Reactive Programming Spring Boot, Spring Boot Reactive, Reactive REST API, How to develop a Reactive Programming in Spring Boot?, Reactive Stack vs Servlet Stack, Spring Reactive Client with WebClient etc. In this article, we will discuss about ''How to develop a CRUD REST API using Reactive Programming Spring Boot?''. In other words, we will be talking about a new way of working in REST APIs which is Reactive Programming. No doubt, if we talk about the performance, this way is faster than the traditional way of developing REST. Moreover, Reactive Programming offers us to utilize application resources optimally. We will also discuss how to work with the concept of Spring WebFlux as the part of Reactive Programming and the related concepts