{"id":11683,"date":"2022-01-12T09:24:00","date_gmt":"2022-01-12T02:24:00","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11683"},"modified":"2022-08-06T11:22:03","modified_gmt":"2022-08-06T04:22:03","slug":"bo-nho-dem-trinh-duyet","status":"publish","type":"post","link":"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/","title":{"rendered":"T\u1eadn d\u1ee5ng cache tr\u00ecnh duy\u1ec7t: K\u1ef9 thu\u1eadt t\u0103ng t\u1ed1c website \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3"},"content":{"rendered":"\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-6577d61cc0004\" ><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-6577d61cc0004\"  type=\"checkbox\" id=\"item-6577d61cc0004\"><\/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\/bo-nho-dem-trinh-duyet\/#1_Cache_phia_trinh_duyet_la_gi\" title=\"#1. Cache ph\u00eda tr\u00ecnh duy\u1ec7t l\u00e0 g\u00ec?\">#1. Cache ph\u00eda tr\u00ecnh duy\u1ec7t l\u00e0 g\u00ec?<\/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\/bo-nho-dem-trinh-duyet\/#2_Tan_dung_bo_nho_dem_trinh_duyet_nhu_the_nao\" title=\"#2. T\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t nh\u01b0 th\u1ebf n\u00e0o\">#2. T\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t nh\u01b0 th\u1ebf n\u00e0o<\/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\/bo-nho-dem-trinh-duyet\/#3_Thay_doi_yeu_cau_tieu_de_tai_nguyen_cua_ban_de_su_dung_bo_nho_dem\" title=\"#3. Thay \u0111\u1ed5i y\u00eau c\u1ea7u ti\u00eau \u0111\u1ec1 t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n \u0111\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m\">#3. Thay \u0111\u1ed5i y\u00eau c\u1ea7u ti\u00eau \u0111\u1ec1 t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n \u0111\u1ec3 s\u1eed d\u1ee5ng 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-4\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#4_Thiet_lap_bo_nho_dem_bang_htaccess\" title=\"#4. Thi\u1ebft l\u1eadp b\u1ed9 nh\u1edb \u0111\u1ec7m b\u1eb1ng .htaccess\">#4. Thi\u1ebft l\u1eadp b\u1ed9 nh\u1edb \u0111\u1ec7m b\u1eb1ng .htaccess<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#5_Lam_the_nao_de_thiet_lap_thoi_gian_luu_tru_bo_nho_dem_khac_nhau_cho_cac_tep_khac_nhau\" title=\"#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thi\u1ebft l\u1eadp th\u1eddi gian l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m kh\u00e1c nhau cho c\u00e1c t\u1ec7p kh\u00e1c nhau\">#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thi\u1ebft l\u1eadp th\u1eddi gian l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m kh\u00e1c nhau cho c\u00e1c t\u1ec7p kh\u00e1c nhau<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#6_Cac_phuong_thuc_cache_thay_the_van_su_dung_htaccess\" title=\"#6. C\u00e1c ph\u01b0\u01a1ng th\u1ee9c cache thay th\u1ebf (v\u1eabn s\u1eed d\u1ee5ng .htaccess)\">#6. C\u00e1c ph\u01b0\u01a1ng th\u1ee9c cache thay th\u1ebf (v\u1eabn s\u1eed d\u1ee5ng .htaccess)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#7_Cache-Control\" title=\"#7. Cache-Control\">#7. Cache-Control<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#8_Cach_cache-control_lam_viec\" title=\"#8. C\u00e1ch cache-control l\u00e0m vi\u1ec7c\">#8. C\u00e1ch cache-control l\u00e0m vi\u1ec7c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#9_Cac_van_de_thuong_gap_voi_bo_nho_dem\" title=\"#9. