How Do Projects Achieve High Availability Without Multi‑Site Active‑Active? – A Meituan Interview Question

The article analyzes high‑availability concepts, from single‑machine risks to multi‑site active‑active architectures, compares cold and hot backup strategies, discusses network latency challenges, and presents Ele.me’s cell‑based, sharding‑driven multi‑region solution with concrete examples, tables, and code snippets.

cell-based architecturedata replicationdisaster recovery

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How Do Projects Achieve High Availability Without Multi‑Site Active‑Active? – A Meituan Interview Question

JD Retail Technology

Feb 27, 2018 · Cloud Computing

JD.com's Archimedes: A Comprehensive Data Center Operating System

JD.com's Archimedes is a data center operating system that provides one-click scaling, intelligent scheduling, mixed deployment, and multi-site active-active capabilities, significantly improving resource utilization and reducing IT costs.

ArchimedesJD.comcontainer orchestration

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JD.com's Archimedes: A Comprehensive Data Center Operating System

21CTO

Jul 30, 2016 · Operations

Building a 3‑Minute Fault Detection, 5‑Minute Recovery HA System for Games

This article explains how Alibaba’s NineGame platform achieved ultra‑high availability by shifting from system‑centric to business‑centric design, defining measurable goals (3‑minute issue detection, 5‑minute recovery, bi‑monthly incidents) and implementing a layered, automated, visual monitoring, client‑side retry, HTTP‑DNS, functional isolation, and multi‑site active‑active architecture.

Operationsbusiness‑centric designfault tolerance

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Building a 3‑Minute Fault Detection, 5‑Minute Recovery HA System for Games