Follow-up · depth 6
Design a small subsystem that relies on DFS Cycle Detection (Directed Graph)
Design a small subsystem that relies on DFS Cycle Detection (Directed Graph)
Answers use simple, clear English.
Audio N/AQuick interview answer
Sketch components, data flow, failure modes, and metrics around DFS Cycle Detection (Directed Graph). Example shape: Build pipeline: detect circular module imports before CI runs.
Detailed answer
Mini design using DFS Cycle Detection (Directed Graph): • Components: API edge, worker/queue, store, and observability. • Data flow: request → DFS Cycle Detection (Directed Graph)-related path → response/async side effects. • Failure modes: timeouts, overload, partial dependency loss. • Metrics: latency, errors, saturation for the DFS Cycle Detection (Directed Graph) path. Guardrails: Loop all nodes as DFS roots; explain gray = active recursion path. Parent context: Mitigate first, then root-cause. Check symptoms against: Using two-color visited only (misses cross edges in undirected); forgetting disconnected components..
Full explanation
Interviewers want a crisp architecture story anchored on DFS Cycle Detection (Directed Graph), not a buzzword list. Three-color DFS: white=unvisited, gray=in current stack, black=done. Back edge to gray node ⇒ cycle. Works for dependency graphs and course prerequisites.
Follow-up questions
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Parent context — DFS Cycle Detection (Directed Graph)
Mitigate first, then root-cause. Check symptoms against: Using two-color visited only (misses cross edges in undirected); forgetting disconnected components..
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