Best Error Tracking Tools 2026: Sentry, Rollbar & More
The best error tracking tools in 2026 compared — Sentry, Rollbar, Bugsnag, Datadog, and Honeybadger — by use case, pricing, and uptime fit.
Error Monitoring vs Uptime Monitoring: Why You Need Both
Error tracking (Sentry, Rollbar) catches code exceptions; uptime monitoring catches outages that produce no errors. Why running only one is a blind spot.
4xx Errors Explained: 400, 401, 403, 404, 429 & Fixes
What 400, 401, 403, 404 and 429 really mean, what causes each, which 4xx spikes should page you at 3am, and how to monitor them before Google notices.
5xx Error Rate Monitoring: 500, 502, 503 Alert Guide
Track 5xx server error rates in production. Set alerts on 500, 502, 503 patterns and distinguish app bugs from infrastructure failures.