If you have used Redux at any point while developing an application to manage state, you will most definitely have come across reducers. This tutorial will explain the concept of reducers and how they work specifically in Redux. In this tutorial, we’re going to learn the concept of reducers and how they work, specifically in React applications. In order to understand and better use Redux, a solid understanding of reducers is essential. Reducers provide a way to update an application’s state using an action. It is an integral part of the Redux library. This tutorial is for developers who want to learn more about Redux Reducers. An understanding of React and Redux would be beneficial. At the end of the tutorial, you should have a better understanding of the role Reducers play in Redux. We’ll be writing code demos and an application to better understand Reducers and how it affects the state in an application.