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2025-09-25 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
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1. Concept: Eureka-Cloud Service Discovery, a REST-based service for locating services to enable cloud middle-tier service discovery and failover.
2. Build: a. First of all, let's talk about building a stand-alone machine. Create a new maven project, and import the coordinates of eureka in pom:
Org.springframework.boot
Spring-boot-starter-parent
1.4.0.RELEASE
Org.springframework.cloud
Spring-cloud-starter-eureka-server
B. Create a new class EurekaApplication
@ SpringBootApplication
@ EnableEurekaServer
Public class EurekaApplication {
Public static void main (String [] args) {
SpringApplication.run (EurekaApplication.class, args)
}
}
Among them, @ EnableEurekaServer starts a service registry to provide dialogue to other applications.
C, configuration items of application.properties
# default port server.port=8761
Eureka.client.register-with-eureka=false
Eureka.client.fetch-registry=false
Eureka.client.serviceUrl.defaultZone= http://localhost:${server.port}/eureka/
D. Start springboot and visit http://localhost:8761/
3. The above is only a stand-alone environment, and the commercial environment is often a highly available (HA) environment. At this time, we have to consider the cluster. One node is dead, and there is another node. We just need to change the configuration file for the cluster.
Eureka.client.serviceUrl.defaultZone= http://localhost:8762/eureka/;http://localhost:8763/eureka/; if the ip is different and three nodes are configured, three machines are required
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