Java is also faster than Rust. I saw @axeng200's post and was curious about Java numbers. I asked Claude to do the migration, and even though the first version was faster, it was very far from idiomatic Java. I tried to close the gap, but some compromise had to be reached in order to make this work as a drop-in replacement. Also, some typical Java approaches were just slower. Probably both the Rust and Java implementations could probably do better in terms of performance and being closer to how idiomatic code is written by everyday developers Stack is Java + quarkus. Beside just Java migration I tested some new feature like AOT with training introduced in Java 28 (EA build). My main conclusion is - it's hard to beat a language that will adjust code to how your app is used. It's more about the JVM than Java. Repo: github.com/kgonia/once-campf…