Portfolio ↗

Quiz

2948 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

All areas2948 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking96 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture105 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization102 AI-Era Architecture106 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience102 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

4 questions in Degradation Modes.

  1. Degradation Modes advanced

    A crypto aggregator's upstream exchange feeds become unreliable during extreme market volatility - the moment users most need them. How should stale data, provider failover, breakers, caching and user-facing warnings interact?

    2 min answer coinswitchmarket-datastalenessfailover
  2. Degradation Modes advanced

    An e-commerce platform designs explicit degradation modes for extreme demand events. What must be true of the mode ladder for it to work on the day?

    2 min answer degradationload-sheddingflash-salerehearsal
  3. Degradation Modes advanced

    Define three degradation modes for a real-time marketplace. What triggers each, what stops working, and how does the system return to normal?

    2 min answer degradation-modesuberprioritisationload-shedding
  4. Degradation Modes intermediate

    Ticketmaster stated that the November 2022 Eras Tour onsale drove 3.5 billion total system requests, about 4x its previous peak, attributing much of it to bot traffic and users without invite codes. At 4x peak with inventory far below demand, you can queue, fail fast, or degrade. What does each buy, and what does it cost?

    3 min answer ticketmasterload sheddingqueueingflash sale