quan tr\u1ecdng h\u01a1n. C\u1ea7n ki\u1ec3m tra t\u00ecnh h\u00ecnh ph\u1ee7 s\u00f3ng c\u1ee7a h\u1ecd t\u1ea1i khu v\u1ef1c c\u00f3 ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau. Ti\u1ebfp theo l\u00e0 so s\u00e1nh t\u00ednh \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a c\u00e1c ch\u1ee9c n\u0103ng, x\u00e1c nh\u1eadn xem h\u1ecd c\u00f3 h\u1ed7 tr\u1ee3 c\u00e1c ch\u1ee9c n\u0103ng c\u1ea7n thi\u1ebft hay kh\u00f4ng, nh\u01b0 t\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng, video theo y\u00eau c\u1ea7u\/tr\u1ef1c ti\u1ebfp, t\u0103ng t\u1ed1c API, b\u1ed9 c\u00f4ng c\u1ee5 b\u1ea3o m\u1eadt, v.v. H\u01a1n n\u1eefa l\u00e0 ch\u00fa \u00fd \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 gi\u00e1 c\u1ea3, c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 t\u0103ng t\u1ed1c th\u1ef1c t\u1ebf th\u00f4ng qua th\u1eddi gian d\u00f9ng th\u1eed ho\u1eb7c n\u1ec1n t\u1ea3ng \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a b\u00ean th\u1ee9 ba. M\u00f4 h\u00ecnh gi\u00e1 (nh\u01b0 t\u00ednh ph\u00ed theo b\u0103ng th\u00f4ng, theo l\u01b0u l\u01b0\u1ee3ng, theo s\u1ed1 l\u01b0\u1ee3ng y\u00eau c\u1ea7u) c\u0169ng c\u1ea7n ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh l\u01b0u l\u01b0\u1ee3ng c\u1ee7a doanh nghi\u1ec7p. Cu\u1ed1i c\u00f9ng l\u00e0 xem x\u00e9t h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt v\u00e0 th\u1ecfa thu\u1eadn c\u1ea5p \u0111\u1ed9 d\u1ecbch v\u1ee5, ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt, chuy\u00ean m\u00f4n c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 c\u0169ng nh\u01b0 c\u00e1c ti\u00eau chu\u1ea9n cam k\u1ebft v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng v\u00e0 hi\u1ec7u su\u1ea5t trong SLA.<\/p>\n\n\n\n

