Certainly not knocking rust analyzer – it's great! I think the missing piece of node versus Java is Java has first class support for threading, so I guess it depends if your system is IO or CPU bound, but for CPU bound systems, Java is certainly better than node. My naive understanding of Java's Jit and nodes jit is that Java's has more optimizations for CPU bound workloads, where a lot of v8s optimizations have gone into faster parsing and initial loading because that's an important use case for the web compared to Java which is mostly optimizing for the server use case at this point.