{"id":18646,"date":"2021-01-25T14:07:57","date_gmt":"2021-01-25T07:07:57","guid":{"rendered":"https:\/\/speed.family\/?p=18646"},"modified":"2023-09-04T22:52:39","modified_gmt":"2023-09-04T15:52:39","slug":"perma-cache-bunnycdn","status":"publish","type":"post","link":"https:\/\/kiencang.net\/perma-cache-bunnycdn\/","title":{"rendered":"T\u00ednh n\u0103ng Perma-Cache c\u1ee7a BunnyCDN c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?"},"content":{"rendered":"\n<p>Perma-Cache l\u00e0 m\u1ed9t l\u1edbp <em>cache v\u0129nh vi\u1ec5n th\u1ee9 c\u1ea5p<\/em> (h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn t\u1eeb v\u0129nh vi\u1ec5n), n\u00f3 n\u1eb1m gi\u1eefa CDN v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n.\u00a0Khi m\u1ed9t y\u00eau c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache tr\u00ean CDN v\u00e0 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn <a href=\"https:\/\/kiencang.net\/may-chu-goc\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u00e1y ch\u1ee7 g\u1ed1c<\/a>, tr\u01b0\u1edbc ti\u00ean CDN s\u1ebd ki\u1ec3m tra v\u1edbi b\u1ed9 l\u01b0u tr\u1eef Geo-Replicated \u0111\u1ec3 xem li\u1ec7u t\u1ec7p c\u00f3 s\u1eb5n \u1edf \u0111\u00f3 hay kh\u00f4ng.<\/p>\n\n\n\n<p class=\"has-luminous-vivid-amber-background-color has-background\">Xem th\u00eam: <a href=\"https:\/\/kiencang.net\/gioi-thieu-perma-cache\/\" target=\"_blank\" rel=\"noreferrer noopener\">gi\u1edbi thi\u1ec7u t\u00ednh n\u0103ng Perma-Cache<\/a>.<\/p>\n\n\n\n<p>Do \u0111\u1ecbnh tuy\u1ebfn \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a v\u00e0 d\u1ea5u \u1ea5n to\u00e0n c\u1ea7u (global footprint) c\u1ee7a Geo-Replicated (b\u1ed9 nh\u1edb \u0111\u01b0\u1ee3c sao ch\u00e9p theo \u0111\u1ecba l\u00fd) c\u1ee7a ch\u00fang t\u00f4i, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 c\u00f3 t\u00e1c d\u1ee5ng t\u0103ng hi\u1ec7u su\u1ea5t r\u1ea5t c\u00f3 l\u1ee3i cho n\u1ed9i dung ch\u01b0a \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 l\u01b0u l\u01b0\u1ee3ng t\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n.&nbsp;<\/p>\n\n\n\n<p>Thay v\u00ec c\u1ee9 ph\u1ea3i chuy\u1ec3n t\u1eeb CDN \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n, th\u00ec kh\u1ea3 n\u0103ng cao l\u00e0 t\u1ec7p \u0111\u00e3 c\u00f3 s\u1eb5n ngay b\u00ean c\u1ea1nh c\u00e1c n\u00fat CDN tr\u00ean b\u1ed9 nh\u1edb sao ch\u00e9p to\u00e0n c\u1ea7u (globally replicated storage) c\u1ee7a ch\u00fang t\u00f4i.&nbsp;\u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m th\u1eddi gian ch\u1edd v\u00e0 t\u0103ng \u0111\u00e1ng k\u1ec3 th\u00f4ng l\u01b0\u1ee3ng (throughput) cho c\u00e1c t\u1ec7p ch\u01b0a cache (tr\u00ean CDN) nh\u01b0ng \u0111\u00e3 n\u1eb1m tr\u00ean Perma-Cache.<\/p>\n\n\n\n<p>H\u00e3y xem n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o nh\u00e9.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d7551d501\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d7551d501\"  type=\"checkbox\" id=\"item-6577d7551d501\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/perma-cache-bunnycdn\/#Bo_nho_dem\" title=\"B\u1ed9 nh\u1edb \u0111\u1ec7m\">B\u1ed9 nh\u1edb \u0111\u1ec7m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/perma-cache-bunnycdn\/#Xoa_bo_nho_cache\" title=\"X\u00f3a b\u1ed9 nh\u1edb cache\">X\u00f3a b\u1ed9 nh\u1edb cache<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/perma-cache-bunnycdn\/#Header_Tieu_de\" title=\"Header \/ Ti\u00eau \u0111\u1ec1\">Header \/ Ti\u00eau \u0111\u1ec1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/perma-cache-bunnycdn\/#CDN_Cache\" title=\"CDN