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2707 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 areas2707 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 Architecture96 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 Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

5 questions in Streaming SLOs.

  1. Streaming SLOs intermediate

    Consumer lag has grown from 30 seconds to 4 minutes over a week. Throughput and error rates are normal. What is happening and how urgent is it?

    2 min answer streamingoperationscapacity
  2. Streaming SLOs advanced

    Tencent's DAGOR (SoCC 2018) detects overload in WeChat's microservice fleet from the average queuing time in a server's pending queue rather than from CPU, treats 20 ms as the overload threshold, and piggybacks the server's current admission level onto its responses so callers shed doomed work themselves. A streaming ingest tier has the same shape. What transfers, and where would copying it be a mistake?

    3 min answer tencentwechatload-sheddingadmission-control
  3. Streaming SLOs advanced

    What SLOs should a market-data streaming pipeline have, and what does each protect?

    2 min answer coindcxstreaming-slolagfreshness
  4. Streaming SLOs intermediate

    What SLOs should a streaming pipeline publish, and why is availability the wrong headline metric?

    2 min answer streaming-sloslagcompletenessfreshness
  5. Streaming SLOs intermediate

    You are handing a streaming pipeline to an operations team who have never run one. What must exist before they accept it?

    2 min answer streamingoperationshandoverrunbooks