Trong giai \u0111o\u1ea1n tri\u1ec3n khai, tr\u01b0\u1edbc ti\u00ean c\u1ea7n th\u1ef1c hi\u1ec7n vi\u1ec7c k\u1ebft n\u1ed1i t\u00ean mi\u1ec1n v\u00e0 c\u1ea5u h\u00ecnh CNAME. H\u00e3y ch\u1ecdn nh\u1eefng t\u00ean mi\u1ec1n c\u1ea7n \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c (v\u00ed d\u1ee5:\u2026) static.example.com<\/code>Trong giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n c\u1ee7a CDN (Content Delivery Network), b\u1ea1n c\u1ea7n th\u00eam (th\u00eam th\u00f4ng tin c\u1ea7n thi\u1ebft) v\u00e0o h\u1ec7 th\u1ed1ng. Sau \u0111\u00f3, nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 CDN s\u1ebd ph\u00e2n b\u1ed5 m\u1ed9t t\u00ean mi\u1ec1n lo\u1ea1i CNAME t\u01b0\u01a1ng \u1ee9ng cho b\u1ea1n. Ti\u1ebfp theo, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n thao t\u00e1c c\u1ea5u h\u00ecnh t\u01b0\u01a1ng \u1ee9ng t\u1ea1i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS (Domain Name System) c\u1ee7a m static.example.com<\/code> Th\u00f4ng tin gi\u1ea3i ph\u00e2n (resolution records) tr\u01b0\u1edbc \u0111\u00e2y \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh t\u1eeb record A \u0111\u1ebfn IP c\u1ee7a m\u00e1y ch\u1ee7 ngu\u1ed3n (origin server), gi\u1edd \u0111\u01b0\u1ee3c thay \u0111\u1ed5i th\u00e0nh record CNAME \u0111\u1ec3 tr\u1ecf \u0111\u1ebfn t\u00ean mi\u1ec1n do CDN cung c\u1ea5p. Ti\u1ebfp theo, c\u1ea7n thi\u1ebft l\u1eadp c\u1ea9n th\u1eadn c\u00e1c quy t\u1eafc l\u01b0u tr\u1eef \u0111\u1ec7m (cache rules). H\u00e3y \u0111\u1eb7t th\u1eddi gian l\u01b0u tr\u1eef \u0111\u1ec7m ph\u00f9 h\u1ee3p t\u00f9y theo lo\u1ea1i n\u1ed9i dung d\u1ecbch v\u1ee5: h\u00ecnh \u1ea3nh, t\u1ec7p CSS\/JS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong th\u1eddi gian d\u00e0i (v\u00ed d\u1ee5: 30 ng\u00e0y), trong khi c\u00e1c trang HTML ho\u1eb7c API \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong th\u1eddi gian ng\u1eafn h\u01a1n ho\u1eb7c kh\u00f4ng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m. \u0110\u1ed3ng th\u1eddi, c\u1ea7n c\u1ea5u h\u00ecnh \u0111\u00fang kh\u00f3a l\u01b0u tr\u1eef \u0111\u1ec7m (cache keys) v\u00e0 b\u1ecf qua c\u00e1c tham s\u1ed1 truy v\u1ea5n kh\u00f4ng c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 truy c\u1eadp s\u1eed d\u1ee5ng d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m. Sau \u0111\u00f3, c\u1ea5u h\u00ecnh chi\u1ebfn l\u01b0\u1ee3c truy v\u1ec1 ngu\u1ed3n (origin-pull strategy) v\u00e0 c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt (security rules), bao g\u1ed3m \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 truy v\u1ec1 ngu\u1ed3n, giao th\u1ee9c truy v\u1ec1 ngu\u1ed3n (HTTP\/HTTPS), v\u00e0 chi\u1ebfn l\u01b0\u1ee3c ph\u00e2n ph\u1ed1i t\u1ea3i (load balancing). D\u1ef1a tr\u00ean nhu c\u1ea7u b\u1ea3o m\u1eadt, h\u00e3y thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc WAF, danh s\u00e1ch \u0111en\/tr\u1eafng IP, v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ed1ng vi\u1ec7c sao ch\u00e9p tr\u00e1i ph\u00e9p n\u1ed9i dung (nh\u01b0 ki\u1ec3m tra Referer, x\u00e1c th\u1ef1c b\u1eb1ng Token). Cu\u1ed1i c\u00f9ng, ti\u1ebfn h\u00e0nh ki\u1ec3m th\u1eed v\u00e0 chuy\u1ec3n \u0111\u1ed5i d\u1ecbch v\u1ee5. Sau khi ho\u00e0n t\u1ea5t c\u1ea5u h\u00ecnh, th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m th\u1eed to\u00e0n di\u1ec7n bao g\u1ed3m ki\u1ec3m th\u1eed ch\u1ee9c n\u0103ng, ki\u1ec3m th\u1eed hi\u1ec7u n\u0103ng v\u00e0 ki\u1ec3m th\u1eed kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau s\u1ef1 c\u1ed1. Khi \u0111\u00e3 x\u00e1c nh\u1eadn m\u1ecdi th\u1ee9 \u1ed5n th\u1ecfa, c\u00f3 th\u1ec3 chuy\u1ec3n d\u1ecbch l\u01b0u l\u01b0\u1ee3ng tr\u1ef1c tuy\u1ebfn sang CDN m\u1ed9t c\u00e1ch t\u1eeb t\u1eeb b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh tr\u1ecdng s\u1ed1 gi\u1ea3i ph\u00e2n DNS, v\u00e0 ti\u1ebfp t\u1ee5c theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng.<\/p>\n\n\n\n

