Interview prep
Structured notes for system design interviews — clear concepts, worked examples, and fast revision before your round.
Patterns, complexity, and company-wise interview practice.
Classes & APIsElevator, parking lot, LRU cache, and classic OOP designs.
Building blocksQueues, caching, CAP, sharding, sagas, and news feed.
Full designsInterview framework, full designs, videos, and a 28-chapter study path.
Deep divesOffline mirror — patterns, technologies, and problem breakdowns.
ExternalCurated sheets, roadmaps, company prep, and mock tests.
Your revision