Book Image

Modern API Development with Spring and Spring Boot

By : Sourabh Sharma
Book Image

Modern API Development with Spring and Spring Boot

By: Sourabh Sharma

Overview of this book

The philosophy of API development has evolved over the years to serve the modern needs of enterprise architecture, and developers need to know how to adapt to these modern API design principles. Apps are now developed with APIs that enable ease of integration for the cloud environment and distributed systems. With this Spring book, you'll discover various kinds of production-ready API implementation using REST APIs and explore async using the reactive paradigm, gRPC, and GraphQL. You'll learn how to design evolving REST-based APIs supported by HATEOAS and ETAGs and develop reactive, async, non-blocking APIs. After that, you'll see how to secure REST APIs using Spring Security and find out how the APIs that you develop are consumed by the app's UI. The book then takes you through the process of testing, deploying, logging, and monitoring your APIs. You'll also explore API development using gRPC and GraphQL and design modern scalable architecture with microservices. The book helps you gain practical knowledge of modern API implementation using a sample e-commerce app. By the end of this Spring book, you'll be able to develop, test, and deploy highly scalable, maintainable, and developer-friendly APIs to help your customers to transform their business.
Table of Contents (21 chapters)
1
Section 1: RESTful Web Services
7
Section 2: Security, UI, Testing, and Deployment
12
Section 3: gRPC, Logging, and Monitoring
16
Section 4: GraphQL

Understanding the gRPC server and gRPC stub

If you closely observe Figure 10.1, you'll find that the gRPC server and gRPC stub are core parts of the implementation because gRPC is based on client-server architecture. Once you define the service, you can generate both service interfaces and the stub using the Protobuf compiler, protoc, with the gRPC Java plugin. You'll find a practical example in the next chapter, Chapter 11, gRPC-based API Development and Testing.

The following types of files are generated by the compiler:

  • Models: It generates all the messages (that is, models) defined in the service definition file that contains the Protobuf code to serialize, deserialize, and fetch the types of request and response messages.
  • gRPC Java files: It contains the service base interface and stubs. The base interface is implemented and then used as a part of the gRPC server. Stubs are used by the clients for communication with the server.

First, you need...