{"id":745,"date":"2020-04-01T09:29:10","date_gmt":"2020-04-01T09:29:10","guid":{"rendered":"https:\/\/egany.com\/blogs\/?p=745"},"modified":"2021-04-20T01:36:31","modified_gmt":"2021-04-20T01:36:31","slug":"pagespeed-5-cache-va-cdn-la-gi-tai-sao-no-giup-website-tai-nhanh-hon","status":"publish","type":"post","link":"https:\/\/egany.com\/blogs\/pagespeed-5-cache-va-cdn-la-gi-tai-sao-no-giup-website-tai-nhanh-hon\/","title":{"rendered":"PageSpeed 5: Cache v\u00e0 CDN l\u00e0 g\u00ec? T\u1ea1i sao n\u00f3 gi\u00fap website t\u1ea3i nhanh h\u01a1n?"},"content":{"rendered":"

Ch\u00e0o c\u00e1c b\u1ea1n, sau 2 tu\u1ea7n m\u1edbi l\u00ean b\u00e0i m\u1edbi kh\u00f4ng bi\u1ebft b\u00e0 c\u00f2n c\u00f3 ai nh\u1edb series n\u00e0y kh\u00f4ng!? Mong l\u00e0 m\u1ecdi ng\u01b0\u1eddi c\u00f2n nh\u1edb m\u00ecnh v\u00e0 series n\u00e0y ^^.
\nN\u1ebfu ch\u01b0a \u0111\u1ecdc th\u00ec xem l\u1ea1i c\u00e1c t\u1eadp tr\u01b0\u1edbc t\u1ea1i \u0111\u00e2y<\/a> nh\u00e9.
\nH\u00f4m nay m\u00ecnh ti\u1ebfp t\u1ee5c l\u00e0m b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 chia s\u1ebb v\u1edbi c\u00e1c b\u1ea1n 2 t\u1eeb kh\u00f3a \u0111\u01b0\u1ee3c nh\u1eafc nhi\u1ec1u trong vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang l\u00e0 Cache & CDN. Hai t\u1eeb kh\u00f3a n\u00e0y \u0111\u1eb7c th\u00f9 d\u00e0nh cho d\u00e2n k\u0129 thu\u1eadt, tuy nhi\u00ean m\u00ecnh s\u1ebd c\u1ed1 g\u1eafng m\u00f4 t\u1ea3 k\u00e8m c\u00e1c v\u00ed d\u1ee5 b\u00ecnh d\u00e2n \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi d\u1ec5 hi\u1ec3u h\u01a1n nh\u00e9. \u0110\u1eebng qu\u00e1 lo l\u1eafng, b\u1eaft \u0111\u1ea7u n\u00e0o.<\/p>\n

CACHE<\/h2>\n

Ch\u1eafc h\u1eb3n c\u00e1c b\u1ea1n c\u0169ng \u00edt nh\u1ea5t th\u1ea5y t\u1eeb kh\u00f3a n\u00e0y m\u1ed9t v\u00e0i l\u1ea7n r\u1ed3i, c\u00f3 th\u1ec3 l\u00e0 khi xem c\u1ea5u h\u00ecnh \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 laptop, hay khi x\u00e0i tr\u00ecnh duy\u1ec7t Chrome\/Safari c\u0169ng \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn "X\u00f3a cache \u0111i \u0111\u1ec3 t\u1ea3i l\u1ea1i trang coi h\u1ebft l\u1ed7i ch\u01b0a?"<\/p>\n