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

L\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Internet hi\u1ec7n \u0111\u1ea1i, CDN (Content Delivery Network) \u0111\u00e3 ph\u00e1t tri\u1ec3n t\u1eeb c\u00f4ng c\u1ee5 ban \u0111\u1ea7u ch\u1ec9 d\u00f9ng \u0111\u1ec3 t\u0103ng t\u1ed1c vi\u1ec7c truy c\u1eadp n\u1ed9i dung t\u0129nh th\u00e0nh m\u1ed9t n\u1ec1n t\u1ea3ng d\u1ecbch v\u1ee5 t\u00edch h\u1ee3p nhi\u1ec1u ch\u1ee9c n\u0103ng nh\u01b0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t, ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 b\u1ea3o v\u1ec7 an ninh. Nh\u1edd m\u1ea1ng l\u01b0\u1edbi c\u00e1c node (n\u00fat trung gian) \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 tr\u00ean to\u00e0n c\u1ea7u, c\u00f9ng c\u00e1c c\u00f4ng ngh\u1ec7 \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u (cache), CDN \u0111\u00e3 gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 v\u1ea5n \u0111\u1ec1 \u0111\u1ed9 tr\u1ec5 truy c\u1eadp do kho\u1ea3ng c\u00e1ch \u0111\u1ecba l\u00fd v\u00e0 t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i m\u1ea1ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao \u0111\u00e1ng k\u1ec3 tr\u1ea3i nghi\u1ec7m s\u1ed1 cho ng\u01b0\u1eddi d\u00f9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 doanh nghi\u1ec7p ho\u1eb7c c\u00e1 nh\u00e2n n\u00e0o s\u1edf h\u1eefu ho\u1ea1t \u0111\u1ed9ng kinh doanh tr\u1ef1c tuy\u1ebfn, vi\u1ec7c hi\u1ec3u v\u00e0 t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 CDN kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn m\u00e0 l\u00e0 m\u1ed9t \u0111i\u1ec1u c\u1ea7n thi\u1ebft. D\u00f9 l\u00e0 c\u00f4ng ty kh\u1edfi nghi\u1ec7p hay doanh nghi\u1ec7p l\u1edbn, th\u00f4ng qua vi\u1ec7c l\u1ef1a ch\u1ecdn, c\u1ea5u h\u00ecnh v\u00e0 t\u1ed1i \u01b0u h\u00f3a d\u1ecbch v\u1ee5 CDN m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, \u0111\u1ec1u c\u00f3 th\u1ec3 trong th\u1ecb tr\u01b0\u1eddng c\u1ea1nh tranh kh\u1ed1c li\u1ec7t, cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng c\u1ee7a m\u00ecnh d\u1ecbch v\u1ee5 nhanh h\u01a1n, \u1ed5n \u0111\u1ecbnh h\u01a1n v\u00e0 an to\u00e0n h\u01a1n, t\u1eeb \u0111\u00f3 x\u00e2y d\u1ef1ng n\u00ean r\u00e0o c\u1ea3n c\u1ea1nh tranh v\u1eefng ch\u1eafc.<\/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 v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y l\u00e0 hai s\u1ea3n ph\u1ea9m d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y c\u00f3 c\u00f4ng d\u1ee5ng kh\u00e1c nhau. M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 t\u00ednh to\u00e1n linh ho\u1ea1t, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ed9t m\u00e1y t\u00ednh \u1ea3o t\u1eeb xa, d\u00f9ng \u0111\u1ec3 tri\u1ec3n khai v\u00e0 ch\u1ea1y \u1ee9ng d\u1ee5ng, c\u01a1 s\u1edf d\u1eef li\u1ec7u, v.v., l\u00e0 \u201cngu\u1ed3n g\u1ed1c\u201d v\u00e0 \u201ctrung t\u00e2m x\u1eed l\u00fd\u201d c\u1ee7a n\u1ed9i dung.<\/p>\n\n\n\n

CDN l\u00e0 m\u1ed9t m\u1ea1ng ph\u00e2n ph\u1ed1i n\u1ed9i dung, b\u1ea3n th\u00e2n n\u00f3 kh\u00f4ng t\u1ea1o ra ho\u1eb7c x\u1eed l\u00fd logic nghi\u1ec7p v\u1ee5, t\u00e1c d\u1ee5ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 sao ch\u00e9p n\u1ed9i dung t\u1eeb m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y \u0111\u1ebfn kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp g\u1ea7n nh\u1ea5t, \u0111\u00f3ng vai tr\u00f2 \u201ctrung t\u00e2m truy\u1ec1n t\u1ea3i v\u00e0 ph\u00e2n ph\u1ed1i t\u1ed1c \u0111\u1ed9 cao\u201d. Th\u00f4ng th\u01b0\u1eddng, m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n g\u1ed1c, CDN \u0111\u00f3ng vai tr\u00f2 l\u00e0 l\u1edbp t\u0103ng t\u1ed1c, c\u1ea3 hai ph\u1ed1i h\u1ee3p l\u00e0m vi\u1ec7c c\u00f9ng nhau.<\/p>\n\n\n\n

