{"id":26631,"date":"2025-11-10T11:40:28","date_gmt":"2025-11-10T04:40:28","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=26631"},"modified":"2025-11-10T14:29:32","modified_gmt":"2025-11-10T07:29:32","slug":"auto-scaling-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/","title":{"rendered":"Auto Scaling l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch A-Z v\u1ec1 Co gi\u00e3n Cloud [\u0110\u1ea7y \u0111\u1ee7 2025]"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/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\"><span class=\"ez-toc-js-icon-con\"><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><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Auto-Scaling-la-gi\" >Auto Scaling 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:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Tai-sao-Auto-Scaling-lai-quan-trong\" >T\u1ea1i sao Auto Scaling l\u1ea1i quan tr\u1ecdng?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Toi-uu-chi-phi-toi-da-Cost-Optimization\" >T\u1ed1i \u01b0u chi ph\u00ed t\u1ed1i \u0111a (Cost Optimization)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Dam-bao-hieu-nang-va-trai-nghiem-nguoi-dung-Performance-Availability\" >\u0110\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng (Performance &amp; Availability)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Tang-cuong-kha-nang-phuc-hoi-Fault-Tolerance\" >T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (Fault Tolerance)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Co-che-hoat-dong-cua-Auto-Scaling\" >C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Auto Scaling<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#1-Cac-thanh-phan-chinh-cua-he-thong-Auto-Scaling\" >1. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng Auto Scaling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#2-Luong-hoat-dong-co-ban\" >2. Lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Cac-loai-Auto-Scaling-pho-bien-hien-nay\" >C\u00e1c lo\u1ea1i Auto Scaling ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Horizontal-Scaling-Scale-OutIn\" >Horizontal Scaling (Scale Out\/In)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Vertical-Scaling-Scale-UpDown\" >Vertical Scaling (Scale Up\/Down)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Predictive-Scaling-Du-doan-tai\" >Predictive Scaling (D\u1ef1 \u0111o\u00e1n t\u1ea3i)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Khi-nao-nen-chon-loai-nao\" >Khi n\u00e0o n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Khi-nao-nen-su-dung-Auto-Scaling\" >Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng Auto Scaling?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Ung-dung-webAPI-co-luu-luong-truy-cap-bien-dong\" >\u1ee8ng d\u1ee5ng web\/API c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp bi\u1ebfn \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Nen-tang-Thuong-mai-dien-tu-E-commerce\" >N\u1ec1n t\u1ea3ng Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed (E-commerce)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#He-thong-xu-ly-du-lieu-theo-lo-Batch-Processing\" >H\u1ec7 th\u1ed1ng x\u1eed l\u00fd d\u1eef li\u1ec7u theo l\u00f4 (Batch Processing)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Ung-dung-Microservices\" >\u1ee8ng d\u1ee5ng Microservices<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Moi-truong-Development-Phat-trien-va-Testing-Kiem-thu\" >M\u00f4i tr\u01b0\u1eddng Development (Ph\u00e1t tri\u1ec3n) v\u00e0 Testing (Ki\u1ec3m th\u1eed)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Cac-ung-dung-yeu-cau-tinh-san-sang-cao\" >C\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Auto-Scaling-tren-cac-nen-tang-Cloud-pho-bien\" >Auto Scaling tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng Cloud ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#1-Amazon-Web-Services-AWS\" >1. Amazon Web Services (AWS)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#2-Microsoft-Azure\" >2. Microsoft Azure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#3-Google-Cloud-Platform-GCP\" >3. Google Cloud Platform (GCP)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#4-Kubernetes-K8s\" >4. Kubernetes (K8s)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Phan-biet-Auto-Scaling-va-Load-Balancing\" >Ph\u00e2n bi\u1ec7t Auto Scaling v\u00e0 Load Balancing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Luu-y-khi-trien-khai-Auto-Scaling\" >L\u01b0u \u00fd khi tri\u1ec3n khai Auto Scaling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Cau-hoi-thuong-gap-ve-Auto-Scaling-FAQ\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Auto Scaling (FAQ)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/#Ket-luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<p>Website c\u1ee7a b\u1ea1n th\u01b0\u1eddng xuy\u00ean ch\u1eadm ho\u1eb7c s\u1eadp v\u00e0o gi\u1edd cao \u0111i\u1ec3m? Chi ph\u00ed h\u1ea1 t\u1ea7ng cloud m\u1ed7i th\u00e1ng l\u00e0 m\u1ed9t con s\u1ed1 kh\u00f3 \u0111o\u00e1n?\u00a0Auto Scaling\u00a0ch\u00ednh l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea1n c\u1ea7n t\u00ecm. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a\u00a0InterData\u00a0s\u1ebd gi\u1ea3i th\u00edch c\u1eb7n k\u1ebd\u00a0<a href=\"https:\/\/interdata.vn\/blog\/auto-scaling-la-gi\/\"><strong>Auto Scaling l\u00e0 g\u00ec<\/strong><\/a>, t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 nh\u01b0 th\u1ebf n\u00e0o? C\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 Auto Scaling nh\u1eb1m t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng lu\u00f4n v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh, mang l\u1ea1i tr\u1ea3i nghi\u1ec7m t\u1ed1t nh\u1ea5t cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Auto-Scaling-la-gi\"><\/span>Auto Scaling l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Auto Scaling (hay t\u1ef1 \u0111\u1ed9ng co gi\u00e3n)<\/strong> l\u00e0 m\u1ed9t t\u00ednh n\u0103ng trong c\u00f4ng ngh\u1ec7 <a href=\"https:\/\/interdata.vn\/blog\/cloud-computing-la-gi\/\">\u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/a> cho ph\u00e9p h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng t\u00e0i nguy\u00ean t\u00ednh to\u00e1n, v\u00ed d\u1ee5 nh\u01b0 m\u00e1y ch\u1ee7 \u1ea3o (Virtual Machine), \u0111\u1ec3 \u0111\u00e1p \u1ee9ng ch\u00ednh x\u00e1c nhu c\u1ea7u t\u1ea3i \u1edf th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i.<\/p>\n<p>\u0110\u1ec3 d\u1ec5 h\u00ecnh dung h\u01a1n, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n l\u00e0 m\u1ed9t si\u00eau th\u1ecb. V\u00e0o ng\u00e0y th\u01b0\u1eddng, ch\u1ec9 c\u1ea7n 5 qu\u1ea7y thanh to\u00e1n l\u00e0 \u0111\u1ee7. Nh\u01b0ng v\u00e0o cu\u1ed1i tu\u1ea7n hay d\u1ecbp l\u1ec5, l\u01b0\u1ee3ng kh\u00e1ch t\u0103ng v\u1ecdt, g\u00e2y ra c\u1ea3nh x\u1ebfp h\u00e0ng d\u00e0i.<\/p>\n<p>Thay v\u00ec ph\u1ea3i g\u1ecdi nh\u00e2n vi\u00ean \u0111i l\u00e0m th\u00eam m\u1ed9t c\u00e1ch b\u1ecb \u0111\u1ed9ng, si\u00eau th\u1ecb th\u00f4ng minh s\u1ebd t\u1ef1 \u0111\u1ed9ng m\u1edf th\u00eam 5, 10 qu\u1ea7y thanh to\u00e1n n\u1eefa khi th\u1ea5y h\u00e0ng \u0111\u1ee3i d\u00e0i ra. V\u00e0 khi kh\u00e1ch v\u1eafng, c\u00e1c qu\u1ea7y n\u00e0y l\u1ea1i t\u1ef1 \u0111\u1ed9ng \u0111\u00f3ng l\u1ea1i \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u00e2n s\u1ef1. \u0110\u00f3 ch\u00ednh l\u00e0 c\u00e1ch Auto Scaling ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<figure id=\"attachment_26636\" aria-describedby=\"caption-attachment-26636\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-26636\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling.jpg\" alt=\"Auto Scaling\" width=\"750\" height=\"422\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-300x169.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-26636\" class=\"wp-caption-text\">Auto Scaling<\/figcaption><\/figure>\n<p>M\u1ee5c ti\u00eau cu\u1ed1i c\u00f9ng c\u1ee7a Auto Scaling l\u00e0 c\u00e2n b\u1eb1ng gi\u1eefa hai y\u1ebfu t\u1ed1 quan tr\u1ecdng:<\/p>\n<ol>\n<li><strong>Hi\u1ec7u n\u0103ng:<\/strong> Lu\u00f4n c\u00f3 \u0111\u1ee7 t\u00e0i nguy\u00ean \u0111\u1ec3 x\u1eed l\u00fd m\u1ecdi y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o \u1ee9ng d\u1ee5ng ch\u1ea1y m\u01b0\u1ee3t m\u00e0.