The only performance issues with stdout is if you write to a console, the console is rendering it. For example, printing 100000 lines of `Hello World!` to stdo

The only performance issues with stdout is if you write to a console, the console is rendering it. For example, printing 100000 lines of `Hello World!` to stdout takes 2.134 seconds when output to a console on my computer, 43 milliseconds when redirected to `nul`, (the equiv of > /dev/nul), and 276 milliseconds when redirected to a file. So saying stdout is a performance issue is just FUD. Now, there's still issues with error handling, but that can be solved by implementing a message protocol over stdin/stdout, and you still have a cost associated with launching the binary, but that can similarly be replaced with message protocol over stdin/stdout, allowing the same running instance to serve multiple requests.