Hood Chatham

Making Rust Workers reliable: panic and abort recovery in wasm‑bindgen

2026-04-22

Cloudflare Workers Rust Rust Workers WebAssembly WASM Reliability Engineering Open Source Developer Platform Developers

Panics in Rust Workers were historically fatal, poisoning the entire instance. By collaborating upstream on the wasm‑bindgen project, Rust Workers now support resilient critical error recovery, including panic unwinding using WebAssembly Exception Handling....

Python Workers redux: fast cold starts, packages, and a uv-first workflow

2025-12-08

Cloudflare Workers Python

Recent advancements in Cloudflare Python Workers means fast cold starts, comprehensive package support, and a great developer experience. We explain how they were achieved and show how Python can be used to build serverless applications on Cloudflare....

Bringing Python to Workers using Pyodide and WebAssembly

2024-04-02

Developers Cloudflare Workers WebAssembly Python Developer Platform WASM Developer Week

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...