Toward a Functional Programming Analogy for Microservices

Introduces a functional programming analogy for microservices, contrasting it with the synchronous, object-oriented analogy. Advocates for an event-driven architecture based on immutable logs (Kafka) and reactive dataflows (Kafka Streams). Details CQRS, Event Sourcing, and the single writer principle in this context. Categorizes microservices into 'Functional Core' and 'Imperative Shell' (materialized views and side-effect executors). Provides a banking use-case example using Kafka Streams.