<\/li>\n<li><strong>Chi ph\u00ed:<\/strong> Ch\u1ec9 tr\u1ea3 ti\u1ec1n cho nh\u1eefng t\u00e0i nguy\u00ean th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, tr\u00e1nh l\u00e3ng ph\u00ed t\u1ed1i \u0111a.<\/li>\n<\/ol>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a <strong>Auto Scaling l\u00e0 g\u00ec<\/strong> s\u1ebd gi\u00fap c\u00e1c doanh nghi\u1ec7p v\u00e0 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u1ed9t h\u1ea1 t\u1ea7ng linh ho\u1ea1t, hi\u1ec7u qu\u1ea3 v\u00e0 kinh t\u1ebf tr\u00ean n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-Auto-Scaling-lai-quan-trong\"><\/span>T\u1ea1i sao Auto Scaling l\u1ea1i quan tr\u1ecdng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong m\u00f4i tr\u01b0\u1eddng kinh doanh s\u1ed1 \u0111\u1ea7y bi\u1ebfn \u0111\u1ed9ng, vi\u1ec7c duy tr\u00ec m\u1ed9t h\u1ec7 th\u1ed1ng \u1ed5n \u0111\u1ecbnh v\u00e0 ti\u1ebft ki\u1ec7m l\u00e0 b\u00e0i to\u00e1n \u0111au \u0111\u1ea7u c\u1ee7a nhi\u1ec1u nh\u00e0 qu\u1ea3n l\u00fd. Auto Scaling kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u00ednh n\u0103ng k\u1ef9 thu\u1eadt, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 chi\u1ebfn l\u01b0\u1ee3c mang l\u1ea1i l\u1ee3i \u00edch kinh doanh r\u00f5 r\u1ec7t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-uu-chi-phi-toi-da-Cost-Optimization\"><\/span><strong>T\u1ed1i \u01b0u chi ph\u00ed t\u1ed1i \u0111a (Cost Optimization)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 l\u1ee3i \u00edch h\u1ea5p d\u1eabn nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 qu\u1ea3n l\u00fd v\u00e0 ch\u1ee7 doanh nghi\u1ec7p. Theo ph\u01b0\u01a1ng ph\u00e1p h\u1ea1 t\u1ea7ng truy\u1ec1n th\u1ed1ng, b\u1ea1n th\u01b0\u1eddng ph\u1ea3i mua ho\u1eb7c thu\u00ea m\u00e1y ch\u1ee7 c\u1ea5u h\u00ecnh cao nh\u1ea5t \u0111\u1ec3 &#8220;ph\u00f2ng h\u1edd&#8221; cho nh\u1eefng ng\u00e0y cao \u0111i\u1ec3m. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng l\u00e3ng ph\u00ed t\u00e0i nguy\u00ean c\u1ef1c l\u1edbn v\u00e0o nh\u1eefng l\u00fac b\u00ecnh th\u01b0\u1eddng, khi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u1ea5p.<\/p>\n<p>Auto Scaling gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u01a1 ch\u1ebf &#8220;pay-as-you-go&#8221; (tr\u1ea3 ti\u1ec1n theo dung l\u01b0\u1ee3ng s\u1eed d\u1ee5ng).<\/p>\n<ul>\n<li><strong>Khi t\u1ea3i th\u1ea5p:<\/strong> H\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng gi\u1ea3m b\u1edbt s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 \u0111ang ch\u1ea1y, gi\u00fap b\u1ea1n c\u1eaft gi\u1ea3m chi ph\u00ed kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n<li><strong>Khi t\u1ea3i cao:<\/strong> H\u1ec7 th\u1ed1ng ch\u1ec9 th\u00eam t\u00e0i nguy\u00ean khi th\u1ef1c s\u1ef1 c\u1ea7n.<\/li>\n<\/ul>\n<p>V\u00ed d\u1ee5, m\u1ed9t trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 ch\u1ec9 c\u1ea7n 10 m\u00e1y ch\u1ee7 v\u00e0o ban \u0111\u00eam, nh\u01b0ng c\u1ea7n t\u1edbi 100 m\u00e1y ch\u1ee7 trong gi\u1edd Flash Sale. V\u1edbi Auto Scaling, h\u1ecd ch\u1ec9 ph\u1ea3i tr\u1ea3 ti\u1ec1n cho 100 m\u00e1y ch\u1ee7 trong v\u00e0i gi\u1edd di\u1ec5n ra s\u1ef1 ki\u1ec7n, thay v\u00ec ph\u1ea3i duy tr\u00ec 100 m\u00e1y ch\u1ee7 su\u1ed1t c\u1ea3 th\u00e1ng. Vi\u1ec7c \u00e1p d\u1ee5ng \u0111\u00fang chi\u1ebfn l\u01b0\u1ee3c c\u00f3 th\u1ec3 gi\u00fap <strong>ti\u1ebft ki\u1ec7m chi ph\u00ed cloud<\/strong> t\u1eeb 30% \u0111\u1ebfn 50% ho\u1eb7c h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dam-bao-hieu-nang-va-trai-nghiem-nguoi-dung-Performance-Availability\"><\/span><strong>\u0110\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng (Performance &amp; Availability)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng l\u00e0 y\u1ebfu t\u1ed1 s\u1ed1ng c\u00f2n. Kh\u00f4ng kh\u00e1ch h\u00e0ng n\u00e0o mu\u1ed1n ch\u1edd \u0111\u1ee3i m\u1ed9t trang web t\u1ea3i ch\u1eadm hay nh\u1eadn v\u1ec1 th\u00f4ng b\u00e1o l\u1ed7i &#8220;503 Service Unavailable&#8221;. Nh\u1eefng s\u1ef1 c\u1ed1 n\u00e0y kh\u00f4ng ch\u1ec9 g\u00e2y kh\u00f3 ch\u1ecbu m\u00e0 c\u00f2n l\u00e0m m\u1ea5t doanh thu v\u00e0 gi\u1ea3m uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u.<\/p>\n<p>Auto Scaling ch\u00ednh l\u00e0 ng\u01b0\u1eddi b\u1ea3o v\u1ec7 cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. Khi m\u1ed9t chi\u1ebfn d\u1ecbch marketing th\u00e0nh c\u00f4ng ngo\u00e0i mong \u0111\u1ee3i ho\u1eb7c m\u1ed9t s\u1ea3n ph\u1ea9m b\u1ea5t ng\u1edd viral, l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd t\u0103ng \u0111\u1ed9t bi\u1ebfn. Auto Scaling s\u1ebd ngay l\u1eadp t\u1ee9c b\u1ed5 sung t\u00e0i nguy\u00ean \u0111\u1ec3 \u0111\u00e1p \u1ee9ng, \u0111\u1ea3m b\u1ea3o:<\/p>\n<ul>\n<li><strong>Website\/\u1ee9ng d\u1ee5ng lu\u00f4n \u1ed5n \u0111\u1ecbnh:<\/strong> Kh\u00f4ng b\u1ecb treo, kh\u00f4ng b\u1ecb s\u1eadp d\u00f9 c\u00f3 h\u00e0ng tr\u0103m ng\u00e0n l\u01b0\u1ee3t truy c\u1eadp c\u00f9ng l\u00fac.<\/li>\n<li><strong>T\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh:<\/strong> Ng\u01b0\u1eddi d\u00f9ng lu\u00f4n c\u00f3 tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0.<\/li>\n<\/ul>\n<p>C\u00e1c s\u1ef1 ki\u1ec7n mua s\u1eafm l\u1edbn nh\u01b0 Black Friday hay ng\u00e0y \u0111\u00f4i (11\/11, 12\/12) tr\u00ean c\u00e1c s\u00e0n Shopee, Lazada l\u00e0 minh ch\u1ee9ng r\u00f5 r\u00e0ng nh\u1ea5t cho s\u1ee9c m\u1ea1nh c\u1ee7a Auto Scaling. N\u1ebfu kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf n\u00e0y, h\u1ec7 th\u1ed1ng c\u1ee7a h\u1ecd kh\u00f3 c\u00f3 th\u1ec3 tr\u1ee5 v\u1eefng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-cuong-kha-nang-phuc-hoi-Fault-Tolerance\"><\/span><strong>T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (Fault Tolerance)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng n\u00e0o l\u00e0 ho\u00e0n h\u1ea3o 100%. M\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i ph\u1ea7n c\u1ee9ng, ph\u1ea7n m\u1ec1m c\u00f3 th\u1ec3 b\u1ecb treo. Auto Scaling gi\u00fap t\u0103ng c\u01b0\u1eddng &#8220;s\u1ee9c kh\u1ecfe&#8221; cho h\u1ea1 t\u1ea7ng b\u1eb1ng c\u00e1ch t\u1ef1 \u0111\u1ed9ng h\u00f3a vi\u1ec7c ph\u1ee5c h\u1ed3i.<\/p>\n<p>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng r\u1ea5t th\u00f4ng minh:<\/p>\n<ul>\n<li>M\u1ed9t &#8220;Health Check&#8221; (Ki\u1ec3m tra s\u1ee9c kh\u1ecfe) s\u1ebd li\u00ean t\u1ee5c gi\u00e1m s\u00e1t tr\u1ea1ng th\u00e1i c\u1ee7a t\u1eebng m\u00e1y ch\u1ee7 trong nh\u00f3m.<\/li>\n<li>N\u1ebfu ph\u00e1t hi\u1ec7n m\u1ed9t m\u00e1y ch\u1ee7 n\u00e0o \u0111\u00f3 kh\u00f4ng ph\u1ea3n h\u1ed3i ho\u1eb7c b\u1ecb l\u1ed7i, Auto Scaling s\u1ebd t\u1ef1 \u0111\u1ed9ng ch\u1ea5m d\u1ee9t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ch\u1ee7 \u0111\u00f3.<\/li>\n<li>Ngay l\u1eadp t\u1ee9c, m\u1ed9t m\u00e1y ch\u1ee7 m\u1edbi ho\u00e0n to\u00e0n kh\u1ecfe m\u1ea1nh s\u1ebd \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o \u0111\u1ec3 thay th\u1ebf.<\/li>\n<\/ul>\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng, th\u01b0\u1eddng ch\u1ec9 trong v\u00e0i ph\u00fat, m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea5t k\u1ef3 s\u1ef1 can thi\u1ec7p n\u00e0o t\u1eeb con ng\u01b0\u1eddi. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 <strong>kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i<\/strong> cao, gi\u1ea3m thi\u1ec3u th\u1eddi gian ch\u1ebft (downtime) v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c cho ho\u1ea1t \u0111\u1ed9ng kinh doanh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Co-che-hoat-dong-cua-Auto-Scaling\"><\/span>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Auto Scaling<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u r\u00f5 c\u00e1ch Auto Scaling ho\u1ea1t \u0111\u1ed9ng s\u1ebd gi\u00fap b\u1ea1n c\u1ea5u h\u00ecnh v\u00e0 s\u1eed d\u1ee5ng n\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n. V\u1ec1 c\u01a1 b\u1ea3n, qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c gi\u00e1m s\u00e1t, ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean ch\u00ednh s\u00e1ch v\u00e0 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh t\u00e0i nguy\u00ean. