The 40-Year-Old Editor That Predicted Microservices (And You Still Think It’s a Dinosaur)
Emacs’s core architecture — a tree of buffers and a client-server process — predates microservices by decades. Most editors are monoliths with plugin APIs; Emacs is a modular operating system for text where every feature is a service. Understanding this shifts how you build extensible systems, whether for code or anything else.