User Profile and API Quota System

User Profile and API Quota System

Design a high-scale user management system for a global AI platform. The system must handle user profiles, flexible preference configurations (e.g., model parameters), multi-device session management with revocation capabilities, and a high-throughput API quota enforcement engine. Ensure the design can handle 100M+ users with low-latency quota checks (<10ms) and high availability, while discussing the trade-offs between strict consistency and system performance.
PostgreSQLRedisJSONBLuaKubernetesJWTAPI Gateway
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