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AI · December 9, 2025

System Design Sandbox

Interactive system design practice with AI feedback

System Design Sandbox launched on December 9, 2025 with 3 votes, #4,354 of 11,628 launches that month.

Visit systemdesignsandbox.com ↗System Design Sandbox alternatives

What it does

System Design Sandbox is the interactive playground for system design interviews. Drag and drop real components (load balancers, caches, Kafka, shards, etc.), build your architecture, and get instant AI feedback that catches missing rate limiters, single points of failure, wrong consistency choices, and more with clear fixes. TinyURL scenario is live and 100% free, no signup. More scenarios drop every week. Stop drawing boxes on Excalidraw. Start practicing the way you think.

Practice system design interviews with interactive scenarios. AI-powered feedback on distributed systems, scalability & architecture design.

Learn distributed systems, scalability patterns, and architecture design through hands-on practice. Drag components, reason through production architectures, and get instant feedback on your designs. Start by defining what your system must do. Describe the core features and user capabilities. An AI interviewer guides you with follow-up questions to ensure you cover all essential requirements. "Users can shorten long URLs and get redirected when visiting short links..." "What about link expiration? Should users be able to set custom aliases?" Define performance constraints: latency targets, throughput goals, and availability requirements. The AI interviewer ensures you think about…from systemdesignsandbox.com

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