Async, stacks and colors revisited

This is likely to go essay style, so if you are looking for a fast read, this is not it. First this: I love std.Io and it’s concurrency/async concept. It’s beautiful. It’s unfinished. I worked a bit with zio, which is great. One of my long term side projects is a reimplementation of Nats (a message broker/communication framework), same vision, but focused on performance and lean resource usage and without the spaghetti code. One of the requirements is that such a system must handle a lot of con...