Cambridge Mofang Notes

Sep 7, 2026 · Backend Development

Points System Architecture: Concurrency, Batch Expiration & Idempotent Reconciliation

This article walks through designing a points system architecture, starting from a concrete scenario of consuming 80 points across two batches with retries and refunds, covering data models, idempotency keys, local transactions, cache-aside, event-driven reconciliation, scaling strategies, and evolutionary deployment phases.