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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

5 questions in Cell-Based Architecture.

  1. Cell-Based Architecture advanced

    A SaaS platform has had three full outages this year, each affecting all customers. Propose an architectural response.

    2 min answer blast-radiuscellsavailability
  2. Cell-Based Architecture advanced

    A platform serving hundreds of millions of users adopts cell-based architecture. What does it buy that redundancy does not, and what does it cost?

    2 min answer cellsblast-radiusisolationcorrelated-failure
  3. Cell-Based Architecture advanced

    A platform with extreme peaks keeps having total outages caused by bad deployments and poisonous requests. Which pattern addresses this, and what does it cost?

    2 min answer dream11cellsblast-radiusisolation
  4. Cell-Based Architecture advanced

    Alibaba reported a peak of 583000 order creations per second during Singles' Day in 2020. A system that idles at a small fraction of that for 364 days cannot be validated by ordinary load testing. What does an organisation have to build to make that peak survivable, and where would copying it be a mistake?

    3 min answer alibabaflash salecapacityisolation
  5. Cell-Based Architecture advanced

    Your multi-tenant API assigns each customer to one of eight worker pools by hash. One customer's traffic pattern regularly degrades their pool. Improve it.

    2 min answer awsshuffle-shardingisolationmulti-tenancy