I'm building and maintaining Blazeio: https://github.com/anonyxbiz/Blazeio. Blazeio is designed to handle massive concurrency with low response times and high requests per second. It utilizes a perishable buffer, discarding chunks as they are received, and operates with a single task throughout the entire request/response cycle. In theory, Blazeio can scale to handle infinite concurrency. While Black Sheep crashes under heavy load, Blazeio continues to scale seamlessly and outperform it.