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p v\u1edbi b\u1ed9 nh\u1edb \u0111\u1ec7m\">#9. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p v\u1edbi 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-10\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/#10_URL_fingerprinting\" title=\"#10. URL fingerprinting\">#10. URL fingerprinting<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"cache-phia-trinh-duy\u1ec7t-la-gi\"><span class=\"ez-toc-section\" id=\"1_Cache_phia_trinh_duyet_la_gi\"><\/span>#1. Cache ph\u00eda tr\u00ecnh duy\u1ec7t l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul><li>Tr\u00ecnh duy\u1ec7t l\u01b0u gi\u1eef c\u00e1c file t\u00e0i nguy\u00ean c\u1ee7a trang web trong b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 c\u1ee7a m\u00e1y t\u00ednh \/ thi\u1ebft b\u1ecb di \u0111\u1ed9ng khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m m\u1ed9t trang web.<\/li><li>&#8220;T\u1eadn d\u1ee5ng&#8221; b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t (browser cache) l\u00e0 khi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web \u0111\u01b0a ra c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3 cho tr\u00ecnh duy\u1ec7t bi\u1ebft n\u00ean x\u1eed l\u00fd c\u00e1c t\u00e0i nguy\u00ean tr\u00ean website c\u1ee7a h\u1ecd nh\u01b0 th\u1ebf n\u00e0o.<\/li><\/ul>\n\n\n\n<p>Khi m\u1ed9t tr\u00ecnh duy\u1ec7t web hi\u1ec3n th\u1ecb trang web c\u1ee7a b\u1ea1n, n\u00f3 s\u1ebd t\u1ea3i m\u1ed9t s\u1ed1 th\u1ee9 nh\u01b0 logo, file CSS v\u00e0 c\u00e1c t\u00e0i nguy\u00ean kh\u00e1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/bo-nho-dem-trinh-duyet.png\" alt=\"b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t\" class=\"wp-image-11684\"\/><\/figure><\/div>\n\n\n<p>\u0110i\u1ec1u m\u00e0 b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t l\u00e0m l\u00e0 &#8220;ghi nh\u1edb&#8221; c\u00e1c t\u00e0i nguy\u00ean m\u00e0 tr\u00ecnh duy\u1ec7t <em>\u0111\u00e3 t\u1eebng t\u1ea3i v\u1ec1 tr\u01b0\u1edbc \u0111\u00f3<\/em>. Khi ng\u01b0\u1eddi duy\u1ec7t web gh\u00e9 th\u0103m m\u1ed9t trang kh\u00e1c tr\u00ean website c\u1ee7a b\u1ea1n, th\u00ec logo, file CSS, v\u00e2n v\u00e2n kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ea3i l\u1ea1i l\u1ea7n n\u1eefa, b\u1edfi v\u00ec tr\u00ecnh duy\u1ec7t \u0111\u00e3 &#8220;ghi nh\u1edb&#8221; ch\u00fang r\u1ed3i (l\u01b0u tr\u1eef). \u0110\u00e2y l\u00e0 l\u00fd do <a href=\"https:\/\/kiencang.net\/lan-ghe-tham-website-dau-tien\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u1ea7n truy c\u1eadp \u0111\u1ea7u ti\u00ean v\u00e0o m\u1ed9t trang web n\u00e0o \u0111\u00f3 th\u01b0\u1eddng ch\u1eadm h\u01a1n<\/a> \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c l\u1ea7n truy c\u1eadp ti\u1ebfp theo.<\/p>\n\n\n\n<p>Khi b\u1ea1n t\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t, c\u00e1c t\u00e0i nguy\u00ean c\u1ee7a trang web s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m. C\u00e1c <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">trang web c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c t\u1ea3i nhanh h\u01a1n r\u1ea5t nhi\u1ec1u<\/a> khi kh\u00e1ch ti\u1ebfp t\u1ee5c truy c\u1eadp website, v\u00ec c\u00e1c trang <em>c\u00f9ng chia s\u1ebb m\u1ed9t s\u1ed1 t\u00e0i nguy\u00ean h\u1ec7t nhau<\/em>.