Architect

Nov 26, 2023 · Databases

How REDtao Powers Xiaohongshu’s Trillion‑Edge Social Graph: Architecture, Performance, and Lessons

This article details the design and implementation of REDtao, a self‑built graph storage system for Xiaohongshu that replaces MySQL with a three‑layer architecture, distributed cache, cross‑cloud multi‑active support, and delivers trillion‑edge scale, 150 M QPS, 90% cache hit rate, and significant cost reductions.