Node.js applications require monitoring to identify bottlenecks and optimize resource utilization. Key concepts include application metrics, which track CPU usage, memory, disk space, request latency, and error rates. Node.js monitoring tools like New Relic, Datadog, and Prometheus can collect and analyze these metrics, helping developers ensure high availability and user experience.
Modern apps demand monitoring and observability to understand behavior across complex distributed systems. This article clarifies the difference and shows how Prometheus (metrics, PromQL, alerting) and Grafana (dashboards) combine to collect, store, query, and visualize data, enabling early issue detection, smarter resource allocation, and higher reliability, illustrated with an e-commerce microservices workflow.
Monitoring and logging tools are crucial for a application's success, helping identify performance bottlenecks, detect errors quickly, and analyze user behavior to improve the overall user experience. This article covers two popular toolsets: Prometheus, an open-source monitoring system, and ELK Stack (Elasticsearch, Logstash, Kibana), a logging solution that helps collect, process, and analyze log data.
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