Setting Up Real-Time Monitoring for Phoenix Apps with PromEx and Grafana

The article emphasizes the significance of observability in understanding application performance, specifically how Prometheus metrics can be leveraged within Phoenix applications. It introduces the PromEx library, a tool that simplifies the incorporation of metrics into Elixir projects. PromEx enables developers to gather various application metrics and visualize them using Grafana. It details the integral components such as built-in plugins for monitoring different aspects of applications like HTTP requests and Ecto queries, as well as guidance on creating custom plugins. Furthermore, it explains how to effectively integrate structured logging with Grafana's Loki for better log management. The piece wraps up with recommendations for maintaining monitoring systems, all while encouraging creative uses of these tools for tailored observability in Elixir applications.