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n \u0111\u00e3 <a href=\"https:\/\/kiencang.net\/huong-dan-su-dung-pingdom\/\" target=\"_blank\" rel=\"noreferrer noopener\">ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 c\u1ee7a website (v\u00ed d\u1ee5 b\u1eb1ng Pingdom)<\/a> v\u00e0 th\u1ea5y l\u00e0 trang v\u1eabn ch\u01b0a t\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t th\u00ec b\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch l\u00e0m chi ti\u1ebft.<\/p>\n\n\n\n<p>P\/S: B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra v\u1ea5n \u0111\u1ec1 b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 kh\u00e1c nh\u01b0 <a href=\"https:\/\/kiencang.net\/tang-toc-web-pagespeed-insights\/\" target=\"_blank\" rel=\"noreferrer noopener\">Google PageSpeed Insights<\/a>. <\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"t\u1eadn-d\u1ee5ng-b\u1ed9-nh\u1edb-d\u1ec7m-trinh-duy\u1ec7t-nh\u01b0-th\u1ebf-nao\"><span class=\"ez-toc-section\" id=\"2_Tan_dung_bo_nho_dem_trinh_duyet_nhu_the_nao\"><\/span>#2. T\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t nh\u01b0 th\u1ebf n\u00e0o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol><li><a href=\"https:\/\/kiencang.net\/tim-hieu-http-caching\/\" target=\"_blank\" rel=\"noreferrer noopener\">Thay \u0111\u1ed5i ti\u00eau \u0111\u1ec1 (header) y\u00eau c\u1ea7u c\u00e1c t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n<\/a> \u0111\u1ec3 t\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m;<\/li><li>T\u1ed1i \u01b0u h\u00f3a chi\u1ebfn l\u01b0\u1ee3c cache (b\u1ed9 nh\u1edb \u0111\u1ec7m) c\u1ee7a b\u1ea1n.<\/li><\/ol>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"thay-d\u1ed5i-yeu-c\u1ea7u-tieu-d\u1ec1-tai-nguyen-c\u1ee7a-b\u1ea1n-d\u1ec3-s\u1eed-d\u1ee5ng-b\u1ed9-nh\u1edb-d\u1ec7m\"><span class=\"ez-toc-section\" id=\"3_Thay_doi_yeu_cau_tieu_de_tai_nguyen_cua_ban_de_su_dung_bo_nho_dem\"><\/span>#3. Thay \u0111\u1ed5i y\u00eau c\u1ea7u ti\u00eau \u0111\u1ec1 t\u00e0i nguy\u00ean c\u1ee7a b\u1ea1n \u0111\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb \u0111\u1ec7m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V\u1edbi \u0111a s\u1ed1 m\u1ecdi ng\u01b0\u1eddi, c\u00e1ch \u0111\u1ec3 b\u1eadt b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t l\u00e0 th\u00eam m\u1ed9t s\u1ed1 \u0111o\u1ea1n m\u00e3 v\u00e0o file g\u1ecdi l\u00e0 .<em>htaccess<\/em> tr\u00ean m\u00e1y ch\u1ee7 web.<\/p>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 l\u00e0m \u0111i\u1ec1u \u0111\u00f3 th\u00f4ng qua file manger (v\u00ed d\u1ee5 nh\u01b0 FileZilla ho\u1eb7c b\u1ea5t k\u1ef3 c\u00f4ng c\u1ee5 n\u00e0o \u0111\u1ec3 b\u1ea1n th\u00eam, t\u1ea3i file) tr\u00ean hosting c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p><strong>P\/S<\/strong>: n\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng WordPress, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 bi\u1ebft <a href=\"https:\/\/kiencang.net\/sua-htaccess-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1ch ch\u1ec9nh s\u1eeda, v\u00e0 h\u1ea1n ch\u1ebf l\u1ed7i khi l\u00e0m vi\u1ec7c v\u1edbi .htaccess<\/a>: <\/p>\n\n\n\n<p>File .htaccess \u0111i\u1ec1u khi\u1ec3n r\u1ea5t nhi\u1ec1u th\u1ee9 quan tr\u1ecdng tr\u00ean website c\u1ee7a