Introducing workerd: the Open Source Workers runtime

What this post added

This post introduces workerd, the open-source JavaScript/Wasm runtime based on the same code that powers Cloudflare Workers. It details workerd's capabilities for self-hosting Workers, local development and testing, and programmable proxies. Key architectural features highlighted include its server-first design, adherence to web standard APIs, nanoservice architecture for efficient inter-service communication within a single process, homogeneous deployment model where every machine runs every service, and capability bindings for secure and configurable access to external resources, preventing SSRF attacks.