Monitoring In-memory datastores

Monitoring in-memory datastores like Dragonfly requires tracking memory consumption as well as other metrics such as CPU usage and client-side metrics. In this blog post, we discussed how to monitor Dragonfly using Prometheus and add Grafana for visualization. We covered setting up a simple environment with Docker and Docker Compose, exposing metrics in Prometheus format, and creating a dashboard in Grafana to display the metrics. The key focus areas of monitoring include memory usage, connected clients, expired keys, evicted keys, and server-side metrics like CPU usage.