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This article focuses on "how to achieve FeignClient client load balancing based on SpringCloudAlibaba and Nacos micro-service system", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to achieve FeignClient client load balancing based on SpringCloudAlibaba and Nacos micro-service system.

Introduction to OpenFeign

Feign is a Java to HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket. Feign's first goal was reducing the complexity of binding Denominator uniformly to HTTP APIs regardless of ReSTfulness.

Package service provider program

Package the service provider program in the microservice starter instance based on SpringCloudAlibaba and Nacos: myclouds-nacos-discovery-provider-example-3.0.0.jar.

Start 2 service provider instances

Java-jar myclouds-nacos-discovery-provider-example-3.0.0.jar-- server.port=18000java-jar myclouds-nacos-discovery-provider-example-3.0.0.jar-- server.port=18001 starts the service consumer program

Package the service provider program in the microservice starter instance based on SpringCloudAlibaba and Nacos: myclouds-nacos-discovery-consumer-example-3.0.0.jar.

Java-jar myclouds-nacos-discovery-consumer-example-3.0.0.jar-- server.port=18000 to view Nacos service status

Verify the effect of load balancing

Request the http://127.0.0.1:19000/bankcard/findCardInfo?cardNo=5301001 to view the service provider console.

Summary

The load balancing implementation of feignclient under springcloudalibaba also depends on netflix-ribbon. It is dependent on spring-cloud-starter-netflix-ribbon in spring-cloud-starter-alibaba-nacos-discovery pom.

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