We shipped FinalizationRegistry in Workers: why you should never use it
2025-06-11
Cloudflare Workers now support FinalizationRegistry, but just because you can use it doesn’t mean you should....
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Bringing Python to Workers using Pyodide and WebAssembly
2024-04-02
Introducing Cloudflare Workers in Python, now in open beta! We've revamped our systems to support Python, from the runtime to deployment. Learn about Python Worker's lifecycle, dynamic linking, and memory snapshots in this post...
Wasm core dumps and debugging Rust in Cloudflare Workers
2023-08-14
Debugging Rust and Wasm with Cloudflare Workers involves a lot of the good old time-consuming and nerve-wracking printf'ing strategy. What if there’s a better way? This blog is about enabling and using Wasm core dumps and how you can easily debug Rust in Cloudflare Workers...
Use the language of your choice with Pages Functions via WebAssembly
2023-03-24
Today Pages is excited to offer support for WebAssembly when writing a Pages Function...
Running Zig with WASI on Cloudflare Workers
2022-08-01
After the recent announcement regarding WASI support in Workers I decided to see what it would take to get code written in Zig to run as a Worker, and it turned out to be pretty trivial. This post documents the process I followed...
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July 07, 2022 4:09 PM
Announcing support for WASI on Cloudflare Workers
Today, we are announcing experimental support for WASI (the WebAssembly System Interface) on Cloudflare Workers and support within wrangler2 to make it a joy to work with...
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September 09, 2021 1:00 PM
Native Rust support on Cloudflare Workers
Introducing the Cloudflare Workers Rust SDK: write your entire Worker in Rust, no JavaScript required. ...
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October 06, 2020 11:00 AM
Let's build a Cloudflare Worker with WebAssembly and Haskell
Let's combine the power of Haskell and WebAssembly in a Cloudflare Worker!...
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March 28, 2019 4:08 PM
? The Wrangler CLI: Deploying Rust with WASM on Cloudflare Workers
Today, we're open sourcing and announcing wrangler, a CLI tool for building, previewing, and publishing Rust and WebAssembly Cloudflare Workers. If that sounds like some word salad to you, that's a reasonable reaction....
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