How to Monitor Your Hono Application with Vigilmon

Hono is a blazing-fast, lightweight web framework built on Web Standards — runs on Cloudflare Workers, Deno, Bun, Node.js, and more. With Hono powering edge and serverless APIs across multiple runtimes, uptime monitoring becomes critical. This guide shows how to monitor Hono applications with Vigilmon.

Why Monitor Your Hono App?

Hono apps are often deployed at the edge (Cloudflare Workers, Deno Deploy, Fly.io), where cold starts and regional outages can silently fail your endpoints. Vigilmon catches:

• Endpoint downtime (5xx errors, timeouts)
• Slow response times degrading UX
• SSL certificate expiry
• Unexpected status code changes

Step 1: Create a Health Check Endpoint

Add a /health route to your Hono app:

import { Hono } from 'hono'

const app = new Hono()

// Health check endpoint for monitoring
app.get('/health', (c) => {
  return c.json({
    status: 'ok',
    service: 'my-hono-api',
    timestamp: new Date().toISOString(),
    version: '1.0.0'
  })
})

app.get('/', (c) => c.text('Hello from Hono!'))

export default app

For Cloudflare Workers deployment, your wrangler.toml would include:

name = "my-hono-app"
main = "src/index.ts"
compatibility_date = "2024-01-01"

Step 2: Add Database/External Dependency Checks

If your Hono app connects to a database or external service, include that in your health check:

app.get('/health', async (c) => {
  const checks: Record<string, string> = {}
  let overallStatus = 'ok'

  // Check D1 database (Cloudflare)
  try {
    const db = c.env.DB
    await db.prepare('SELECT 1').run()
    checks.database = 'ok'
  } catch (err) {
    checks.database = 'error'
    overallStatus = 'degraded'
  }

  return c.json({
    status: overallStatus,
    checks,
    timestamp: new Date().toISOString()
  }, overallStatus === 'ok' ? 200 : 503)
})

Step 3: Set Up Vigilmon Monitoring

1. Go to vigilmon.online and sign up for a free account
2. Click New Monitor → HTTP(S)
3. Configure your monitor:
   • URL: https://your-hono-app.workers.dev/health
   • Interval: Every 1 minute
   • Expected status: 200
   • Timeout: 10 seconds

Step 4: Configure Alerting

Vigilmon supports multiple alert channels:

• Email – instant downtime notifications
• Slack – team-wide alerts
• Webhooks – integrate with PagerDuty, OpsGenie, or custom handlers

For a Hono app running on Cloudflare Workers, set alert thresholds to fire after 2 consecutive failures (to avoid false positives from transient edge network blips).

Step 5: Multi-Region Monitoring

Hono apps often serve global traffic. Vigilmon checks from multiple regions (US, EU, Asia-Pacific) so you can detect region-specific outages:

US-East:    ✅ 45ms
US-West:    ✅ 52ms
Europe:     ✅ 38ms
Asia:       ❌ TIMEOUT

This immediately tells you it's an Asia-Pacific edge node issue, not a global outage.

Step 6: SSL Certificate Monitoring

Vigilmon automatically monitors SSL certificates for your Hono app's domain. You'll receive alerts 30, 14, and 7 days before expiry — critical for apps where certificates aren't auto-renewed.

Monitoring a Bun/Node.js Deployed Hono App

If you're running Hono on Bun or Node.js (not edge-deployed), use the same health endpoint but include process metrics:

app.get('/health', (c) => {
  const memUsage = process.memoryUsage()
  return c.json({
    status: 'ok',
    uptime: process.uptime(),
    memory: {
      heapUsed: Math.round(memUsage.heapUsed / 1024 / 1024) + 'MB',
      heapTotal: Math.round(memUsage.heapTotal / 1024 / 1024) + 'MB'
    },
    timestamp: new Date().toISOString()
  })
})

Summary

Hono's edge-first design means your app can handle millions of requests — but you still need visibility when something goes wrong. Get started with Vigilmon for free and monitor your Hono app in under 5 minutes.

Related: How to Monitor Cloudflare Workers with Vigilmon | How to Monitor Your Deno Application with Vigilmon