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng ch\u00ednh.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26635\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-02.jpg\" alt=\"Auto Scaling 02\" width=\"750\" height=\"480\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-02.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-02-300x192.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Cac-thanh-phan-chinh-cua-he-thong-Auto-Scaling\"><\/span>1. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng Auto Scaling<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t h\u1ec7 th\u1ed1ng Auto Scaling \u0111i\u1ec3n h\u00ecnh th\u01b0\u1eddng bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i sau:<\/p>\n<ul>\n<li><strong>Nh\u00f3m t\u00e0i nguy\u00ean c\u00f3 th\u1ec3 co gi\u00e3n (Scalable Resource Group):<\/strong> \u0110\u00e2y l\u00e0 t\u1eadp h\u1ee3p c\u00e1c t\u00e0i nguy\u00ean gi\u1ed1ng h\u1ec7t nhau m\u00e0 Auto Scaling s\u1ebd qu\u1ea3n l\u00fd. V\u00ed d\u1ee5: m\u1ed9t nh\u00f3m c\u00e1c m\u00e1y ch\u1ee7 \u1ea3o EC2 trong <strong>Auto Scaling Group (ASG)<\/strong> c\u1ee7a Amazon Web Services (AWS), m\u1ed9t <strong>VM Scale Set (VMSS)<\/strong> trong Microsoft Azure, ho\u1eb7c m\u1ed9t <strong>Managed Instance Group (MIG)<\/strong> trong Google Cloud Platform (GCP). Trong <a href=\"https:\/\/interdata.vn\/blog\/kubernetes-la-gi\/\">Kubernetes<\/a>, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t nh\u00f3m c\u00e1c Pod \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi m\u1ed9t Deployment ho\u1eb7c ReplicaSet.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh kh\u1edfi ch\u1ea1y (Launch Configuration \/ Template):<\/strong> \u0110\u00e2y l\u00e0 b\u1ea3n thi\u1ebft k\u1ebf chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a c\u00e1ch t\u1ea1o ra m\u1ed9t t\u00e0i nguy\u00ean m\u1edbi khi c\u1ea7n Scale Out. N\u00f3 bao g\u1ed3m th\u00f4ng tin nh\u01b0 lo\u1ea1i m\u00e1y \u1ea3o (instance type), image h\u1ec7 \u0111i\u1ec1u h\u00e0nh (AMI\/OS Image), c\u1ea5u h\u00ecnh m\u1ea1ng, user data (script kh\u1edfi ch\u1ea1y), v\u00e0 c\u00e1c thi\u1ebft l\u1eadp kh\u00e1c. \u0110\u1ea3m b\u1ea3o m\u1ecdi instance m\u1edbi \u0111\u1ec1u gi\u1ed1ng h\u1ec7t nhau.<\/li>\n<li><strong>Ch\u00ednh s\u00e1ch co gi\u00e3n (Scaling Policy):<\/strong> \u0110\u00e2y l\u00e0 b\u1ed9 quy t\u1eafc quy\u1ebft \u0111\u1ecbnh KHI N\u00c0O v\u00e0 L\u00c0M TH\u1ebe N\u00c0O \u0111\u1ec3 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng co gi\u00e3n. C\u00f3 nhi\u1ec1u lo\u1ea1i ch\u00ednh s\u00e1ch kh\u00e1c nhau (s\u1ebd t\u00ecm hi\u1ec3u \u1edf ph\u1ea7n sau), nh\u01b0ng ch\u00fang th\u01b0\u1eddng d\u1ef1a tr\u00ean vi\u1ec7c theo d\u00f5i c\u00e1c ch\u1ec9 s\u1ed1 ho\u1eb7c d\u1ef1a v\u00e0o l\u1ecbch tr\u00ecnh \u0111\u1ecbnh s\u1eb5n. V\u00ed d\u1ee5: &#8220;N\u1ebfu CPU trung b\u00ecnh c\u1ee7a nh\u00f3m v\u01b0\u1ee3t qu\u00e1 70% trong 5 ph\u00fat, h\u00e3y th\u00eam 2 instance m\u1edbi&#8221;.<\/li>\n<li><strong>Gi\u00e1m s\u00e1t (Monitoring):<\/strong> \u0110\u1ec3 c\u00e1c ch\u00ednh s\u00e1ch ho\u1ea1t \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng c\u1ea7n li\u00ean t\u1ee5c theo d\u00f5i tr\u1ea1ng th\u00e1i v\u00e0 hi\u1ec7u n\u0103ng c\u1ee7a nh\u00f3m t\u00e0i nguy\u00ean. C\u00e1c d\u1ecbch v\u1ee5 gi\u00e1m s\u00e1t \u0111\u00e1m m\u00e2y nh\u01b0 AWS CloudWatch, Azure Monitor, Google Cloud Monitoring thu th\u1eadp c\u00e1c <strong>ch\u1ec9 s\u1ed1 (Metrics)<\/strong> quan tr\u1ecdng. C\u00e1c metrics ph\u1ed5 bi\u1ebfn bao g\u1ed3m: M\u1ee9c s\u1eed d\u1ee5ng CPU (CPU Utilization), M\u1ee9c s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb (Memory Usage), L\u01b0u l\u01b0\u1ee3ng m\u1ea1ng (Network I\/O), \u0110\u1ed9 d\u00e0i h\u00e0ng \u0111\u1ee3i y\u00eau c\u1ea7u (Request Queue Length), \u0111\u1ed9 tr\u1ec5 ph\u1ea3n h\u1ed3i&#8230;<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng co gi\u00e3n (Scaling Actions):<\/strong> D\u1ef1a tr\u00ean quy\u1ebft \u0111\u1ecbnh c\u1ee7a Scaling Policy, h\u1ec7 th\u1ed1ng s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ee5 th\u1ec3:\n<ul>\n<li><strong>Scale Out:<\/strong> Th\u00eam c\u00e1c instance\/VM\/container m\u1edbi v\u00e0o nh\u00f3m.<\/li>\n<li><strong>Scale In:<\/strong> X\u00f3a b\u1edbt c\u00e1c instance\/VM\/container kh\u1ecfi nh\u00f3m.<\/li>\n<li><strong>Scale Up:<\/strong> (\u00cdt ph\u1ed5 bi\u1ebfn h\u01a1n trong Auto Scaling t\u1ef1 \u0111\u1ed9ng) T\u0103ng c\u1ea5u h\u00ecnh (CPU, <a href=\"https:\/\/interdata.vn\/blog\/ram-server\/\">RAM<\/a>) c\u1ee7a c\u00e1c instance hi\u1ec7n c\u00f3.<\/li>\n<li><strong>Scale Down:<\/strong> (\u00cdt ph\u1ed5 bi\u1ebfn h\u01a1n) Gi\u1ea3m c\u1ea5u h\u00ecnh c\u1ee7a c\u00e1c instance hi\u1ec7n c\u00f3.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-Luong-hoat-dong-co-ban\"><\/span>2. Lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 d\u1ec5 h\u00ecnh dung, h\u00e3y xem x\u00e9t m\u1ed9t lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng Scale Out \u0111\u01a1n gi\u1ea3n c\u1ee7a m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">\u1ee9ng d\u1ee5ng web<\/a> ch\u1ea1y tr\u00ean AWS s\u1eed d\u1ee5ng ASG:<\/p>\n<ol>\n<li><strong>Gi\u00e1m s\u00e1t:<\/strong> D\u1ecbch v\u1ee5 AWS CloudWatch li\u00ean t\u1ee5c theo d\u00f5i ch\u1ec9 s\u1ed1 &#8220;CPU Utilization&#8221; (M\u1ee9c s\u1eed d\u1ee5ng CPU trung b\u00ecnh) c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c instance trong ASG. Gi\u1ea3 s\u1eed, ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c thu th\u1eadp m\u1ed7i ph\u00fat.<\/li>\n<li><strong>\u0110\u00e1nh gi\u00e1 Ch\u00ednh s\u00e1ch:<\/strong> M\u1ed9t Scaling Policy \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh: &#8220;N\u1ebfu CPU Utilization trung b\u00ecnh l\u1edbn h\u01a1n 70% trong kho\u1ea3ng th\u1eddi gian 5 ph\u00fat li\u00ean t\u1ee5c, h\u00e3y th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng Scale Out&#8221;.<\/li>\n<li><strong>K\u00edch ho\u1ea1t H\u00e0nh \u0111\u1ed9ng:<\/strong> V\u00e0o gi\u1edd cao \u0111i\u1ec3m, l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng m\u1ea1nh. CPU Utilization trung b\u00ecnh c\u1ee7a nh\u00f3m v\u01b0\u1ee3t ng\u01b0\u1ee1ng 70% v\u00e0 duy tr\u00ec tr\u00ean m\u1ee9c \u0111\u00f3 trong 5 ph\u00fat. CloudWatch g\u1eedi c\u1ea3nh b\u00e1o (Alarm) \u0111\u1ebfn ASG.<\/li>\n<li><strong>Th\u1ef1c hi\u1ec7n Scale Out:<\/strong> ASG nh\u1eadn t\u00edn hi\u1ec7u v\u00e0 t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng Scale Out. N\u00f3 s\u1eed d\u1ee5ng Launch Template \u0111\u00e3 c\u1ea5u h\u00ecnh \u0111\u1ec3 kh\u1edfi ch\u1ea1y m\u1ed9t (ho\u1eb7c nhi\u1ec1u, t\u00f9y ch\u00ednh s\u00e1ch) instance EC2 m\u1edbi.<\/li>\n<li><strong>Kh\u1edfi t\u1ea1o &amp; \u0110\u0103ng k\u00fd:<\/strong> Instance m\u1edbi kh\u1edfi \u0111\u1ed9ng, c\u00e0i \u0111\u1eb7t \u1ee9ng d\u1ee5ng (n\u1ebfu c\u1ea7n th\u00f4ng qua user data). Sau khi v\u01b0\u1ee3t qua ki\u1ec3m tra s\u1ee9c kh\u1ecfe (health check) c\u1ee7a ASG v\u00e0 (n\u1ebfu c\u00f3) c\u1ee7a Elastic Load Balancer (ELB), instance n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o nh\u00f3m v\u00e0 b\u1eaft \u0111\u1ea7u nh\u1eadn m\u1ed9t ph\u1ea7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb ELB.<\/li>\n<li><strong>\u1ed4n \u0111\u1ecbnh:<\/strong> V\u1edbi instance m\u1edbi, t\u1ea3i \u0111\u01b0\u1ee3c san s\u1ebb, CPU Utilization trung b\u00ecnh c\u1ee7a nh\u00f3m gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi ng\u01b0\u1ee1ng 70%. H\u1ec7 th\u1ed1ng tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh v\u1edbi nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n.