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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

3 questions in OpenTelemetry.

  1. OpenTelemetry advanced

    A fleet exports OTLP to a gateway collector deployment with memory_limiter first in the pipeline, then a batch processor, then an exporter with a sending queue. The telemetry backend starts answering in 8 seconds instead of 80 ms, and request volume doubles at the same time. What happens second by second, and what stops it?

    2 min answer opentelemetrycollectorbackpressureload-shedding
  2. OpenTelemetry advanced

    A platform team runs a vendor-specific agent across 2,000 services feeding a metrics store holding billions of active series — the scale eBay described for Sherlock.io when it published its move to OpenTelemetry in 2022. They want to migrate to OpenTelemetry without a telemetry gap and without asking 400 application teams to coordinate. Give the sequence, and say where the data can silently diverge.

    4 min answer ebayopentelemetrymigrationdual emit
  3. OpenTelemetry advanced

    A platform team standardises every service on OTLP push to a collector and switches off Prometheus scraping. Metrics still arrive and dashboards still work. What has the team given up, and when does that bill arrive?

    3 min answer opentelemetryprometheuspushscrape