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System design framework + practice

System Design Interview Preparation

Choose a design focus and launch it into the live interview flow, where follow-ups can challenge your assumptions and trade-offs.

Practice options

Prepare for system design interviews using a repeatable requirements, API, data model, architecture, scale, reliability, and trade-off framework.

Full interview framework

Requirements → estimates → APIs → data → architecture → bottlenecks → trade-offs.

Scalability & reliability

Capacity, partitioning, replication, caching, queues, failure modes, and recovery.

Data & consistency

Schema, indexes, transactions, consistency models, storage choices, and hotspots.

Related resources

Product documentation · Main website