zlacker

uWebsockets, which is the foundation of the network and http server stack in Bun, as I understand it, is a compatible 3rd party extension to Node.js that gives it similar performance on HTTP implementation.

The key architectural difference is that Node.js implements the HTTP stack and other low level libraries in JavaScript, which gives it memory safety guarantees provided by the v8 runtime, while Bun/uWebsockets are a zig/C++ implementation. for Node.js, which is focused on enterprise adoption, the lower performance JS approach better aligns with the security profile of their enterprise adoption target.