Guides on domain management, SSL certificates, and keeping your websites online.
June 8, 2021: Fastly went down and took Reddit, Amazon, and Gov.uk with it. Every uptime monitor said 'all green' the entire time. Here's why they couldn't see it, and what you actually need to check.
Subresource Integrity makes your site safer — except when a CDN update bumps a file and your pinned hash no longer matches. The fetch returns 200 OK, the browser silently refuses to run the script, and your uptime monitor never notices.
Create status pages that update automatically from monitoring data. Detects CDN and third-party outages, not just server downtime. Free forever.
Website dependency monitoring checks the external resources your site relies on — CDNs, fonts, scripts, APIs. Learn why 93% of websites are vulnerable to third-party failures that traditional monitors miss.
A practical guide to finding and monitoring external resources your website depends on — CDNs, scripts, fonts, and APIs. Includes free tools and step-by-step setup.
HTTP 200 doesn't mean your page works. From soft 404s to broken checkouts — here are the failure modes that status code monitoring completely misses, and how to catch them.
847ms response time doesn't tell you much. Is it slow DNS? Network latency? The server itself? Here's how to break it down with Go's httptrace.
If your domain monitoring tool only uses WHOIS, it can't check .dev, .app, .page and dozens of other TLDs. Here's why, and how RDAP fixes it.
InsecureSkipVerify skips all certificate validation. Your monitor says '53 days left' while users see browser warnings. Here's the two-step pattern that catches everything.
Your uptime monitor says everything is fine. Your users see a broken page. Here's why traditional monitoring lies and what actually works.
A complete timeline of domain expiration — from grace period to public auction. Learn the real cost of losing a domain and how to protect yourself.
How to monitor domain expiration dates, choose between WHOIS and RDAP, and set up automated alerts so you never lose a domain.
WHOIS has been the standard for domain lookups since the 1980s. RDAP is its modern replacement. Here's what changed, why it matters, and which one you should use.