Cache\">CDN Cache<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bo_nho_dem\"><\/span>B\u1ed9 nh\u1edb \u0111\u1ec7m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Perma-Cache c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 v\u00f9ng l\u01b0u tr\u1eef (storage zone) n\u00e0o tr\u00ean <a href=\"https:\/\/kiencang.net\/gioi-thieu-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">BunnyCDN<\/a> v\u00e0 s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac th\u01b0 m\u1ee5c \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong&nbsp;b\u00e0i vi\u1ebft v\u1ec1 <em>C\u1ea5u tr\u00fac th\u01b0 m\u1ee5c Perma-Cache<\/em> (c\u00f3 th\u1ec3 Ki\u1ebfn c\u00e0ng s\u1ebd d\u1ecbch sau).<\/p>\n\n\n\n<p>N\u1ebfu t\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y tr\u00ean b\u1ed9 nh\u1edb cache CDN, y\u00eau c\u1ea7u sau \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n b\u00ecnh th\u01b0\u1eddng tr\u1edf l\u1ea1i m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 CDN.&nbsp;\u0110\u1ed3ng th\u1eddi, m\u1ed9t y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn h\u1ec7 th\u1ed1ng Perma-Cache, h\u1ec7 th\u1ed1ng n\u00e0y sau \u0111\u00f3 b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh l\u01b0u b\u1ed9 \u0111\u1ec7m \u1edf ch\u1ebf \u0111\u1ed9 n\u1ec1n (background caching) m\u1ed9t c\u00e1ch kh\u00f4ng \u0111\u1ed3ng b\u1ed9.&nbsp;H\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i l\u1ea1i v\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n v\u00e0 t\u1ea3i t\u1ec7p t\u1eeb g\u1ed1c c\u1ee7a b\u1ea1n xu\u1ed1ng b\u1ed9 nh\u1edb \u0111\u01b0\u1ee3c sao ch\u00e9p theo \u0111\u1ecba l\u00fd c\u1ee7a ch\u00fang t\u00f4i.&nbsp;T\u00f9y thu\u1ed9c v\u00e0o h\u1ec7 th\u1ed1ng sao ch\u00e9p c\u1ee7a b\u1ea1n, t\u1ec7p sau \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c sao ch\u00e9p sang m\u1ea1ng l\u01b0u tr\u1eef to\u00e0n c\u1ea7u c\u1ee7a ch\u00fang t\u00f4i.<\/p>\n\n\n\n<p>L\u1ea7n ti\u1ebfp theo m\u1ed9t n\u00fat CDN s\u1ebd y\u00eau c\u1ea7u t\u1ec7p n\u00e0y nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a MISS trong b\u1ed9 nh\u1edb cache, n\u00f3 s\u1ebd c\u00f3 s\u1eb5n tr\u00ean n\u00fat l\u01b0u tr\u1eef v\u00e0 c\u00e1c y\u00eau c\u1ea7u s\u1ebd kh\u00f4ng bao gi\u1edd l\u1ea5y d\u1eef li\u1ec7u t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n n\u1eefa.&nbsp;T\u1ec7p s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u0129nh vi\u1ec5n trong h\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang t\u00f4i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p>MISS b\u1ed9 nh\u1edb cache tr\u00ean CDN kh\u00f4ng \u0111\u1ea3m b\u1ea3o 100% r\u1eb1ng m\u1ed9t t\u1ec7p s\u1ebd xu\u1ea5t hi\u1ec7n trong Perma-Cache, v\u00ec v\u1eady ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 thay th\u1ebf cho b\u1ed9 nh\u1edb v\u0129nh vi\u1ec5n c\u1ee7a b\u1ea1n (\u00fd l\u00e0 b\u1ea1n \u0111\u1eebng x\u00f3a \u1ea3nh, ho\u1eb7c c\u00e1c t\u00e0i nguy\u00ean t\u0129nh kh\u00e1c tr\u00ean host g\u1ed1c c\u1ee7a b\u1ea1n).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Xoa_bo_nho_cache\"><\/span>X\u00f3a b\u1ed9 nh\u1edb cache<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Perma-Cache c\u0169ng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o API x\u00f3a t\u1ec7p (file purging) c\u1ee7a ch\u00fang t\u00f4i.&nbsp;Khi m\u1ed9t URL duy nh\u1ea5t \u0111\u01b0\u1ee3c x\u00f3a th\u00f4ng qua API, tr\u01b0\u1edbc ti\u00ean h\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang t\u00f4i s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn storage \u0111\u1ec3 x\u00f3a t\u1ec7p \u0111\u00e3 l\u01b0u trong b\u1ed9 nh\u1edb cache.