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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

5 questions in Clean Architecture.

  1. Clean Architecture intermediate Multiple choice

    A service calls a payment provider over HTTP. The provider occasionally returns 503 and occasionally times out. In a domain / application / adapter layering, which layer should own the retry and backoff policy?

    3 min answer clean architecturehexagonalretrieslayering
  2. Clean Architecture intermediate

    A team adopts a layered architecture with strict dependency rules and finds every small change touches many files. Is the architecture wrong, or the application of it?

    2 min answer clean-architecturelayersindirectionpragmatism
  3. Clean Architecture advanced

    A use case renders a basket of up to 200 lines. It calls a repository port's findById once per line. In the domain layer this looks like a clean loop with no infrastructure knowledge, and p99 has climbed to 2.4 s. The dependency rule forbids the domain from knowing about SQL. What do you change?

    3 min answer clean-architectureports-and-adaptersn-plus-onequery-shape
  4. Clean Architecture intermediate

    Review this design. Every repository method opens its own transaction and commits before returning. One use case calls four repositories and then publishes an event. Support reports occasional orders with a payment row and no shipment row. What would you change and what would you leave alone?

    3 min answer clean architectureunit of worktransactionsoutbox
  5. Clean Architecture advanced

    When is clean architecture over-engineering, and what is the signal that you have its costs without its benefits?

    2 min answer clean-architectureanaemic-domainover-engineeringcost