dearsky/numa
1
0
Fork 0
Code Issues 10 Pull Requests 1 Actions Packages Projects Releases 25 Wiki Activity

blog: add fixing DoH tail latency post + blog infrastructure

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

11
site/blog/index.html
View File

@@ -168,10 +168,17 @@ body::before {
<main class="blog-index">
<h1>Blog</h1>
<ul class="post-list">
<li>
<a href="/blog/posts/fixing-doh-tail-latency.html">
<div class="post-title">Fixing DNS tail latency with a 5-line config and a 50-line function</div>
<div class="post-desc">We had periodic 40-140ms DoH spikes from hyper's dispatch channel. The fix was reqwest window tuning and request hedging — Dean & Barroso's "The Tail at Scale," applied to a DNS forwarder. Same ideas took our cold recursive p99 from 2.3 seconds to 538ms.</div>
<div class="post-date">April 2026</div>
</a>
</li>
<li>
<a href="/blog/posts/dot-from-scratch.html">
<div class="post-title">DNS-over-TLS from Scratch in Rust</div>
<div class="post-desc">Building RFC 7858 on top of rustls — length-prefix framing, ALPN cross-protocol defense, iPhone dogfooding, and two bugs that only the strict clients caught.</div>
<div class="post-desc">Building RFC 7858 on top of rustls — length-prefix framing, ALPN cross-protocol defense, and two bugs that only the strict clients caught.</div>
<div class="post-date">April 2026</div>
</a>
</li>
@@ -185,7 +192,7 @@ body::before {
<li>
<a href="/blog/posts/dns-from-scratch.html">
<div class="post-title">I Built a DNS Resolver from Scratch in Rust</div>
<div class="post-desc">How DNS actually works at the wire level — label compression, TTL tricks, DoH implementation, and what I learned building a resolver with zero DNS libraries.</div>
<div class="post-desc">How DNS actually works at the wire level — label compression, TTL tricks, DoH, and what surprised me building a resolver with zero DNS libraries.</div>
<div class="post-date">March 2026</div>
</a>
</li>