Why is CI so Damn Slow?

DevOps.js

DevOps.js Conf 2022

Nicholas Yang

Porting Turborepo to Rust

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Everybody loves talking about Rewriting in Rust, but rewrites are hard. It’s far too easy to fall into second system effect, shipping delays, and end up losing all your users. How can you move to Rust while still shipping features and keeping your users happy? Easy, instead of rewriting, port! In this talk, we’ll go over how we ported Turborepo from Go to Rust using three different strategies: a Rust shim that wrapped the existing Go code; a Rust-Go-Rust sandwich to incrementally port dependencies; and finally a completely parallel Rust implementation. We’ll talk about why we chose these strategies, how we went about implementing them, and how we shipped them to users.

We've all asked ourselves this while waiting an eternity for our CI job to finish. Slow CI not only wrecks developer productivity breaking our focus, it costs money in cloud computing fees, and wastes enormous amounts of electricity. Let’s take a dive into why this is the case and how we can solve it with better, faster tools. <a href="https://www.froala.com/wysiwyg-editor?pb=1"> </a>