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Quiz

2988 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 areas2988 Architecture Fundamentals91 Distributed Systems111 Data Architecture100 Cloud Architecture97 Networking96 API & Integration Architecture97 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

3 questions in Latency.

  1. Latency advanced

    A collaborative editor must feel instantaneous to users on different continents, where physics imposes a floor of roughly 150 ms round trip. How is the latency requirement met at all?

    2 min answer latencylocal-firstoptimistic-uiperception
  2. Latency advanced

    A load generator reports a p99 of 30 ms at 5,000 rps. In production at the same rate, users report multi-second stalls, and the service's own latency metrics agree with the load test. Both measurements are honest. What is being missed?

    3 min answer coordinated omissionload testingpercentilesqueueing
  3. Latency advanced

    A page makes 20 parallel backend calls, each with a p99 of 1 second and a p50 of 40 ms. What is the page's latency profile?

    2 min answer latencytailfanoutpercentiles