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System Design Interview

Non-Functional Requirements Network Communication Data Modeling API Design Consistent Hashing Numbers to Know

Database Blob Store Load Balancer Content Delivery Network Distributed Cache Distributed Message Queue Pub/Sub Rate Limiter

Design a URL Shortener Design a Distributed KV Store Design WhatsApp Design Twitter Design YouTube Design a Payment System Design Yelp Design Uber Design a Webhook System Design ChatGPT Design Google Docs Design Google Calendar Design an AI Rate Limiter Design a News Aggregator Design an Ad Event Aggregator Design a Hotel Booking System Design a Crossword Puzzle Solver Design a Cloud IDE

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Cloud IDE (Sandbox Code Execution)

Asked by:OpenAI

Design a cloud-based IDE similar to Google Colab, Replit, or GitHub Codespaces. Users can write, execute code, and see real-time output—all in the browser without local setup.

This problem tests your ability to design systems with resource management, real-time streaming, and multi-tenancy isolation. The core challenges are VM/container lifecycle management and efficient log streaming at scale.

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Design a Crossword Puzzle Solver

Interviews at:OpenAI·Anthropic·xAI·Databricks·Perplexity·Stripe·Rippling