alibaba-springcloud-sentinel探索

前言

• 仅做集成参考
• 项目为maven项目
• 版本如下:

组件	版本
springcloud	Hoxton.SR8
springboot	2.3.2.RELEASE
springcloud-alibaba	2.2.4.RELEASE
alibaba-sentinel-dashborad	1.8.0
jdk	1.8+

阿里巴巴版本说明

整合

step1: sentinel-client

配置如下

父pom,无则加入入pom.xml中 去除

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>

        <spring-boot.version>2.3.2.RELEASE</spring-boot.version>
        <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
        <spring-cloud-alibaba.version>2.2.4.RELEASE</spring-cloud-alibaba.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- spring boot 依赖 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            
            <!-- spring cloud 依赖 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- spring cloud alibaba 依赖 -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <version>${spring-boot.version}</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

pom.xml

    <dependencies>
    
         <!-- spring cloud alibaba sentinel 依赖 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>

		<!-- spring boot web 依赖-->
        <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>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
         <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

application.yaml

server:
	port: 8080
spring:
	application:
		name: sentinel   # 必须命名
    cloud:
    	sentinel:
    		transport:
    			dashboard: localhost:9001 # sentinel服务端地址

官方springcloud配置参考

HelloController.java

@RestController
public class HelloController {
    
    

    @GetMapping("/hello")
    @SentinelResource(value = "helloworld") //指定使用流控资源名称
    public String hello(){
    
    
        return "hello";
    }
}    

启动spring http://localhost:8080/hello

step2: sentinel- dashboard

docker部署

docker run --name sentinel-standalone -p 9001:8858 bladex/sentinel-dashboard

http://localhost:9001 账号 sentinel 密码 sentinel

验证

无配置情况:

配置限流:

配置限流后疯狂刷新 http://localhost:8080/hello