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Senior Engineering Interview Handbook / Reading section

Part 10 - The System Design Casebook

Apply the system design method to realistic senior-level case studies.

190entries 176chapters 1sections

This part is the rehearsal bench for system design. Each case should force concrete requirements, architecture choices, data decisions, failure modes, scaling trade-offs, and interviewer follow-ups.

By the end of this part, you should have practiced enough cases to adapt the method instead of memorizing template architectures.

  1. 89 Infrastructure Primitives A system-design casebook chapter that develops one rate limiter in depth, then transfers the same reasoning to unique-ID generation, caching, service discovery, … Read
  2. 90 Content and Storage Systems A sustained private-photo design that develops the authority, commit, delivery, deletion, and recovery decisions behind URL shorteners, file synchronization, … Read
  3. 91 Communication Systems A sustained group-chat design that develops delivery contracts, ordering, reconnect, presence, push and email delivery, notification preferences, abuse … Read
  4. 92 Feeds, Search, and Recommendations A sustained document-search design that develops retrieval stages, index freshness, permission-safe ranking, pagination, fallback, feedback, and adaptations for … Read
  5. 93 Commerce and Financial Integrity A sustained commerce-system design case that develops idempotency, inventory reservation, provider ambiguity, order state, double-entry posting, reconciliation, … Read
  6. 94 Real-Time and Location Systems A sustained real-time system-design case that develops freshness contracts, location validation, geospatial dispatch, expiring offers, current state, event … Read
  7. 95 Data and Workflow Platforms A sustained system-design case covering producer contracts, control and data planes, delivery semantics, backpressure, checkpoints, leases, versioned … Read
  8. 96 Collaboration and Multi-Tenant Platforms A sustained system-design case covering collaborative editing, permission changes, calendars, identity, pooled and dedicated tenancy, quotas, migration, and … Read
  9. 97 Media Systems A sustained system-design case covering live ingest, durable media sources, video transcoding and playback, podcast distribution, image processing, CDN … Read
  10. 98 AI-Native Systems A sustained system-design case covering LLM applications, permissioned retrieval, embeddings, model routing and inference, evaluation, safety, action … Read
  11. 99 Adapting Known Designs to New Prompts A system-design capstone that turns a familiar feed architecture into a notification digest, then derives a reusable method for adapting known designs without … Read