Uploaded October 2025 | Updated September 2026, 2 weeks ago

---

👉 This is a follow-up from youtube.com/watch?v=9cEcX_a8on8

Have you wondered how fast is Varnish HTTP Cache (soon to be renamed to Vynil) when CPU & network are not a bottleneck? FWIW, this HTTP benchmark is for the open-source CDN that powers changelog.com: github.com/thechangelog/pipely

My 10Gbit connection was the bottleneck last time, so I went to work:
- Ryzen 7 5800X for the client, github.com/hatoo/oha
- Threadripper 9970X for the server, Varnish 7.7
- 2 x 100gbit NVIDIA Mellanox ConnectX-5 connecting both hosts via QSFP28 DAC
- Adam Stacoviak & Jerod Santo as my "partners in crime"

If you enjoyed this, there's more to it:
- Full conversation: youtube.com/watch?v=hYahjUGoy5Y
- Join the most loyal members for small group discussions every 2 weeks 🪩 makeitwork.club
- Subscribe at 📺 makeitwork.tv for the full length content
- Tune into 🎧 https://makeitwork.fm for the podcast

00:00 - Intro
00:33 - 64vCPU @ 5.4GHz max boost
01:36 - 16vCPU @ 4.7GHz max boost
02:26 - MCX556A-ECAT
04:05 - 20Gbps HTTP benchmark
06:16 - 40Gbps HTTP benchmark
08:24 - 80Gbps HTTP benchmark
10:01 - changelog.com on Vynil on Fly.io
11:11 - What's next?
14:45 - One more thing...