Category Archives: System Design
Design an Uber Demand Prediction and Driver Repositioning System
Interview question:Uber predicts that ride demand in a particular area will increase significantly in the next 20 minutes. How would you design an AI system that predicts demand and proactively moves drivers to that area? This is a classic marketplace + machine-learning system design question. The interviewer is testing whether you can go beyond “build…
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The UUID Primary Key Problem That Shows Up at 200 Million Rows
A primary-key lookup can still become expensive when random UUIDs, cache pressure, and table layout collide. Here is how to diagnose the evidence before changing your schema.
Crafting a Scalable Real-Time Interaction System with Redis: A Deep Dive into Integrating Character, Environment, and LLM Services
Understanding the Problem 🎮 What is the System? This system is designed to manage real-time interactions within a virtual environment, where users control virtual characters, interact with the environment, and receive responses from a machine learning model (LLM). The goal is to maintain high performance and scalability while ensuring that interactions are processed instantly, reflecting…