b\u1ea1n, do v\u1eady b\u1ea1n c\u1ea7n t\u00ecm hi\u1ec3u m\u1ed9t ch\u00fat v\u1ec1 n\u00f3 tr\u01b0\u1edbc khi ch\u1ec9nh s\u1eeda. N\u1ebfu thao t\u00e1c l\u1ed7i tr\u00ean .htaccess, trang web c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"thi\u1ebft-l\u1eadp-b\u1ed9-nh\u1edb-d\u1ec7m-b\u1eb1ng-htaccess\"><span class=\"ez-toc-section\" id=\"4_Thiet_lap_bo_nho_dem_bang_htaccess\"><\/span>#4. Thi\u1ebft l\u1eadp b\u1ed9 nh\u1edb \u0111\u1ec7m b\u1eb1ng .htaccess<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110o\u1ea1n m\u00e3 b\u00ean d\u01b0\u1edbi n\u00f3i v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t r\u1eb1ng n\u00f3 n\u00ean l\u01b0u tr\u1eef v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m nh\u1eefng t\u00e0i nguy\u00ean n\u00e0o v\u00e0 &#8220;nh\u1edb&#8221; ch\u00fang trong kho\u1ea3ng th\u1eddi gian bao l\u00e2u. N\u00f3 <strong>ph\u1ea3i \u0111\u01b0\u1ee3c th\u00eam v\u00e0o \u1edf v\u1ecb tr\u00ed tr\u00ean c\u00f9ng<\/strong> c\u1ee7a file .htaccess<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>## EXPIRES CACHING ##\n&lt;IfModule mod_expires.c&gt;\nExpiresActive On\nExpiresByType image\/jpg \"access 1 year\"\nExpiresByType image\/jpeg \"access 1 year\"\nExpiresByType image\/gif \"access 1 year\"\nExpiresByType image\/png \"access 1 year\"\nExpiresByType text\/css \"access 1 month\"\nExpiresByType text\/html \"access 1 month\"\nExpiresByType application\/pdf \"access 1 month\"\nExpiresByType text\/x-javascript \"access 1 month\"\nExpiresByType application\/x-shockwave-flash \"access 1 month\"\nExpiresByType image\/x-icon \"access 1 year\"\nExpiresDefault \"access 1 month\"\n&lt;\/IfModule&gt;\n## EXPIRES CACHING ##<\/code><\/pre>\n\n\n\n<p>L\u01b0u file .htaccess v\u00e0 t\u1ea3i l\u1ea1i trang web 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\" id=\"lam-th\u1ebf-nao-d\u1ec3-thi\u1ebft-l\u1eadp-th\u1eddi-gian-l\u01b0u-tr\u1eef-b\u1ed9-nh\u1edb-d\u1ec7m-khac-nhau-cho-cac-t\u1ec7p-khac-nhau\"><span class=\"ez-toc-section\" id=\"5_Lam_the_nao_de_thiet_lap_thoi_gian_luu_tru_bo_nho_dem_khac_nhau_cho_cac_tep_khac_nhau\"><\/span>#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thi\u1ebft l\u1eadp th\u1eddi gian l\u01b0u tr\u1eef b\u1ed9 nh\u1edb \u0111\u1ec7m kh\u00e1c nhau cho c\u00e1c t\u1ec7p kh\u00e1c nhau<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y trong \u0111o\u1ea1n m\u00e3 tr\u00ean c\u00e1c kho\u1ea3ng th\u1eddi gian nh\u01b0 &#8220;1 year\/1 n\u0103m&#8221; ho\u1eb7c &#8220;1 month\/1 th\u00e1ng&#8221;, v\u00e0 th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi c\u00e1c \u0111\u1ecbnh d\u1ea1ng file, v\u00ed d\u1ee5 \u0111o\u1ea1n m\u00e3 tr\u00ean n\u00f3i r\u1eb1ng file \u0111\u1ecbnh d\u1ea1ng .jpg (\u1ea3nh) ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb \u0111\u1ec7m trong v\u00f2ng m\u1ed9t n\u0103m.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n mu\u1ed1n thay \u0111\u1ed5i \u0111i\u1ec1u \u0111\u00f3, ch\u1eb3ng h\u1ea1n b\u1ea1n mu\u1ed1n \u1ea3nh ch\u1ec9 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong m\u1ed9t th\u00e1ng th\u00f4i, th\u00ec c\u00e1ch \u0111\u01a1n gi\u1ea3n l\u00e0 thay th\u1ebf &#8220;1 year&#8221; b\u1eb1ng &#8220;1 month&#8221;. C\u00e1c gi\u00e1 tr\u1ecb trong \u0111o\u1ea1n m\u00e3 tr\u00ean \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a kh\u00e1 \u1ed5n v\u00e0 th\u00edch h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c trang web v\u00e0 blog.