Node.js Structured Logging in Production: Pino, Correlation IDs, and Log Aggregation
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console.log works until it doesn't. In production, you need to answer questions like: "Why did this request fail for user 4821 at 3:14am?" — and console.log('error:', err) gives you nothing to search, filter, or correlate. This guide covers structured logging with Pino — the fastest Node.js logger — including request correlation, child loggers, log level management, and shipping logs to your aggregation stack. Why Pino Node.js logging libraries range from the veteran (winston) to th