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.