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cac-ph\u01b0\u01a1ng-th\u1ee9c-cache-thay-th\u1ebf-v\u1eabn-s\u1eed-d\u1ee5ng-htaccess\"><span class=\"ez-toc-section\" id=\"6_Cac_phuong_thuc_cache_thay_the_van_su_dung_htaccess\"><\/span>#6. C\u00e1c ph\u01b0\u01a1ng th\u1ee9c cache thay th\u1ebf (v\u1eabn s\u1eed d\u1ee5ng .htaccess)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ph\u01b0\u01a1ng th\u1ee9c tr\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;Expires\/H\u1ebft h\u1ea1n&#8221; v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c cho h\u1ea7u h\u1ebft website s\u1eed d\u1ee5ng .htaccess, v\u00e0 nh\u1eefng ai m\u1edbi l\u00e0m quen v\u1edbi b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1ch n\u00e0y.<\/p>\n\n\n\n<p>Sau khi b\u1ea1n \u0111\u00e3 th\u00e0nh th\u1ea1o v\u1ec1 b\u1ed9 nh\u1edb \u0111\u1ec7m, b\u1ea1n c\u00f3 th\u1ec3 mu\u1ed1n th\u1eed Cache-Control, m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c cache cho ph\u00e9p ch\u00fang ta c\u00f3 nhi\u1ec1u t\u00f9y ch\u1ecdn h\u01a1n (v\u00e0 n\u00f3 c\u0169ng l\u00e0 c\u00e1ch ti\u1ebfp c\u1eadn t\u1ed1t h\u01a1n, hi\u1ec7n \u0111\u1ea1i h\u01a1n).<\/p>\n\n\n\n<p>Ngo\u00e0i ra c\u0169ng c\u00f3 th\u1ec3 x\u1ea3y ra tr\u01b0\u1eddng h\u1ee3p ph\u01b0\u01a1ng th\u1ee9c expires kh\u00f4ng l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n, trong tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 mu\u1ed1n th\u1eed <a href=\"https:\/\/kiencang.net\/tim-hieu-http-caching\/\" target=\"_blank\" rel=\"noreferrer noopener\">ph\u01b0\u01a1ng ph\u00e1p caching b\u1eb1ng Cache-Control<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cache-control\"><span class=\"ez-toc-section\" id=\"7_Cache-Control\"><\/span>#7. Cache-Control<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Cache-Control cho ph\u00e9p ch\u00fang ta c\u00f3 nhi\u1ec1u \u0111i\u1ec1u ch\u1ec9nh h\u01a1n m\u1ed9t ch\u00fat v\u1edbi b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ecnh duy\u1ec7t v\u00e0 nhi\u1ec1u ng\u01b0\u1eddi c\u00f2n th\u1ea5y d\u00f9ng n\u00f3 d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5 v\u1ec1 c\u00e1ch d\u00f9ng trong file .htaccess:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># 1 Month for most static assets\n&lt;filesMatch \".(css|jpg|jpeg|png|gif|js|ico)$\"&gt;\nHeader set Cache-Control \"max-age=2592000, public\"\n&lt;\/filesMatch&gt;<\/code><\/pre>\n\n\n\n<p>\u0110o\u1ea1n m\u00e3 tr\u00ean thi\u1ebft l\u1eadp ti\u00eau \u0111\u1ec1 ki\u1ec3m so\u00e1t b\u1ed9 nh\u1edb \u0111\u1ec7m (cache control) ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i file.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cach-cache-control-lam-vi\u1ec7c\"><span class=\"ez-toc-section\" id=\"8_Cach_cache-control_lam_viec\"><\/span>#8. C\u00e1ch cache-control l\u00e0m vi\u1ec7c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ch\u00fang ta c\u00f9ng ph\u00e2n t\u00edch t\u1eebng d\u00f2ng code:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># 1 Month for most static assets<\/code><\/pre>\n\n\n\n<p>D\u00f2ng tr\u00ean \u0111\u01b0\u1ee3c d\u00f9ng cho m\u1ee5c \u0111\u00edch