> Swift seems somewhere in between I would say Swift is easier to learn/use than Rust while aiming to deliver some of the same performance characteristics. At

> Swift seems somewhere in between I would say Swift is easier to learn/use than Rust while aiming to deliver some of the same performance characteristics. At least that's the sweet spot it's shooting for on the server. On throughput, two things: - Reference counting only applies object references. It does not apply to value types, and Swift is very strong on the "value semantics" approach to coding. It's like a sensible incorporation of some functional programming concepts without getting dogmatic about it. I'm not sure exactly how this will work out on the server but it seems very promising from a performance and thread safety standpoint. - Even when we consider throughput burdened by ARC, latency is probably more important of a metric than throughput for a whole lot of services. Throughput is sort of the knee-jerk metric which I feel is a holdover from desktop benchmarking days. For services at scale, p99 latency is where you get the real headaches. And that's one area where ARC is especially good.