UCloud is a leading neutral cloud provider in China, developing its own IaaS, PaaS, AI service platform, and big data exchange platform, and delivering comprehensive industry solutions for public, private, hybrid, and dedicated clouds.
This article examines a recent 1.2 Tbps DDoS assault on a major UCloud client, detailing the attack timeline, mixed flood and connection‑exhaustion techniques, geographic and device source distribution, and UCloud’s comprehensive mitigation strategies and best‑practice recommendations for robust information security.
This article explains how UCloud’s archival storage leverages inexpensive SMR disks, JBOD hardware, erasure‑coding blobs, and a power‑aware scheduling strategy to store massive cold data cheaply while still providing flexible, near‑real‑time retrieval when needed.
This article explains how UCloud’s UKV-Meta leverages a customized URocksDB storage engine, addresses RocksDB’s durability and read‑performance drawbacks with a Share‑Nothing architecture, introduces hotspot splitting, hot‑standby replication, and seamless data migration to achieve high availability and scalability in cloud object storage.
UCloud’s US3 object storage metadata service, originally built on a chained MongoDB architecture, faced scalability, performance, and cost challenges, prompting a redesign that introduces a high‑compatibility DB‑Gateway, a distributed KV store (UKV) with custom RocksDB, delivering faster reads, zero list‑service latency, 80% cost reduction, and simpler operations.
This article explains the challenges of bulk cloud VM provisioning, compares COW and ROW snapshot techniques, and details a ROW‑based architecture that reduces clone time to milliseconds, enabling thousands of VMs to be launched within minutes.
This article explains how UCloud’s Big Bang system automates data‑center network construction—from manual wiring and IP allocation to layered design, resource allocation, configuration generation, and zero‑touch provisioning—enabling a ten‑thousand‑server network to be deployed in just a few hours.
This article explores UCloud’s comprehensive developer‑tool ecosystem, detailing its layered product architecture, open‑source principles, and a code‑generation pipeline that transforms API specifications into SDKs, CLIs, CDKs, and SaaS tools, dramatically reducing development costs and enhancing cloud‑native productivity.
This article walks you through the complete installation and configuration of UCloud's free USDP (UCloud Data Platform) on a three‑node CentOS 7.2‑7.6 cluster, covering environment preparation, package download, repair scripts, MySQL setup, service startup, web UI activation, monitoring, and a quick Hive query example.
This article walks through a practical setup of LVS DR mode load balancing on four UCloud servers, covering network configuration, ARP tweaks, ipvsadm rules, VIP assignment, troubleshooting steps, and implementing high‑availability with Keepalived, complete with command examples and visual screenshots.
This tutorial walks through building a three‑node UCloud lab, installing ipvsadm, configuring NAT and TUNNEL load‑balancing modes with LVS, adjusting routing and ARP settings, and verifying the setup using ipvsadm commands and curl requests.