V\u1eady CACHE l\u00e0 g\u00ec?<\/h3>\n

Theo m\u00f4 t\u1ea3 t\u1eeb Wikipedia:<\/p>\n

\n

Trong tin h\u1ecdc, cache (\/\u02c8k\u00e6\u0283\/ KASH) l\u00e0 b\u1ed9 nh\u1edb \u0111\u1ec7m ch\u1ee9a d\u1eef li\u1ec7u, c\u00e1c d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c n\u1eb1m ch\u1edd y\u00eau c\u1ea7u t\u1eeb \u1ee9ng d\u1ee5ng ho\u1eb7c ph\u1ea7n c\u1ee9ng.
\nD\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ch\u1ee9a trong cache c\u00f3 th\u1ec3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a t\u00ednh to\u00e1n tr\u01b0\u1edbc \u0111\u00f3, ho\u1eb7c l\u00e0 s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u1edf m\u1ed9t n\u01a1i kh\u00e1c.
\nPh\u1ea7n c\u1ee9ng c\u00e0i \u0111\u1eb7t cache nh\u01b0 m\u1ed9t n\u01a1i ch\u1ee9a d\u1eef li\u1ec7u t\u1ea1m th\u1eddi \u0111\u1ec3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ea1i. Vi x\u1eed l\u00fd (CPUs) v\u00e0 \u1ed5 \u0111\u0129a c\u1ee9ng (HDD) th\u01b0\u1eddng xuy\u00ean s\u1eed d\u1ee5ng Cache, t\u01b0\u01a1ng t\u1ef1 tr\u00ecnh duy\u1ec7t web v\u00e0 m\u00e1y ch\u1ee7 (server).<\/p>\n<\/blockquote>\n

H\u01a1i r\u1ed1i \u0111\u00fang kh\u00f4ng, d\u0129 nhi\u00ean m\u00ecnh kh\u00f4ng \u0111\u1ecbnh ch\u1ec9 k\u1ebft th\u00fac b\u1eb1ng vi\u1ec7c sao ch\u00e9p c\u1ea3 \u0111o\u1ea1n tr\u00ean Wiki cho m\u1ecdi ng\u01b0\u1eddi l\u00e0 xong..hehe.. <\/p>\n

V\u1eady n\u00ean m\u00ecnh s\u1ebd m\u00f4 t\u1ea3 th\u00eam b\u1eb1ng v\u00ed d\u1ee5 b\u00ean d\u01b0\u1edbi v\u00e0 r\u1ed3i so s\u00e1nh chi ti\u1ebft h\u01a1n cho m\u1ecdi ng\u01b0\u1eddi d\u1ec5 hi\u1ec3u h\u01a1n nh\u00e9.<\/p>\n

\n

\u00c0.. do ph\u1ea1m vi series b\u00e0i vi\u1ebft \u0111ang n\u00f3i v\u1ec1 website n\u00ean m\u00ecnh c\u0169ng gi\u1ea3i th\u00edch xoay quanh website th\u00f4i nh\u00e9.<\/p>\n<\/blockquote>\n

V\u00ed d\u1ee5 v\u1ec1 ti\u1ec7m photocopy g\u1ea7n tr\u01b0\u1eddng h\u1ecdc:<\/h3>\n

C\u00e1c ti\u1ec7m n\u00e0y hay c\u00f3 b\u00e1n ti\u1ec3u lu\u1eadn m\u1eabu v\u00e0 "phao" cho h\u1ecdc sinh \/ sinh vi\u00ean n\u00e8, h\u1ecd cung c\u1ea5p "phao" \u1edf \u0111\u00e2y c\u0169ng gi\u1ed1ng website cung c\u1ea5p #cache v\u1eady.<\/p>\n

Thay v\u00ec b\u1ea1n ph\u1ea3i t\u1ef1 t\u00ecm ki\u1ebfm, l\u1ee5c l\u1ecdi Google m\u1ed7i n\u01a1i m\u1ed9t t\u00ed (d\u1eef li\u1ec7u) r\u1ed3i so\u1ea1n th\u00e0nh l\u1eddi gi\u1ea3i cho \u0111\u1ec1 thi m\u1eabu v\u1eeba kh\u00edt c\u00e1i "phao" cho d\u1ec5 x\u00e0i, xong ph\u1ea3i \u0111em t\u1edbi ti\u1ec7m ch\u1edd in c\u1ea3 bu\u1ed5i n\u1eefa.<\/p>\n

→ th\u00ec gi\u1edd b\u1ea1n ch\u1ec9 vi\u1ec7c t\u1edbi mua c\u00e1i "phao" c\u00f3 s\u1eb5n ngon l\u00e0nh \u0111\u1ec3 x\u00e0i th\u00f4i.<\/em><\/p>\n

V\u00ec \u0111\u1ec1 b\u00e0i n\u00e0y c\u00f3 ng\u01b0\u1eddi gi\u1ea3i r\u1ed3i, h\u1ecd c\u0169ng \u0111\u00e3 t\u1ed1n nhi\u1ec1u c\u00f4ng s\u1ee9c so\u1ea1n th\u00e0nh "phao" x\u1ecbn s\u00f2 \u0111\u1ec3 in ra c\u1ea3 ng\u00e0n b\u1ea3n \u0111\u1ec3 s\u1eb5n, b\u1ea1n ch\u1ec9 vi\u1ec7c t\u1edbi h\u1ed1t \u0111em v\u1ec1 x\u00e0i th\u00f4i.<\/p>\n

Nhanh – g\u1ecdn – l\u1eb9.<\/p>\n

Gi\u1ea3i th\u00edch th\u00eam b\u1eb1ng ph\u00e9p so s\u00e1nh:<\/h3>\n
    \n
  1. V\u00ed d\u1ee5 b\u1ea1n gi\u1ed1ng nh\u01b0 m\u00e1y ch\u1ee7 web (webserver) c\u00f3 CPU, HDD, RAM..v.v…<\/li>\n
  2. Th\u00f4ng tin l\u1eddi gi\u1ea3i r\u1ea3i r\u00e1c kh\u1eafp n\u01a1i m\u00e0 b\u1ea1n \u0111i t\u00ecm ki\u1ebfm v\u00e0 t\u1ed5ng h\u1ee3p l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u (database)<\/li>\n
  3. \u0110\u1ec3 gi\u1ea3i \u0111\u1ec1 b\u00e0i y\u00eau c\u1ea7u "Ph\u00e2n t\u00edch B\u00ecnh Ng\u00f4 \u0110\u1ea1i C\u00e1o" t\u01b0\u01a1ng \u0111\u01b0\u01a1ng y\u00eau c\u1ea7u m\u1edf trang https:\/\/website-cua-tui.com\/bai-viet\/phan-tich-binh-ngo-dai-cao<\/a><\/li>\n
  4. V\u00e0 "phao" l\u00e0 k\u1ebft qu\u1ea3 hi\u1ec3n th\u1ecb trang web tr\u00ean nh\u1ecf g\u1ecdn tr\u00ean l\u00f2ng b\u00e0n tay c\u1ee7a b\u1ea1n, d\u1ec5 gi\u1ea5u v\u00e0 d\u1ec5 \u0111\u1ecdc<\/li>\n<\/ol>\n

    B\u1edfi v\u1eady, \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u00e1i "phao" \u0111\u1ec3 x\u00e0i b\u1ea1n ph\u1ea3i \u0111i t\u00ecm ki\u1ebfm v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u, s\u1eafp x\u1ebfp l\u1ea1i cho \u0111\u00fang, \u0111\u1ecbnh d\u1ea1ng v\u0103n b\u1ea3n l\u1ea1i cho \u0111\u1eb9p → xong m\u1edbi t\u1ea1o th\u00e0nh t\u1eadp tin phao.docx r\u1ed3i \u0111em ra ti\u1ec7m in. B\u1ea1n – webserver l\u00e0m vi\u1ec7c h\u01a1i m\u1ec7t heng?<\/p>\n

    \n

    C\u00f3 cache r\u1ed3i th\u00ec y nh\u01b0 c\u00f3 t\u1edd "phao" copy s\u1eb5n, ai y\u00eau c\u1ea7u ph\u00e1t cho x\u00e0i li\u1ec1n. Nh\u00e0n!<\/p>\n<\/blockquote>\n

