Health Check
System monitoring component that periodically checks HTTP endpoints and reports health status, response time, uptime, and per-endpoint history with configurable auto-refresh.
Pro features
What the Pro version adds to this component.
Endpoint Health Checks
Fetches each endpoint and marks it healthy or unhealthy based on the expected status codes
Auto-Refresh Polling
Re-checks all endpoints on a configurable interval, with manual refresh on demand
Response Time Metrics
Measures per-endpoint response time and shows the average across services
Uptime Tracking
Calculates a rolling uptime percentage per endpoint and overall
Status History
Keeps a mini history chart of the most recent checks per endpoint (maxHistory)
Critical Endpoints
The overall status is derived from the endpoints marked as critical
Status Change Callback
onStatusChange fires with the latest results so you can wire up your own alerting or logging
Request Timeouts
Each check aborts after a per-endpoint timeout to avoid hanging requests
Custom Requests
Configure HTTP method, headers, body, and expected status codes per endpoint
Installation
Install via CLI
npx @moontra/moonui-cli add health-checkUsage
System HealthWARNING
No endpoints configured
Examples
Basic Health Monitoring
Minimal configuration — two endpoints, manual refresh, history disabled
Real-time System Monitoring
Live dashboard that re-checks every endpoint on a 30s interval (autoRefresh) and keeps a rolling per-endpoint history. The CDN check uses a lightweight HEAD request.
Advanced Configuration with Callbacks
Per-endpoint request options in one place: a GET check with custom headers and expected status codes, and a POST check that sends a JSON body. The POST target here is a static asset that rejects the method (HTTP 405), so it reports unhealthy on purpose — because it is marked critical: false the overall status stays healthy, while onStatusChange reports 1 / 2 healthy.
Multi-Region Monitoring
Monitor services across multiple geographic regions with a region switcher — switching regions swaps the endpoint list and triggers a fresh check