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Sep 29, 2020 · Backend Development

How JD Daojia Scaled Its Order System to Billion‑Scale: Architecture, Evolution, and High‑Availability Practices

This article details JD Daojia's order system architecture, tracing its evolution from a monolithic design to a micro‑service, multi‑cluster setup with Redis, MySQL, and Elasticsearch, and explains the high‑availability, disaster‑recovery, capacity‑planning, and alerting techniques that keep billions of orders running smoothly.