What does redis do?

Redis is an open source in-memory data storage system for storing and retrieving data. The main functions include: cache message queue session storage ranking limiter whose advantages are: high performance scalability flexibility open source

The role of Redis

Redis is an open source, in-memory data structure storage system for storing and retrieving data. It is known for its high performance, scalability and flexibility.

Main functions:

1. Cache:

• Redis can be used as a cache to store frequently accessed The data. It can improve application performance by reducing the number of database queries.

2. Message Queue:

• Redis acts as a message queue, allowing applications to communicate through a publish-subscribe model. It can support real-time data streaming and asynchronous communication.

3. Session storage:

• Redis can store user session data, such as shopping basket or shopping cart. It helps maintain state-sensitive applications while improving scalability.

4. Leaderboards:

• Redis can easily implement leaderboards, track scores or rankings of other indicators. It is often used in games or social media applications.

5. Limiter:

• Redis can be used as a limiter to prevent abuse or overload by limiting the number of API calls or other operations.

Advantages:

• High performance: Redis uses memory as the storage medium and has extremely fast access speed.
• Scalability: Redis can be easily scaled to multiple servers to handle higher loads.
• Flexibility: Redis supports a variety of data structures, including strings, hashes, lists, and sets.
• Open source: Redis is open source software, making it free to use and modify.

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