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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

2 questions in Telemetry Cost.

  1. Telemetry Cost intermediate Multiple choice

    A design platform of the kind Canva runs exports 40 metrics per service. An engineer adds a `pod_name` label so a noisy pod can be identified. The service runs 600 pods and deploys twice a day, so pod names turn over completely every 12 hours. Retention is 30 days. Roughly how many distinct series does that one label create over the retention window?

    2 min answer canvacardinalitytelemetry costmetrics
  2. Telemetry Cost intermediate

    A platform's log volume has grown until log storage is one of its largest infrastructure costs. What should change, and what should not?

    2 min answer elasticlogscostindexing