My advice is to use Sagas where you need A triggers B type stuff relating to a single event. For anything that could cut across a number of actions, I find it is simpler to write custom middleware and use the meta property of an FSA action to trigger it. In conclusion, our transition from Redux to React Query, coupled with the Query Key Factory library, has been enlightening and rewarding. We've seen significant benefits in adopting a more modern approach to state management.

I.e. actions are continually pushed to thunks, and thunks have no control on when to stop handling those actions. In this article, we embark on a journey to share our firsthand experience and insights. We'll illustrate the compelling reasons that drove us to transition from Redux to React Query, emphasizing the advantages it brings to the table. Through a practical example, we'll demonstrate how React Query simplifies and modernizes our state management approach. After defining the reducer logic, we can make it reusable by exporting it from the file and importing it wherever we need to manage the state. I prefer vite (and this is what the React document currently recommends), because it's faster for development and easier to configure.

Web Development Goals for 2023

Pure functions are desirable from a testing standpoint because they are predictable and repeatable, which makes them relatively easy to test. While Redux primarily focuses on managing the application's global state, React Query extends its capabilities by offering real-time data reactivity out of the box. This means that when data changes on the server, React Query can automatically update your UI without the need for additional setup. Redux often requires the integration of libraries like Redux-Saga or Redux-Thunk to achieve similar functionality. One of the challenges of building a Redux application is debugging and understanding the flow of actions in your app.

This means you can now use stateful logic within functional components. Create a React boilerplate using the create-react-app command or the Vite tool. React and frameworks like Angular.js, Vue.js, and Next.js often use state management to handle data and control how components behave. State management is crucial for handling an application's data, how users interact with it, and how different parts of the app behave. However, redux can be used with different frameworks and libraries but still it is most popular to use it along with React applications for state management.

Redux Saga:

Middleware can also help to simplify async logic, such as by using a declarative approach or by allowing you to write async code in a more familiar way. One key difference between Redux Thunk and Redux Saga is the way they handle async logic. In contrast, Redux Saga uses a declarative approach to async logic, which allows you to specify async logic as generator functions that yield effects. Both async/await syntax and Redux Thunk can be useful tools for handling async tasks in JavaScript and Redux applications.

With that in place, let’s now move to learning about what Redux middleware are and how they can further simplify the overall experience. We’ll be implementing a similar example to the login component above but this time in Redux. As we mentioned earlier, Redux is a standalone library that can be used with different JavaScript frameworks including Angular, Inferno, Vue, Preact, React, etc. This is a tradeoff between predictable state management and data flexibility. Since Redux is so predictable, it does not offer much flexibility in data handling.

How to Use Redux in Your Application:

Make informed decisions about your tools, and understand the tradeoffs involved in each decision. Explore how Superglue and Hotwire revolutionize frontend development with HTML over the wire, enhancing performance, flexibility, and ease of use. Expo Router provides an excellent file-based routing solution with crucial features such as deep linking and native support. With Redux, you can persist some of the app’s state to localStorage and restore it after a refresh. The reducer in Redux is a normal, pure function that takes care of the various possible values of state using the switch case syntax.

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. The Redux store is a central data source that acts as a single source of truth for your application’s state. The current state of your website or application resides in the store.

The Cons of Using Redux with React

But that means several things need to be taken care of — most importantly, keeping the state immutable. But, as we mentioned before, it can introduce a lot of boilerplate into your application due to the verbosity of its API. Because of this, it is recommended to use the Redux Toolkit while using Redux with React. Hence, if the initial state was 12, after the action to increment it by five gets dispatched and processed, we get the new value of the state, i.e., 17. One simple answer to this question is that you will organically realize for yourself when you need Redux. This usually happens when your app grows to a scale where managing app state becomes a hassle and you start looking for ways to make it simplify it.

Redux is strict about how code should be organized, which makes it easier for someone with knowledge of Redux to understand the structure of any Redux application. This generally makes it easier to maintain, and also helps you segregate your business logic from your component tree. For large scale apps, it’s critical to keep your app more predictable and maintainable. If the same state and action are passed to a reducer, the same result is always produced because reducers are pure functions.

For example, you might use a middleware like Redux Thunk to dispatch actions that make API calls and dispatch new actions with the data when the API call is successful. This allows you to manage the async logic of your API calls in a declarative way, rather than having to write complex and hard-to-maintain code. There are actions (usually action creators too), reducers, and the store. The amount of extra code that has to be written is intimidating to new developers.

• It  acts as a central store that holds the application's entire state.
• I've seen many unjustified claims that "thunks cannot do X" for example.
• There are several different types of middleware available for Redux, each with its own unique set of features and capabilities.
• This can be especially helpful when working on large, complex projects.

This allows you to easily track changes to the state and debug any issues that may arise. Keeping track of this data at each and every individual component can become difficult. What to what is redux used for learn can be an overwhelming question for a JavaScript developer. It helps to narrow the range of options by learning one thing at a time and focusing on problems you find in your work.

It's intended to help answer the question "When did a certain slice of state change, and where did the data come from?", with predictable behavior. It also adds some indirection to your code, and asks you to follow certain restrictions. It is easy to test Redux apps because they rely on pure functions. This means tht tests can simply call a pure function with specific parameters and check if the return value matches the expected result.