Uptime Monitoring

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Set up comprehensive uptime monitoring with health checks, status pages, and incident tracking to ensure visibility into service availability.

When to Use

• Service availability tracking
• Health check implementation
• Status page creation
• Incident management
• SLA monitoring

Quick Start

Minimal working example:

// Node.js health check
const express = require("express");
const app = express();

app.get("/health", (req, res) => {
  res.json({
    status: "ok",
    timestamp: new Date().toISOString(),
    uptime: process.uptime(),
  });
});

app.get("/health/deep", async (req, res) => {
  const health = {
    status: "ok",
    checks: {
      database: "unknown",
      cache: "unknown",
      externalApi: "unknown",
    },
  };

  try {
    const dbResult = await db.query("SELECT 1");
    health.checks.database = dbResult ? "ok" : "error";
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
Health Check Endpoints	Health Check Endpoints
Python Health Checks	Python Health Checks
Uptime Monitor with Heartbeat	Uptime Monitor with Heartbeat
Public Status Page API	Public Status Page API
Kubernetes Health Probes	Kubernetes Health Probes

Best Practices

✅ DO

• Implement comprehensive health checks
• Check all critical dependencies
• Use appropriate timeout values
• Track response times
• Store check history
• Monitor uptime trends
• Alert on status changes
• Use standard HTTP status codes

❌ DON'T

• Check only application process
• Ignore external dependencies
• Set timeouts too low
• Alert on every failure
• Use health checks for load balancing
• Expose sensitive information