Our Stack · Fly Docs

Documentation and guides from the team at Fly.io.

*)]:mx-auto [body_:where(&>*)]:max-w-2xl [body:not(.toc)_:where(&>*)]:lg:mx-[calc(50%-min(50%,35rem))] [body_:where(&>*)]:lg:max-w-3xl min-w-0 relative"> Our Stack Our platform, the stuff that actually runs apps for our customers, is built on Rust and Go. Developers on all of our platform teams switch-hit between those two languages. We love them both, and that's an attribute we're looking for in platform devs. When a user aims their browser at an app hosted on Fly.io, they're talking to fly-proxy , a Rust / Tokio / Hyper proxy that powers our Anycast network. fly-proxy uses attache , our Go S

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