Diffbrief Engineering daily

← Tuesday, September 29, 2026Performance & OSRelease

Cloudflare previews Emscripten support for Rust Workers

blog.cloudflare.com by Guy Bedford, Mitch Foley 12 min read Editor score 7/10

The experimental wasm-bindgen target improves compatibility for Rust code on Workers, and Cloudflare reports running a Tokio-based Minecraft server in a Durable Object with TCP ingress. The work expands options for bringing native Rust libraries and networked applications to WebAssembly platforms.

What
Cloudflare's experimental Emscripten target support brings native Rust and Tokio-based applications to Workers through wasm-bindgen.
How
Emscripten virtualizes timers, files, and sockets over Node.js APIs; a Rust Minecraft server ran in a Durable Object with TCP ingress.
Why it matters
Broader library compatibility and Tokio integration give engineers more options for deploying native Rust workloads in worker environments.
compile target support run Rust code Emscripten wasm-bindgen Workers Runtime
The toolchain takes Rust code through Emscripten and wasm-bindgen to the Workers Runtime. Sketched from the article's own text.

Read on blog.cloudflare.com →

Discussion

Discussion is not switched on yet. Use Note above to keep your own thoughts on this story.

Headline, summary, brief and diagram are written by a model from the source's own text; the link, byline and numbers come from the source. Read the original before relying on a claim.

Your note

Private to you. Stored in this browser, and synced to your account when you are signed in.