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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

4 questions in Edge Functions.

  1. Edge Functions advanced

    A checkout read API is deployed as an edge function to 300 points of presence. Global traffic is 60 requests per second and follows population: the busiest location takes about 8% of it and the 150th-busiest takes about 0.1%. The runtime evicts an idle isolate after roughly 30 seconds. Roughly what share of requests at that 150th location pays an initialisation path and what does the number rule in or out?

    4 min answer edge-functionscold-startpoissoncapacity-modelling
  2. Edge Functions advanced

    Shortly before 10:00 UTC on 8 June 2021 a Fastly customer pushed a valid configuration change and about 85% of the network began returning errors. The bug had shipped on 12 May and lay dormant. Detection took about a minute and 95% of the network was recovered within 49 minutes. What class of failure is this?

    2 min answer fastlyconfigurationlatent-bugblast-radius
  3. Edge Functions advanced

    What genuinely belongs in an edge function, and what is the failure mode of putting too much there?

    1 min answer edge-functionsruntime-limitsstatedebugging
  4. Edge Functions advanced

    Which parts of a personalised page would you compute at the edge, and where does each piece of state live?

    2 min answer edgestatecachingpersonalisation