Observability — Things Worth SharingBài viết gắn tag Observability.https://cloudsecop.net/Observability cho Worker: Logs, Tail Workers, Analyticshttps://cloudsecop.net/blog/logs-analytics-tail-workers/https://cloudsecop.net/blog/logs-analytics-tail-workers/4 tầng observability Cloudflare: Workers Logs (retention 3 ngày), Tail Workers (realtime), Logpush (batch tới R2/SIEM), Analytics Engine. Structured logging, alert, debug prod.Tue, 09 Dec 2025 00:00:00 GMTCloudflareCloudflare DeveloperObservabilityLogsAnalytics EngineKhaVaneBPF metrics cho production — Cloudflare's ebpf_exporter patternhttps://cloudsecop.net/blog/ebpf-exporter-cloudflare-pattern/https://cloudsecop.net/blog/ebpf-exporter-cloudflare-pattern/ebpf_exporter expose kernel metrics qua Prometheus, không cần sidecar. So sánh CloudWatch agent và Datadog kernel module. Pattern Cloudflare dùng cho hàng ngàn host.Fri, 15 Aug 2025 00:00:00 GMTCloudflareObservabilityLinuxPrometheusPerformanceKhaVanDEX: Digital Experience Monitoring và proactive SLOhttps://cloudsecop.net/blog/dex-digital-experience-monitoring/https://cloudsecop.net/blog/dex-digital-experience-monitoring/DEX đào sâu cho Cloudflare One: khi control plane UP mà người dùng thấy chậm, chẩn đoán từng chặng (DNS/TCP/TLS/TTFB), SLO framework, 5 chế độ hỏng DEX không thấy.Fri, 30 May 2025 00:00:00 GMTCloudflareCloudflare OneDEXObservabilityZero TrustKhaVanLogs pipeline: Logpush, R2, SIEM và cross-layer correlationhttps://cloudsecop.net/blog/logs-pipeline-logpush-siem/https://cloudsecop.net/blog/logs-pipeline-logpush-siem/Logs deep-dive cho Cloudflare One: các dataset, Logpush (R2/S3/Splunk/Sentinel), tương quan đa tầng, retention hot/warm/cold, kiểm soát chi phí, rule phát hiện SIEM mẫu.Fri, 23 May 2025 00:00:00 GMTCloudflareCloudflare OneLogsSIEMObservabilityKhaVan