Portfolio ↗

Quiz

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

4 questions in Device Telemetry at Scale.

  1. Device Telemetry at Scale advanced

    A fleet platform emits 25 metric series per device, tagged with device id, for 400,000 devices. The observability bill is now larger than the compute bill for the platform itself. The team proposes dropping the device id tag and keeping per-model and per-region aggregates. What does that buy, what does it give up, and when does the bill arrive?

    3 min answer cardinalitytelemetrycostdiagnosis
  2. Device Telemetry at Scale advanced

    A logistics platform receives location updates from a large fleet every few seconds. Where should volume be reduced, and what is the ordering of leverage?

    2 min answer delhiveryportertelemetryfiltering
  3. Device Telemetry at Scale advanced

    A ride-hailing platform receives location updates from hundreds of thousands of active drivers every few seconds. Design the ingest and serving path.

    2 min answer ubergeospatialingestionreal-time
  4. Device Telemetry at Scale advanced

    Design telemetry collection where the volume of monitoring data would cost more than the systems being monitored.

    2 min answer telemetrycardinalitysamplingcost