I was researching multiple high performance, concurent//parallel languages for the needs of authentication and authorization server, to be built on microservice architecture and Linux OS. Node.js with its asynchronous behavior and event loop suits the case best. Python Django & Flash turns to be slower and .NET Core & Framework wasn't the best choice for the Linux environment at the time (summer 2018).

I also tested Go lang and Rust, although they didn't meet the quick prototyping criteria as both languages are young and lacking libraries or battle-tested ORM.