Answer
Logging helps track errors, performance, and user actions. Winston and Pino are common tools.
Quick Answer
Logs are your visibility into what's happening in production. When something goes wrong, logs tell you when, what, and why. Log request errors, unexpected exceptions, slow queries, and key business events. In production, use a structured logger (Winston, Pino) and ship logs to a centralized system (Datadog, CloudWatch, ELK) for searching and alerting.
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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