Health Check Endpoints Implement health checks for monitoring service availability and readiness. Probe Types | Probe | Purpose | Failure Action | |-------|---------|----------------| | Liveness | Is process alive? | Restart container | | Readiness | Can handle traffic? | Remove from LB | | Startup | Has app started? | Delay other probes | | Deep | All deps healthy? | Trigger alerts | Implementation (Express) Kubernetes Configuration Best Practices - Keep liveness checks minimal (no external deps) - Check only critical systems in readiness - Return 200 for healthy, 503 for unhealthy - Set rea…