API Design Patterns

API Orchestration you own this product

This project is part of the liveProject series Create APIs Using API Design Patterns
web services basics • familiarity with RESTful and REST services • basics of microservices concepts and applications • basics of APIs and interfaces, payloads, JSON and XML • Java programming skills
skills learned
design and implement an API to facilitate independent and asynchronous operations, adhering to the singleton sub-resource pattern • implement the cross-reference pattern for one API and decouple it from another API • design and implement the association resources pattern to maintain relationships
Harihara Subramanian
1 week · 8-10 hours per week · INTERMEDIATE
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liveProject This project is part of the liveProject series Create APIs Using API Design Patterns liveProjects give you the opportunity to learn new skills by completing real-world challenges in your local development environment. Solve practical problems, write working code, and analyze real data—with liveProject, you learn by doing. These self-paced projects also come with full liveBook access to select books for 90 days plus permanent access to other select Manning products. $19.49 $29.99 you save $10 (35%)
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Greengrocer, a chain of mid-sized supermarkets, has been revamping its software to keep up with market demand. As a software developer on the IT team, your task is to enhance the newly built supplier API by implementing business logic using three API design patterns: the singleton sub-resource pattern to facilitate independent and asynchronous operations, the cross-reference pattern to decouple the supplier location API from the supplier API, and the association resources pattern to maintain relationships with various resources.

This project is designed for learning purposes and is not a complete, production-ready application or solution.

book resources

When you start your liveProject, you get full access to the following books for 90 days.

project author

Harihara Subramanian J

With a proven track record in software development, software architecture principles, and implementations, Hari Subramanian has been working with software development and various software architecture concepts since 1999. He’s designed and developed over 20 microservice applications adhering to API design principles and API design patterns and has an affinity for patterns and anti-patterns.

Cloud native computing, cloud architecture, legacy product transformations, cloud migration strategies, and cloud design patterns are his current areas of focus. He’s also an active contributor to various forums on different technologies and has co-authored the books Architecture Patterns and Hands-on RESTful API Design Patterns and Best Practices.


This liveProject is for learners who want to gain practical experience with RESTful APIs, microservices, design principles, and API design patterns. To begin these liveProjects you’ll need to be familiar with the following:

  • Any Java IDE
  • JDK 8 or higher
  • API Design-First
  • Open API Spec
  • SLA and Payloads
  • JSON
  • XML

you will learn

In this liveProject, you’ll learn to implement business logic with API design (singleton sub-resources, cross-reference, and association resources) patterns, applying a design-first approach and OpenAPI specifications and definitions.

  • Design and implement a supplier API to facilitate independent and asynchronous operations, adhering to the singleton sub-resource pattern
  • Implement the cross-reference pattern for a supplier location API and decouple it from the supplier API
  • Design and implement supplier promotions and promotion group APIs to maintain one-to-many and many-to-many relationships with various resources using the association resources pattern as a guide


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book resources
Get full access to select books for 90 days. Permanent access to excerpts from Manning products are also included, as well as references to other resources.