Why response time is a crawl-budget problem
Slow TTFB throttles how much of your site Google crawls. The math and the fix.
RRJul 19, 2026
The RacingRoach blog
Technical SEO, for people who fix things.
Field notes on crawlability, Core Web Vitals, redirects, and structured data — plus release highlights and the engineering behind a crawler that never runs out of RAM.
Engineering
How we crawl a million URLs in bounded memory
A walkthrough of the streaming pipeline — frontier backpressure, single-transaction storage, and why RAM stays in the hundreds of MB instead of the tens of GB.
Latest articles
Performance
Redirects
Redirect chains are quietly costing you rankings
Every hop dilutes link equity and adds latency. Find and flatten them in one pass.
RRJul 19, 2026
Crawlability
How to read a 404 report without panicking
Not every broken link is an emergency. A framework for triaging response-code errors.
RRJul 19, 2026
Guide
The complete technical SEO checklist
Every check RacingRoach runs, organized by severity — the way you should actually work it.
RRJul 19, 2026
Engineering
Designing a crawler that triages instead of dumps
The product thinking behind the severity-first Issues screen.
RRJul 19, 2026
Crawlability
JavaScript rendering: when you actually need it
Text-only is faster and covers most sites. A decision tree for switching on Chromium.
RRJul 19, 2026