    \u0110\u1ebfn \u0111\u00e2y ch\u1eafc b\u1ea1n c\u0169ng \u0111\u00e3 hi\u1ec3u h\u01a1n v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a cache trong vi\u1ec7c t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 t\u1ea3i trang r\u1ed3i \u0111\u00fang kh\u00f4ng. Website c\u00f3 cache th\u01b0\u1eddng ch\u1ea1y ph\u00e0 ph\u00e0, \u0111\u00f4ng kh\u00e1ch truy c\u1eadp h\u01a1n c\u0169ng kh\u00f4ng.. d\u1ec5 ch\u1ebft nh\u01b0 tr\u01b0\u1edbc n\u1eefa. <\/p>\n

    Chi ti\u1ebft th\u00ec c\u00f3 nhi\u1ec1u lo\u1ea1i cache v\u00e0 c\u01a1 ch\u1ebf x\u1eed l\u00fd cache (API, Proxy, Gateway, Browser..) nh\u01b0ng c\u00e1i n\u00e0y c\u1ee9 \u0111\u1ec3 cho c\u00e1c b\u1ea1n chuy\u00ean k\u0129 thu\u1eadt nghi\u00ean c\u1ee9u v\u00e0 x\u1eed l\u00fd, m\u00ecnh ch\u1ec9 c\u1ea7n bi\u1ebft website \u0111\u00e3 c\u00f3 cache l\u00e0 \u0111\u01b0\u1ee3c r\u1ed3i.<\/em><\/p>\n

    CDN<\/h2>\n

    Th\u01b0\u1eddng c\u00e1c b\u00e0i vi\u1ebft hay t\u00e1ch ri\u00eang 2 ch\u1ee7 \u0111\u1ec1 Cache & CDN ra, nh\u01b0ng m\u00ecnh th\u00ec th\u1ea5y n\u1ebfu \u0111\u00e3 gi\u1edbi thi\u1ec7u t\u1edbi Cache m\u00e0 kh\u00f4ng tr\u00ecnh b\u00e0y lu\u00f4n CDN th\u00ec h\u01a1i.. \u0111\u1ee9t m\u1ea1ch x\u00edu, n\u00ean m\u00ecnh gom v\u00e0o m\u1ed9t ch\u1ed7 r\u1ed3i.. l\u00ean ph\u01b0\u1eddng tr\u00ecnh b\u00e0y 1 l\u1ea7n lu\u00f4n.<\/p>\n

    V\u1eady CDN l\u00e0 g\u00ec?<\/h3>\n

    CDN l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Content Delivery Network, c\u00f3 th\u1ec3 t\u1ea1m d\u1ecbch l\u00e0 m\u1ea1ng l\u01b0\u1edbi c\u00e1c m\u00e1y ch\u1ee7 cung c\u1ea5p b\u1ea3n sao n\u1ed9i dung t\u0129nh trong website. V\u1edbi h\u1ec7 th\u1ed1ng c\u00e1c m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi s\u1ebd gi\u00fap t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 website cho ng\u01b0\u1eddi truy c\u1eadp, c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng website.<\/p>\n

    Nghe c\u00f3 g\u00ec \u0111\u00f3 gi\u1ed1ng gi\u1ed1ng Cache \u0111\u00fang kh\u00f4ng, v\u00ec n\u00f3 c\u0169ng l\u01b0u l\u1ea1i b\u1ea3n photocopy m\u00e0. \u1eeaa.. nh\u01b0ng n\u00f3 c\u00f3 nhi\u1ec1u th\u1ee9 hay ho h\u01a1n \u0111\u1ea5y.<\/p>\n

    \u0110\u1ecdc ti\u1ebfp \u0111o\u1ea1n m\u00f4 t\u1ea3 b\u00ean d\u01b0\u1edbi nh\u00e9…<\/p>\n