ch\u00fa th\u00edch. N\u00f3 kh\u00f4ng l\u00e0m b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec c\u1ea3, ngo\u1ea1i tr\u1eeb vi\u1ec7c ch\u00fa th\u00edch cho ch\u00fang ta bi\u1ebft \u0111o\u1ea1n m\u00e3 ngay b\u00ean d\u01b0\u1edbi d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec. File .htaccess b\u1ecf qua nh\u1eefng d\u00f2ng b\u1eaft \u0111\u1ea7u b\u1eb1ng k\u00fd t\u1ef1 #. C\u00e1c ch\u00fa th\u00edch \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch d\u00f9ng v\u00ec b\u1ea1n c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u \u0111o\u1ea1n m\u00e3 kh\u00e1c nhau tr\u00ean file khi m\u00e0 ki\u1ebfn th\u1ee9c ho\u1eb7c nhu c\u1ea7u c\u1ee7a b\u1ea1n t\u0103ng th\u00eam.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;filesMatch \".(css|jpg|jpeg|png|gif|js|ico)$\"&gt;<\/code><\/pre>\n\n\n\n<p>D\u00f2ng m\u00e3 tr\u00ean n\u00f3i r\u1eb1ng &#8220;n\u1ebfu file l\u00e0 m\u1ed9t trong nh\u1eefng file n\u00e0y, th\u00ec ch\u00fang ta s\u1ebd ph\u1ea3i l\u00e0m \u0111i\u1ec1u g\u00ec \u0111\u00f3 v\u1edbi n\u00f3&#8230;&#8221;<\/p>\n\n\n\n<p>Ph\u1ea7n quan tr\u1ecdng c\u1ee7a d\u00f2ng tr\u00ean c\u1ea7n ph\u1ea3i \u0111\u1ec3 \u00fd l\u00e0 c\u00f3 c\u00e1c \u0111\u1ecbnh d\u1ea1ng file kh\u00e1c nhau \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea (css, js, jpeg, png, v\u00e2n v\u00e2n) v\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn l\u01b0u tr\u1eef \u0111\u1ec7m theo sau s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho nh\u1eefng \u0111\u1ecbnh d\u1ea1ng file \u0111\u00f3. <\/p>\n\n\n\n<p>Th\u00ed d\u1ee5 n\u1ebfu b\u1ea1n kh\u00f4ng mu\u1ed1n file \u0111\u1ecbnh d\u1ea1ng jpg \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m cho kho\u1ea3ng th\u1eddi gian n\u00e0y b\u1ea1n c\u00f3 th\u1ec3 x\u00f3a &#8220;jpg&#8221; kh\u1ecfi d\u00f2ng, ho\u1eb7c n\u1ebfu b\u1ea1n mu\u1ed1n th\u00eam html v\u00e0o \u0111\u00e2y, b\u1ea1n ch\u1ec9 c\u1ea7n th\u00eam &#8220;html&#8221; v\u00e0o d\u00f2ng n\u00e0y l\u00e0 xong.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Header set Cache-Control \"max-age=2592000, public\"<\/code><\/pre>\n\n\n\n<p>D\u00f2ng tr\u00ean l\u00e0 n\u01a1i m\u00e0 c\u00e1c ti\u00eau \u0111\u1ec1 th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c cung c\u1ea5p.<\/p>\n\n\n\n<ul><li>Ph\u1ea7n &#8220;Header set Cache-Control&#8221; \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thi\u1ebft l\u1eadp header\/ti\u00eau \u0111\u1ec1;<\/li><li>Ph\u1ea7n &#8220;max-age=2592000&#8221; \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ec9 ra kho\u1ea3ng th\u1eddi gian n\u00f3 n\u00ean \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef (t\u00ednh theo gi\u00e2y). Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y ch\u00fang ta l\u01b0u b\u1ed9 nh\u1edb \u0111\u1ec7m trong v\u00f2ng m\u1ed9t th\u00e1ng &#8211; c\u00e1i c\u00f3 gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng l\u00e0 &#8220;2592000&#8221; gi\u00e2y;<\/li><li>Ph\u1ea7n &#8220;public&#8221; \u0111\u1ec3 n\u00f3i r\u1eb1ng n\u00f3 l\u00e0 c\u00f4ng khai (\u0111i\u1ec1u n\u00e0y t\u1ed1t trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n mu\u1ed1n n\u00f3 \u0111\u01b0\u1ee3c cache).<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;\/filesMatch&gt;<\/code><\/pre>\n\n\n\n<p>D\u00f2ng tr\u00ean l\u00e0 l\u1ec7nh \u0111\u00f3ng v\u00e0 k\u1ebft th\u00fac kh\u1ed1i m\u00e3.