Aug 15, 2026 · Cloud Native

Ryan Dahl Unveils celld – A Self‑Hosted Distributed Durable Objects Platform

Ryan Dahl, the creator of Node.js, announced celld—a self‑hosted, distributed implementation of Cloudflare Workers and Durable Objects that promises lower costs, uses S3 storage, Rust/Tokio runtime, and supports stateful serverless workloads such as real‑time collaboration and AI agents.

CloudflareDurable ObjectsRust

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Ryan Dahl Unveils celld – A Self‑Hosted Distributed Durable Objects Platform

Node.js Tech Stack

Aug 7, 2026 · Backend Development

Why Ryan Dahl Defied His Promise and Built the celld JavaScript Runtime

After vowing never to create another JavaScript runtime, Ryan Dahl spent over a year developing celld, an open‑source, self‑hosted distributed runtime that brings Cloudflare Workers and Durable Objects to your own machines, using V8, SQLite, Rust async, and S3 for coordination, while exposing its performance trade‑offs and early‑stage limitations.

Cloudflare WorkersDurable ObjectsJavaScript runtime

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Why Ryan Dahl Defied His Promise and Built the celld JavaScript Runtime