    \n

    CDN (Content Delivery Network) l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn th\u00f4ng minh c\u1ee7a c\u00f4ng ngh\u1ec7 nh\u1eb1m gi\u1ea3i quy\u1ebft vi\u1ec7c v\u1eadn h\u00e0nh qu\u00e1 t\u1ea3i c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng Server v\u00e0 gi\u1ea3m th\u1eddi gian truy c\u1eadp cho c\u00e1c website.
    \nC\u1ee5 th\u1ec3 nh\u1eb1m \u0111\u01b0a ra gi\u1ea3i ph\u00e1p gi\u00fap gi\u1ea3m t\u1ea3i cho c\u00e1c m\u00e1y ch\u1ee7 v\u1eadn h\u00e0nh ch\u00ednh h\u1ec7 th\u1ed1ng, v\u1edbi t\u00ednh n\u0103ng l\u01b0u tr\u1eef v\u00e0 ph\u00e2n t\u1ea3i c\u00e1c d\u1eef li\u1ec7u t\u0129nh \u00edt thay \u0111\u1ed5i nh\u01b0 \u201ch\u00ecnh \u1ea3nh, video clip, m\u00e3 ngu\u1ed3n, css\u201d t\u1ea1i c\u00e1c m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi.
    \nH\u1ec7 th\u1ed1ng CDN \u0111\u01b0\u1ee3c hi\u1ec3u n\u00f4m na bao g\u1ed3m r\u1ea5t nhi\u1ec1u Server ch\u1ee9a c\u00e1c d\u1eef li\u1ec7u t\u0129nh nh\u01b0 h\u00ecnh \u1ea3nh, video, css, js,\u2026 \u0111\u01b0\u1ee3c \u0111\u1eb7t kh\u1eafp n\u01a1i tr\u00ean th\u1ebf gi\u1edbi nh\u1eb1m cung c\u1ea5p d\u1eef li\u1ec7u 1 c\u00e1ch nhanh nh\u1ea5t cho ng\u01b0\u1eddi truy c\u1eadp.<\/p>\n<\/blockquote>\n

    R\u1ed3i, s\u00e1ch v\u1edf nh\u01b0 \u1edf tr\u00ean \u0111\u00e3 \u0111\u1ee7, nghe h\u01a1i ong ong c\u00e1i \u0111\u1ea7u r\u1ed3i. Gi\u1edd m\u00ecnh b\u1eaft \u0111\u1ea7u gi\u1ea3i th\u00edch l\u1ea1i cho \u0111\u01a1n gi\u1ea3n h\u01a1n b\u1eb1ng nhi\u1ec1u g\u1ea1ch \u0111\u1ea7u d\u00f2ng nh\u00e9:<\/p>\n

      \n
    1. Webserver c\u1ee7a m\u00ecnh \u0111\u00e3 t\u1ef1 t\u1ea1o b\u1ea3n sao (nh\u01b0 tr\u00ean r\u1ed3i), tuy nhi\u00ean n\u00f3 c\u0169ng ph\u1ea3i t\u1ef1 x\u1eed l\u00fd ph\u00e1t t\u00e0i nguy\u00ean ("phao") cho ng\u01b0\u1eddi d\u00f9ng.<\/li>\n
    2. C\u00f2n CDN gi\u00fap m\u00ecnh ch\u1ee9a \u0111\u01b0\u1ee3c b\u1ea3n sao cho c\u00e1c trang k\u1ebft qu\u1ea3 (t\u0129nh) g\u1ed3m: HTML, CSS, JS, Images, Videos.. tr\u00ean h\u1ec7 th\u1ed1ng server c\u1ee7a n\u00f3.<\/li>\n
    3. Ai truy c\u1eadp website th\u00ec CDN s\u1ebd c\u1ea5p b\u1ea3n sao cho thay v\u00ec webserver c\u1ee7a m\u00ecnh ph\u1ea3i c\u1ea5p cho h\u1ecd. <\/li>\n
    4. Webserver c\u1ee7a m\u00ecnh l\u00fac n\u00e0y "bao r\u1ea3nh r\u1ed7i" lu\u00f4n v\u00ec g\u1ea7n nh\u01b0 x\u1eed l\u00fd r\u1ea5t \u00edt.<\/li>\n<\/ol>\n

