Category: System Design

A complete, from-scratch walkthrough of how a marketplace platform lets customers earn points from purchases and redeem them across a wide range of rewards — covering ledger architecture, real-time balance tracking, redemption orchestration, fraud prevention, scaling, and the production patterns behind it.

A complete, ground-up walkthrough of how to build a real-time score and stats system that can serve tens of millions of fans watching the same match at the same second — covering architecture, data flow, databases, caching, scaling, reliability, and the trade-offs behind every decision.