<\/li>\n<\/ol>\n<p>Qu\u00e1 tr\u00ecnh Scale In (gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng instance khi t\u1ea3i th\u1ea5p) c\u0169ng di\u1ec5n ra t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng theo chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i, d\u1ef1a tr\u00ean m\u1ed9t ch\u00ednh s\u00e1ch kh\u00e1c (v\u00ed d\u1ee5: CPU Utilization &lt; 30%).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-loai-Auto-Scaling-pho-bien-hien-nay\"><\/span>C\u00e1c lo\u1ea1i Auto Scaling ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u r\u00f5 <strong>Auto Scaling l\u00e0 g\u00ec<\/strong> bao g\u1ed3m c\u1ea3 vi\u1ec7c n\u1eafm \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i h\u00ecnh v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang. C\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 ph\u00e2n lo\u1ea1i, nh\u01b0ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 d\u1ef1a tr\u00ean c\u00e1ch th\u1ee9c co gi\u00e3n t\u00e0i nguy\u00ean.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Horizontal-Scaling-Scale-OutIn\"><\/span><strong>Horizontal Scaling (Scale Out\/In)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Horizontal Scaling, hay co gi\u00e3n theo chi\u1ec1u ngang, l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t. C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00e0 <strong>thay \u0111\u1ed5i s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7<\/strong>.<\/p>\n<ul>\n<li><strong>Scale Out (M\u1edf r\u1ed9ng):<\/strong> Khi t\u1ea3i t\u0103ng, h\u1ec7 th\u1ed1ng s\u1ebd th\u00eam c\u00e1c m\u00e1y ch\u1ee7 m\u1edbi v\u00e0o nh\u00f3m. V\u00ed d\u1ee5: t\u1eeb 3 m\u00e1y ch\u1ee7 t\u0103ng l\u00ean 5, r\u1ed3i 10 m\u00e1y ch\u1ee7.<\/li>\n<li><strong>Scale In (Thu h\u1eb9p):<\/strong> Khi t\u1ea3i gi\u1ea3m, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng x\u00f3a b\u1edbt c\u00e1c m\u00e1y ch\u1ee7 kh\u00f4ng c\u1ea7n thi\u1ebft. V\u00ed d\u1ee5: t\u1eeb 10 m\u00e1y ch\u1ee7 gi\u1ea3m xu\u1ed1ng c\u00f2n 3.<\/li>\n<\/ul>\n<p>\u01afu \u0111i\u1ec3m l\u1edbn c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 t\u00ednh linh ho\u1ea1t g\u1ea7n nh\u01b0 v\u00f4 h\u1ea1n v\u00e0 kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5. C\u00e1c m\u00e1y ch\u1ee7 m\u1edbi \u0111\u01b0\u1ee3c th\u00eam v\u00e0o s\u1ebd nh\u1eadn m\u1ed9t ph\u1ea7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb b\u1ed9 c\u00e2n b\u1eb1ng t\u1ea3i (Load Balancer), gi\u00fap san s\u1ebb g\u00e1nh n\u1eb7ng cho to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Vertical-Scaling-Scale-UpDown\"><\/span><strong>Vertical Scaling (Scale Up\/Down)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Vertical Scaling, hay co gi\u00e3n theo chi\u1ec1u d\u1ecdc, ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch <strong>thay \u0111\u1ed5i s\u1ee9c m\u1ea1nh c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 duy nh\u1ea5t<\/strong>.<\/p>\n<ul>\n<li><strong>Scale Up (N\u00e2ng c\u1ea5p):<\/strong> Khi t\u1ea3i t\u0103ng, h\u1ec7 th\u1ed1ng s\u1ebd t\u0103ng c\u01b0\u1eddng t\u00e0i nguy\u00ean cho m\u00e1y ch\u1ee7 hi\u1ec7n t\u1ea1i, nh\u01b0 n\u00e2ng c\u1ea5p t\u1eeb 4-core CPU l\u00ean 8-core CPU, ho\u1eb7c t\u1eeb 16GB RAM l\u00ean 32GB RAM.<\/li>\n<li><strong>Scale Down (H\u1ea1 c\u1ea5p):<\/strong> Khi t\u1ea3i gi\u1ea3m, h\u1ec7 th\u1ed1ng s\u1ebd gi\u1ea3m c\u1ea5u h\u00ecnh c\u1ee7a m\u00e1y ch\u1ee7 v\u1ec1 m\u1ee9c th\u1ea5p h\u01a1n \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/li>\n<\/ul>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f3 ph\u00e2n t\u00e1n tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u (database). Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 c\u00f3 gi\u1edbi h\u1ea1n (b\u1ea1n kh\u00f4ng th\u1ec3 n\u00e2ng c\u1ea5p m\u00e3i) v\u00e0 th\u01b0\u1eddng y\u00eau c\u1ea7u kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y ch\u1ee7, g\u00e2y ra m\u1ed9t kho\u1ea3ng th\u1eddi gian gi\u00e1n \u0111o\u1ea1n ng\u1eafn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Predictive-Scaling-Du-doan-tai\"><\/span><strong>Predictive Scaling (D\u1ef1 \u0111o\u00e1n t\u1ea3i)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c co gi\u00e3n th\u00f4ng minh h\u01a1n, s\u1eed d\u1ee5ng Machine Learning (H\u1ecdc m\u00e1y) v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1ecbch s\u1eed \u0111\u1ec3 <strong>d\u1ef1 \u0111o\u00e1n nhu c\u1ea7u t\u1ea3i trong t\u01b0\u01a1ng lai<\/strong>.<\/p>\n<p>Thay v\u00ec ch\u1ec9 ph\u1ea3n \u1ee9ng khi t\u1ea3i \u0111\u00e3 t\u0103ng l\u00ean, Predictive Scaling s\u1ebd ph\u00e2n t\u00edch c\u00e1c chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng trong qu\u00e1 kh\u1ee9 (v\u00ed d\u1ee5: l\u01b0\u1ee3ng truy c\u1eadp lu\u00f4n t\u0103ng v\u00e0o 8 gi\u1edd s\u00e1ng v\u00e0 gi\u1ea3m sau 5 gi\u1edd chi\u1ec1u) \u0111\u1ec3 ch\u1ee7 \u0111\u1ed9ng th\u00eam t\u00e0i nguy\u00ean tr\u01b0\u1edbc khi \u0111\u1ee3t cao \u0111i\u1ec3m th\u1ef1c s\u1ef1 di\u1ec5n ra. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u1ec7 th\u1ed1ng chu\u1ea9n b\u1ecb s\u1eb5n s\u00e0ng, lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n \u0111\u1ed9 tr\u1ec5 trong vi\u1ec7c kh\u1edfi t\u1ea1o m\u00e1y ch\u1ee7 m\u1edbi, mang l\u1ea1i tr\u1ea3i nghi\u1ec7m t\u1ed1t nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Khi-nao-nen-chon-loai-nao\"><\/span><strong>Khi n\u00e0o n\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa scale out vs scale up ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o ki\u1ebfn tr\u00fac \u1ee9ng d\u1ee5ng v\u00e0 b\u00e0i to\u00e1n c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p>\n<ul>\n<li><strong>Ch\u1ecdn Horizontal Scaling (co gi\u00e3n ngang)<\/strong> cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng web hi\u1ec7n \u0111\u1ea1i, <a href=\"https:\/\/interdata.vn\/blog\/microservices-la-gi\/\">microservices<\/a>, API gateway. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn m\u1eb7c \u0111\u1ecbnh v\u00ec t\u00ednh linh ho\u1ea1t, kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i cao v\u00e0 kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>Ch\u1ecdn Vertical Scaling (co gi\u00e3n d\u1ecdc)<\/strong> cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1eb7c th\u00f9, \u0111\u01a1n kh\u1ed1i (monolithic) ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng d\u1ec5 d\u00e0ng ch\u1ea1y tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 c\u00f9ng l\u00fac.<\/li>\n<\/ul>\n<p>Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, m\u1ed9t ki\u1ebfn tr\u00fac \u0111\u00e1m m\u00e2y t\u1ed1i \u01b0u s\u1ebd k\u1ebft h\u1ee3p nhi\u1ec1u lo\u1ea1i h\u00ecnh co gi\u00e3n kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao nh\u1ea5t. Vi\u1ec7c hi\u1ec3u r\u00f5 khi n\u00e0o n\u00ean d\u00f9ng lo\u1ea1i n\u00e0o l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a c\u00e2u tr\u1ea3 l\u1eddi cho c\u00e2u h\u1ecfi <strong>Auto Scaling l\u00e0 g\u00ec<\/strong> v\u00e0 l\u00e0m sao \u0111\u1ec3 v\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3.<\/p>\n<p><span style=\"font-size: 20.16px; color: #333333;\">Ph\u00e2n bi\u1ec7t Horizontal Scaling vs Vertical Scaling<\/span><\/p>\n<p>M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 &#8220;lo\u1ea1i&#8221; Auto Scaling theo c\u01a1 ch\u1ebf k\u00edch ho\u1ea1t, vi\u1ec7c ph\u00e2n bi\u1ec7t gi\u1eefa <strong>Horizontal Scaling (M\u1edf r\u1ed9ng ngang)<\/strong> v\u00e0 <strong>Vertical Scaling (M\u1edf r\u1ed9ng d\u1ecdc)<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng khi n\u00f3i v\u1ec1 co gi\u00e3n.<\/p>\n<ul>\n<li><strong>Horizontal Scaling (Scale Out \/ Scale In):<\/strong> \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh m\u00e0 h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng Auto Scaling t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n. N\u00f3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c <strong>th\u00eam (Scale Out) ho\u1eb7c b\u1edbt (Scale In) s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7\/instance\/container<\/strong> trong nh\u00f3m t\u00e0i nguy\u00ean. \u01afu \u0111i\u1ec3m l\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng g\u1ea7n nh\u01b0 kh\u00f4ng gi\u1edbi h\u1ea1n v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i.