      Gi\u1edd b\u1ea1n th\u1ea5y n\u00f3 gi\u1ed1ng nh\u01b0 ti\u1ec7m photocopy in ra 1 tri\u1ec7u b\u1ea3n r\u1ed3i, m\u00e0 \u0111\u00f4ng h\u1ecdc sinh qu\u00e1 ph\u00e1t m\u1ecfi tay (c\u00f3 khi n\u00f3 \u1edf US \u0111\u1eb7t h\u00e0ng th\u00ec c\u00f2n m\u1ecfi. ch\u00e2n n\u1eefa)<\/p>\n

      \u2192 V\u1eady n\u00ean CDN s\u1ebd l\u00e0 c\u00e1c \u0111\u1ea1i l\u00fd ho\u1eb7c kho trung chuy\u1ec3n kh\u1eafp n\u01a1i v\u1eady.
      \n\u2192 \u1ede M\u1ef9 h\u00fa th\u00ec k\u00eau kho b\u00ean M\u1ef9 giao, \u1edf Vi\u1ec7t Nam c\u1ea7n th\u00ec cho kho Vi\u1ec7t Nam giao.<\/em><\/p>\n

      V\u00ec v\u1eady m\u1ecdi ng\u01b0\u1eddi \u0111\u1eebng nh\u1ea7m l\u1eabn gi\u1eefa webserver\/hosting v\u1edbi CDN nh\u00e9, v\u00ec \u00f4ng CDN l\u1ea5y b\u1ea3n sao \u0111i ph\u00e1t th\u00f4i, kh\u00f4ng x\u1eed l\u00fd nh\u00e0o n\u1eb7n d\u1eef li\u1ec7u hay th\u1ef1c thi t\u00ednh n\u0103ng b\u1ea1n m\u1edbi code th\u00eam v\u00f4 g\u00ec c\u1ea3.<\/p>\n

      Ngo\u00e0i ra, CDN c\u00f2n nhi\u1ec1u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u01b0:<\/h3>\n
        \n
      • H\u1ec7 th\u1ed1ng server chuy\u00ean d\u1ee5ng, t\u1ed1c \u0111\u1ed9 cao cho t\u1eadp tin t\u0129nh n\u00ean t\u1ea3i nhanh h\u01a1n nhi\u1ec1u.<\/li>\n
      • H\u1ea7u h\u1ebft CDN ph\u1ed5 bi\u1ebfn hi\u1ec7n t\u1ea1i \u0111\u1ec1u c\u00f3 t\u00ednh n\u0103ng n\u00e9n, g\u1ed9p c\u00e1c t\u1eadp tin theo chu\u1ea9n b\u00e0i Google PageSpeed.<\/li>\n
      • T\u1ef1 \u0111\u1ed9ng l\u01b0u cache c\u00e1c trang web \u0111\u00e3 \u0111\u01b0\u1ee3c truy c\u1eadp tr\u01b0\u1edbc \u0111\u00f3 \u2192 v\u00ec v\u1eady gi\u00fap webserver g\u1ed1c gi\u1ea3m t\u1ea3i c\u1ef1c k\u00ec nhi\u1ec1u.<\/li>\n
      • HA – t\u00ednh s\u1eb5n s\u00e0ng cao, ki\u1ebfn tr\u00fac ph\u1ea7n t\u00e1n v\u1edbi nhi\u1ec1u server h\u1ed7 tr\u1ee3 cho nhau, l\u1ea1i c\u00f3 Firewall n\u00ean kh\u00f3.. ch\u1ebft \u0111\u01b0\u1ee3c.<\/li>\n
      • \u0110\u00f4i l\u00fac c\u00f2n c\u00f3 t\u00ednh n\u0103ng \u1ea9n IP th\u1eadt, gi\u00fap k\u1ebb t\u1ea5n c\u00f4ng kh\u00f3 t\u00ecm \u0111\u01b0\u1ee3c IP webserver c\u1ee7a b\u1ea1n.<\/li>\n
      • T\u1ef1 \u0111\u1ed9ng b\u1eaft \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp \u0111\u1ec3 ch\u1ecdn ra server g\u1ea7n nh\u1ea5t ph\u1ea3n h\u1ed3i cho ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n

