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How to Set Up Uptime Monitoring for Your SaaS Application

#monitoring #saas #uptime #startup

How to Set Up Uptime Monitoring for Your SaaS Application

Every minute your SaaS is down, you're losing money. Customers cancel, support tickets pile up, and your reputation takes a hit. This guide covers everything you need to set up reliable uptime monitoring for your SaaS using Vigilmon.

Why SaaS Needs Uptime Monitoring

SaaS products have unique monitoring needs:

  • Multiple entry points: Landing page, app, API, webhook endpoints
  • Customer expectations: Enterprise customers expect 99.9%+ uptime SLAs
  • Revenue dependency: Every hour of downtime = direct revenue loss
  • Trial conversions: New signups can't convert if the app is down
  • Status transparency: Users need to know when you're having issues

The SaaS Monitoring Checklist

Tier 1: Critical (Monitor Every Minute)

  • Main application URL
  • Login/auth endpoint
  • Core API endpoints
  • Checkout/billing flow

Tier 2: Important (Monitor Every 5 Minutes)

  • Marketing/landing pages
  • Documentation site
  • API webhooks
  • Admin dashboard

Setting Up Vigilmon for Your SaaS

Step 1: Create Core Monitors

  1. Sign in at vigilmon.online
  2. + New Monitor for each critical URL: 
   https://yourapp.com/health → App Health
   https://api.yourapp.com/health → API Health
   https://yourapp.com/login → Auth Flow
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  1. Set interval: 1 minute for critical endpoints
  2. Set regions: at least 2 for redundancy

Step 2: Add Health Check Endpoints to Your App 

// Node.js / Express
app.get('/health', async (req, res) => {
  const dbOk = await checkDatabase();
  const redisOk = await checkRedis();

  const status = dbOk && redisOk ? 200 : 503;
  res.status(status).json({
    status: status === 200 ? 'ok' : 'degraded',
    database: dbOk,
    cache: redisOk,
    timestamp: new Date().toISOString()
  });
});
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This lets Vigilmon detect database or cache failures, not just web server failures.

Step 3: Configure SSL Monitoring

Vigilmon automatically tracks SSL certificates on HTTPS monitors with expiry alerts at 30, 14, and 7 days.

Step 4: Set Up Alert Channels 

Slack #incidents → All severity levels
Email → Critical incidents only
PagerDuty → P0 incidents (24/7 on-call)
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Step 5: Create a Public Status Page

Vigilmon's status pages automatically update when monitors fail or recover. Configure a custom domain like status.yourapp.com to give users a place to check service health.

Defining Your SaaS Uptime SLA

SLA Allowed Downtime/Month
99.0% 7.3 hours
99.5% 3.6 hours
99.9% 43 minutes
99.95% 22 minutes
99.99% 4 minutes

Vigilmon's uptime reports help you verify you're meeting your SLA commitments.

Responding to SaaS Downtime

  1. Alert fires → on-call engineer paged
  2. Acknowledge the incident in Vigilmon
  3. Update status page — users see you're investigating
  4. Diagnose using your logs and metrics
  5. Fix and redeploy
  6. All clear → update status page, resolve incident
  7. Post-mortem → prevent recurrence

Conclusion

Uptime monitoring is non-negotiable for any SaaS. Vigilmon gives you:

  • ✅ 1-minute uptime checks
  • ✅ SSL certificate monitoring
  • ✅ Multi-region verification
  • ✅ Public status pages with custom domains
  • ✅ Slack/PagerDuty/email alerts
  • ✅ Uptime SLA reports

Start free — no credit card required. Add monitoring to your SaaS in under 5 minutes. Sign up at vigilmon.online.

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