Baidu Intelligent Testing

Jul 29, 2021 · Backend Development

Building High‑Availability Architecture for Baidu Feed Online Recommendation System

This article describes how Baidu engineered a flexible, multi‑level fault‑tolerant architecture—including dynamic retry scheduling, multi‑recall coordination, ranking layer degradation, and cross‑IDC multi‑master storage—to achieve five‑nine availability for its massive feed recommendation service.