What does redis database do?

Redis is an in-memory data structure storage system, mainly used for: caching data, improving data access speed; messaging, building chat applications and streaming data pipelines; session management, simplifying session management and improving users Experience; rankings and statistics, easily track user scores and statistics; scenarios such as current limiting, distributed locks and queue management.

The role of Redis database

Redis is an in-memory data structure storage system, which is mainly used for the following Purpose:

Cache data

Redis is most commonly used as a caching system. It can store frequently accessed data in memory, thereby significantly increasing the speed of access to this data. This is critical to reduce database load and improve application performance.

Messaging

Redis can also be used as a messaging system. It provides a feature called Pub/Sub that allows applications to send and receive real-time messages. This is useful for building chat applications, notification systems, and streaming data pipelines.

Session Management

Redis can be used to store and manage user session information. It stores user credentials, preferences, and presence information to simplify session management and improve user experience.

Rankings and statistics

Redis provides atomic operations and automatic expiration functions, which is very suitable for storing rankings and real-time statistics. It makes it easy to track user scores, leaderboard positions, and aggregate data.

Other uses

In addition to these main uses, Redis can also be used in the following scenarios:

• Current limiting
• Distributed lock
• Queue management

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