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Redirect chains are silently slowing your site — here's how to find and fix them

Redirect chains are silently slowing your site — here's how to find and fix them

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4 min read
I graded 35 big sites' security headers. Even the strong ones forget one.

I graded 35 big sites' security headers. Even the strong ones forget one.

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3 min read
HTTP & Networking Fundamentals: The Protocol Every Developer Works With

HTTP & Networking Fundamentals: The Protocol Every Developer Works With

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10 min read
Your video breaks when you serve it from your own server, and 416 is usually the reason

Your video breaks when you serve it from your own server, and 416 is usually the reason

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6 min read
How does a server understand "hii"? The underneath mechanism of HTTP, WebSockets and WebRTC

How does a server understand "hii"? The underneath mechanism of HTTP, WebSockets and WebRTC

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9 min read
From an empty folder to a running REST API in 5 minutes. In Delphi. In 2026.

From an empty folder to a running REST API in 5 minutes. In Delphi. In 2026.

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4 min read
HTTP 429 and SEO: Make Crawl Throttling Temporary and Verifiable

HTTP 429 and SEO: Make Crawl Throttling Temporary and Verifiable

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6 min read
Your Error Tracker Shows Zero Crashes Because It Lives Inside the Thing That Crashed

Your Error Tracker Shows Zero Crashes Because It Lives Inside the Thing That Crashed

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3 min read
Our rate limit page was itself rate limited, so browsers looped instead of reading it

Our rate limit page was itself rate limited, so browsers looped instead of reading it

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4 min read
Standardizing HTTP Resilience Library Behavior in JavaScript for Predictable Performance Across Scenarios

Standardizing HTTP Resilience Library Behavior in JavaScript for Predictable Performance Across Scenarios

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10 min read
My webhook catcher logged the same event six times — the sender's retry clock was shorter than my handler

My webhook catcher logged the same event six times — the sender's retry clock was shorter than my handler

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2 min read
Our link audit called two citations broken, and curl proved it right and wrong at the same time

Our link audit called two citations broken, and curl proved it right and wrong at the same time

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4 min read
A shared cache decides whether an authenticated page is private, and `Vary` is the header that says so

A shared cache decides whether an authenticated page is private, and `Vary` is the header that says so

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Comments 1
4 min read
`Content-Disposition` decides a filename, and the filename is where a download becomes a write

`Content-Disposition` decides a filename, and the filename is where a download becomes a write

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4 min read
The SMS provider told us when to come back and we heard now

The SMS provider told us when to come back and we heard now

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2 min read
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