smol

Lesson in the Rust Roadmap · Stage 14: Cryptography

Last updated 14 September 2026

What is smol?

smol is a small, fast async runtime for Rust with minimal API and clean design. Built on async-std and Tokio, it supports async/await natively with efficient scheduling. Offers essential async functionality including timers, futures, and task management with superior performance in a lightweight package.

Study this in the interactive course See the whole Rust roadmap

Free resources to learn smol

Official docsSmol - Gist of Rust
Open sourcesmol-rs/smol: A small and fast async runtime for Rust
ArticleSmol Documentation

smol: common questions

Can I learn smol 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 smol 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 smol tutorial for beginners?

It is lesson 83 of 122 in the free Rust roadmap, in stage 14, Cryptography. If you are new to Rust, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.