Sau khi s\u1eed d\u1ee5ng CDN, d\u1eef li\u1ec7u trang web c\u00f3 an to\u00e0n kh\u00f4ng?<\/h3>\n\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng CDN t\u1ef1 n\u00f3 kh\u00f4ng l\u00e0m gi\u1ea3m t\u00ednh b\u1ea3o m\u1eadt d\u1eef li\u1ec7u c\u1ee7a trang web. C\u00e1c nh\u00e0 cung c\u1ea5p CDN uy t\u00edn cung c\u1ea5p giao ti\u1ebfp an to\u00e0n gi\u1eefa CDN v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c (nh\u01b0 giao th\u1ee9c ri\u00eang t\u01b0 ho\u1eb7c HTTPS v\u1ec1 ngu\u1ed3n), v\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache tr\u00ean c\u00e1c n\u00fat bi\u00ean an to\u00e0n.<\/p>\n\n\n\n

H\u01a1n n\u1eefa, CDN th\u1eadm ch\u00ed c\u00f2n c\u00f3 th\u1ec3 n\u00e2ng cao t\u00ednh b\u1ea3o m\u1eadt. N\u00f3 c\u00f3 th\u1ec3 \u1ea9n \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c, khi\u1ebfn n\u00f3 kh\u00f4ng d\u1ec5 tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau tr\u1ef1c ti\u1ebfp c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS. \u0110\u1ed3ng th\u1eddi, c\u00e1c t\u00ednh n\u0103ng t\u00edch h\u1ee3p nh\u01b0 T\u01b0\u1eddng l\u1eeda \u1ee8ng d\u1ee5ng Web (WAF) v\u00e0 b\u1ea3o v\u1ec7 DDoS c\u00f3 th\u1ec3 l\u1ecdc m\u1ed9t l\u01b0\u1ee3ng l\u1edbn l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i t\u1ea1i r\u00eca m\u1ea1ng, cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 cho m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n

N\u1ed9i dung trang web \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c b\u1eb1ng CDN kh\u00f4ng?<\/h3>\n\n\n\n

C\u00f3 th\u1ec3. Theo truy\u1ec1n th\u1ed1ng, CDN gi\u1ecfi t\u0103ng t\u1ed1c n\u1ed9i dung t\u0129nh, nh\u01b0ng hi\u1ec7n nay h\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 c\u00e1c CDN ch\u00ednh \u0111\u1ec1u h\u1ed7 tr\u1ee3 t\u0103ng t\u1ed1c n\u1ed9i dung \u0111\u1ed9ng. Nguy\u00ean l\u00fd kh\u00f4ng ph\u1ea3i l\u00e0 l\u01b0u cache k\u1ebft qu\u1ea3 \u0111\u1ed9ng (v\u00ec k\u1ebft qu\u1ea3 thay \u0111\u1ed5i t\u00f9y ng\u01b0\u1eddi d\u00f9ng), m\u00e0 l\u00e0 t\u1ed1i \u01b0u h\u00f3a hai \u0111o\u1ea1n \u0111\u01b0\u1eddng m\u1ea1ng: t\u1eeb ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn n\u00fat bi\u00ean CDN v\u00e0 t\u1eeb n\u00fat bi\u00ean CDN v\u1ec1 m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n

CDN t\u1eadn d\u1ee5ng c\u00e1c tuy\u1ebfn m\u1ea1ng ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n, k\u1ef9 thu\u1eadt t\u1ed1i \u01b0u TCP, t\u1ed1i \u01b0u h\u00f3a giao th\u1ee9c (nh\u01b0 HTTP\/2, QUIC) v\u00e0 \u0111\u1ecbnh tuy\u1ebfn th\u00f4ng minh \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 m\u1ea5t g\u00f3i tin, t\u1eeb \u0111\u00f3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i cho c\u00e1c y\u00eau c\u1ea7u API \u0111\u1ed9ng, k\u1ebft qu\u1ea3 truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c n\u1ed9i dung t\u01b0\u01a1ng t\u1ef1.<\/p>\n\n\n\n

