Hey HN,<p>Meet "Itsi", a high‑performance, all‑in‑one HTTP server and proxy with first-class Ruby support. It's a drop‑in replacement for your current Rack server, built on Hyper and Tokio, ships with batteries‑included middleware, and lets you go from dev to production without any surprises.<p>Itsi is my attempt at eliminating the disparity that commonly exists between production and non-prod environments. A single, efficient process containing everything you need to serve your app, equally at home on a Raspberry Pi or local dev box as it is on your production VPS or Kubernetes cluster.<p>You get a broad set of built-in security and performance features (rate limits, JWT auth, CSP, intrusion-protection, automated certs, compression, ETag support, cache-control, etc.), an ergonomic dev experience with bundled RubyLSP support, zero-downtime config reloads, first-class Ruby gRPC handler support, Fiber-scheduler mode (à la Falcon), and more—all in one minimal library.<p>In addition to native performance on par with top Rust and C servers, Itsi’s big wins come from replacing Ruby middleware and application-level concerns with native equivalents, freeing your Ruby CPU cycles for the logic that actually matters.<p>Itsi is new but well-tested and already powering small production apps. I’d love to hear from eager early adopters who can help kick the tires and battle-test it.<p>Thank you!