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This article introduces the relevant knowledge of "what Redis is and what function it has". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

What is Redis?

Redis, which stands for REmote Dlctionary Server (remote Dictionary Server), is the hottest non-relational database at present, and the latest stable version is redis 5.0.

Interruption:

There are four main types of non-relational database No SQL, but here we only talk about two, namely key-value pair type and document type.

Key-value pair type: represented by redis. The advantages of fast query speed, disadvantages of the data structure is not unified, more messy.

Document type: the representative is MongoDB. The advantage data structure is unified, is a document, the disadvantage query speed is slow.

Redis is an open source, high-performance, key-value-based cache and stored-value system that adapts to different scenarios by providing a variety of key-value pair types. At the same time, many advanced features of redis make it suitable for different roles such as message queue and task queue.

The role of Redis

Storage structure of 1.key-value

two。 Memory storage, disk persistence

3. You can set the expiration time

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