EP322 ｜系統設計懶懶學 – 每秒處理 10 億次請求！Meta 家族如何設計動態牆架構？揭開大明星帳號處理與推播的技術真相

from AI懶人報 · host 湯懶懶

本集將拆解社群媒體背後十億級用戶的「動態牆（Feed）」架構，帶你揭開如何在半秒內完成複雜排序與推送的技術秘密。🏗️ 💡 讀寫分離（CQRS）架構 👉 將頻繁的讀取與繁重的寫入物理拆分，是支撐大規模高併發流量的基石。 💡 推送模式（Fan-out）優化 👉 將「讀取時排序」的成本轉移至「寫入時推送」，讓用戶讀取體驗從秒級躍升至毫秒級。 💡 針對明星帳號的混合策略 👉 透過動態切換拉取模式，解決單一帳號追蹤者過多導致的系統崩潰風險。 💡 非同步解耦與最終一致性 👉 利用訊息佇列處理繁重任務，確保用戶操作即時回饋，並以一致性換取系統穩定。 💡 技術決策中的產品思維 👉 極致的系統設計不在於堆疊硬體，而是透過業務規則調整，在複雜度與效能間取得完美折衷。 --- 📎 參考資料： Design FB News Feed System Design Interview w/ ex: Meta Senior Manager（2025/6/5・107,384 views） https://www.youtube.com/watch?v=Qj4-GruzyDU Design Scalable News Feed System Similar to Instagram, Facebook & Twitter | System Design（2022/4/13・32,135 views） https://www.youtube.com/watch?v=Ox-aXX2qekU Facebook News Feed System Design | Mock Interview FAANG 2025（2025/7/11・29,000 views） https://www.youtube.com/watch?v=DIiLDIYhYrg Designing INSTAGRAM: System Design of News Feed（2019/1/12・736,406 views） https://www.youtube.com/watch?v=QmX2NPkJTKg 歡迎請我喝杯咖啡，幫助我繼續把節目做得更好唷～！ 👉 https://buymeacoffee.com/ailanrenbao -- Hosting provided by SoundOn

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EP322 ｜系統設計懶懶學 – 每秒處理 10 億次請求！Meta 家族如何設計動態牆架構？揭開大明星帳號處理與推播的技術真相

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