orderscommon

Orderscommon is a term used in software development to describe a shared library or module that centralizes order-related domain models, utilities, and services used across multiple components or microservices within an organization. It is not a standardized product; implementations vary by language and framework. The goal is to promote consistency and reduce duplication in how orders are created, validated, persisted, and processed across the system.

Common contents include data models for orders and order lines; value objects such as money and addresses; enumerations for order and payment statuses; validation logic for orders and payments; event definitions like OrderPlaced, OrderCancelled, and OrderShipped; API contracts and DTOs used to communicate with other services; helper utilities for id generation, auditing, and error handling; and sometimes domain services or mappers. The module may also provide cross-cutting concerns such as auditing, tracing, and basic persistence abstractions.

Usage and governance typically involve including orderscommon as a dependency in multiple services, whether in a monorepo or in a distributed system. It is versioned and evolved to maintain backward compatibility, with changes coordinated to minimize breaking updates across dependents. Tests, fixtures, and mocks often accompany the library to support service isolation in CI pipelines.

Design considerations include keeping the module cohesive and free of application-specific concerns, documenting domain rules, and managing versioning and schema changes to avoid breaking clients. Potential drawbacks include tight coupling and overly large shared codebases. Orderscommon is related to the shared kernel concept in domain-driven design and to other common libraries in microservice architectures, offering consistency at the cost of potential coupling.