{"id":150,"date":"2022-02-10T13:02:28","date_gmt":"2022-02-10T13:02:28","guid":{"rendered":"https:\/\/xoong.net\/?p=150"},"modified":"2022-08-09T01:30:24","modified_gmt":"2022-08-08T18:30:24","slug":"hieu-nham-perma-cache","status":"publish","type":"post","link":"https:\/\/kiencang.net\/hieu-nham-perma-cache\/","title":{"rendered":"Tr\u1eddi, h\u00f3a ra t\u00f4i l\u00e2u nay v\u1eabn hi\u1ec3u nh\u1ea7m t\u00ednh n\u0103ng perma-cache c\u1ee7a BunnyCDN m\u00e0 kh\u00f4ng bi\u1ebft!"},"content":{"rendered":"\n<p>Tr\u01b0\u1edbc t\u00f4i c\u00f3 t\u00ecm hi\u1ec3u <a href=\"https:\/\/kiencang.net\/perma-cache-bunnycdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u00ednh n\u0103ng perma-cache c\u1ee7a BunnyCDN<\/a>, v\u00e0 c\u1ee9 \u0111inh ninh r\u1eb1ng n\u00f3 ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng ki\u1ec3u thay th\u1ebf cho c\u00e1c n\u00fat CDN tr\u00ean to\u00e0n c\u1ea7u, v\u1edbi \u01b0u \u0111i\u1ec3m t\u0103ng th\u1eddi gian l\u01b0u tr\u1eef c\u00e1c file t\u0129nh, v\u00e0 b\u00f9 l\u1ea1i ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m hi\u1ec7n di\u1ec7n quan tr\u1ecdng tr\u00ean to\u00e0n c\u1ea7u m\u00e0 th\u00f4i. Wow, nghe h\u1ee3p l\u00fd nh\u01b0ng \u0111\u00f3 l\u00e0 hi\u1ec3u nh\u1ea7m tai h\u1ea1i!<\/p>\n\n\n\n<p>M\u00e0 r\u00f5 r\u00e0ng b\u00e0i vi\u1ebft \u0111\u00f3 \u0111\u00e3 n\u00f3i c\u1ee5 th\u1ec3 ch\u1ee9 kh\u00f4ng \u1ee1m \u1edd g\u00ec, nh\u01b0ng c\u00f3 th\u1ec3 v\u1edbi nh\u1eefng m\u1eb7c \u0111\u1ecbnh s\u1eb5n trong \u0111\u1ea7u m\u00e0 t\u00f4i hi\u1ec3u sai.<\/p>\n\n\n\n<p>Ch\u00ednh x\u00e1c th\u00ec perma-cache l\u00e0 n\u01a1i thay th\u1ebf cho hosting g\u1ed1c c\u1ee7a b\u1ea1n \u0111\u1ec3 l\u01b0u m\u00e3i m\u00e3i c\u00e1c file. B\u1ea1n s\u1ebd th\u1ea5y hi\u1ec7u nghi\u1ec7m c\u1ee7a perma-cache c\u00e0ng l\u1edbn khi ng\u01b0\u1eddi duy\u1ec7t web c\u00e0ng xa hosting g\u1ed1c.<\/p>\n\n\n\n<p>H\u1ec7 th\u1ed1ng c\u00e1c \u0111i\u1ec3m n\u00fat CDN \u0111\u1ec3 t\u1ed1i \u01b0u chi ph\u00ed l\u01b0u tr\u1eef s\u1ebd kh\u00f4ng l\u01b0u m\u00e3i m\u00e3i c\u00e1c file c\u1ee7a b\u1ea1n tr\u00ean h\u1ec7 th\u1ed1ng c\u1ee7a n\u00f3 (v\u00ec sao \u01b0?, v\u00ec n\u00f3 c\u00f3 th\u1ec3 c\u00f3 g\u1ea7n tr\u0103m PoP tr\u00ean to\u00e0n c\u1ea7u v\u1edbi c\u00e1c \u1ed5 SSD \u0111\u1eaft ti\u1ec1n), m\u00e0 s\u1ebd \u0111\u1eb7t ra m\u1ed9t gi\u1edbi h\u1ea1n nh\u1ea5t \u0111\u1ecbnh, \u0111\u1ec3 ch\u1ec9 l\u01b0u c\u00e1c file th\u01b0\u1eddng \u0111\u01b0\u1ee3c truy c\u1eadp. V\u1edbi nh\u1eefng file kh\u00f4ng c\u00f3 s\u1eb5n tr\u00ean n\u00fat CDN- khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp th\u00ec n\u00fat CDN \u0111\u00f3 s\u1ebd ph\u1ea3i quay ra d\u1eef li\u1ec7u g\u1ed1c [n\u1eb1m \u1edf hosting g\u1ed1c] c\u1ee7a b\u1ea1n \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u (c\u00e1i n\u00e0y c\u00f2n g\u1ecdi l\u00e0 <a href=\"https:\/\/kiencang.net\/cache-hit-ratio\/\" target=\"_blank\" rel=\"noreferrer noopener\">cache miss<\/a>&#8211; t\u1ee9c l\u00e0 kh\u00f4ng c\u00f3 s\u1eb5n d\u1eef li\u1ec7u cache \u0111\u1ec3 \u0111\u01b0a lu\u00f4n cho ng\u01b0\u1eddi d\u00f9ng). \u0110i\u1ec1u n\u00e0y t\u1ea1o ra 2 v\u1ea5n \u0111\u1ec1:<\/p>\n\n\n\n<ul><li>N\u00f3 ch\u1eafc ch\u1eafn l\u00e0m t\u0103ng t\u1ea3i cho hosting g\u1ed1c c\u1ee7a b\u1ea1n.<\/li><li>Hosting g\u1ed1c c\u1ee7a b\u1ea1n c\u00e0ng xa ng\u01b0\u1eddi d\u00f9ng web, t\u1ed1c \u0111\u1ed9 trang c\u1ee7a b\u1ea1n c\u00e0ng ch\u1eadm, d\u00f9 r\u1eb1ng c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a CDN th\u01b0\u1eddng c\u00f3 tuy\u1ebfn l\u1ea5y d\u1eef li\u1ec7u nhanh h\u01a1n th\u00f4ng th\u01b0\u1eddng (so v\u1edbi khi ng\u01b0\u1eddi d\u00f9ng duy\u1ec7t tr\u1ef1c ti\u1ebfp t\u1eeb hosting g\u1ed1c).<\/li><\/ul>\n\n\n\n<p>Perma-cache c\u00f3 nhi\u1ec7m v\u1ee5 gi\u1ea3i quy\u1ebft c\u00e1c kh\u00f3 kh\u0103n n\u00e0y. V\u1edbi vi\u1ec7c xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c \u0111i\u1ec3m n\u00fat internet quan tr\u1ecdng tr\u00ean to\u00e0n c\u1ea7u, do v\u1eady t\u1ed1c \u0111\u1ed9 truy c\u1eadp d\u1eef li\u1ec7u gi\u1eefa CDN v\u00e0 \u0111i\u1ec3m n\u00fat perma-cache l\u00e0 nhanh h\u01a1n nhi\u1ec1u gi\u1eefa CDN v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a b\u1ea1n. V\u00ec v\u1eady h\u00e3y lu\u00f4n b\u1eadt perma-cache, n\u00f3 ch\u1eafc ch\u1eafn gi\u00fap b\u1ea1n t\u0103ng t\u1ed1c website l\u00ean \u0111\u00e1ng k\u1ec3- \u0111i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang v\u1edbi c\u00e1c trang c\u00f3 hosting g\u1ed1c \u1edf xa Vi\u1ec7t Nam (t\u1ed5ng qu\u00e1t l\u00e0 xa ng\u01b0\u1eddi d\u00f9ng duy\u1ec7t web c\u1ee7a b\u1ea1n).<\/p>\n\n\n\n<p> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u01b0\u1edbc t\u00f4i c\u00f3 t\u00ecm hi\u1ec3u t\u00ednh n\u0103ng perma-cache c\u1ee7a BunnyCDN, v\u00e0 c\u1ee9 \u0111inh ninh r\u1eb1ng n\u00f3 ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng ki\u1ec3u thay th\u1ebf cho c\u00e1c n\u00fat CDN tr\u00ean to\u00e0n c\u1ea7u, v\u1edbi \u01b0u \u0111i\u1ec3m t\u0103ng th\u1eddi gian l\u01b0u tr\u1eef c\u00e1c file t\u0129nh, v\u00e0 b\u00f9 l\u1ea1i ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m hi\u1ec7n di\u1ec7n quan tr\u1ecdng tr\u00ean to\u00e0n c\u1ea7u &hellip;<\/p>\n","protected":false},"author":1,"featured_media":22540,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[248],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tr\u1eddi, h\u00f3a ra t\u00f4i l\u00e2u nay v\u1eabn hi\u1ec3u nh\u1ea7m t\u00ednh n\u0103ng perma-cache c\u1ee7a BunnyCDN m\u00e0 kh\u00f4ng bi\u1ebft! 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