This article explains Alibaba's multi‑site high‑availability architecture, covering its origins after Double 11 bottlenecks, core principles like decentralization and consistency‑availability trade‑offs, layered design from traffic routing to data storage, and a real‑world deployment example.
This article explains the challenges of achieving high availability in unreliable environments, introduces disaster‑tolerance concepts and RPO/RTO metrics, describes Alibaba Cloud's AHAS‑MSHA multi‑site solution and its key features, and walks through two e‑commerce case studies that demonstrate implementation steps, fault‑injection drills, and recovery verification.
The article introduces JD's overseas product system, detailing its goals of global availability, multilingual editing and storage, multi‑site management, site‑specific sales status, and automated cross‑platform integration to reduce operational costs and support international e‑commerce expansion.
The article explains how modern call centers evolve to multi‑site active‑active deployments, detailing the network design, disaster‑recovery mechanisms, login and monitoring logic, key features supporting automatic failover for thousands of agents, and future expansion possibilities.