Vi\u1ec7c tri\u1ec3n khai CDN c\u00f3 c\u1ea7n s\u1eeda \u0111\u1ed5i m\u00e3 code ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a website kh\u00f4ng?<\/h3>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u1ea7n s\u1eeda \u0111\u1ed5i m\u00e3 code ch\u01b0\u01a1ng tr\u00ecnh nghi\u1ec7p v\u1ee5 c\u1ed1t l\u00f5i. Vi\u1ec7c tri\u1ec3n khai CDN ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn c\u00f4ng vi\u1ec7c \u1edf c\u1ea5p \u0111\u1ed9 v\u1eadn h\u00e0nh v\u00e0 c\u1ea5u h\u00ecnh, bao g\u1ed3m vi\u1ec7c s\u1eeda \u0111\u1ed5i b\u1ea3n ghi ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n t\u1ea1i nh\u00e0 cung c\u1ea5p DNS (CNAME t\u00ean mi\u1ec1n \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 CDN), v\u00e0 th\u1ef1c hi\u1ec7n c\u1ea5u h\u00ecnh c\u00e1c quy t\u1eafc b\u1ed9 nh\u1edb \u0111\u1ec7m, thi\u1ebft l\u1eadp ngu\u1ed3n g\u1ed1c (origin) v.v. tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a nh\u00e0 cung c\u1ea5p CDN.<\/p>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh c\u1ea5p m\u00e3 code duy nh\u1ea5t c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay \u0111\u1ed5i li\u00ean k\u1ebft tham chi\u1ebfu t\u00e0i nguy\u00ean (v\u00ed d\u1ee5: thay \u0111\u1ed5i li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp \u0111\u1ebfn h\u00ecnh \u1ea3nh, file ki\u1ec3u d\u00e1ng th\u00e0nh tr\u1ecf \u0111\u1ebfn t\u00ean mi\u1ec1n CDN), nh\u01b0ng \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ef1 \u0111\u1ed9ng th\u00f4ng qua vi\u1ec7c c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 web ho\u1eb7c s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 x\u00e2y d\u1ef1ng (build tool).<\/p>","protected":false},"excerpt":{"rendered":"

CDN l\u00e0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi g\u1ed3m c\u00e1c m\u00e1y ch\u1ee7 ph\u00e2n t\u00e1n to\u00e0n c\u1ea7u, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m n\u1ed9i dung trang web t\u1ea1i c\u00e1c n\u00fat bi\u00ean g\u1ea7n ng\u01b0\u1eddi d\u00f9ng. Th\u00f4ng qua vi\u1ec7c ph\u00e2n gi\u1ea3i DNS th\u00f4ng minh v\u00e0 \u0111\u1ecbnh tuy\u1ebfn y\u00eau c\u1ea7u, n\u00f3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5, gi\u1ea3m t\u1ea3i cho m\u00e1y ch\u1ee7 g\u1ed1c, \u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i n\u1ed9i dung, t\u00ednh kh\u1ea3 d\u1ee5ng v\u00e0 b\u1ea3o m\u1eadt. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y c\u00f3 h\u1ec7 th\u1ed1ng quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng, l\u1ee3i \u00edch c\u1ed1t l\u00f5i v\u00e0 c\u00f4ng ngh\u1ec7 then ch\u1ed1t c\u1ee7a n\u00f3.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[278],"class_list":["post-12380143","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-cdn"],"acf":{"site_seo_keywords":"CDN,\u5185\u5bb9\u5206\u53d1\u7f51\u7edc,\u5de5\u4f5c\u539f\u7406,\u7f51\u7ad9\u52a0\u901f,\u7f13\u5b58\u6280\u672f,\u7f51\u7edc\u5ef6\u8fdf,\u63d0\u5347\u7f51\u7ad9\u6027\u80fd,CDN\u4f18\u52bf\u4e0e\u90e8\u7f72"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12380143","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\/12380143\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12380143"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12380143"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12380143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}