Ruby on Rails Monitoring
Monitor Rails sites for 500s, Action Cable drops, and asset pipeline 404s.
What typically breaks on Ruby on Rails
- Asset fingerprint mismatch after deploy (404 on CSS/JS)
- Sidekiq queue backlog ballooning quietly
- ActionMailer SMTP timeouts during traffic spikes
What Lemwatch checks on every Ruby on Rails site
HTTP uptime
1-minute checks from multiple regions. We catch Ruby on Rails-specific 5xx errors, not just connection timeouts.
Response time + Core Web Vitals
TTFB, LCP, CLS, INP tracked over time. Alerts fire when the rolling baseline degrades, not just on hard outages.
Content integrity
We diff your homepage HTML and key routes. Catch silent deploys that strip critical content or break routing.
SSL + DNS drift
Cert expiry warnings 30 days out. DNS hash watch alerts when A/CNAME/MX records change unexpectedly.
Works with where you deploy Ruby on Rails
Lemwatch monitors the public surface, so it doesn't care which host you use. Common Ruby on Rails hosting stacks we see in the wild:
How we detect Ruby on Rails
When you add a site, Lemwatch fingerprints the stack from the public response — in Ruby on Rails's case, by looking for X-Powered-By or csrf-token meta tag with Rails signature. Detection is non-invasive and runs on every health check, so a stack migration surfaces in your changelog within 24 hours.
Ruby on Rails monitoring — FAQs
No. Lemwatch is fully black-box — it monitors what every visitor sees. No code access, no plugin install, no SDK. Add your domain and checks start within a minute.
Yes. Add the preview URL as a separate site. Lemwatch treats it independently, so flaky previews don't pollute the production status board.
The Free plan covers 10 sites with 5-minute checks. The Pro plan ($19/mo) bumps frequency to 1 minute and unlocks Core Web Vitals tracking, screenshot diffs, and unlimited notification channels.
Both. We watch for 5xx rate spikes, response-time regressions vs. baseline, content diff anomalies (missing H1, blank body), and certificate / DNS shifts — not just up/down.
Other frameworks we monitor
Start monitoring your Ruby on Rails site in 60 seconds
Free plan. No credit card. No code changes.
Get started — free