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2908 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 areas2908 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture95 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 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

5 questions in Failure Thinking.

  1. Failure Thinking advanced

    Between August and early September 2025 three separate infrastructure bugs degraded Claude's output quality - one affected 16% of Sonnet 4 requests in the worst hour of 31 August - while error rates and latency stayed normal. What class of failure is this, and what would you have had to build beforehand to notice it?

    2 min answer anthropicsilent-failuredetectionquality-regression
  2. Failure Thinking advanced

    Roblox's published account of its October 2021 outage - 73 hours from 28 to 31 October - says the difficulty of diagnosing two primarily unrelated problems buried deep in its Consul implementation was largely responsible for the length. Write-ups of that postmortem describe the remediation order: a node replaced on a degraded-hardware theory, then the whole cluster doubled from 64 to 128 cores with faster storage on a traffic theory, then a restore from an earlier healthy snapshot, then a return to 64-core hosts. What did that sequence assume, and what should change once the second remediation fails?

    3 min answer robloxconsulincidenthypothesis
  3. Failure Thinking advanced

    What does it mean to design by thinking about failure first, and what does that produce that requirement-driven design does not?

    2 min answer credfailure-modesdesignpremortem
  4. Failure Thinking advanced

    What does it mean to think in failure modes as a habit rather than as a checklist item, and which questions consistently produce findings?

    3 min answer failure-modesdesign-reviewresiliencequestions
  5. Failure Thinking advanced

    What questions characterise failure thinking, and which are most often skipped in design reviews?

    2 min answer failure-thinkingreviewdependenciesdegradation