Right, polyglot architectures have no choice, but this text talks about “5 person startups” as well. Surely they can keep the set of languages limited? Plus, i

Right, polyglot architectures have no choice, but this text talks about “5 person startups” as well. Surely they can keep the set of languages limited? Plus, it’s not either/or situation. A fat clients for Go + Node.js; and a proxy for all others. This way your core logic can enjoy increased introspection / more speed / higher reliability; while special purpose services get a proxy which allow interoperability.