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Quiz

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 Service Mesh.

  1. Service Mesh advanced

    A platform is evaluating a service mesh. What should be checked before adopting, and what is the honest justification?

    2 min answer service-meshcomplexityobservabilitymtls
  2. Service Mesh advanced

    A platform runs 2000 pods across 300 services and is about to put a sidecar proxy in every pod. Roughly what does the fleet cost in memory and control-plane work before a single request is served, and which number grows fastest as the platform doubles?

    3 min answer service meshsidecarcapacitycontrol plane
  3. Service Mesh advanced

    A proposal for an internal tool serving 50 requests per second specifies a service mesh, distributed tracing, three databases, a message broker, distributed locks and multi-cluster deployment. What do you cut and what do you keep?

    3 min answer over-engineeringsimplicitymeshcritique
  4. Service Mesh advanced Multiple choice

    After a mesh rollout, one service's p99 rises from 30 ms to 70 ms, but only for calls to services in other namespaces. Same-namespace calls are unchanged. CPU on both sides is flat and the proxy reports no errors. What is the most likely cause?

    3 min answer service meshlatencylocalitycross-zone
  5. Service Mesh advanced

    WeChat's backend sheds overload with DAGOR, published at SoCC 2018: each service detects overload from the average queuing time of requests in its own pending queue - thresholded at 20 ms against a 500 ms task timeout - and rejects by admission level rather than by rate. A platform team running a service mesh asks why they cannot get this from the mesh's load-shedding settings. What did WeChat choose, why did it fit, and what does it cost?

    3 min answer tencentwechatdagorload-shedding