What are the differences between Rust async libraries?

What are the differences between Rust async libraries?

There are several popular async libraries in Rust, including Tokio, async-std, and smol. Each has its own strengths and use cases.

Can you explain the main features of Tokio?

Tokio is a runtime for writing reliable network applications without compromising speed. It provides a multi-threaded, work-stealing scheduler and is highly performant.

How does async-std compare to Tokio?

async-std aims to provide a familiar API similar to the standard library, making it easier for developers transitioning to async programming. It is simpler but may not be as performant as Tokio for heavy workloads.

What about smol? Is it lightweight?

Yes, smol is designed to be a minimal and lightweight async runtime. It's great for small applications or when you want to avoid the overhead of larger libraries.

Which one should I choose for a web server?

For a web server, Tokio is often recommended due to its performance and ecosystem support, but async-std can also be a good choice for simpler applications.