An essential requirement for writing programs that scale, is to have constructs to model concurrency in an understandable, safe, and efficient manner. This talk presents an overview of various such models available in Scala, and their impact on program structure and complexity. It then explores a way to model concurrency with less complexity with an implementation of Communicating Sequential Processes (CSP), heavily inspired by Goroutines, scala-async and Clojure's core.async.