        CH\u1ed0T L\u1ea0I<\/h2>\n

        Khi n\u00e0o th\u00ec c\u1ea7n d\u00f9ng Cache?<\/h3>\n

        \u2714\ufe0f Khuy\u1ebfn c\u00e1o lu\u00f4n c\u00f3 cache \u0111\u1ec3 kh\u00f4ng x\u1eed l\u00fd l\u1ea1i nh\u1eefng t\u00e1c v\u1ee5 kh\u00f4ng \u0111\u00e1ng, l\u00e0m webserver lu\u00f4n b\u1eadn r\u1ed9n r\u1ed3i.. \u0111\u00ecnh c\u00f4ng s\u1edbm lu\u00f4n.<\/p>\n

        \u2714\ufe0f Mi\u1ec5n sao x\u1eed l\u00fd Cache kh\u00e9o tr\u00e1nh l\u1ed7i l\u00e0 \u0111\u01b0\u1ee3c.<\/p>\n

        Khi n\u00e0o c\u1ea7n d\u00f9ng CDN?<\/h3>\n

        \u2714\ufe0f Khi c\u00f3 \u0111i\u1ec1u ki\u1ec7n ^^<\/p>\n

        \u2714\ufe0f Khi c\u00f3 l\u01b0\u1ee3t truy c\u1eadp l\u1edbn, t\u1ed1n nhi\u1ec1u b\u0103ng th\u00f4ng m\u00e0 1 m\u00ecnh webserver hi\u1ec7n t\u1ea1i (\u0111ang ki\u00eam nhi\u1ec7m nhi\u1ec1u vi\u1ec7c) ph\u1ea3i x\u1eed l\u00fd cho download nhi\u1ec1u t\u1eadp tin t\u0129nh n\u1eefa.<\/p>\n

        \u2714\ufe0f Khi m\u00e1y ch\u1ee7 xa ng\u01b0\u1eddi d\u00f9ng qu\u00e1, v\u00ed d\u1ee5 webserver \u1edf Vi\u1ec7t Nam m\u00e0 kh\u00e1ch h\u00e0ng b\u00ean M\u1ef9 v\u00e0o th\u00ec b\u1ecb delay \u00edt nh\u1ea5t c\u0169ng 200ms r\u1ed3i, ch\u01b0a t\u00ednh th\u1eddi gian x\u1eed l\u00fd. <\/p>\n

