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Top Architect
Top Architect
May 24, 2023 · Backend Development

Design and Implementation of Full-Scale Message Push Using a Public Mailbox in Baidu's IM System

The article explains Baidu's need for low‑cost, high‑latency full‑user notifications, analyzes existing IM architecture limitations, introduces a public mailbox read‑expansion approach, compares three push strategies, and details the design, management, caching, tiered release, advantages, drawbacks, and real‑world applications of this solution.

Messagingbackend architecturefull push
0 likes · 15 min read
Design and Implementation of Full-Scale Message Push Using a Public Mailbox in Baidu's IM System
Baidu Tech Salon
Baidu Tech Salon
May 10, 2023 · Backend Development

Full Volume Message Push Implementation Based on Public Mailbox at Baidu

Baidu’s full‑volume push system leverages a public‑mailbox architecture that merges a single shared mailbox with users’ private mailboxes during retrieval, enabling low‑disturbance, high‑speed delivery to over 600 million monthly active users while reducing write costs, as demonstrated by three pandemic‑policy messages reaching more than 200 million users within three days.

Baidu AppInstant MessagingRead Diffusion
0 likes · 13 min read
Full Volume Message Push Implementation Based on Public Mailbox at Baidu