Skip to main content
Start free

Performance guides and articles

Every CompleteStatus blog post tagged Performance — 9 articles, newest first.

performance ttfb

Why Is My Website Slow? Diagnosing Latency Layer by Layer

DNS, TLS, TTFB, download and front-end weight. A layer-by-layer method for finding where your page's time goes, starting with one curl command.

6 min read security supply-chain

The xz Backdoor: A Multi-Year Con Caught by Half a Second of Latency

A backdoor in xz-utils 5.6.0 and 5.6.1 targeted sshd on Linux. What we know three days in, how to check your systems, and why a slow login mattered.

6 min read monitoring synthetic

Synthetic Monitoring vs Real User Monitoring — What Each Catches, What Each Misses

Synthetic monitoring vs real user monitoring: what each catches, what each misses, what they cost, and why small teams should start synthetic-first.

6 min read http3 quic

HTTP/3 and QUIC, Explained — What Just Became a Standard Actually Changes

HTTP/3 is now a Proposed Standard. What QUIC's UDP transport, built-in TLS 1.3 and connection migration change, and what they mean for monitoring.

6 min read redirects http

Redirect Chains — What Every Extra Hop Costs, and How to Monitor Them

How http→https→www→slash stacks into 3–4 hops, what each hop costs in DNS and TLS handshakes, the apex-vs-www certificate gotcha, and how to monitor the chain.

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 during 2020's surge.

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 security performance

Meltdown and Spectre: Why Your Site May Get Slower Without a Single Deploy

Meltdown and Spectre patches carry a real performance cost. Why your site may get slower with no code change, and why to baseline response times now.

6 min read http2 performance

HTTP/2 Is Ready: What It Actually Means for Your Site

HTTP/2 is now practical to deploy. What multiplexing and header compression change, how to enable it on nginx, and which old habits to unwind.

5 min read

More topics

Back to all posts