SpringCloud--Eureka cluster

SpringCloud--Eureka botrus

2024-07-12

Eureka adnotatione centrum botrum portassent

quare botrus?

Si una tantum adscriptionis centrum ministrantis est, unum punctum defectionis erit et cum concursu magno discursum esse non potest, botrus requiritur.

Quam botri

Praeparate tres ministros Eurekae ut subcriptio inter se, quod significat unumquemque Eurekae Servo subcriptio cum omnibus Servis Eureakis, inter se. Nostra alia microservices (ordine, usuario) tantum opus est ut inscriptionem adnotationem electronicam omnibus Eurekae servientibus monstrare debeas.

Codicis:

Qui hic usus est modulus Eureka, qui plures imaginum yml conformat ad effectum pampinei efficiendum.

Satus classis


package org.example;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
 
/**
 * @ClassName EurekaStart
 * @Author 23
 * @Date 2024/7/10 19:12
 * @Version 1.0
 * @Description TODO
 **/
@SpringBootApplication
@EnableEurekaServer
public class EurekaStart {
    public static void main(String[] args) {
        SpringApplication.run(EurekaStart.class,args);
    }
}

yml


spring:
  profiles:
    active: peer3
---
spring:
  profiles: peer1
  application:
    name: Eureka1
eureka:
  instance:
    hostname: localhost
  client:
    serviceUrl:
      defaultZone: http://localhost:10070/eureka/
server:
  port: 10070
---
spring:
  profiles: peer2
  application:
    name: Eureka2
eureka:
  instance:
    hostname: localhost
  client:
    serviceUrl:
      defaultZone: http://localhost:10071/eureka/
server:
  port: 10071
---
spring:
  profiles: peer3
  application:
    name: Eureka3
eureka:
  instance:
    hostname: localhost
  client:
    serviceUrl:
      defaultZone: http://localhost:10072/eureka/
server:
  port: 10072

pom.xml


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.example</groupId>
        <artifactId>Springcloud-Netflix</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
 
    <artifactId>Eureka-Service</artifactId>
    <packaging>jar</packaging>
 
    <name>Eureka-Service</name>
    <url>http://maven.apache.org</url>
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
 
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <!-- Eureka服务端支持 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
    </dependencies>
</project>

Servitium onus conpensationem

Quid necesse est onus conpensationem

Ut concurrentia provideat, interdum idem provisor servitii multiplices explicari potest (officia commoditatis). Hic cliens debet implere onus vocationi secundum quoddam responsalem conpensationem consilii cum vocationis.

Servitium provisor configuratione


spring:
  profiles:
    active: order2
---
server:
  port: 10010
spring:
  profiles: order1
  application:
    name: order-service
eureka:
  client:
    service-url:
      defaultZone:  http://localhost:10072/eureka
  instance:
    prefer-ip-address: true
---
server:
  port: 10012
spring:
  profiles: order2
  application:
    name: order-service
eureka:
  client:
    service-url:
      defaultZone: http://localhost:10072/eureka
  instance:
    prefer-ip-address: true

Communi onere conpensationis technologiae

Ribbon

Per RestTmplate, vocatus officium perficiendum cum URL

Codicis exsecutionem (servitium dolor lateris);


package org.example.Controller;
 
import org.example.domain.Order;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
 
import java.util.Arrays;
import java.util.List;
 
/**
 * @ClassName UserController
 * @Author 23
 * @Date 2024/7/10 18:52
 * @Version 1.0
 * @Description TODO
 **/
@RestController
@RequestMapping("/User")
public class UserControllerrlb {
    @Autowired
    private RestTemplate restTemplate;
//    @Autowired
//    private DiscoveryClient discoveryClient;
    @GetMapping("/getOrder/{id}")
    public List<Order> getOrderById(@PathVariable("id") Integer id) {
//        Order[] order = restTemplate.getForObject("http://localhost:10010/OrderService/user/" + id, Order[].class);
//        return Arrays.asList(order);
//        List<ServiceInstance> instances=discoveryClient.getInstances("order-service");//通过服务的名字去获取服务实例
//        ServiceInstance serviceInstance=instances.get(0);//定死只获取第一个服务实例对象
//        String ip=serviceInstance.getHost();//获取服务对象ip
//        int port=serviceInstance.getPort();//获取获取的实例对象的服务端口号
        Order[] orders=restTemplate.getForObject("http://Order-Service/OrderService/user/"+id,Order[].class);
        return Arrays.asList(orders);
 
    }
}

Ribbon onus conpensationem vocationis

Ribbon fons apertus est project nubis mediae tabulae ministerium a Netflix dimissum. Pars clientis Ribbon praebet seriem configurationis completae rerum, ut nexum timeout, retry, etc. Simpliciter pone, Ribbon clientis onus librarius est. Omnes machinas post libratorem in fasciculi configurationis enumerare possumus, et Ribbon sponte adiuvabit ut in certis regulis coniungas (ut simplex saeptum, nexus temere, etc.) Pro his. machinis, Ribbon ad usum deducendi faciliter valemus, onera algorithmarum conparatione. Ribbon est clientis onus librarius qui potest onus implere conpensationem vocat ad multiplices instantias muneris servitii secundum certas regulas.

Schematica:

OpenFeign pondera librationis

OpenFeign est clientelam declarativam Web Service cuius propositum est ut facilius Web Service vocat. Finge exempla interface ad petitiones HTTP (inscriptio accessus in ea notata). scribens interfaciem simplicem et annotationes inserens, parametros, formas, inscriptiones et alia informationes HTTP postulationis definire potes. OpenFeign petitiones HTTP omnino procuratorem (proxy dynamicam) appellare oportet. Tantum opus est ut methodus ad petitionem muneris complendam et processum pertinentium. Simula Ribbon et Hystricem (de Hystrice postea loquemur), ut his duobus explicite uti non amplius indigeamus.

Librans belli onus

IRule

Configurando diversas IRule subclasses, eligere potes diversa onera conpensationis consilia, hoc est, servitium eligere e album servitio cum speciali consilio ad vocationem perficiendam. Etiam sit amet cursus velit. Ergo strategia pondera pondera in aedificationes et consuetudines dividi possunt.

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