Scalcraft

What it does

Scalcraft is an interactive platform designed to help engineers master system design. By leveraging advanced AI models, it provides an intelligent canvas where you can practice architecture planning, map out both high-level and low-level designs, and receive real-time, actionable feedback. Whether you are preparing for your next technical interview or refining your cloud infrastructure skills, Scalcraft bridges the gap between theoretical concepts and practical execution.

Master system design interviews with interactive architecture diagrams, AI feedback, structured courses, and real-world practice problems. Start free today.

Practice real interview questions on an interactive canvas — draw your architecture and get instant AI feedback. Every problem is a system design interview question used by top tech companies. Draw your solution on an interactive canvas and receive instant AI feedback. Build a real-time messaging backbone that scales to 1 billion users. Learn about XMPP protocols, Cassandra data modeling, and message delivery guarantees. Protect APIs from traffic spikes using distributed token bucket algorithms. Understand Redis-based rate limiting and sliding window counters. Master fan-out on write vs fan-out on read tradeoffs. Build the timeline algorithm that powers social media platforms like Twitter…from scalcraft.com

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