Book Image

Building RESTful Web Services with Spring 5 - Second Edition

By : Raja CSP Raman, Ludovic Dewailly
Book Image

Building RESTful Web Services with Spring 5 - Second Edition

By: Raja CSP Raman, Ludovic Dewailly

Overview of this book

REST is an architectural style that tackles the challenges of building scalable web services. In today's connected world, APIs have taken a central role on the web. APIs provide the fabric through which systems interact, and REST has become synonymous with APIs.The depth, breadth, and ease of use of Spring makes it one of the most attractive frameworks in the Java ecosystem. Marrying the two technologies is therefore a very natural choice.This book takes you through the design of RESTful web services and leverages the Spring Framework to implement these services. Starting from the basics of the philosophy behind REST, you'll go through the steps of designing and implementing an enterprise-grade RESTful web service. Taking a practical approach, each chapter provides code samples that you can apply to your own circumstances.This second edition brings forth the power of the latest Spring 5.0 release, working with MVC built-in as well as the front end framework. It then goes beyond the use of Spring to explores approaches to tackle resilience, security, and scalability concerns. Improve performance of your applications with the new HTTP 2.0 standards. You'll learn techniques to deal with security in Spring and discover how to implement unit and integration test strategies.Finally, the book ends by walking you through building a Java client for your RESTful web service, along with some scaling techniques using the new Spring Reactive libraries.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Spring Security and JWT (JSON Web Token)

HTTP caching

When the client requests the same resource representation many times, it will be a waste of time to provide it from the server side and it will be time-consuming in web applications. Instead of talking to the server, if the the resource is reused it will definitely improve the web application performance.

Caching will be considered a primary option for bringing performance to our web application. Web caches avoid server contact multiple times and reduce the latency; hence, the application will be faster. Caching can be applied on different layers of an application. In this chapter, we will only talk about HTTP caching, which is considered a middle layer. We will dig more into other forms of caching in Chapter 11, Scaling.

HTTP cache control

Cache control is a header field that specifies directives for caching operations on the web. These directives give the caching authorization, define the duration of the caching, and so on. The directives define the behavior, usually intended...