dial9: from black box to insight in Tokio

<p>episode 37: dial9: from black box to insight in Tokio.</p><p></p><p>In this episode of <a rel="noopener noreferrer nofollow" href="http://Netstack.fm" target="_blank">Netstack.fm</a>, Glen talks with Jess Izen and Russell Cohen from Amazon about Dial9, a new tool for understanding what’s happening inside Rust and Tokio applications. They explain how it captures events from different layers of your system and puts them into a single timeline, making it much easier to debug tricky performance issues and unexpected behavior.<br /></p><p>They also share how Dial9 came out of real debugging challenges at Amazon, where engineers often had to rely on complex, low level tools. The goal with Dial9 is to make those kinds of insights more accessible, so developers can diagnose problems faster and with less guesswork, while the tool continues to evolve with new features and improvements.</p><p></p><p><b>Learn more:</b></p><p></p><ul><li><a rel="noopener noreferrer nofollow" href="https://www.youtube.com/watch?v=yTlThfOcslM" target="_blank">https://www.youtube.com/watch?v=yTlThfOcslM</a> — TokioConf 2026 - Lightning Talk: dial9: WTF is Tokio actually doing? by Russell Cohen</li></ul><ul><li><a rel="noopener noreferrer nofollow" href="https://tokio.rs/blog/2026-03-18-dial9" target="_blank">https://tokio.rs/blog/2026-03-18-dial9</a> — Introducing dial9: a flight recorder for Tokio</li><li><a rel="noopener noreferrer nofollow" href="https://github.com/dial9-rs/dial9-tokio-telemetry" target="_blank">https://github.com/dial9-rs/dial9-tokio-telemetry</a> — source code (Tokio Telemetry you can run in production)</li><li><a rel="noopener noreferrer nofollow" href="https://github.com/dial9-rs/dial9-tokio-telemetry/blob/main/dial9-trace-format/SPEC.md" target="_blank">https://github.com/dial9-rs/dial9-tokio-telemetry/blob/main/dial9-trace-format/SPEC.md</a> — trace format spec</li><li><a rel="noopener noreferrer nofollow" href="https://www.youtube.com/watch?v=kr0RYMu57kU" target="_blank">https://www.youtube.com/watch?v=kr0RYMu57kU</a> — demo walkthrough (slightly outdated)</li><li><a rel="noopener noreferrer nofollow" href="https://github.com/dial9-rs/dial9-tokio-telemetry/blob/main/dial9-tokio-telemetry/examples/production_use.rs" target="_blank">https://github.com/dial9-rs/dial9-tokio-telemetry/blob/main/dial9-tokio-telemetry/examples/production_use.rs</a> — example</li></ul><p></p><p><b>Rama</b></p><p></p><p>If you like this podcast you might also like our modular network