Fun story from before Rust was getting popular (years ago). So, I did a performance comparison to determine what language we should write our rules engine in. I compared Go, Rust, Node, and some others not worth mentioning.

At the time, I had experience with all but Rust.

Even knowing nothing, and working from scratch, the Rust POC was significantly faster. Just way, way, better.

That being said, I still chose Go due to productivity based on the language knowledge of the team to ease the transition (Go was closer to what they knew already), and while it was good for them to learn Go, I look back on it and realize Rust would have been a great opportunity to invest in their careers and have them learn it instead.

A hindsight is 20/20 experience for me.