For example, event-based routing behaves differently from a “regular” website since we conditionally generate new pages. As the SPA increases in features or pages, so does its need for state management. When we know what event will happen next if we click a button or link, we take away all assumptions about events triggering other events. Redux and Redux patterns are not to be confused with Flux patterns or Flux architecture.
- Not only this, but if required, this file will also suggest the pattern for the action types.
- If you feel middleware is required, you will enjoy it because it gives you a lot of power to do tons of great work with the best abstraction.
- When you are dispatching an action, it passes through the Reducer (cashier).
- This is why you need a state management tool like Redux that makes it easier to maintain these states.
There is a central store that holds the entire state of the application. Each component can access the stored state without having to send down props from one component to another. Now imagine what happens when a state has to be shared between components that are far apart in the component tree. The state has to be passed from one component to another until it gets to where it is needed. State management is essentially a way to facilitate communication and sharing of data across components.
Step 7: Running the App
Redux is a popular library many projects and companies use to manage state and side effects, with a big community and great documentation. It’s certainly worth trying out in a future project if you are new to it. You can think of dispatching actions as “triggering an event” in the application.
Since it has a unidirectional system, it can avoid direct state mutations instead of relying on reducing to create copies of the data to store. This what is redux for feature ensures that users can track all the changes and actions safely. At the same time, it’s easy to roll back an unwanted change with it.
Step 3: Creating the Redux Store
It may not be very exciting, but it shows all the important pieces of a React+Redux application in action. Whenever we dispatch an action with a certain type, we need to make sure to have appropriate reducers to handle that action. The state of the whole application is stored in the form of a JS object tree in a single store as shown below. The Redux store is the main, central bucket which stores all the states of an application. It should be considered and maintained as a single source of truth for the state of the application. In the following section, we will dive deep into the core concepts of Redux – the store, actions and reducers.