Progress report of "Ruby 3 Concurrency" Cookpad Inc. Koichi Sasada <ko1@cookpad.com> Ruby X Elixir Conf Taiwan 2018 (2018/04/28) Today’s topic • Difficulty of Thread programming • New concurrent abstraction for Ruby 3 named Guild – To overcome threading difficulties • Introduce current Guild development progress – Current “Semantics” – Current API design and sample code we can run – Preliminary pe