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The CompleteStatus Blog

Monitoring & security, explained

Practical, no-fluff guides on uptime and security monitoring — fixing security headers, email authentication, SSL certificates, and consolidating your monitoring stack.
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All posts security 23 uptime 21 monitoring 19 incidents 18 outages 10 tls 9 https 9 dns 8 ssl 8 performance 8 email-security 6 security-headers 5
uptime monitoring

What Is Uptime Monitoring? A Plain-English Guide for Website Owners

What uptime monitoring is, how HTTP checks work, which check interval to pick, where alerts should go — and what downtime really costs a small business.
· 6 min read
tls ssl

TLS 1.0 and 1.1 Are Being Shut Out — Time to Check What Your Server Negotiates

Chrome, Firefox and Edge now block TLS 1.0 and 1.1. How to test what your server negotiates, enable TLS 1.2/1.3 on nginx and Apache, and handle legacy clients.
· 6 min read
uptime performance

Monitoring During Traffic Spikes — Your Site Slows Down Before It Falls Down

Traffic spikes rarely kill a site without warning — response times drift first. Reading capacity signals and monitoring under load in 2020's surge.
· 6 min read
ssl tls

One-Year Certificates Are Coming — Apple Just Changed the Rules

From September 1, Safari will reject new TLS certificates valid longer than 398 days. What Apple's unilateral move means and how to get renewals ready.
· 6 min read
performance monitoring

Slow Is the New Down — Why Performance Is Availability

Users abandon slow sites long before a timeout, and degradation usually precedes outages. Why response-time trends belong in your uptime monitoring.
· 6 min read
dns redundancy

Choosing a DNS Provider — Redundancy for the Layer Everyone Forgets

DNS is the dependency in front of every other dependency. Anycast, secondary DNS, TTL strategy, DNSSEC trade-offs — how to pick and pair providers.
· 6 min read
cloudflare outages

One Bad Regex — Lessons From the July 2 Cloudflare Outage

A WAF rule with catastrophic backtracking pushed every Cloudflare edge CPU to 100% and served 502s worldwide. What the outage teaches every team.
· 6 min read
bgp outages

Yesterday's BGP Route Leak — How a Small ISP Rerouted the Internet

A Pennsylvania ISP's route optimizer leaked routes, Verizon propagated them, and traffic for Cloudflare and Amazon went sideways. What BGP teaches us.
· 6 min read
spa javascript

Monitoring Single-Page Apps — When 200 OK Means Nothing

SPAs return 200 with an empty shell even when a JS error blanks the page. Why classic uptime checks miss SPA failures — and what actually catches them.
· 6 min read
hsts https

The .dev TLD Is Here — and It's HTTPS-Only by Design

Google's .dev domains open to the public this month — and the whole TLD is HSTS-preloaded. What preloading means, and how to launch HTTPS-only from day one.
· 6 min read
tls security

TLS 1.3 Is Final — What RFC 8446 Changes and What to Do About It

TLS 1.3 is final — RFC 8446, four years and 28 drafts in the making. What changed, what got removed, and how to verify what your servers negotiate.
· 6 min read
https chrome

Chrome 68 Is Here — Every HTTP Page Now Says "Not Secure

Chrome 68 now labels every HTTP page Not Secure. A complete migration checklist: free certificates, redirects, mixed content, HSTS and what comes after.
· 6 min read

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