API Design Patterns

Product Supplier API 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
master a resource layout and various types of resource relationships • define resources and their interactions • add CRUD functionalities to an API • design and implement updates and retrieval without impacting all the resources • generate helpful API documentation
Harihara Subramanian
1 week · 6-8 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’s monolithic web app is suffering growing pains. As a software developer for this chain of mid-sized supermarkets, your task is to design a supplier API to help define various resources, resource types, and resource relationships. Using an API design-first approach, you’ll design the microservice API’s resource layout, establish data type definitions for the API in YAML, then add CRUD (create, read, update and delete) as well as partial read and update functionalities for price details.

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
  • Supply chain
  • SLA and Payloads
  • JSON
  • XML

you will learn

In this liveProject, you’ll learn to design a microservices API using fundamental design patterns that help define various resources, resource types, and relationships.

  • Master a resource layout and various types of resource relationships, such as one-to-one, many-to-many, and references
  • Choose resources and define how they interact with each other
  • Design a supplier API with proper usage of CRUD functionalities
  • Design and implement necessary independent updates and retrieval of parts of resources without impacting all the resources
  • Design a product supplier API by following a design-first approach and using OpenAPI Spec
  • Generate comprehensive API documentation that can be shared with the API developers and clients, ensuring a good developer experience


You choose the schedule and decide how much time to invest as you build your project.
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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.