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Building RESTful Web Services with Spring 5

You're reading from   Building RESTful Web Services with Spring 5 Leverage the power of Spring 5.0, Java SE 9, and Spring Boot 2.0

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788475891
Length 228 pages
Edition 2nd Edition
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Authors (2):
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Ludovic Dewailly Ludovic Dewailly
Author Profile Icon Ludovic Dewailly
Ludovic Dewailly
Raja CSP Raman Raja CSP Raman
Author Profile Icon Raja CSP Raman
Raja CSP Raman
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Table of Contents (15) Chapters Close

Preface 1. A Few Basics FREE CHAPTER 2. Building RESTful Web Services in Spring 5 with Maven 3. Flux and Mono (Reactor Support) in Spring 4. CRUD Operations in Spring REST 5. CRUD Operations in Plain REST (Without Reactive) and File Upload 6. Spring Security and JWT (JSON Web Token) 7. Testing RESTful Web Services 8. Performance 9. AOP and Logger Controls 10. Building a REST Client and Error Handling 11. Scaling 12. Microservice Basics 13. Ticket Management – Advanced CRUD 14. Other Books You May Enjoy

Cache implementation


So far, we have seen the theory part in this chapter. Let's try to implement the concept in our application. To simplify the cache implementation, we are going to use only user management. We will use the getUser (single user) REST API to apply our caching concept.

The REST resource

In the getUser method, we will pass the right userid to the path variable, assuming the client will pass the userid and get the resource. There are many caching options available to implement. Here, we will use only the If-Modified-Since caching mechanism. As this mechanism will pass the If-Modified-Since value in the header, it will be forwarded to the server, saying that, if the resource is changed after the specified time, get the resource fresh, or else return null.

There are many ways we can implement caching. As our goal is to simplify and convey the message clearly, we will keep the code simple, instead of adding complexity in the code. In order to implement this caching, we might need...

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