How to Monitor Your Hono.js API with Vigilmon

Hono is a fast, lightweight web framework that runs on Cloudflare Workers, Bun, Node.js, Deno, and edge runtimes. Its edge-first design means your API can run in 100+ locations globally — but you still need external uptime monitoring to know when it goes down. This guide shows you how to monitor your Hono.js API with Vigilmon.

Why Monitor a Hono API?

Edge deployment gives you speed — but it also introduces failure modes you won't see in local development:

• Cloudflare Workers can be blocked in specific regions
• KV/D1/R2 bindings can fail even when the Worker itself is running
• Cold starts on Bun or Deno can spike response times
• Deployment errors can silently break specific routes
• DNS propagation issues can leave some users unable to reach your API

External uptime monitoring from multiple global regions catches all of these.

Step 1: Add a Health Check Route

Hono makes adding a health endpoint trivial:

import { Hono } from 'hono';

const app = new Hono();

// Health check route
app.get('/health', async (c) => {
  // Optional: check bindings
  // const kv = c.env.MY_KV;
  // await kv.get('health-check-sentinel');

  return c.json({
    status: 'ok',
    timestamp: new Date().toISOString(),
    runtime: process.env.RUNTIME ?? 'unknown',
  });
});

// Your regular routes
app.get('/api/users', async (c) => {
  // ...
});

export default app;

The /health route returns 200 OK with a JSON body under normal conditions.

Step 2: Check KV / D1 / R2 Bindings (Cloudflare Workers)

For Cloudflare Workers with bindings, extend the health check to verify they're working:

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

  // Check KV binding
  if (c.env.MY_KV) {
    try {
      await c.env.MY_KV.put('__health__', '1', { expirationTtl: 60 });
      checks.kv = true;
    } catch {
      checks.kv = false;
    }
  }

  // Check D1 binding
  if (c.env.DB) {
    try {
      await c.env.DB.prepare('SELECT 1').first();
      checks.d1 = true;
    } catch {
      checks.d1 = false;
    }
  }

  const allHealthy = Object.values(checks).every(Boolean);
  const status = allHealthy ? 200 : 503;

  return c.json({ status: allHealthy ? 'ok' : 'degraded', checks }, status);
});

Step 3: Add the Monitor in Vigilmon

1. Log in at vigilmon.online
2. Click Add Monitor
3. Set URL to https://your-hono-api.workers.dev/health (or your custom domain)
4. Set Monitor Type to HTTP/HTTPS
5. Set Check Interval to 60 seconds
6. Under Advanced Options:
   • Expected Status Code: 200
   • Response Body Must Contain: "status":"ok" (optional but useful)
7. Click Save

Vigilmon immediately starts checking your Hono API from probe nodes distributed across multiple continents.

Step 4: Configure Alert Channels

In Vigilmon, add your alert channel:

1. Go to Alert Channels → Add Channel
2. Choose: Email, Slack (webhook URL), PagerDuty, or Custom Webhook
3. Set the trigger: e.g., "alert after 2 consecutive failures from 2+ regions"

With multi-region consensus, you'll only be alerted when your Hono API is genuinely unreachable from multiple locations — not when a single probe node has a network hiccup.

Monitoring Hono on Different Runtimes

Cloudflare Workers

# Your Workers URL
https://your-api.your-account.workers.dev/health
# Or with custom domain
https://api.yourdomain.com/health

Bun

import { Hono } from 'hono';

const app = new Hono();

app.get('/health', (c) => c.json({ status: 'ok' }));

export default {
  port: 3000,
  fetch: app.fetch,
};

Monitor: https://your-bun-api.com/health

Node.js (with @hono/node-server)

import { serve } from '@hono/node-server';
import { Hono } from 'hono';

const app = new Hono();
app.get('/health', (c) => c.json({ status: 'ok', timestamp: new Date().toISOString() }));

serve({ fetch: app.fetch, port: 3000 });

Monitor: https://your-node-api.com/health

Deno

import { Hono } from 'npm:hono';

const app = new Hono();
app.get('/health', (c) => c.json({ status: 'ok' }));

Deno.serve(app.fetch);

Multi-Region Edge Monitoring

Hono's killer feature is its edge deployment capability — your Workers can run in 200+ Cloudflare data centers. This means users in Tokyo, Frankfurt, and São Paulo all get a nearby replica of your API.

But this also means an outage might be regional — your API works in the US but fails in Asia because of a D1 routing issue. Vigilmon's global probe network detects these regional failures:

• Each check runs from multiple independent probe nodes
• A failure in one region doesn't trigger an alert (could be the probe, not your API)
• An alert fires when 3+ regions simultaneously confirm the failure
• This catches true regional outages while ignoring transient single-probe issues

Heartbeat Monitoring for Hono Scheduled Tasks

Cloudflare Workers supports cron triggers. Monitor these with Vigilmon heartbeats:

// wrangler.toml
[triggers]
crons = ["0 * * * *"]  # Every hour

// Worker
export default {
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    // ... cron logic ...

    // Ping Vigilmon heartbeat
    await fetch(`https://vigilmon.online/api/heartbeat/${env.VIGILMON_HEARTBEAT_ID}`);
  },

  async fetch(request: Request, env: Env) {
    return app.fetch(request, env);
  },
};

If your cron Worker runs but fails to ping Vigilmon, you'll be alerted.

Complete Monitor Setup for a Hono API

Monitor	URL	Interval	What It Catches
Health check	/health	60s	App + binding failures
Root route	/	60s	Routing failures
SSL certificate	Your domain	Daily	Cert expiry
Cron heartbeat	Via heartbeat ID	Per schedule	Silent cron failures

Conclusion

Hono's speed and edge-first design are significant advantages — but no framework gives you visibility into whether users can actually reach your API from the internet. External monitoring with Vigilmon closes that gap in 2 minutes.

Add your Hono API to Vigilmon — free tier, no credit card required.