Uptime & monitoring

Guides on uptime monitoring: how Ravnsight confirms an outage from several countries before an alert goes out, how response times are measured from DNS to the last byte, and the difference between down, degraded and a warning. Learn how to avoid false alarms and read the timeline when something actually happens.

2026-10-06 5 min read

TCP Port Monitoring: Catching the Silent Service Failures HTTP Checks Miss

An HTTP check only sees the homepage. TCP monitoring of mail, database and API ports reveals silent service failures before customers do.

2026-09-08 5 min read

Autumn Storms and Hosting Power Outages: Why Downtime Isn't Always Your Fault

Autumn storms knock out power at hosting providers every year. Learn why multi-country monitoring is essential to tell real outages apart from local network glitches.

2026-09-05 3 min read

Security headers explained: what they are and why they matter

HSTS, CSP, X-Frame-Options and the rest — the HTTP headers that harden your site against common attacks, what each one does, and how to add them.

Security

Kristoffer Pihlfelt

2026-09-02 5 min read

Uptime monitoring vs synthetic monitoring: what's the difference

A 200 OK doesn't mean the site works. Understand the difference between uptime and synthetic monitoring, and when you need which.

Uptime Alerts

2026-09-02 5 min read

Intermittent 502 / 503 errors: how to catch what you can't reproduce

Errors that vanish the moment you look. Causes of intermittent 502/503, why they're hard to catch by hand, and how logs and continuous checks reveal the pattern.

2026-08-12 3 min read

Website monitoring without false alarms: how confirmation works

Most monitoring tools alert on the first failed request. That is why people turn them off. Here is the method that avoids it.

Uptime Alerts

2026-08-14 3 min read

Your SSL certificate expired. How to never let it happen again

Browsers block the whole site, customers assume you were hacked, and the fix takes five minutes – once you notice. Here is how to notice two weeks early.

Uptime SSL

2026-08-18 2 min read

DNS changes: the outage nobody sees coming

A wrong A record, a lost MX, a hijacked nameserver. DNS fails quietly and late. Monitoring it is cheap.

Uptime DNS

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