Origin Pull on SRE Engineering Practicehttps://www.sre.wang/en/tags/origin-pull/Recent content in Origin Pull on SRE Engineering PracticeSRE Engineering Practicehttps://www.sre.wang/share-card-square.jpghttps://www.sre.wang/share-card-square.jpgHugo -- gohugo.ioenThu, 24 Sep 2026 00:33:21 +0800Cache Hit Rate from 58% to 94%: Building a CDN Monitoring System and 5 Production-Grade Troubleshooting Decisionshttps://www.sre.wang/en/posts/monitoring-cdn-edge-monitoring/Thu, 24 Sep 2026 00:33:21 +0800https://www.sre.wang/en/posts/monitoring-cdn-edge-monitoring/CDN monitoring is not just about checking a hit rate number. This article breaks down a production-grade CDN monitoring system across three dimensions: cache hit rate, origin bandwidth, and edge node health, covering Prometheus collection, Grafana dashboard design, alert rules, and 5 real troubleshooting cases.