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cac-v\u1ea5n-d\u1ec1-th\u01b0\u1eddng-g\u1eb7p-v\u1edbi-b\u1ed9-nh\u1edb-d\u1ec7m\"><span class=\"ez-toc-section\" id=\"9_Cac_van_de_thuong_gap_voi_bo_nho_dem\"><\/span>#9. C\u00e1c v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p v\u1edbi b\u1ed9 nh\u1edb \u0111\u1ec7m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>N\u1ebfu b\u1ea1n thi\u1ebft l\u1eadp b\u1ed9 nh\u1edb \u0111\u1ec7m cho html v\u00e0 \u1ea3nh trong v\u00f2ng m\u1ed9t n\u0103m ho\u1eb7c l\u00e2u h\u01a1n, th\u00ec b\u1ea1n c\u1ea7n ph\u1ea3i l\u01b0u \u00fd r\u1eb1ng \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu b\u1ea1n th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i cho trang c\u1ee7a b\u1ea1n n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ea5y b\u1edfi ng\u01b0\u1eddi d\u00f9ng. <\/p>\n\n\n\n<p>\u0110i\u1ec1u \u0111\u00f3 x\u1ea3y ra l\u00e0 v\u00ec n\u1ebfu ng\u01b0\u1eddi d\u00f9ng t\u1eebng xem trang \u0111\u00f3, th\u00ec khi h\u1ecd v\u00e0o l\u1ea1i, tr\u00ecnh duy\u1ec7t s\u1ebd \u0111i t\u00ecm trang c\u0169 \u0111ang cache ch\u1ee9 kh\u00f4ng ph\u1ea3i trang m\u1edbi nh\u1ea5t m\u00e0 b\u1ea1n m\u1edbi c\u1eadp nh\u1eadt. N\u1ebfu b\u1ea1n c\u00f3 file m\u00e0 b\u1ea1n thi tho\u1ea3ng tinh ch\u1ec9nh (v\u00ed d\u1ee5 m\u1ed9t file CSS n\u00e0o \u0111\u1ea5y), b\u1ea1n c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 cache b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng URL fingerprinting.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"url-fingerprinting\"><span class=\"ez-toc-section\" id=\"10_URL_fingerprinting\"><\/span>#10. URL fingerprinting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>N\u1ebfu b\u1ea1n mu\u1ed1n tr\u00ecnh duy\u1ec7t l\u1ea5y file t\u00e0i nguy\u00ean m\u1edbi nh\u1ea5t (ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u1ea5y t\u1eeb d\u1eef li\u1ec7u l\u01b0u trong b\u1ed9 nh\u1edb \u0111\u1ec7m) b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ean file duy nh\u1ea5t cho n\u00f3. <\/p>\n\n\n\n<p>L\u1ea5y v\u00ed d\u1ee5, n\u1ebfu file css c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 &#8220;main.css&#8221;, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ed5i t\u00ean n\u00f3 th\u00e0nh &#8220;main_1.css&#8221;. L\u1ea7n t\u1edbi khi b\u1ea1n ch\u1ec9nh s\u1eeda n\u00f3, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ed5i t\u00ean l\u1ea7n n\u1eefa th\u00e0nh &#8220;main_2.css&#8221;. <\/p>\n\n\n\n<p>\u0110i\u1ec1u \u0111\u00f3 gi\u00fap file m\u1edbi c\u1eadp nh\u1eadt s\u1ebd \u0111\u01b0\u1ee3c t\u1ea3i (ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 file b\u1ecb cache) v\u00e0 r\u1ea5t h\u1eefu d\u1ee5ng cho nh\u1eefng file th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i.<\/p>\n\n\n\n<p>L\u1eddi b\u00e0n c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: \u0111\u00e2y l\u00e0 c\u00e1ch m\u00e0 c\u00e1c plugin, theme v\u1eabn hay l\u00e0m, khi h\u1ecd c\u1eadp nh\u1eadt l\u00ean phi\u00ean b\u1ea3n m\u1edbi, c\u00e1c t\u00ean file s\u1ebd \u0111\u01b0\u1ee3c th\u00eam c\u00e1c con s\u1ed1 \u0111\u1eb1ng sau.