How to Build a Status Monitoring Service in Go

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Build a Go-based monitoring app that probes services, opens/closes incidents, sends Teams/Slack alerts, and exports Prometheus metrics in Docker.
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This tutorial walks through building StatusD, a self-hosted monitoring service in Go that reads monitored endpoints from JSON, probes them on schedules via a worker pool, records events and incidents in Postgres, sends Teams/Slack alerts, and exposes Prometheus metrics for Grafana dashboards—fully runnable with Docker Compose.