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Top 23+ Redis Interview Questions and Answers

27/Oct/2021 | 12 minutes to read


Here is a List of essential Redis Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these Redis questions are explained in a simple and easiest way. These basic, advanced and latest Redis questions will help you to clear your next Job interview.

Redis Interview Questions and Answers

These interview questions are targeted for Redis database. You must know the answers of these frequently asked Redis questions to clear your next Job interview.

1. What is Redis?

Redis is a database or store that is:

  • Open-source database.
  • In-memory data structure store.
  • Used as a cache and message broker
  • Provides support for different data structures like strings, hashes, lists, sets, sorted sets with range queries.
  • Radius queries for bitmaps, hyperloglogs, geospatial indexes data structures.

2. Explain in-memory database.

3. What are the advantages and disadvantages of redis?

4. How redis manage the data in case of system crash?

5. How to achieve data persistence by AOF(Append-only files)?

6. How to achieve data persistence by Snapshotting?

7. Why Redis is used?

8. How to use Redis Pipelining to speedup the queries?

9. Explain Pipelining VS Scripting.

10. How to implement client side caching in Redis?

11. How to use Redis as LRU cache?

12. What is Partition and why it is useful?

13. What are the data types in Redis?

14. Explain Redis Lists (Linked Lists) and some operations.

15. Explain Sets and Hashes operations in Redis.

Some General Interview Questions for Redis

1. How much will you rate yourself in Redis?

When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like Redis, So It's depend on your knowledge and work experience in Redis.

2. What challenges did you face while working on Redis?

This question may be specific to your technology and completely depends on your past work experience. So you need to just explain the challenges you faced related to Redis in your Project.

3. What was your role in the last Project related to Redis?

It's based on your role and responsibilities assigned to you and what functionality you implemented using Redis in your project. This question is generally asked in every interview.

4. How much experience do you have in Redis?

Here you can tell about your overall work experience on Redis.

5. Have you done any Redis Certification or Training?

It depends on the candidate whether you have done any Redis training or certification. Certifications or training are not essential but good to have.


We have covered some frequently asked Redis Interview Questions and Answers to help you for your Interview. All these Essential Redis Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any Redis Interview if you face any difficulty to answer any question please write to us at Our IT Expert team will find the best answer and will update on the portal. In case we find any new Redis questions, we will update the same here.