<\/li>\n<li><strong>Vertical Scaling (Scale Up \/ Scale Down):<\/strong> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c <strong>t\u0103ng (Scale Up) ho\u1eb7c gi\u1ea3m (Scale Down) c\u1ea5u h\u00ecnh c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7\/instance hi\u1ec7n c\u00f3<\/strong> (v\u00ed d\u1ee5: t\u0103ng CPU, RAM). \u01afu \u0111i\u1ec3m l\u00e0 \u0111\u01a1n gi\u1ea3n h\u01a1n trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i ki\u1ebfn tr\u00fac nhi\u1ec1u. Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 c\u00f3 gi\u1edbi h\u1ea1n v\u1ec1 c\u1ea5u h\u00ecnh t\u1ed1i \u0111a c\u1ee7a m\u1ed9t m\u00e1y ch\u1ee7 v\u00e0 th\u01b0\u1eddng y\u00eau c\u1ea7u kh\u1edfi \u0111\u1ed9ng l\u1ea1i (downtime).<\/li>\n<\/ul>\n<p>H\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng cloud t\u1eadp trung v\u00e0o t\u1ef1 \u0111\u1ed9ng h\u00f3a Horizontal Scaling v\u00ec t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a n\u00f3. Vertical Scaling th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u1ee7 c\u00f4ng ho\u1eb7c b\u00e1n t\u1ef1 \u0111\u1ed9ng h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-nen-su-dung-Auto-Scaling\"><\/span>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng Auto Scaling?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Auto Scaling l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho m\u1ecdi lo\u1ea1i \u1ee9ng d\u1ee5ng. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang c\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u00e0 Auto Scaling th\u1ef1c s\u1ef1 ph\u00e1t huy hi\u1ec7u qu\u1ea3 s\u1ebd gi\u00fap b\u1ea1n t\u1eadn d\u1ee5ng t\u1ed1i \u0111a l\u1ee3i \u00edch c\u1ee7a n\u00f3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng ph\u1ed5 bi\u1ebfn n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng Auto Scaling:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung-dung-webAPI-co-luu-luong-truy-cap-bien-dong\"><\/span><strong>\u1ee8ng d\u1ee5ng web\/API c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp bi\u1ebfn \u0111\u1ed9ng<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kinh \u0111i\u1ec3n nh\u1ea5t. N\u1ebfu website, blog, di\u1ec5n \u0111\u00e0n, ho\u1eb7c API c\u1ee7a b\u1ea1n c\u00f3 l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng thay \u0111\u1ed5i r\u00f5 r\u1ec7t theo gi\u1edd trong ng\u00e0y, ng\u00e0y trong tu\u1ea7n, ho\u1eb7c theo m\u00f9a v\u1ee5, Auto Scaling l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. V\u00ed d\u1ee5: c\u00e1c trang tin t\u1ee9c, m\u1ea1ng x\u00e3 h\u1ed9i, \u1ee9ng d\u1ee5ng \u0111\u1eb7t xe.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nen-tang-Thuong-mai-dien-tu-E-commerce\"><\/span><strong>N\u1ec1n t\u1ea3ng Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed (E-commerce)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c trang E-commerce th\u01b0\u1eddng \u0111\u1ed1i m\u1eb7t v\u1edbi s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ef1c l\u1edbn v\u1ec1 l\u01b0u l\u01b0\u1ee3ng, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u0111\u1ee3t khuy\u1ebfn m\u00e3i l\u1edbn nh\u01b0 Black Friday, Cyber Monday, ho\u1eb7c c\u00e1c ng\u00e0y l\u1ec5. Auto Scaling gi\u00fap c\u00e1c n\u1ec1n t\u1ea3ng n\u00e0y x\u1eed l\u00fd h\u00e0ng tri\u1ec7u l\u01b0\u1ee3t truy c\u1eadp m\u00e0 kh\u00f4ng b\u1ecb qu\u00e1 t\u1ea3i, \u0111\u1ed3ng th\u1eddi ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0o nh\u1eefng ng\u00e0y th\u01b0\u1eddng v\u1eafng kh\u00e1ch.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"He-thong-xu-ly-du-lieu-theo-lo-Batch-Processing\"><\/span><strong>H\u1ec7 th\u1ed1ng x\u1eed l\u00fd d\u1eef li\u1ec7u theo l\u00f4 (Batch Processing)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t s\u1ed1 c\u00f4ng vi\u1ec7c x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn (nh\u01b0 b\u00e1o c\u00e1o cu\u1ed1i ng\u00e0y, ph\u00e2n t\u00edch d\u1eef li\u1ec7u, x\u1eed l\u00fd video) \u0111\u00f2i h\u1ecfi n\u0103ng l\u1ef1c t\u00ednh to\u00e1n cao trong m\u1ed9t kho\u1ea3ng th\u1eddi gian ng\u1eafn. Auto Scaling c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng kh\u1edfi ch\u1ea1y m\u1ed9t c\u1ee5m m\u00e1y ch\u1ee7 l\u1edbn \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c, sau \u0111\u00f3 t\u1ef1 \u0111\u1ed9ng x\u00f3a ch\u00fang \u0111i khi ho\u00e0n th\u00e0nh, t\u1ed1i \u01b0u chi ph\u00ed \u0111\u00e1ng k\u1ec3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung-dung-Microservices\"><\/span><strong>\u1ee8ng d\u1ee5ng Microservices<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong ki\u1ebfn tr\u00fac microservices, m\u1ed7i d\u1ecbch v\u1ee5 nh\u1ecf ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp. Auto Scaling cho ph\u00e9p b\u1ea1n co gi\u00e3n t\u1eebng microservice ri\u00eang l\u1ebb d\u1ef1a tr\u00ean nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a d\u1ecbch v\u1ee5 \u0111\u00f3. V\u00ed d\u1ee5, d\u1ecbch v\u1ee5 x\u1eed l\u00fd thanh to\u00e1n c\u00f3 th\u1ec3 c\u1ea7n scale m\u1ea1nh h\u01a1n d\u1ecbch v\u1ee5 qu\u1ea3n l\u00fd ng\u01b0\u1eddi d\u00f9ng trong gi\u1edd cao \u0111i\u1ec3m mua s\u1eafm.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Moi-truong-Development-Phat-trien-va-Testing-Kiem-thu\"><\/span><strong>M\u00f4i tr\u01b0\u1eddng Development (Ph\u00e1t tri\u1ec3n) v\u00e0 Testing (Ki\u1ec3m th\u1eed)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Scheduled Scaling \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng b\u1eadt c\u00e1c m\u00f4i tr\u01b0\u1eddng Dev\/Test v\u00e0o \u0111\u1ea7u gi\u1edd l\u00e0m vi\u1ec7c v\u00e0 t\u1eaft ch\u00fang \u0111i v\u00e0o cu\u1ed1i ng\u00e0y ho\u1eb7c cu\u1ed1i tu\u1ea7n khi kh\u00f4ng c\u00f3 ai s\u1eed d\u1ee5ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cac-ung-dung-yeu-cau-tinh-san-sang-cao\"><\/span><strong>C\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u00ednh s\u1eb5n s\u00e0ng cao<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o m\u00e0 th\u1eddi gian ch\u1ebft (downtime) g\u00e2y \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng kinh doanh ho\u1eb7c tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u n\u00ean s\u1eed d\u1ee5ng Auto Scaling k\u1ebft h\u1ee3p v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt HA kh\u00e1c (nh\u01b0 multi-AZ deployment) \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ef1c k\u1ef3 \u1ed5n \u0111\u1ecbnh, d\u1ec5 d\u1ef1 \u0111o\u00e1n v\u00e0 kh\u00f4ng thay \u0111\u1ed5i nhi\u1ec1u theo th\u1eddi gian c\u00f3 th\u1ec3 kh\u00f4ng c\u1ea7n \u0111\u1ebfn s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a Auto Scaling. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3, vi\u1ec7c c\u1ea5p ph\u00e1t t\u00e0i nguy\u00ean c\u1ed1 \u0111\u1ecbnh c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ee7.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26634\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-01.jpg\" alt=\"Auto Scaling 01\" width=\"750\" height=\"391\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-01.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/04\/Auto-Scaling-01-300x156.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Auto-Scaling-tren-cac-nen-tang-Cloud-pho-bien\"><\/span>Auto Scaling tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng Cloud ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y l\u1edbn (<a href=\"https:\/\/interdata.vn\/blog\/public-cloud-la-gi\/\">Public Cloud<\/a> Providers) \u0111\u1ec1u cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 Auto Scaling m\u1ea1nh m\u1ebd v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng, \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p ch\u1eb7t ch\u1ebd v\u00e0o h\u1ec7 sinh th\u00e1i c\u1ee7a h\u1ecd. M\u1eb7c d\u00f9 kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i l\u00e0 gi\u1ed1ng nhau, t\u00ean g\u1ecdi v\u00e0 c\u00e1ch tri\u1ec3n khai c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 kh\u00e1c bi\u1ec7t \u0111\u00f4i ch\u00fat.