Effective Node.js Monitoring: Metrics, Alerts, and Best Practices

This guide dives deep into effective Node.js application monitoring. It covers monitoring runtime metrics (memory, CPU), application metrics (request rates, response times), and business metrics (user actions, conversion rates). The importance of monitoring is stressed, detailing how to collect these metrics and set up meaningful alerts. Common monitoring pitfalls like misinterpreting memory sawtooth patterns and ignoring percentiles are addressed. The guide also shows how to connect metrics to business value and utilize them beyond production, such as in benchmarking, load testing, and A/B testing.