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Quiz

2667 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 areas2667 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture86 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88
Difficulty Any beginner intermediate advanced

90 questions in Performance & Capacity.

  1. Network Performance Tuning advanced

    An internal API call takes 40 ms consistently while the server reports 2 ms of processing. Where is the time going?

    2 min answer networknaglelatencytuning
  2. Network Performance Tuning intermediate

    What happens when a load balancer closes idle connections after 60 seconds while the client's connection pool keeps them for 5 minutes?

    3 min answer keep-aliveidle-timeoutconnection-resetnat
  3. Peak Event Readiness advanced

    A live platform has two weeks before a major event expected to bring ten times normal traffic. What should the readiness work consist of, in priority order?

    2 min answer peak-readinesscapacitydegradationrehearsal
  4. Peak Event Readiness advanced

    A retailer expects 20× normal traffic for a two-hour sale launch. Plan the readiness.

    2 min answer peakcapacitydegradationwar-room
  5. Peak Event Readiness advanced

    A streaming platform is broadcasting a scheduled cricket match and forecasts 40 million concurrent viewers, but the real number could be double. How should pre-scaled capacity, CDN pre-positioning, ingest redundancy, bitrate ladders, connection limits and feature degradation be planned together?

    3 min answer hotstarjiocinemalive-streamingconcurrency
  6. Peak Event Readiness advanced

    A trading platform faces its largest load at a precisely known time every day. What does readiness for a scheduled peak involve beyond capacity?

    2 min answer zerodhapeakreadinesswarmup
  7. Peak Event Readiness advanced

    Retail leadership proposes a six-week change freeze covering the entire estate from mid-November. Respond.

    2 min answer retailfreezeriskgovernance
  8. Peak Event Readiness advanced

    You expect 10x traffic on a known date six weeks away. Walk through the preparation.

    3 min answer peakcapacitychange-freezeload-shedding
  9. Performance Budgets intermediate

    A design platform's web application has grown steadily slower with no single change responsible. What mechanism prevents this, and how should it be enforced?

    2 min answer performance-budgetsciregressionfrontend
  10. Performance Budgets intermediate

    A web experience for low-end devices on slow networks keeps regressing despite good intentions. What mechanism prevents this, and what must it measure?

    2 min answer physics-wallahperformance-budgetmobileregression
  11. Performance Budgets intermediate

    What does a latency budget give you that a latency target does not?

    2 min answer latency-budgetallocationregressionci
  12. Performance Budgets intermediate

    What is a performance budget, why do most attempts at one fail, and how should it be enforced so it actually constrains behaviour?

    2 min answer performance-budgetsregressionciratchet