The Pulsetic blog

Practical guides on uptime, monitoring, SSL, status pages and keeping a site online, from the team that builds the tools.

Guides
SSL Certificate Expiry Monitoring: The 30/15/7-Day Alert Rule

How to monitor SSL certificate expiry so a lapsed cert never takes your site down. The 30/15/7-day alert rule, what else to watch, and how to set it up.
30 June 2026
Guides
Synthetic Monitoring vs Real User Monitoring: Which Do You Need?

Synthetic monitoring vs real user monitoring (RUM): what each one measures, where each wins, and why most teams run both. A plain-English comparison.
30 June 2026
Reference
What Does 99.9% Uptime Actually Mean? (The Nines, Explained)

99.9% uptime allows about 43 minutes of downtime a month. Here is what every "nine" means in real minutes, how to calculate uptime, and why 99.99% is far harder.
30 June 2026

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