I wrote the old codebase ~4 years ago when I was just learning NodeJS, and didn't touch it too much after that, so it was in dire need of being replaced, in particular since it wasn't really written to scale horizontally.
Didn't have any particular issues with NodeJS in terms of performance, just felt like using Go when I was rewriting it.
Didn't have any particular issues with NodeJS in terms of performance, just felt like using Go when I was rewriting it.