<\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#aba52736\">V\u00e0i l\u1eddi t\u1eeb Ki\u1ebfn c\u00e0ng: n\u1ebfu b\u1ea1n d\u00f9ng webserver OpenLiteSpeed k\u1ebft h\u1ee3p v\u1edbi plugin LiteSpeed cache, vi\u1ec7c <a href=\"https:\/\/kiencang.net\/browser-cache-ttl-trong-openlitespeed\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111i\u1ec1u ch\u1ec9nh cache tr\u00ecnh duy\u1ec7t s\u1ebd kh\u00f4ng th\u00e0nh c\u00f4ng qua giao di\u1ec7n c\u1ee7a plugin cache n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o b\u00e0i vi\u1ebft sau \u0111\u1ec3 kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 \u0111\u00f3<\/a>.<\/p>\n\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft: Leverage browser caching- T\u00e1c gi\u1ea3: Patrick Sexton &#8211; Website: Varvy)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>#1. Cache ph\u00eda tr\u00ecnh duy\u1ec7t l\u00e0 g\u00ec? Tr\u00ecnh duy\u1ec7t l\u01b0u gi\u1eef c\u00e1c file t\u00e0i nguy\u00ean c\u1ee7a trang web trong b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 c\u1ee7a m\u00e1y t\u00ednh \/ thi\u1ebft b\u1ecb di \u0111\u1ed9ng khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m m\u1ed9t trang web. &#8220;T\u1eadn d\u1ee5ng&#8221; b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t (browser cache) l\u00e0 khi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web &hellip;<\/p>\n","protected":false},"author":1,"featured_media":13067,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[249,294],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u1eadn d\u1ee5ng cache tr\u00ecnh duy\u1ec7t: K\u1ef9 thu\u1eadt t\u0103ng t\u1ed1c website \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3 &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1eadn d\u1ee5ng cache tr\u00ecnh duy\u1ec7t: K\u1ef9 thu\u1eadt t\u0103ng t\u1ed1c website \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3 &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"#1. 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Tr\u00ecnh duy\u1ec7t l\u01b0u gi\u1eef c\u00e1c file t\u00e0i nguy\u00ean c\u1ee7a trang web trong b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 c\u1ee7a m\u00e1y t\u00ednh \/ thi\u1ebft b\u1ecb di \u0111\u1ed9ng khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m m\u1ed9t trang web. &#8220;T\u1eadn d\u1ee5ng&#8221; b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t (browser cache) l\u00e0 khi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-12T02:24:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-06T04:22:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/tan-dung-bo-nho-dem-trinh-duyet.png\" \/>\n\t<meta property=\"og:image:width\" content=\"816\" \/>\n\t<meta property=\"og:image:height\" content=\"428\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"T\u1eadn d\u1ee5ng cache tr\u00ecnh duy\u1ec7t: K\u1ef9 thu\u1eadt t\u0103ng t\u1ed1c website \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3 &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/","og_locale":"vi_VN","og_type":"article","og_title":"T\u1eadn d\u1ee5ng cache tr\u00ecnh duy\u1ec7t: K\u1ef9 thu\u1eadt t\u0103ng t\u1ed1c website \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3 &#8226; Ki\u1ebfn c\u00e0ng","og_description":"#1. Cache ph\u00eda tr\u00ecnh duy\u1ec7t l\u00e0 g\u00ec? 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