The main advantage of Redis is its ability to process data in real time with minimal latency. Thanks to these features, Redis has become an essential solution in modern application development where high performance is required.

Let's look at some use cases where Redis is especially useful, along with examples of its application.

Data Caching

Redis is commonly used for temporarily storing data that an application accesses most often. This helps avoid slower sources, like databases, and improves performance.

This image demonstrates the advantage of using Redis as a caching layer. By storing frequently accessed data in memory, Redis reduces the need to query the main database, which can be slower. This leads to faster responses for users and less load on the database.

Example

On a news website, headlines and article previews are stored in Redis for quick loading on the homepage, reducing the load on the primary database.

Counters and Data Tracking

Redis allows for the creation of fast counters to track the number of events or users. It can be used to track page views or user activities in real time.

Example

A news website uses Redis to count article views. Each time an article is opened, the counter associated with it increases.

Real-Time Applications

With its minimal latency, Redis is used in real-time applications, such as chat systems, notifications, or analytics.

Example

A chat application uses Redis to store and update information about which users are online, utilizing Redis data structures (which we will cover later).