[discussedbefore]

Microsoft's Bing group customized Node.js for CPU-bound tasks: https://github.com/Microsoft/napajs/wiki/Why-Napa.js

Napa.js: A multi-threaded JavaScript runtime https://news.ycombinator.com/item?id=15498219 (Nov 2017)

Their deal-breaker against using node-cluster was a need to use shared memory for IPC.