Introducing workerd: the Open Source Workers runtime

Today, Kenton Varda introduces the first beta release of workerd, an open-source JavaScript/Wasm runtime based on the same code that powers Cloudflare Workers. It is designed to be unopinionated about hosting environments and can be used for self-hosting applications. The name "workerd" comes from the Unix tradition of naming servers with a "-d" suffix standing for "daemon". workerd provides an alternative model for microservices, called nanoservices, which achieve the benefits of independent deployment with overhead closer to that of library calls. It also offers homogeneous deployment and capability bindings for cleaner configuration and SSRF safety.