alt Hacker NewsThe gains in lower memory footprint and lower demands on memory bandwidth from rewriting stuff to Rust are very real, and they're going to matter a lot with DRAM prices being up 5x or more. It doesn't surprise me at all that they would be getting these results.
I guess I am a sucker for stories about redesigning data structures, and I'd have liked more detail on that front. Also, they talked about Rust's greater memory safety; it would have been nice to know whether there were specific language features that played into the cache difference or whether it just made the authors comfortable using a systems language in this application and that made the difference.