Cloudflare workerd Runtime Analysis: A Guide to the Server-Side JavaScript/Wasm Environment

Cloudflare's open-source project workerd is a server-side JavaScript/Wasm runtime derived from the same codebase that powers Cloudflare Workers. The repository documentation presents three main use cases: self-hosting as an application server, use as a local development tool, and use as a programmable forward or reverse HTTP proxy. Its design philosophy emphasizes server-first operation, compliance with web standards such as fetch(), a high-performance nanoservices architecture, and a configuration-driven capability-binding model.






