Uptime Monitoring

This handles the essential infrastructure for knowing when your services go down. You get health check endpoints that probe your database, cache, and external dependencies, plus implementations for Node.js, Python, and Kubernetes liveness probes. The reference guides cover everything from basic HTTP endpoints that return uptime stats to full status page APIs with incident tracking. Most useful when you're moving beyond "is the process running" to actually verifying that all the pieces your app depends on are working. The deep health checks are what you want for catching partial outages before users complain about them.