The Common RecommendationMost blog posts and online resources recommend extracting Feign call-related DTOs and clients into a single shared module. This approach appears more convenient for usage and enables easy code reuse across projects.However, this common practice fundamentally misunderstands Feign's architectural role.The Core Problem: Feign's True NatureFeign is fundamentally the caller's infrastructure component, not the service provider's API definition carrier.This distinction is critical for understanding proper architectural boun...