Rust: Tokio vs Async-Std - Which Should I Use?

What's the difference between Tokio and Async-Std in Rust?

Tokio and Async-Std are both asynchronous runtimes for Rust, but they have different design philosophies and use cases. Tokio is more feature-rich and is often used for high-performance applications, while Async-Std aims for simplicity and ease of use, resembling the standard library.

Which one should I choose for a web server?

If you're building a web server, Tokio is generally recommended due to its performance and extensive ecosystem, including libraries like Hyper for HTTP.

Are there any performance benchmarks comparing them?

Yes, there are benchmarks available that show Tokio often outperforms Async-Std in high-load scenarios, but the best choice can depend on your specific use case.

Can I switch from Async-Std to Tokio later?

Yes, you can switch from Async-Std to Tokio later, but it may require some refactoring of your code, especially if you rely on specific Async-Std features.