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This article mainly introduces what Redis application scenarios, have a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

What are the application scenarios of Redis?

Caching: this should be the main function of Redis, and it is also a necessary mechanism for large websites. Reasonable use of caching can not only speed up data access, but also effectively reduce the pressure on back-end data sources.

Shared Session: for some services that rely on session functionality, if you need to change from a stand-alone machine to a cluster, you can choose redis to manage session in a unified way.

Message queuing system: message queuing system can be said to be a necessary basic component of a large website, because it has the characteristics of business decoupling, non-real-time service peaking and so on. Redis provides publish and subscribe function and blocking queue function, although it is not strong enough compared with professional message queue, but it can basically satisfy the general message queue function. For example, in a distributed crawler system, redis is used to uniformly manage url queues.

Distributed locks: in distributed services. You can use Redis's setnx capabilities to write distributed locks, although this may not be very common.

Of course, functions such as rankings and likes can be achieved using Redis, but Redis can not do everything. For example, when the amount of data is very large, it is not suitable for Redis. We know that Redis is based on memory, although memory is very cheap, but if you have a large amount of data every day, such as hundreds of millions of user behavior log data, it is quite expensive to store it with Redis.

Thank you for reading this article carefully. I hope the article "what are the Application scenarios of Redis" shared by the editor will be helpful to you? at the same time, I also hope that you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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