Bilibili Tech
Jan 24, 2025 · Operations
Design and Implementation of a CDN Edge‑Node Scheduling System for Bilibili Live Streaming
The paper presents Bilibili’s multi‑layer CDN edge‑node scheduling system, which groups heterogeneous nodes by quality and price, uses cost‑aware and resource‑aware heuristics—including maximum‑flow regional borrowing and contextual‑bandit utilization prediction—to allocate bandwidth per business, achieving a 43 % bandwidth reuse increase, 33 % coverage boost, and markedly lower stall rates.
BilibiliCost OptimizationLive Streaming
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