Key-value Database

Lesson in the Redis Roadmap · Stage 1: What is Redis?

Last updated 14 September 2026

What is Key-value Database?

Key-value Database is a non-relational (NoSQL) database that stores data as a collection of key-value pairs. In this model, each piece of data is associated with a unique identifier (key) that is used to retrieve the corresponding value. This simple structure allows for high performance and scalability, making key-value databases ideal for certain use cases.

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Free resources to learn Key-value Database

Official docsWhat is a Key-Value Database?
VideoKey Value Store - System Design Interview Basics

Key-value Database: common questions

Can I learn Key-value Database in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Key-value Database in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Key-value Database tutorial for beginners?

It is lesson 3 of 162 in the free Redis roadmap, in stage 1, What is Redis?. If you are new to Redis, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.