[liuliu]

"Relatively few apps bottleneck on CPU" is a very 2010 opinion. With fast intranet (100Gbps+) and SSD, running business logic can become the bottleneck in many cases.

Unfortunately, I don't have readily available data to back up my claim neither.

[acdha]

I’m not saying it can’t happen, just that it’s pretty rare. SSDs are not infinite capacity and 100G networking isn’t common even in data centers - and more to the point, what really matters is latency: how many cycles can your CPU exercise in the time it takes for a round-trip network request is usually orders of magnitude greater than your business logic.

Again, not saying it never happens but I’ve rarely seen the kind of microbenchmark this story is about end up correlating with real application performance. I have seen developers get all fired up in some religious war and endanger their entire project trying to see benefits which never materialized, though, a common feature there was this focus on toy benchmarks rather than measuring the whole system or what they could do at the app level if they weren’t supporting some niche framework.