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This article will explain in detail the working principle of Dubbo and the process of RPC request, the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

How dubbo works

The first layer: service layer, interface layer, for service providers and consumers to implement

The second layer: config layer, configuration layer, mainly for various configurations of dubbo

The third layer: proxy layer, service agent layer, both consumer and provider,dubbo will generate agents for you, and agents will communicate with each other on the network.

The fourth layer: registry layer, service registration layer, responsible for service registration and discovery

Layer 5: cluster layer, clustering layer, routing and load balancing encapsulating multiple service providers, combining multiple instances into a single service

The sixth layer: monitor layer, monitoring layer, monitoring the number and time of calls to the rpc interface.

Layer 7: protocal layer, remote call layer, encapsulating rpc calls

Layer 8: exchange layer, information exchange layer, encapsulated request response mode, synchronous to asynchronous

Layer 9: transport layer, network transport layer, abstract mina and netty as unified interfaces

Layer 10: serialize layer, data serialization layer

Work flow

Step 1: provider registers with the registry

Step 2: consumer subscribes to the service from the registry, which notifies consumer of the registered service

Step 3: consumer calls provider

Step 4: both consumer and provider notify the monitoring center asynchronously

Can I continue to communicate when the registry is dead?

Yes, because at the beginning of initialization, consumers will pull information such as the address of the provider to the local cache, so the registry can continue to communicate when it is hung up.

About the working principle of Dubbo and how the RPC request process is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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