Study map: interview framework → core concepts → full design questions.
The companion path below the design-question list is organized as a deliberate interview sequence:
- 01-03
FoundationsScaling, back-of-the-envelope estimation, and the interview framework.
- 04-08
Core patternsRate limiting, consistent hashing, key-value stores, IDs, and URL shorteners.
- 09-18
Product systemsCrawlers, notifications, feeds, chat, search, media, storage, and maps.
- 19-28
Deep divesQueues, observability, reservations, email, object storage, payments, wallets, and exchanges.
Watch one production-scale benchmark, then use the transcript-derived notes to connect the demonstration to interview trade-offs.
Cododev on YouTubeLet's Handle 1 Million Requests per SecondCPU, network, databases, Redis, C++, clustering, and cost.
Open video notes →