Sohu Tech Products
May 19, 2021 · Backend Development
Design Principles and Architecture of Large‑Scale Instant Messaging Systems
This article explores core concepts, ID design, read/write fan-out, push‑pull models, and industry implementations for large‑scale instant messaging systems, discussing trade‑offs in message diffusion, unique identifier strategies, real‑time delivery, ordering, unread counts, multi‑device sync, and deployment considerations.
ID generationInstant MessagingReal-time Messaging
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