Simon Willison’s Weblog

3rd December 2010 - Link Blog

Google and Microsoft Cheat on Slow-Start. Should You? Fascinating optimisation tricks by some of the big websites, which violate the RFC governing the TCP slow-start algorithm in order to perform better in the common case.

Posted 3rd December 2010 at 7:03 pm

Recent articles

Changes in the system prompt between Claude Opus 4.6 and 4.7 - 18th April 2026
Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year - 17th April 2026
Qwen3.6-35B-A3B on my laptop drew me a better pelican than Claude Opus 4.7 - 16th April 2026

This is a link post by Simon Willison, posted on 3rd December 2010.

google 404 microsoft 126 networking 22 performance 95 recovered 213

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe