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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

6 questions in Modular Monolith.

  1. Modular Monolith intermediate

    A checkout path makes 40 calls across module boundaries to render one page. Roughly what does that path cost in a modular monolith versus the same modules extracted as services in one availability zone, and what does the number tell you about where to draw boundaries?

    3 min answer modular-monolithmicroserviceslatency-budgetcall-amplification
  2. Modular Monolith intermediate

    A product team of fifteen engineers must choose between a modular monolith and services. What should decide it?

    2 min answer loommodular-monolithboundariesteam-size
  3. Modular Monolith advanced

    A productivity app keeps a full local database on each client and syncs deltas with the server. Why would a small team choose this over conventional REST, and how are optimistic updates, conflicts, permission changes and client schema migrations handled?

    3 min answer linearsync-engineoffline-firstoptimistic-updates
  4. Modular Monolith intermediate

    A team adopts a modular monolith. What must they do forever, and what happens if they stop?

    2 min answer modular-monolithenforcementciboundaries
  5. Modular Monolith intermediate

    A team chooses a modular monolith over microservices. What makes the module boundaries actually hold, and what signals indicate it is time to extract a service?

    3 min answer modular-monolithboundariesenforcementextraction
  6. Modular Monolith intermediate

    What mechanically enforces module boundaries in a monolith, and what happens without enforcement?

    2 min answer modular-monolithenforcementdependency-rulesownership