Gears

Lesson in the Scala Roadmap · Stage 28: Concurrency

Last updated 14 September 2026

What is Gears?

Gears is an experimental asynchronous programming library for Scala 3. It is designed to enable direct-style programming, structured concurrency, and is cross-platform, working on both JVM >=21 and Scala Native. Gears provides a simple and structured way to handle concurrent programming, minimizing computation leaks and offering tools for dealing with external, unstructured events.

Study this in the interactive course See the whole Scala roadmap

Free resources to learn Gears

Official docsGears Documentation
BookGears Book

Gears: common questions

Can I learn Gears in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Gears in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Gears tutorial for beginners?

It is lesson 132 of 165 in the free Scala roadmap, in stage 28, Concurrency. If you are new to Scala, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.