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This article mainly explains "the implementation of load balancing". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought and go deep into it slowly. Let's study and learn how to achieve load balancing.

The client sends multiple requests to the server, and the server processes the requests, and some of them may interact with the database. After the server has finished processing, the server returns the results to the client.

This architecture model is suitable for early systems with relatively few concurrent requests and low cost. However, with the continuous growth of the amount of information, the rapid growth of access and data, and the increase of the complexity of the system business, this architecture will cause the request of the corresponding client of the server to become slower and slower, especially when the concurrency is very large. it is also easy to cause the server to crash directly. This is obviously due to a bottleneck in server performance, so how do you solve this situation?

The first thing that comes to mind may be to upgrade the configuration of the server, such as increasing the frequency of CPU execution, increasing memory and so on to improve the physical performance of the machine to solve this problem, but we know that with the increasing invalidation of Moore's Law, the performance improvement of hardware can no longer meet the increasing demand. The most obvious example is that on the day of Tmall's Singles Day, the instantaneous traffic of a hot-selling product is extremely large, so similar to the above system architecture, adding machines to the existing top physical configuration is not enough to meet the demand. So what should I do?

In the above analysis, we have removed the method of increasing the physical configuration of the server to solve the problem, that is to say, the vertical solution to the problem does not work, so what about increasing the number of servers horizontally? At this time, the concept of clustering came into being, and a single server can never be solved, so we increase the number of servers, and then distribute the requests to each server, and instead of concentrating the requests on a single server, we distribute the requests to multiple servers and distribute the load to different servers, which is what we call load balancing.

Thank you for your reading. the above is the content of "the implementation method of load balancing". After the study of this article, I believe you have a deeper understanding of the implementation method of load balancing. the specific use situation still needs to be verified by practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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