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Sends 3 messages

This service sends messages to downstream consumers

Receives 14 messages

This service receives messages from other services

Overview

The Ordering Service is a core bounded context in the BookWorm ecosystem responsible for managing the complete order lifecycle. Implemented using Domain-Driven Design principles, this service encapsulates all business logic related to order processing, from creation to fulfillment or cancellation.

Domain Model

The service is structured around the Order aggregate root, which enforces invariants and business rules across the entire ordering process. Key components include:

• Order Aggregate: Central entity that maintains order consistency and contains:

  • Order Items (entities)
  • Order Status (enumeration value object)

• Buyer Aggregate: Represents customer information with:

  • Personal Details (entity)
  • Default Address (value object)

Patterns & Implementation

• CQRS Pattern: Separates command and query responsibilities
• Repository Pattern: Provides persistence abstraction for aggregates
• Specification Pattern: Encapsulates business rules for order validation
• State Pattern: Manages transitions between order statuses

External Dependencies

The Ordering Service interacts with:

• Basket Service: Consumes basket data for order creation
• Catalog Service: Validates product availability
• Notification Service: Triggers customer notifications on status changes

Core Features

Feature	Description
Create Order	Allows customers to create new orders with multiple items
Update Order	Supports order status updates, including completion or cancellation
View Order	Provides detailed order information, including status and items
Manage Buyer	Enables customer profile management, including address and personal details
Delete Buyer	Allows customers to remove their account and associated orders
View Buyer Profile	Displays customer information and order history

Architecture diagram

Infrastructure

The Ordering Service is deployed as a set of microservices within the BookWorm ecosystem. It leverages cloud-native technologies and follows best practices for scalability, reliability, and performance.