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Amazon-Web-Services-AWS\"><\/span>1. Amazon Web Services (AWS)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>AWS l\u00e0 m\u1ed9t trong nh\u1eefng nh\u00e0 ti\u00ean phong v\u1ec1 Auto Scaling. D\u1ecbch v\u1ee5 ch\u00ednh l\u00e0 <strong>Amazon EC2 Auto Scaling<\/strong>. N\u00f3 cho ph\u00e9p b\u1ea1n t\u1ea1o v\u00e0 qu\u1ea3n l\u00fd c\u00e1c <strong>Auto Scaling Groups (ASGs)<\/strong>. B\u1ea1n \u0111\u1ecbnh ngh\u0129a Launch Configurations ho\u1eb7c Launch Templates \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1ch t\u1ea1o instance EC2 m\u1edbi, v\u00e0 thi\u1ebft l\u1eadp c\u00e1c Scaling Policies (Dynamic, Scheduled, Predictive) d\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 t\u1eeb Amazon CloudWatch. ASG th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi Elastic Load Balancing (ELB) \u0111\u1ec3 ph\u00e2n ph\u1ed1i t\u1ea3i \u0111\u1ebfn c\u00e1c instance trong nh\u00f3m.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Microsoft-Azure\"><\/span>2. Microsoft Azure<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u00ean Azure, t\u00ednh n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>Azure Autoscale<\/strong>. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng co gi\u00e3n c\u00e1c <strong>Virtual Machine Scale Sets (VMSS)<\/strong> \u2013 m\u1ed9t c\u00e1ch \u0111\u1ec3 qu\u1ea3n l\u00fd m\u1ed9t nh\u00f3m c\u00e1c m\u00e1y \u1ea3o gi\u1ed1ng h\u1ec7t nhau. B\u1ea1n c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh c\u00e1c <strong>Autoscale settings<\/strong> d\u1ef1a tr\u00ean c\u00e1c metrics hi\u1ec7u su\u1ea5t (t\u1eeb Azure Monitor) ho\u1eb7c theo m\u1ed9t l\u1ecbch tr\u00ecnh c\u1ed1 \u0111\u1ecbnh. Azure Autoscale c\u0169ng c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c nh\u01b0 App Service Plans, Azure Functions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Google-Cloud-Platform-GCP\"><\/span>3. Google Cloud Platform (GCP)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>GCP cung c\u1ea5p t\u00ednh n\u0103ng Auto Scaling cho c\u00e1c <strong>Managed Instance Groups (MIGs)<\/strong>. B\u1ea1n \u0111\u1ecbnh ngh\u0129a m\u1ed9t <strong>Instance Template<\/strong> v\u00e0 sau \u0111\u00f3 c\u1ea5u h\u00ecnh <strong>Autoscaler<\/strong> cho MIG \u0111\u00f3. Autoscaler c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nhi\u1ec1u lo\u1ea1i t\u00edn hi\u1ec7u, bao g\u1ed3m CPU Utilization, kh\u1ea3 n\u0103ng ph\u1ee5c v\u1ee5 c\u1ee7a Load Balancer (HTTP(S) load balancing serving capacity), c\u00e1c ch\u1ec9 s\u1ed1 t\u1eeb Cloud Monitoring, ho\u1eb7c th\u1eadm ch\u00ed d\u1ef1a tr\u00ean \u0111\u1ed9 d\u00e0i h\u00e0ng \u0111\u1ee3i c\u1ee7a Cloud Pub\/Sub (Queue-based scaling).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-Kubernetes-K8s\"><\/span>4. Kubernetes (K8s)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kubernetes, n\u1ec1n t\u1ea3ng \u0111i\u1ec1u ph\u1ed1i container m\u00e3 ngu\u1ed3n m\u1edf ph\u1ed5 bi\u1ebfn, c\u0169ng c\u00f3 nhi\u1ec1u c\u01a1 ch\u1ebf Auto Scaling t\u00edch h\u1ee3p:<\/p>\n<ul>\n<li><strong>Horizontal Pod Autoscaler (HPA):<\/strong> T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng b\u1ea3n sao (replicas) c\u1ee7a m\u1ed9t Pod d\u1ef1a tr\u00ean c\u00e1c metrics nh\u01b0 CPU ho\u1eb7c Memory utilization, ho\u1eb7c c\u00e1c custom metrics. \u0110\u00e2y l\u00e0 c\u01a1 ch\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/li>\n<li><strong>Vertical Pod Autoscaler (VPA):<\/strong> T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh y\u00eau c\u1ea7u t\u00e0i nguy\u00ean (CPU, Memory requests) cho c\u00e1c container trong Pod. \u00cdt ph\u1ed5 bi\u1ebfn h\u01a1n HPA v\u00e0 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u Pod kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n<li><strong>Cluster Autoscaler:<\/strong> T\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng node (m\u00e1y ch\u1ee7 v\u1eadt l\u00fd ho\u1eb7c \u1ea3o) trong cluster Kubernetes c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean vi\u1ec7c c\u00f3 Pod n\u00e0o \u0111ang ch\u1edd \u0111\u01b0\u1ee3c l\u00ean l\u1ecbch (pending) do thi\u1ebfu t\u00e0i nguy\u00ean hay kh\u00f4ng.<\/li>\n<\/ul>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn n\u1ec1n t\u1ea3ng n\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ec7 sinh th\u00e1i \u0111\u00e1m m\u00e2y b\u1ea1n \u0111ang s\u1eed d\u1ee5ng. Tuy nhi\u00ean, c\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n v\u1ec1 c\u1ea5u h\u00ecnh metrics, thresholds v\u00e0 policies v\u1eabn kh\u00e1 t\u01b0\u01a1ng \u0111\u1ed3ng gi\u1eefa c\u00e1c n\u1ec1n t\u1ea3ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-Auto-Scaling-va-Load-Balancing\"><\/span>Ph\u00e2n bi\u1ec7t Auto Scaling v\u00e0 Load Balancing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi m\u1edbi t\u00ecm hi\u1ec3u v\u1ec1 cloud th\u01b0\u1eddng nh\u1ea7m l\u1eabn gi\u1eefa Auto Scaling v\u00e0 Load Balancing (C\u00e2n b\u1eb1ng t\u1ea3i), ho\u1eb7c kh\u00f4ng r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u g\u00f3p ph\u1ea7n x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 hi\u1ec7u n\u0103ng cao v\u00e0 t\u00ednh s\u1eb5n s\u00e0ng t\u1ed1t, ch\u00fang gi\u1ea3i quy\u1ebft hai v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau nh\u01b0ng l\u1ea1i b\u1ed5 tr\u1ee3 ch\u1eb7t ch\u1ebd cho nhau.<\/p>\n<p><strong>Load Balancing (C\u00e2n b\u1eb1ng t\u1ea3i) l\u00e0 g\u00ec?<\/strong> H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng Load Balancer nh\u01b0 m\u1ed9t ng\u01b0\u1eddi \u0111i\u1ec1u ph\u1ed1i giao th\u00f4ng th\u00f4ng minh \u0111\u1ee9ng tr\u01b0\u1edbc m\u1ed9t nh\u00f3m c\u00e1c m\u00e1y ch\u1ee7. Nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3 l\u00e0 <strong>ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp (incoming traffic) \u0111\u1ebfn nhi\u1ec1u m\u00e1y ch\u1ee7\/instance kh\u00e1c nhau<\/strong> m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, d\u1ef1a tr\u00ean c\u00e1c thu\u1eadt to\u00e1n \u0111\u1ecbnh s\u1eb5n (nh\u01b0 Round Robin, Least Connections).<\/p>\n<p>M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a Load Balancing l\u00e0:<\/p>\n<ol>\n<li><strong>Tr\u00e1nh qu\u00e1 t\u1ea3i<\/strong> cho b\u1ea5t k\u1ef3 m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u01a1n l\u1ebb n\u00e0o.<\/li>\n<li><strong>T\u0103ng t\u00ednh s\u1eb5n s\u00e0ng<\/strong> b\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn traffic \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 kh\u1ecfe m\u1ea1nh n\u1ebfu c\u00f3 m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i.<\/li>\n<li><strong>C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i<\/strong> chung c\u1ee7a \u1ee9ng d\u1ee5ng.<\/li>\n<\/ol>\n<p><strong>\u0110i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa Auto Scaling v\u00e0 Load Balancing:<\/strong><\/p>\n<ul>\n<li><strong>Load Balancer:<\/strong> T\u1eadp trung v\u00e0o vi\u1ec7c <strong>ph\u00e2n ph\u1ed1i t\u1ea3i<\/strong> \u0111\u1ebfn c\u00e1c t\u00e0i nguy\u00ean <i>hi\u1ec7n c\u00f3<\/i>. N\u00f3 kh\u00f4ng t\u1ef1 t\u1ea1o ra ho\u1eb7c x\u00f3a b\u1edbt t\u00e0i nguy\u00ean.<\/li>\n<li><strong>Auto Scaling:<\/strong> T\u1eadp trung v\u00e0o vi\u1ec7c <strong>\u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng<\/strong> t\u00e0i nguy\u00ean \u0111\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ee9c t\u1ea3i chung. N\u00f3 kh\u00f4ng tr\u1ef1c ti\u1ebfp ph\u00e2n ph\u1ed1i c\u00e1c y\u00eau c\u1ea7u ri\u00eang l\u1ebb.<\/li>\n<\/ul>\n<p><strong>M\u1ed1i quan h\u1ec7 b\u1ed5 tr\u1ee3:<\/strong><\/p>\n<p>Trong h\u1ea7u h\u1ebft c\u00e1c ki\u1ebfn tr\u00fac \u1ee9ng d\u1ee5ng web hi\u1ec7n \u0111\u1ea1i, <strong>Auto Scaling v\u00e0 Load Balancing ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau<\/strong> \u0111\u1ec3 mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u.