业务模块工程师 服务层与业务逻辑v1.1.0

Extract order validation and pricing logic from controllers into a dedicated service layer, ensuring that business rules like discount calculation and inventory checks are testable and reusable across API and console commands.

Isolate fund transfer business logic (e.g., fraud checks, balance updates, audit trail) into a service, keeping controllers thin and models focused on persistence, enabling unit testing of core rules.

Refactor appointment booking logic (e.g., provider availability, patient eligibility, conflict detection) out of controllers into a service, improving modularity and testability while maintaining API contracts.

Implement subscription lifecycle rules (trial period, renewal, upgrade/downgrade) in a service layer, separating orchestration from persistence and enabling easy modification without affecting controllers or models.

Extract route planning and delivery scheduling algorithms into a service, keeping the controller handling only input/output and the model persisting route data, allowing for simpler testing and reuse across different entry points.

Encapsulate domain-specific business rules (e.g., tax calculation, compliance checks) into isolated, testable services that can be reused across multiple applications or microservices.

Design the service layer as a stable API contract that external partners or internal teams consume, enabling rapid integration and monetization of core business capabilities.

Offer a platform where business logic modules (services) can be plugged in independently, allowing clients to customize orchestration without touching core infrastructure.