Answer
Use CPU profiles, flame graphs, and V8 inspector to detect heavy loops, JSON parsing, regex usage, or encryption overheads.
Quick Answer
CPU bottleneck analysis: use clinic.js flamegraph to visualize where V8 spends time, or run with --prof and process the v8 log with node --prof-process. Common culprits: heavy serialization (JSON.stringify on huge objects), regex on large strings, synchronous crypto, and bcrypt hashing (use async version). Move CPU work to worker threads.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