Ask HN: Replacing NodeJs API, What Framework?

I am having some scalability issue with a nodejs backend and was considering a full rewrite, as it was initally developed as a "prototype" that became the production app. I've been exploring using python with Django or perhaps using Go with Gin, it needs to support a few common things, mongodb, redis, twilio (http api) and saleforce. I know its a little vague, but i want to gauage opinion on what the right tool is to make the scaling cheaper.