Monitoring Rails apps using Open Source
summary
Shows an end-to-end open source Rails monitoring stack: OpenMetrics for instrumentation, Prometheus scrape pulling a /metrics endpoint, PromQL + Grafana dashboards, and Alertmanager for notifications. Delivers a tiny openapm-ruby gem that auto-instruments Rack and emits three metrics (request rate, error rate, duration) with ID masking to avoid cardinality. Claims near-zero overhead, keeps data inside the VPC for compliance, lets you compute P95/P99 latencies and alert on them, and promises lower cost versus commercial APMs while addressing the 41‑bits/sec human signal limit.
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chapters (10)
- 0:00Introduction and setup
- 2:33Cloud native Rails apps
- 5:02Proprietary APM drawbacks
- 9:58Open source APM benefits
- 12:48Instrumentation with OpenMetrics
- 17:29Metric data types explained
- 19:13OpenAPM Ruby gem demo
- 22:00Zero overhead and compliance
- 24:27Monitoring as a foundation
- 25:50Q&A on maintainability
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