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System Design Interview Prep

Intermediate to Advanced

Move from fundamentals to real design use cases: requirements, APIs, storage, async workflows, distributed trade-offs, and operations.

Intermediate to Advanced· 5 Topics· 470 Resources· Updated Jul 2, 2026

Beginner Foundations

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Start with sizing, requirements, CAP, reliability, and the interview answer structure.

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Understand API contracts, protocols, DNS, CDNs, load balancers, gateways, reverse proxies, webhooks, and fan-out.

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Choose SQL/NoSQL, model data, shard safely, and plan schema evolution.

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Apply queues, event sourcing, CQRS, CDC, circuit breakers, bulkheads, and dead-letter queues.

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Practice multi-region, microservices, observability, and production-grade system case studies.

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