Kino: High-Performance Ractor-Based Web Server Built for Ruby 4.0

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Kino is a new web server project designed specifically for Ruby 4.0, leveraging Ruby's Ractor concurrency model for high performance. The project is being developed by GitHub user yaroslav and is publicly available as an open-source repository. Ractors, introduced in Ruby 3.0, enable true parallel execution by isolating objects between concurrent units, making them a promising foundation for performant web servers. The project has attracted early attention on Hacker News, signaling developer interest in Ruby's evolving concurrency capabilities.

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