imedicalxc-doctor-blh

The four-layer architecture for medical applications consists of Controller, BLH, Service, and Mapper layers. This structure organizes code by separating request handling, business logic, service operations, and data access to maintain clear boundaries.

Nacos handles versioning and routing by dynamically loading different business logic handler versions based on environment and configuration. This mechanism allows seamless switching between common, regional, and project-specific logic without redeploying the application.

Use CommonBLH for standard logic, RegionBLH for regional variations, and ProjectBLH for project-specific features in medical software. This separation is needed when deploying a patient management system across different hospitals with localized requirements.

The best way to manage regional and project-specific variations is by categorizing business logic handlers into distinct types. Combining structured package organization with Nacos-based dynamic versioning ensures the correct logic loads per environment.

Yes, the BLH standardization approach works without external dependencies, though utilizing Nacos is required for dynamic versioning and routing features. The core architecture and naming conventions can be applied independently to structure medical application code.