What does redis do?

What is Redis?

Redis is an open source, in-memory, structured data storage system. It is designed to meet the following needs:

Uses and Benefits:

Redis is widely used in the following scenarios:

• Caching: Store frequently accessed data to reduce database read operations and improve response speed.
• Message queue: As a message middleware, transmit messages between applications.
• Session State Storage: Stores user session information to support stateless web applications.
• Ranking system: Stores scores and ranking information, used to create rankings and scoring systems.
• Rate limiter: Limit the user's access frequency or resource consumption.

Redis provides the following advantages:

• High performance: Based on memory operations, with extremely low latency and high throughput.
• Flexible data structure: Supports multiple data types such as strings, hash tables, lists, sets, ordered sets, etc.
• Easy to use: Provides a simple and easy-to-use command interface and supports multiple programming languages.
• High availability: Can be configured in master-slave replication mode to achieve data redundancy and failover.

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