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blog: add fixing DoH tail latency post + blog infrastructure

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New post on reqwest HTTP/2 window tuning and request hedging
(Dean & Barroso's "The Tail at Scale" applied to DNS forwarding).
Covers DoH forwarding p99 improvement and cold recursive
resolution from 2.3s to 538ms.

Also adds blog build infrastructure: index generation script,
draft preview server, hero metrics/before-after CSS, and
normalizes date format across existing posts.
This commit is contained in:
Razvan Dimescu
2026-04-13 13:49:40 +03:00
parent 169679bfe4
commit 6b0a30d004
10 changed files with 545 additions and 5 deletions
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blog/dns-from-scratch.md
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@@ -1,7 +1,7 @@
---
title: I Built a DNS Resolver from Scratch in Rust
description: How DNS actually works at the wire level — label compression, TTL tricks, DoH, and what surprised me building a resolver with zero DNS libraries.
date: March 2026
date: 2026-03-20
---
I wanted to understand how DNS actually works. Not the "it translates domain names to IP addresses" explanation — the actual bytes on the wire. What does a DNS packet look like? How does label compression work? Why is everything crammed into 512 bytes?