Pattern series

Real-Time Rules/Policy Engine

3 System Design questions share this exact tag. Use the closely related series below for a fuller drill.

  1. 01

    Spend Management System

    Design a corporate spend management platform like Brex or Ramp — every card swipe must be authorized or declined against a live policy engine in under...

    Brex
    Preview
  2. 02

    Fraud Detection

    Design a real-time ML fraud/risk scoring system that scores payment transactions in under 100 ms.

    Stripe
    Preview
  3. 03

    LLM Guardrails Pipeline

    Design a guardrails pipeline that wraps an LLM application with layered input and output safety.

    NVIDIA / Meta
    Preview