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 the limitations of s3fs and goofys for large‑file backup scenarios, explains the design and implementation of the US3FS FUSE‑based file system, and presents benchmark results showing its superior performance and lower resource consumption.
This article explains the limitations of NAT and FULLNAT load‑balancing models, introduces DR and TUN modes that let real servers reply directly to clients, and details the required ARP and loopback configurations to hide VIPs and reduce bottlenecks.
This article explains why many enterprises still rely on on‑premise data centers, introduces three hybrid‑cloud deployment models, and provides detailed solutions for extending computing power, storage backup, security protection, new product capabilities, and smooth business migration using a hybrid cloud approach.
UCloud’s US3 archive storage leverages high‑density SMR drives combined with JBOD architecture and a custom IO‑scheduling algorithm to slash hardware CAPEX by up to 80%, reduce OPEX electricity costs, and maintain data reliability through embedded metadata and dual‑head redundancy.
This article details how UCloud’s USnap service extends the UDataArk CDP technology to provide low‑cost, second‑level snapshots for ordinary, SSD, and RSSD cloud disks, describing the client‑side IO capture, Stream‑based front layer redesign, Arker storage architecture, and efficient rollback mechanisms.
This article explains how two computers locate each other on the Internet using IP, MAC, and port numbers, details the ARP protocol and routing table lookup, and then examines LVS load‑balancing mechanisms, comparing NAT and FULLNAT models and their packet‑translation processes.
This article explains the fundamentals of RTC, distinguishes it from traditional streaming, highlights WebRTC's cross‑platform, plugin‑free benefits, and shows how low‑latency real‑time communication can enhance interactive applications.
This article explains how UCloud's Serverless container product Cube integrates Virtual Kubelet with Kubernetes, why kube-proxy is unsuitable for lightweight serverless VMs, and how an eBPF‑based Rust proxy (cproxy) provides efficient service discovery and superior performance across different service scales.
This article explains practical techniques for handling dirty data, guaranteeing data consistency, and performing validation during the data cleaning and cut‑over phases of a cross‑cloud migration, including read‑only database accounts, process termination, and network ACL isolation.
This article explains the challenges of cross‑cloud migration, outlines three resource categories, details MySQL, file and object storage synchronization methods, presents practical tools and validation techniques, and shares real‑world case studies to ensure data integrity and efficiency.
