[emporas]

Python's startup cost is terrible. Same with Node. Go is very good, but Rust is excellent.

Even if a GC'ed language like Go is very fast at allocating/deallocating memory, Rust has no need to allocate/deallocate some amount of memory in the first place. The programmer gives the compiler the tools to optimize memory management, and machines are better at optimizing memory than humans. (Some kinds of optimizations anyway.)

[nasretdinov]

TBH I'm still surprised how quickly Go programs start up given how much stuff is there in init() functions even in the standard library (e.g. unicode tables, etc)