What is the function of redis?

This article mainly introduces what the role of redis is, has a certain reference value, friends who need it can refer to it. I hope you all have a lot to gain after reading this article. Let's take a look at it together.

Redis is open source free, written in C language, following the BSD protocol, is a high-performance (KEY/value) distributed memory database, memory-based operation and support for persistent NoSQL database, is currently one of the most popular NoSQL database, also known as the data structure server.

What's the use of Redis? What can be done?

Memory storage and persistence:

Redis supports asynchronous writing of data in memory to the hard disk without affecting the continuation of services, taking the latest N data operations, such as: the ID of the latest 10 comments can be placed in the list collection of Redis.

2. Simulate a function similar to HttpSession that requires setting an expiration time.

3. Publish and subscribe message system.

4. Timer and calculator.

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