Redis is a critical component in many production stacks, yet its monitoring is often an afterthought. This guide demonstrates how to use redis_exporter to expose Redis metrics and feed them into Prometheus for visualization and alerting. Key steps include configuring the exporter, setting up Prometheus scrape jobs, and defining alert rules for common failure scenarios like memory exhaustion or connection drops. The approach is vendor-neutral and works with any Prometheus-compatible stack. For teams already running Prometheus, adding Redis monitoring is straightforward and yields immediate visibility into cache hit rates, latency, and memory usage. The article also touches on best practices for alert thresholds and avoiding alert fatigue. While not groundbreaking, it serves as a solid reference for DevOps engineers looking to close monitoring gaps.
A practical guide to monitoring Redis with redis_exporter and Prometheus, covering metric collection and alerting setup.