fundamentals39 cards
Fundamentals
The building blocks every design answer is assembled from: load balancing, caching, replication, sharding, consistency, queues, rate limiting and the tradeoffs between them.
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Decks
Due counts update as you study. A mixed session pulls due cards from every deck first, then new ones up to your daily limit.
estimation10 cards
Estimation
Back-of-the-envelope math: QPS from users, storage from writes, bandwidth from reads, and the latency numbers that make or break an architecture.
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designs15 cards
Classic designs
Full design prompts drilled stage by stage: requirements, estimates, API, data model, high-level design, deep dives and bottlenecks.
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