<\/p>\n<p>H\u00e3y h\u00ecnh dung k\u1ecbch b\u1ea3n: Load Balancer \u0111\u1ee9ng \u1edf ph\u00eda tr\u01b0\u1edbc, nh\u1eadn t\u1ea5t c\u1ea3 traffic t\u1eeb ng\u01b0\u1eddi d\u00f9ng. Ph\u00eda sau Load Balancer l\u00e0 m\u1ed9t nh\u00f3m c\u00e1c m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi Auto Scaling (v\u00ed d\u1ee5: m\u1ed9t ASG trong AWS).<\/p>\n<ul>\n<li>Khi t\u1ea3i t\u0103ng l\u00ean, Auto Scaling s\u1ebd th\u00eam m\u00e1y ch\u1ee7 m\u1edbi v\u00e0o nh\u00f3m.<\/li>\n<li>Load Balancer s\u1ebd t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n m\u00e1y ch\u1ee7 m\u1edbi (th\u00f4ng qua health check) v\u00e0 b\u1eaft \u0111\u1ea7u g\u1eedi m\u1ed9t ph\u1ea7n traffic \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00f3.<\/li>\n<li>Khi t\u1ea3i gi\u1ea3m, Auto Scaling s\u1ebd x\u00f3a b\u1edbt m\u00e1y ch\u1ee7 kh\u1ecfi nh\u00f3m.<\/li>\n<li>Load Balancer s\u1ebd ng\u1eebng g\u1eedi traffic \u0111\u1ebfn m\u00e1y ch\u1ee7 s\u1eafp b\u1ecb x\u00f3a.<\/li>\n<\/ul>\n<p>Nh\u01b0 v\u1eady, Auto Scaling \u0111\u1ea3m b\u1ea3o lu\u00f4n c\u00f3 <i>\u0111\u1ee7<\/i> s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 c\u1ea7n thi\u1ebft, c\u00f2n Load Balancer \u0111\u1ea3m b\u1ea3o traffic \u0111\u01b0\u1ee3c <i>ph\u00e2n ph\u1ed1i \u0111\u1ec1u<\/i> \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 \u0111\u00f3. S\u1ef1 k\u1ebft h\u1ee3p n\u00e0y t\u1ea1o n\u00ean m\u1ed9t h\u1ec7 th\u1ed1ng v\u1eeba linh ho\u1ea1t, v\u1eeba \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Luu-y-khi-trien-khai-Auto-Scaling\"><\/span>L\u01b0u \u00fd khi tri\u1ec3n khai Auto Scaling<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Tri\u1ec3n khai Auto Scaling kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 b\u1eadt t\u00ednh n\u0103ng l\u00ean. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u v\u00e0 tr\u00e1nh nh\u1eefng h\u00e0nh vi kh\u00f4ng mong mu\u1ed1n, b\u1ea1n c\u1ea7n c\u00e2n nh\u1eafc m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 quan tr\u1ecdng v\u00e0 \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t (best practices) sau:<\/p>\n<p><strong>Ch\u1ecdn \u0111\u00fang Metrics v\u00e0 Thresholds:<\/strong><\/p>\n<p>Metrics b\u1ea1n ch\u1ecdn (CPU, RAM, Network, Queue&#8230;) ph\u1ea3i ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c \u0111i\u1ec3m ngh\u1ebdn (bottleneck) c\u1ee7a \u1ee9ng d\u1ee5ng. Thresholds (ng\u01b0\u1ee1ng) c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1eb7t h\u1ee3p l\u00fd &#8211; kh\u00f4ng qu\u00e1 nh\u1ea1y \u0111\u1ec3 tr\u00e1nh scale li\u00ean t\u1ee5c (thrashing), c\u0169ng kh\u00f4ng qu\u00e1 cao \u0111\u1ec3 tr\u00e1nh ph\u1ea3n \u1ee9ng ch\u1eadm tr\u1ec5. H\u00e3y th\u1eed nghi\u1ec7m v\u00e0 theo d\u00f5i \u0111\u1ec3 t\u00ecm ra gi\u00e1 tr\u1ecb t\u1ed1i \u01b0u.<\/p>\n<p><strong>C\u1ea5u h\u00ecnh Th\u1eddi gian ch\u1edd (Cooldown Periods) h\u1ee3p l\u00fd:<\/strong><\/p>\n<p>Sau khi m\u1ed9t h\u00e0nh \u0111\u1ed9ng scale (Out ho\u1eb7c In) di\u1ec5n ra, h\u1ec7 th\u1ed1ng c\u1ea7n m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00e1c metrics ph\u1ea3n \u00e1nh \u0111\u00fang t\u00ecnh tr\u1ea1ng m\u1edbi. Cooldown Period ng\u0103n Auto Scaling th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng scale ti\u1ebfp theo qu\u00e1 s\u1edbm trong giai \u0111o\u1ea1n n\u00e0y, tr\u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh sai l\u1ea7m.<\/p>\n<p><strong>Thi\u1ebft k\u1ebf \u1ee9ng d\u1ee5ng Stateless:<\/strong><\/p>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng l\u01b0u tr\u1ea1ng th\u00e1i ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c phi\u00ean l\u00e0m vi\u1ec7c tr\u00ean ch\u00ednh m\u00e1y ch\u1ee7 web (stateless) s\u1ebd d\u1ec5 d\u00e0ng cho vi\u1ec7c Scale Out\/In h\u01a1n r\u1ea5t nhi\u1ec1u. B\u1ea5t k\u1ef3 instance n\u00e0o c\u0169ng c\u00f3 th\u1ec3 x\u1eed l\u00fd b\u1ea5t k\u1ef3 y\u00eau c\u1ea7u n\u00e0o. N\u1ebfu \u1ee9ng d\u1ee5ng l\u00e0 stateful, b\u1ea1n c\u1ea7n c\u00e1c c\u01a1 ch\u1ebf ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u1ec3 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i phi\u00ean khi scale.<\/p>\n<p><strong>\u0110\u1ea3m b\u1ea3o th\u1eddi gian kh\u1edfi \u0111\u1ed9ng Instance nhanh:<\/strong><\/p>\n<p>Th\u1eddi gian t\u1eeb l\u00fac Auto Scaling quy\u1ebft \u0111\u1ecbnh Scale Out \u0111\u1ebfn khi instance m\u1edbi s\u1eb5n s\u00e0ng ph\u1ee5c v\u1ee5 (boot time + application startup time) c\u00e0ng ng\u1eafn c\u00e0ng t\u1ed1t. H\u00e3y t\u1ed1i \u01b0u h\u00f3a Image\/AMI, s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt pre-warming ho\u1eb7c caching \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 tr\u1ec5 n\u00e0y.<\/p>\n<p><strong>S\u1eed d\u1ee5ng Health Checks hi\u1ec7u qu\u1ea3:<\/strong><\/p>\n<p>T\u1eadn d\u1ee5ng health check c\u1ee7a c\u1ea3 Auto Scaling group v\u00e0 Load Balancer. Auto Scaling c\u1ea7n bi\u1ebft instance n\u00e0o kh\u1ecfe m\u1ea1nh \u0111\u1ec3 kh\u00f4ng x\u00f3a nh\u1ea7m, c\u00f2n Load Balancer c\u1ea7n bi\u1ebft \u0111\u1ec3 ch\u1ec9 g\u1eedi traffic \u0111\u1ebfn instance s\u1eb5n s\u00e0ng. C\u1ea5u h\u00ecnh health check ch\u00ednh x\u00e1c gi\u00fap t\u0103ng \u0111\u1ed9 tin c\u1eady.<\/p>\n<p><strong>Gi\u00e1m s\u00e1t v\u00e0 Tinh ch\u1ec9nh (Monitor &amp; Tune):<\/strong><\/p>\n<p>Auto Scaling kh\u00f4ng ph\u1ea3i l\u00e0 &#8220;c\u1ea5u h\u00ecnh m\u1ed9t l\u1ea7n r\u1ed3i qu\u00ean&#8221;. H\u00e3y li\u00ean t\u1ee5c gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, xem l\u1ea1i l\u1ecbch s\u1eed scale, ph\u00e2n t\u00edch c\u00e1c metrics li\u00ean quan. D\u1ef1a tr\u00ean d\u1eef li\u1ec7u th\u1ef1c t\u1ebf, h\u00e3y tinh ch\u1ec9nh l\u1ea1i c\u00e1c policies, thresholds, cooldown periods \u0111\u1ec3 ng\u00e0y c\u00e0ng t\u1ed1i \u01b0u h\u01a1n.<\/p>\n<p>\u00c1p d\u1ee5ng nh\u1eefng l\u01b0u \u00fd n\u00e0y s\u1ebd gi\u00fap h\u1ec7 th\u1ed1ng Auto Scaling c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0, hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady, th\u1ef1c s\u1ef1 mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch nh\u01b0 mong \u0111\u1ee3i.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-ve-Auto-Scaling-FAQ\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Auto Scaling (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi t\u00ecm hi\u1ec3u v\u1ec1 Auto Scaling, c\u00f3 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 gi\u1ea3i \u0111\u00e1p cho m\u1ed9t s\u1ed1 th\u1eafc m\u1eafc ph\u1ed5 bi\u1ebfn:<\/p>\n<p><strong>Q1: S\u1eed d\u1ee5ng Auto Scaling c\u00f3 m\u1ea5t th\u00eam ph\u00ed kh\u00f4ng?<\/strong><\/p>\n<p><strong>A:<\/strong> B\u1ea3n th\u00e2n t\u00ednh n\u0103ng Auto Scaling tr\u00ean h\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y l\u1edbn nh\u01b0 AWS, Azure, GCP th\u01b0\u1eddng <strong>kh\u00f4ng t\u00ednh ph\u00ed ri\u00eang<\/strong>. Tuy nhi\u00ean, b\u1ea1n s\u1ebd <strong>tr\u1ea3 ti\u1ec1n cho c\u00e1c t\u00e0i nguy\u00ean th\u1ef1c t\u1ebf m\u00e0 Auto Scaling kh\u1edfi ch\u1ea1y v\u00e0 qu\u1ea3n l\u00fd<\/strong>, v\u00ed d\u1ee5 nh\u01b0 chi ph\u00ed gi\u1edd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00e1y ch\u1ee7 \u1ea3o (VM\/EC2 instance), chi ph\u00ed l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, chi ph\u00ed \u1ed5 \u0111\u0129a&#8230; Do \u0111\u00f3, chi ph\u00ed t\u1ed5ng th\u1ec3 s\u1ebd t\u0103ng ho\u1eb7c gi\u1ea3m t\u00f9y theo s\u1ed1 l\u01b0\u1ee3ng t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i m\u1ed7i th\u1eddi \u0111i\u1ec3m. M\u1ee5c ti\u00eau c\u1ee7a Auto Scaling l\u00e0 gi\u00fap b\u1ea1n tr\u1ea3 ti\u1ec1n <i>\u0111\u00fang<\/i> v\u1edbi nhu c\u1ea7u s\u1eed d\u1ee5ng, tr\u00e1nh l\u00e3ng ph\u00ed.<\/p>\n<p><strong>Q2: C\u1ea7n ki\u1ebfn th\u1ee9c k\u1ef9 thu\u1eadt chuy\u00ean s\u00e2u \u0111\u1ec3 c\u1ea5u h\u00ecnh Auto Scaling kh\u00f4ng?