        C\u01a1m th\u00eam:<\/h4>\n
          \n
        • Th\u01b0\u1eddng h\u1ec7 th\u1ed1ng b\u1ea1n t\u1ef1 d\u1ef1ng th\u00ec m\u1edbi ph\u1ea3i t\u1ef1 c\u00e0i \u0111\u1eb7t (ho\u1eb7c code) t\u00ednh n\u0103ng x\u1eed l\u00fd cache \u2192 v\u00ed d\u1ee5 t\u1ef1 d\u1ef1ng website b\u1eb1ng WordPress th\u00ec d\u00f9ng plugin LitespeedCache ho\u1eb7c W3Total Cache l\u00e0 ngon r\u1ed3i.<\/li>\n
        • Ngo\u00e0i ra do t\u1ef1 d\u1ef1ng, t\u1ef1 thu\u00ea hosting\/webserver n\u00ean mu\u1ed1n c\u00f3 CDN b\u1ea1n ph\u1ea3i t\u1ef1 \u0111i thu\u00ea v\u00e0 c\u1ea5u h\u00ecnh cho website c\u1ee7a m\u00ecnh. C\u00e1c nh\u00e0 cung c\u1ea5p CDN n\u1ed5i ti\u1ebfng nhi\u1ec1u ng\u01b0\u1eddi bi\u1ebft nh\u01b0 l\u00e0 Cloudflare, Amazon Cloudfront, MaxCDN.. c\u0169ng h\u1ed7 tr\u1ee3 ngu\u1ed3n m\u1edf kh\u00e1 nhi\u1ec1u n\u00ean c\u0169ng d\u1ec5 c\u1ea5u h\u00ecnh. Tuy nhi\u00ean, b\u1ea1n ph\u1ea3i nh\u1edd k\u0129 thu\u1eadt can thi\u1ec7p ch\u1ee9 kh\u00f4ng l\u00e0 d\u1ec5 r\u1ed1i l\u1eafm.<\/li>\n
        • C\u00f2n c\u00e1c h\u1ec7 th\u1ed1ng tr\u1ea3 ph\u00ed nh\u01b0 Shopify, Haravan, Sapo hay LadiPage th\u00ec ng\u01b0\u1eddi ta \u0111\u1ea7u t\u01b0 CDN s\u1eb5n tr\u1ecdn g\u00f3i, bao ti\u1ebft ki\u1ec7m r\u1ed3i, kh\u00f4ng c\u1ea7n ph\u1ea3i c\u00f3 \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c \u0111i thu\u00ea th\u00eam n\u1eefa.<\/li>\n<\/ul>\n

          Mong r\u1eb1ng b\u00e0i vi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1edbi m\u1ecdi ng\u01b0\u1eddi.<\/p>\n

          H\u1eb9n g\u1eb7p nhau v\u00e0o tu\u1ea7n t\u1edbi nh\u00e9!<\/p>\n","protected":false},"excerpt":{"rendered":"

          Ch\u00e0o c\u00e1c b\u1ea1n, sau 2 tu\u1ea7n m\u1edbi l\u00ean b\u00e0i m\u1edbi kh\u00f4ng bi\u1ebft b\u00e0 c\u00f2n c\u00f3 ai nh\u1edb series n\u00e0y kh\u00f4ng!? Mong l\u00e0 m\u1ecdi ng\u01b0\u1eddi c\u00f2n nh\u1edb m\u00ecnh v\u00e0 series n\u00e0y ^^. N\u1ebfu ch\u01b0a \u0111\u1ecdc th\u00ec xem l\u1ea1i c\u00e1c t\u1eadp tr\u01b0\u1edbc t\u1ea1i \u0111\u00e2y nh\u00e9. H\u00f4m nay m\u00ecnh ti\u1ebfp t\u1ee5c l\u00e0m b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 chia s\u1ebb v\u1edbi c\u00e1c b\u1ea1n 2 t\u1eeb kh\u00f3a \u0111\u01b0\u1ee3c nh\u1eafc nhi\u1ec1u trong vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 t\u1ea3i trang l\u00e0 Cache & CDN. Hai t\u1eeb kh\u00f3a n\u00e0y \u0111\u1eb7c th\u00f9 d\u00e0nh cho d\u00e2n k\u0129 thu\u1eadt, tuy nhi\u00ean m\u00ecnh s\u1ebd c\u1ed1 g\u1eafng m\u00f4 t\u1ea3 k\u00e8m c\u00e1c v\u00ed d\u1ee5 b\u00ecnh d\u00e2n<\/p>\n","protected":false},"author":5,"featured_media":746,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[54],"tags":[56,55],"_links":{"self":[{"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/posts\/745"}],"collection":[{"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/comments?post=745"}],"version-history":[{"count":0,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/posts\/745\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/media\/746"}],"wp:attachment":[{"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/media?parent=745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/categories?post=745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egany.com\/blogs\/wp-json\/wp\/v2\/tags?post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}