Alipay Double 11 Architecture: LDC & Unitization Guide
← Series hub ← Prev • Next → Answer-first: Alipay’s Logical Data Center (LDC) unitization architecture partitions database tables and application servers into self-contained “RZone” units based on user ID hashes. This multi-active setup bounds failure blast radiuses and allows horizontal scaling across multiple data centers. Prerequisite: Phase 1: Timeline and Scale Evolution This phase focuses on the architectural blueprint that enables planetary scaling while preserving absolute transactional correctness and operational control. The core design philosophy is: scale through containment, not coordination. ...