21 Advanced System Design Blueprints

Production-grade system design patterns in one reference manual — 21 blueprints across five categories, each with an architecture diagram and a real-world failure mode.

Covers core infrastructure (URL shortener, rate limiter, API gateway, cache, object storage), social and content systems (feeds, media ingestion, ranking, transcoding, live streaming), real-time coordination (messaging, geo dispatch, notifications, crawlers, autocomplete), commerce and analytics (payments, e-commerce mesh, ticket booking, streaming analytics, job scheduling), and advanced topologies (collaborative editing with OT/CRDT).

Built for developers, solution architects, and interview prep — practical patterns you can trace from diagram to failure scenario. PDF · free download from NKCode.dev.