HTTP Health and Readiness Handlers (server/health.go)

Provides liveness and database-aware readiness HTTP probes for service monitoring. Use it in Go microservices to manage traffic routing during outages.

// Source: https://github.com/Mic92/niks3 | License: MIT | Copyright 2025 Jörg Thalheim
// Provided via justclaw.it.com; keep this notice with the code.
package server

import (
	"context"
	"log/slog"
	"net/http"
	"time"
)

const readinessTimeout = 2 * time.Second

// HealthCheckHandler is the liveness probe and deliberately has no
// dependencies, so a Postgres outage does not restart every replica.
func (s *Service) HealthCheckHandler(w http.ResponseWriter, _ *http.Request) {
	w.WriteHeader(http.StatusOK)

	_, err := w.Write([]byte("OK"))
	if err != nil {
		slog.Warn("Could not write health check response", "error", err)
	}
}

// ReadinessHandler fails while Postgres is unreachable so load balancers stop
// routing to this instance.
func (s *Service) ReadinessHandler(w http.ResponseWrite

... (truncated -- full source via MCP)