...The code emphasizes practical integration with common infrastructure like Nacos/Eureka for registry, Nacos/Config Server for configuration, Sentinel/Resilience4j for resilience, and gateways for routing and cross-cutting concerns. Each module typically includes minimal bootstrapping, clear dependencies, and example endpoints, making it easy to start, test, and reason about the behavior. The repo is structured as a progressive learning path that mirrors how real teams evolve from a monolith toward a service mesh of independently deployable services.