https://www.chenk.top/en/tags/load-balancing/Recent content in Load Balancing on Chen Kai BlogHugoenSat, 12 Jul 2025 09:00:00 +0000https://www.chenk.top/en/system-design/02-dns-cdn-load-balancing/Sat, 12 Jul 2025 09:00:00 +0000https://www.chenk.top/en/system-design/02-dns-cdn-load-balancing/<p>In 2017, a single misconfigured DNS record at a major cloud provider took down a significant portion of the internet for several hours. Thousands of websites became unreachable — not because their servers were down, but because the system that translates domain names into IP addresses stopped working correctly. The incident was a stark reminder that the infrastructure we take for granted — DNS, CDN, load balancers — is the foundation everything else rests on.</p>https://www.chenk.top/en/cloud-computing/networking-sdn/Tue, 18 Apr 2023 09:00:00 +0000https://www.chenk.top/en/cloud-computing/networking-sdn/<p><figure class="article-figure"> <img src="https://blog-pic-ck.oss-cn-beijing.aliyuncs.com/posts/en/cloud-computing/networking-sdn/illustration_1.png" alt="Cloud Computing (5): Cloud Network Architecture and SDN — Chapter overview" loading="lazy" decoding="async" class="content-image"> </figure> </p> <p>A cloud platform is essentially a network with attached computers. The compute layer scales by adding servers; the storage layer scales by adding disks; the <em>network</em> layer integrates these into a single, coherent system. Get the network right, and the rest of the stack feels effortless. Get it wrong — a missing route, a 5-tuple mismatch in a security group, or an under-provisioned load balancer — and the whole platform goes dark.</p>