&nbsp;Sau \u0111\u00f3, y\u00eau c\u1ea7u x\u00f3a c\u0169ng s\u1ebd \u0111\u01b0\u1ee3c x\u1eed l\u00fd tr\u00ean CDN v\u00e0 m\u1ed9t t\u1ec7p m\u1edbi s\u1ebd \u0111\u01b0\u1ee3c t\u00ecm n\u1ea1p l\u1ea1i t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n<p>Khi x\u00f3a ho\u00e0n to\u00e0n b\u1ed9 nh\u1edb cache cho b\u1ed9 \u0111\u1ec7m Pull Zone, Perma-Cache s\u1ebd kh\u00f4ng b\u1ecb x\u00f3a.&nbsp;Thay v\u00e0o \u0111\u00f3, h\u1ec7 th\u1ed1ng chuy\u1ec3n sang c\u1ea5u tr\u00fac th\u01b0 m\u1ee5c m\u1edbi trong v\u00f9ng l\u01b0u tr\u1eef.&nbsp;Trong tr\u01b0\u1eddng h\u1ee3p x\u00f3a to\u00e0n b\u1ed9, b\u1ea1n s\u1ebd c\u1ea7n x\u00f3a th\u1ee7 c\u00f4ng c\u00e1c th\u01b0 m\u1ee5c c\u1ee7a b\u1ed9 nh\u1edb \u0111\u1ec7m c\u0169.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Header_Tieu_de\"><\/span>Header \/ Ti\u00eau \u0111\u1ec1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Perma-Cache c\u0169ng s\u1ebd th\u00eam m\u1ed9t b\u1ed9 ti\u00eau \u0111\u1ec1 b\u1ed9 nh\u1edb \u0111\u1ec7m duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Perma-Cache, c\u00f3 th\u1ec3 l\u00e0 HIT ho\u1eb7c MISS.&nbsp;N\u1ebfu t\u1ec7p \u0111\u01b0\u1ee3c t\u1ea3i th\u00e0nh c\u00f4ng t\u1eeb h\u1ec7 th\u1ed1ng Perma-Cache, ti\u00eau \u0111\u1ec1 s\u1ebd \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 d\u01b0\u1edbi d\u1ea1ng HIT.&nbsp;N\u1ebfu Perma-Cache chuy\u1ec3n y\u00eau c\u1ea7u \u0111\u1ebfn hosting g\u1ed1c tr\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y s\u1ebd xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng MISS.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CDN_Cache\"><\/span>CDN Cache<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Trong tr\u01b0\u1eddng h\u1ee3p t\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache tr\u00ean CDN, y\u00eau c\u1ea7u s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn h\u1ec7 th\u1ed1ng Perma-Cache cho \u0111\u1ebfn khi x\u1ea3y ra MISS cache.&nbsp;\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu Perma-Cache \u0111\u01b0\u1ee3c b\u1eadt tr\u00ean m\u1ed9t v\u00f9ng (zone) hi\u1ec7n c\u00f3, c\u00f3 th\u1ec3 m\u1ea5t m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 Perma-Cache l\u1ea5p \u0111\u1ea7y d\u1eef li\u1ec7u. B\u1ea1n kh\u00f4ng c\u1ea7n lo l\u1eafng, v\u00ec&nbsp;\u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 CDN \u0111\u00e3 l\u00e0m r\u1ea5t t\u1ed1t vi\u1ec7c l\u01b0u gi\u1eef c\u00e1c t\u1ec7p \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache c\u1ee7a ri\u00eang n\u00f3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Perma-Cache l\u00e0 m\u1ed9t l\u1edbp cache v\u0129nh vi\u1ec5n th\u1ee9 c\u1ea5p (h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn t\u1eeb v\u0129nh vi\u1ec5n), n\u00f3 n\u1eb1m gi\u1eefa CDN v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n.\u00a0Khi m\u1ed9t y\u00eau c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache tr\u00ean CDN v\u00e0 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c, tr\u01b0\u1edbc ti\u00ean CDN s\u1ebd ki\u1ec3m tra v\u1edbi b\u1ed9 l\u01b0u tr\u1eef &hellip;<\/p>\n","protected":false},"author":1,"featured_media":24790,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[248,249],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u00ednh n\u0103ng Perma-Cache c\u1ee7a BunnyCDN c\u00f3 t\u00e1c d\u1ee5ng g\u00ec? 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