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I strongly disagree with this statement, Golang is excellent for building backends and just the orchestration of all the services you are calling is better done in a typed/compiled language with great multi threading support and fast compilation times that is exactly what Golang excels at.

This is trying to solve a problem a lot of people never really had. I've never been working on an Express backend and thought gee, wish I had threading.

using a systems language for a backend mainly gains throughput over python than latency. each request might not be faster but you can handle 100x more users.

Amdahl's law, it won't be 100x when my server is waiting on RPCs and other I/O most of the time anyway

Not true. Go is also made for this.

Node is awful with lots of connections. Go gives me way fewer bugs, easier to properly trace, static typing is a blessing, etc.

With a db that can handle thousands upon thousands of connections, Go trounced Node in my experience