GitHub Load Balancer Director vs node-http-proxy: What are the differences?

Developers describe GitHub Load Balancer Director as "GitHub's open source load balancer". GLB Director is a Layer 4 load balancer which scales a single IP address across a large number of physical machines while attempting to minimise connection disruption during any change in servers. GLB Director does not replace services like haproxy and nginx, but rather is a layer in front of these services (or any TCP service) that allows them to scale across multiple physical machines without requiring each machine to have unique IP addresses. On the other hand, node-http-proxy is detailed as "A full-featured http proxy for node.js". node-http-proxy is an HTTP programmable proxying library that supports websockets. It is suitable for implementing components such as proxies and load balancers.

GitHub Load Balancer Director and node-http-proxy belong to "Load Balancer / Reverse Proxy" category of the tech stack.

GitHub Load Balancer Director and node-http-proxy are both open source tools. node-http-proxy with 10.3K GitHub stars and 1.54K forks on GitHub appears to be more popular than GitHub Load Balancer Director with 1.77K GitHub stars and 158 GitHub forks.