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This article mainly introduces "how to understand Java distribution and clustering". In daily operation, I believe many people have doubts about how to understand Java distribution and clustering. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to understand Java distribution and clustering"! Next, please follow the editor to study!

Cluster

A business is deployed on multiple servers, which is called a cluster. A business here can be seen directly as a package.

For instance

The company has developed an online mall, similar to T-Bao, where customers can browse goods, add shopping carts, pay, and complete the entire shopping process.

The company bought a server and deployed the program to satisfy a thousand people shopping online at the same time.

When there are more and more customers, the server load is getting higher and higher, and the pages of the mall become more and more stuck, at this time, the company buys several more servers, deploys one set of the mall programs on each server, and the load balancer forwards the request to each server. This is the cluster.

Distributed system

Split a business into multiple services, and then deploy to different servers, this is distributed.

Give me another example.

The company's online mall is divided into two systems: the commodity system and the payment system. Users browse goods and join the shopping cart on the commodity system. The payment action is completed on the payment system (of course, the user is not aware of the operation completed on the two systems), which is distributed.

Of course, it can continue to be dismantled, such as: user system, points system, logistics system and so on.

The benefits of distribution

The leader said, we do a second-hand trading platform, similar to X Fish, at this time the user system, payment system can be reused, to achieve service reuse.

Distributed + cluster

Distribution and clustering are usually used together.

For example, two commodity systems are deployed, two payment systems are deployed, and load balancers are hung in front of them, so that even if a single server Down is dropped, it will not affect the entire business process.

There is another solution that does not depend on load balancer, that is, service registration / discovery:

At this point, the study on "how to understand Java distribution and clustering" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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