Unverified50% confidenceFactExact time
In its early days, Instagram adopted a PostgreSQL + hash sharding strategy based on user IDs, distributing data across dozens of physical database instances to support its growth from zero to hundreds of millions of users.
1
Sources
50%
Confidence
Long-term
Relevance
8/4/2026
First Seen
Sources
System Design Primer：GitHub 36万星系统设计学习指南深度解析
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