Why Your Website Can Be "Up" And Still Broken: A Deep Dive Into Latency Phases

May 29, 2026 · 6:34 AM UTC ·2 min read · 0 reactions · 0 comments · 29 views

#webdev #performance #monitoring #devops

TL;DR · WeSearch summary

The article discusses how website uptime monitors can miss critical performance issues despite indicating that a server is operational. It outlines the four phases of an HTTP request and highlights the importance of monitoring each phase to identify specific problems. By using tools that break down these phases, website owners can more effectively diagnose and resolve latency issues.

Key facts

▪Most uptime monitors only indicate whether a server is responding, missing the full user experience picture.
▪The four phases of an HTTP request include DNS Lookup, TCP Connect, TLS Handshake, and Time to First Byte.
▪Monitoring tools like WhistleBlower can help identify which specific phase of the request chain is failing.

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Original publisher	DEV.to (Top)
Canonical URL	https://dev.to/adarshshukla/why-your-website-can-be-up-and-still-broken-a-deep-dive-into-latency-phases-26hc
Publication time	Fri, 29 May 2026 06:34:04 +0000
Retrieval time	2026-05-29T06:49:57.540Z
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Opening excerpt (first ~120 words) tap to expand

try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3943664) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Adarsh Shukla Posted on May 29 Why Your Website Can Be "Up" And Still Broken: A Deep Dive Into Latency Phases #webdev #performance #monitoring #devops Why Your Website Can Be "Up" And Still Broken Most uptime monitors tell you one thing: is the server responding? But that binary answer misses the full picture of what your users actually experience. The 4 Phases of Every HTTP Request Every time a browser loads your website, it goes through 4 distinct phases: 1.

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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).

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