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Comment by lupire | Hacker News Reader

I liked the part where they said Python is too slow because it's garbage collected, and didn't show any metrics, and then built a new solution and Rust and didn't show metics to compare to the original system.

Makes me think the eng lead just wanted to do Rust, and made up a rationalization.

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Well, we already know Python is inherently slower than Rust or any compiled language really, so does one really need metrics to know that the Rust implementation was faster?

Yes. If your bottleneck is magnetic disc seeking times, no amount of language change is going to move the needle (hah!).

a perf change without perf numbers is a bug

Show me metrics where Python can compete with Java/Go, then we can bother with some discussion about Python vs C++/Rust. Actually, show me where Python is faster than Javascript.

But yes, it is a given that C++/Rust is faster than Python unless there is some fundamental algorithmic foolishness done by the C++/Rust programmer. People with industry experience know why that is a given.

Same, "We knew that C++ was harder to scale and maintain high quality as you build a dev team" this just sounds arbitary and a weak excuse to use rust, C++-20 is as scalable as rust with a very rich ecosystem.

> ...with a very rich ecosystem.

As someone who was heavy in C++14/17 it's much nicer in Go/Rust-land.

As much as I love Bjarne, I'm not coming back.

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