Top Redux Interview Questions for your Next Interview

Redux is a popular open-source JavaScript library used primarily for creating user interfaces and managing application states. Redux interview questions are commonly asked at front-end and Java developer interviews, as these roles typically involve building front-end applications and user interfaces. Redux is commonly used along with other popular JavaScript libraries such as React and Angular.

To help you prepare for your upcoming tech interview, we’ve compiled this list of popular redux interview questions. We’ve covered redux interview questions for both freshers and experienced professionals.

If you are preparing for a tech interview, check out our technical interview checklist, interview questions page, and salary negotiation e-book to get interview-ready!

Having trained over 11,000 software engineers, we know what it takes to crack the most challenging tech interviews. Our alums consistently land offers from FAANG+ companies. The highest ever offer received by an IK alum is a whopping $1.267 Million!

At IK, you get the unique opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies.

Want to nail your next tech interview? Sign up for our FREE Webinar

Let’s go ahead and look at some common Redux interview questions and answers. Redux is widely used with the React library, and it is also commonly referred to as React-Redux.

Here’s what we’ll cover in this article:

• Common Redux Interview Questions and Answers
• Redux Interview Questions for Freshers
• Redux Interview Questions for Experienced Professionals
• FAQs on Redux Interview Questions

Common Redux Interview Questions and Answers

Knowing what type of questions to expect at your Redux interview is key to setting yourself apart from the competition. Let’s look at some common React Redux interview questions and answers in technical interviews.

Q1. What are some prominent advantages of using Redux?

This is one of the most common Redux interview questions asked at tech interviews. Some notable advantages of using Redux include:

• It’s easy to track and maintain application states using Redux
• Redux makes it easy to test and debug code
• Component states can be easily transferred using Redux
• Redux helps to improve the overall performance of applications
• Redux is highly effective in building front-end applications and user interfaces

Q2. What do you understand by Reducers in Redux? What is the syntax?

Reducers in Redux are essentially pure functions that record the previous action and application state and return the next state.

The syntax is: (previous_state, action) => new_state

Q3. What is Flux?

This is one of the most common Redux interview questions asked at technical interviews. Flux is fundamentally an application architecture used to build client-side applications. While Redux includes only one store per application, Flux has multiple stores per application.

Q4. What is the use of the mapStateToProps() method?

The mapStateToProps() method is used to render stored data to components. The method connects the Redux state to the React component’s props.

Q5. Can Redux be used with other JavaScript frameworks other than React?

Yes. Although REdux is popularly used with React, it can also be used with other JavaScript framework libraries such as Angular, Meteor, and Vue.

Redux Interview Questions for Freshers

As a fresher, your knowledge of popular JavaScript tools and libraries is evaluated at technical interviews, primarily front-end, backend, and Java developer interviews. In this section, we’ll look at some popular React Redux interview questions asked for freshers.

1. What do you understand about Constants in Redux?
2. What are some core features of Redux?
3. What do you understand by Actions in the Redux architecture?
4. Mention the key differences between Redux and Flux
5. What are some core features of Redux DevTools?
6. What is a store in Redux?
7. How do you add multiple middlewares in Redux?
8. How would you access a React store that’s outside a redux component?
9. How would you go about structuring directories in Redux?
10. What do you understand about the Redux Thunk Middleware?

Redux Interview Questions for Experienced Professionals

Experienced developers are often expected to know the functioning and working of popular JavaScript tools. If you’re an experienced front-end developer, you can be asked a few React Redux interview questions at your interview.

We've compiled this list of the most common interview questions to help you get an idea about the type of Redux interview questions asked for experienced professionals.

1. Explain the common Store methods in Redux
2. Explain the process of depicting a Redux store through code
3. What are the core differences between Redux and Relay
4. What are some features associated with Redux forms
5. What is the Redux Saga?
6. How would you use Connect from React Redux?
7. Explain the workflow features in Redux
8. What does the typical data flow look like for a Redux application?
9. How would you go about structuring directories in Redux?
10. What do you understand about the Redux Thunk Middleware?

If you’re a Java front-end developer, practicing these Redux interview questions will stand you in good stead for your next technical interview.

FAQs on Redux Interview Questions

Q1. What are some common libraries that complement Redux?

Redux is commonly used with other JavaScript libraries, including Angular and React. It is used along with libraries specifically built for front-end applications and user interfaces.

Q2.  What are some advantages of using Redux?

Some advantages of using Redux are - i) It helps to write applications that can run in different environments, ii) it can be used with any UI layer, iii) it can be used along with other popular libraries, iv) it enables centralization of the application’s logic and state v) it makes it easy to debug code.

Q3. What type of interviews normally feature Redux interview questions?

Redux interview questions are typically asked at Java developer, UI/UX designer, and front-end developer interviews.

Q4. What is Redux primarily used for?

Redux is an open-source JavaScript library primarily used to develop front-end applications and user interfaces.

Q5. What type of Redux interview questions should you practice for tech interviews?

To comfortably answer Redux interview questions at your next technical interview, you should cover concepts such as Flux, Components, Libraries, Middlewares, DevTools, Directories, and workflow features.

Gear Up for Your Next Technical Interview

Are you getting ready for your upcoming technical interview? Register for our technical interview webinar to learn about how to crack interviews at the biggest tech companies.

At Interview Kickstart, we’ve trained thousands of engineers to land lucrative offers at the biggest tech companies. Our instructors, who are FAANG hiring managers, know what it takes to nail tough tech interviews at top technology companies. We offer 17 different technical interview courses covering the highest-paying and most in-demand fields in tech.

Register for our FREE webinar to learn more.

‍