<\/strong><\/p>\n<p><strong>A:<\/strong> \u0110\u1ec3 c\u1ea5u h\u00ecnh Auto Scaling hi\u1ec7u qu\u1ea3, b\u1ea1n c\u1ea7n c\u00f3 <strong>hi\u1ec3u bi\u1ebft c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, ki\u1ebfn tr\u00fac \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u n\u0103ng quan tr\u1ecdng<\/strong>. Tuy nhi\u00ean, c\u00e1c nh\u00e0 cung c\u1ea5p cloud ng\u00e0y c\u00e0ng cung c\u1ea5p giao di\u1ec7n qu\u1ea3n l\u00fd tr\u1ef1c quan v\u00e0 c\u00e1c c\u1ea5u h\u00ecnh m\u1eb7c \u0111\u1ecbnh h\u1ee3p l\u00fd, gi\u00fap vi\u1ec7c b\u1eaft \u0111\u1ea7u tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. \u0110\u1ed1i v\u1edbi c\u00e1c c\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p ho\u1eb7c t\u1ed1i \u01b0u s\u00e2u, ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng v\u00e0 m\u1ea1ng s\u1ebd h\u1eefu \u00edch.<\/p>\n<p><strong>Q3: Auto Scaling ph\u1ea3n \u1ee9ng nhanh nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n<p><strong>A:<\/strong> T\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng c\u1ee7a Auto Scaling (\u0111\u1ed9 tr\u1ec5 t\u1eeb khi c\u1ea7n scale \u0111\u1ebfn khi t\u00e0i nguy\u00ean m\u1edbi s\u1eb5n s\u00e0ng) <strong>ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1<\/strong>:<\/p>\n<ul>\n<li><strong>T\u1ea7n su\u1ea5t thu th\u1eadp metrics:<\/strong> Kho\u1ea3ng th\u1eddi gian gi\u1eefa c\u00e1c l\u1ea7n l\u1ea5y m\u1eabu ch\u1ec9 s\u1ed1 (v\u00ed d\u1ee5: 1 ph\u00fat hay 5 ph\u00fat).<\/li>\n<li><strong>Th\u1eddi gian \u0111\u00e1nh gi\u00e1 ng\u01b0\u1ee1ng:<\/strong> Ch\u00ednh s\u00e1ch th\u01b0\u1eddng y\u00eau c\u1ea7u metric duy tr\u00ec tr\u00ean\/d\u01b0\u1edbi ng\u01b0\u1ee1ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh (v\u00ed d\u1ee5: 5 ph\u00fat li\u00ean t\u1ee5c).<\/li>\n<li><strong>Th\u1eddi gian kh\u1edfi \u0111\u1ed9ng instance (Boot time):<\/strong> Th\u1eddi gian c\u1ea7n \u0111\u1ec3 m\u00e1y ch\u1ee7 \u1ea3o m\u1edbi kh\u1edfi \u0111\u1ed9ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 \u1ee9ng d\u1ee5ng.<\/li>\n<li><strong>Th\u1eddi gian Health Check:<\/strong> Th\u1eddi gian c\u1ea7n \u0111\u1ec3 h\u1ec7 th\u1ed1ng x\u00e1c nh\u1eadn instance m\u1edbi kh\u1ecfe m\u1ea1nh.<\/li>\n<li><strong>Cooldown Period:<\/strong> Th\u1eddi gian ch\u1edd gi\u1eefa c\u00e1c l\u1ea7n scale. T\u1ed5ng c\u1ed9ng, \u0111\u1ed9 tr\u1ec5 c\u00f3 th\u1ec3 t\u1eeb v\u00e0i ph\u00fat \u0111\u1ebfn l\u00e2u h\u01a1n. Predictive v\u00e0 Scheduled Scaling c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m \u0111\u1ed9 tr\u1ec5 n\u00e0y.<\/li>\n<\/ul>\n<p><strong>Q4: Auto Scaling c\u00f3 th\u1ec3 d\u00f9ng cho Database kh\u00f4ng?<\/strong><\/p>\n<p><strong>A:<\/strong> Vi\u1ec7c \u00e1p d\u1ee5ng Auto Scaling tr\u1ef1c ti\u1ebfp cho c\u00e1c database truy\u1ec1n th\u1ed1ng (\u0111\u1eb7c bi\u1ec7t l\u00e0 primary node\/master) <strong>th\u01b0\u1eddng ph\u1ee9c t\u1ea1p h\u01a1n<\/strong> so v\u1edbi \u1ee9ng d\u1ee5ng stateless v\u00ec v\u1ea5n \u0111\u1ec1 \u0111\u1ed3ng b\u1ed9 d\u1eef li\u1ec7u v\u00e0 duy tr\u00ec tr\u1ea1ng th\u00e1i. Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch \u00e1p d\u1ee5ng:<\/p>\n<ul>\n<li><strong>Scale Read Replicas:<\/strong> Auto Scaling th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng t\u0103ng\/gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng b\u1ea3n sao ch\u1ec9 \u0111\u1ecdc (read replicas) c\u1ee7a database \u0111\u1ec3 x\u1eed l\u00fd t\u1ea3i \u0111\u1ecdc t\u0103ng cao.<\/li>\n<li><strong>S\u1eed d\u1ee5ng D\u1ecbch v\u1ee5 Database Managed:<\/strong> Nhi\u1ec1u d\u1ecbch v\u1ee5 database qu\u1ea3n l\u00fd tr\u00ean cloud (nh\u01b0 AWS RDS Aurora, Azure SQL Database Hyperscale, Google Cloud Spanner) \u0111\u00e3 t\u00edch h\u1ee3p s\u1eb5n c\u00e1c c\u01a1 ch\u1ebf co gi\u00e3n (th\u01b0\u1eddng l\u00e0 c\u1ea3 v\u1ec1 compute v\u00e0 storage) tinh vi h\u01a1n, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho database. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ket-luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Auto Scaling<\/strong> \u0111\u00e3 th\u1ef1c s\u1ef1 c\u00e1ch m\u1ea1ng h\u00f3a c\u00e1ch ch\u00fang ta qu\u1ea3n l\u00fd v\u00e0 v\u1eadn h\u00e0nh h\u1ea1 t\u1ea7ng tr\u00ean n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y. N\u00f3 kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m xa l\u1ea1 m\u00e0 \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i, linh ho\u1ea1t v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed.<\/p>\n<p>Qua b\u00e0i vi\u1ebft n\u00e0y, hy v\u1ecdng b\u1ea1n \u0111\u00e3 c\u00f3 c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng Auto Scaling l\u00e0 g\u00ec, nh\u1eefng l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i m\u00e0 n\u00f3 mang l\u1ea1i nh\u01b0 <strong>t\u1ed1i \u01b0u chi ph\u00ed, \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng, t\u0103ng c\u01b0\u1eddng t\u00ednh s\u1eb5n s\u00e0ng v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u1ea3n l\u00fd<\/strong>. Ch\u00fang ta c\u0169ng \u0111\u00e3 c\u00f9ng t\u00ecm hi\u1ec3u v\u1ec1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, c\u00e1c lo\u1ea1i h\u00ecnh ph\u1ed5 bi\u1ebfn, tr\u01b0\u1eddng h\u1ee3p n\u00ean \u00e1p d\u1ee5ng v\u00e0 c\u00e1ch n\u00f3 t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c nh\u01b0 Load Balancing.<\/p>\n<p>Hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng Auto Scaling \u0111\u00fang c\u00e1ch kh\u00f4ng ch\u1ec9 gi\u00fap \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh h\u01a1n tr\u01b0\u1edbc s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u00e0 c\u00f2n gi\u1ea3i ph\u00f3ng ngu\u1ed3n l\u1ef1c IT, gi\u00fap doanh nghi\u1ec7p t\u1eadp trung v\u00e0o vi\u1ec7c ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m v\u00e0 d\u1ecbch v\u1ee5 c\u1ed1t l\u00f5i. Trong k\u1ef7 nguy\u00ean s\u1ed1 v\u1edbi y\u00eau c\u1ea7u ng\u00e0y c\u00e0ng cao v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady, Auto Scaling ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a gi\u00fap h\u1ea1 t\u1ea7ng c\u1ee7a b\u1ea1n lu\u00f4n s\u1eb5n s\u00e0ng cho m\u1ecdi th\u1eed th\u00e1ch v\u00e0 c\u01a1 h\u1ed9i.<\/p>\n<p>N\u1ebfu b\u1ea1n \u0111ang v\u1eadn h\u00e0nh \u1ee9ng d\u1ee5ng tr\u00ean cloud, h\u00e3y b\u1eaft \u0111\u1ea7u t\u00ecm hi\u1ec3u v\u00e0 th\u1eed nghi\u1ec7m c\u00e1ch c\u1ea5u h\u00ecnh Auto Scaling tr\u00ean n\u1ec1n t\u1ea3ng b\u1ea1n \u0111ang s\u1eed d\u1ee5ng. Kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a s\u1ef1 t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 linh ho\u1ea1t m\u00e0 n\u00f3 mang l\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Website c\u1ee7a b\u1ea1n th\u01b0\u1eddng xuy\u00ean ch\u1eadm ho\u1eb7c s\u1eadp v\u00e0o gi\u1edd cao \u0111i\u1ec3m? Chi ph\u00ed h\u1ea1 t\u1ea7ng cloud m\u1ed7i th\u00e1ng l\u00e0 m\u1ed9t con s\u1ed1 kh\u00f3 \u0111o\u00e1n?\u00a0Auto Scaling\u00a0ch\u00ednh l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea1n c\u1ea7n t\u00ecm. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a\u00a0InterData\u00a0s\u1ebd gi\u1ea3i th\u00edch c\u1eb7n k\u1ebd\u00a0Auto Scaling l\u00e0 g\u00ec, t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 nh\u01b0 th\u1ebf n\u00e0o? C\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0<\/p>\n","protected":false},"author":2,"featured_media":26650,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"class_list":["post-26631","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-server"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=26631"}],"version-history":[{"count":6,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26631\/revisions"}],"predecessor-version":[{"id":35741,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/26631\/revisions\/35741"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/26650"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=26631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=26631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=26631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}