kubernetes

package health

import (
  "context"
  "net"
  "net/http"

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web-app
  namespace: production
  labels:

# ConfigMap from literal values
apiVersion: v1
kind: ConfigMap
metadata:
  name: web-app-config
  namespace: production

apiVersion: apps/v1
kind: Deployment
metadata:
  name: user-service
  labels:
    app: user-service

import express, { type Express, type Request, type Response } from 'express';

export function buildApp(isShuttingDown: () => boolean): Express {
  const app = express();
  app.disable('x-powered-by');

package com.example.health;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;

# HPA v2 with multiple metrics
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: web-app-hpa
  namespace: production

# === Vault Agent Injector: Auto-inject secrets into pods ===
apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-server
  namespace: production

# === ArgoCD Application: Single app deployment ===
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: myapp-production
  namespace: argocd

module HealthCheckable
  extend ActiveSupport::Concern

  CheckResult = Struct.new(:name, :ok, :message, keyword_init: true)

  private

package com.example.health;

import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.stereotype.Component;

const withTimeout = (promise, timeoutMs, name) => {
  let timer;
  const timeout = new Promise((_, reject) => {
    timer = setTimeout(
      () => reject(new Error(`check '${name}' timed out after ${timeoutMs}ms`)),
      timeoutMs