Quiz

2667 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 areas2667 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture86 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88

Difficulty Any beginner intermediate advanced

4 questions in Debugging Distributed Systems.

Quiz

A collaborative editing platform receives a report that one document occasionally shows different content to different users, but it cannot be reproduced. How do you investigate a rare, non-deterministic, distributed bug?

A deployment completes successfully. Twenty minutes later latency has tripled, but only on new instances. Diagnose.

A platform of 40 services has logs only, and incidents take hours to diagnose. Design the observability strategy and its rollout order.

A streaming consumer's lag is growing steadily while workers show low CPU and no errors. What are the candidate causes and how do you distinguish them?