一、什麼是服務監控
1、除了隔離依賴服務的調用以外,Hystrix還提供了準實時的調用監控(Hystrix Dashboard),Hystrix會持續
地記錄所有通過Hystrix發起的請求的執行信息,並以統計報表和圖形的形式展示給用戶,包括每秒執行多少
請求多少成功,多少失敗等。
2、Netflix 通過 hystrix-metrics-event-stream 項目實現了對以上指標的監控。Spring Cloud也提供了
Hystrix Dashboard 的整合,對監控內容轉化成可視化界面。
二、代碼
1、依賴
<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>microservice-cloud-01</artifactId>
<groupId>com.haoxiansheng.springcloud</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>microservice-cloud-09-hystrix-dashboard-9001</artifactId>
<dependencies>
<dependency>
<groupId>com.haoxiansheng.springcloud</groupId>
<artifactId>microservice-cloud-02-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--導入 hystrix 與 hystrix-dashboard 依賴-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
</dependencies>
</project>
2、Main
package com.haoxiansheng.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
@EnableHystrixDashboard // 開啓
@SpringBootApplication
public class HystrixDashboard_9001 {
public static void main(String[] args) {
SpringApplication.run(HystrixDashboard_9001.class, args);
}
}
3、application.yml
server:
port: 9001
4、啓動服務
請求 http://localhost:9001/hystrix