A little practice. A clearer next step.

Design a Globally Distributed Rate Limiter Supporting 100M Requests Per Second

Key Architectural Insight: Centralizing counters in a single global Redis creates unacceptable cross-region WAN latency (100ms+). The optimal design uses local in-memory token buckets synchronized asynchronously via distributed sliding-window consensus or token batching.

Technical Round 3 (System Design) · Shared by Priya Sharma