Sentinel系列(2)-Spring Cloud集成Sentinel及简单流控示例

逃离我推掉我的手 2023-10-10 11:41 27阅读 0赞

### 集成 ###

1.  创建一个父工程引入相关boot，cloud，alibaba依赖

<properties>
            <java.version>1.8</java.version>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            
            <spring.boot.version>2.3.4.RELEASE</spring.boot.version>
            <spring.cloud.version>Hoxton.SR8</spring.cloud.version>
            <spring.platform.version>Cairo-SR8</spring.platform.version>
            <spring.cloud.alibaba.version>2.2.2.RELEASE</spring.cloud.alibaba.version>
        </properties>
            <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>${spring.cloud.alibaba.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>${spring.boot.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring.cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>

1.  子项目添加pom

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

1.  创建一个测试类  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70_pic_center]
2.  YML加入sentinel配置

server:
      port: 10000
    spring:
      application:
        name: pearl-test-sentinel
      cloud:
        sentinel:
          transport:
            port: 8719
            dashboard: localhost:8080

1.  启动项目，并访问测试接口，之后查看控制台  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70_pic_center 1]

### 简单流控规则示例 ###

1.  找到测试接口  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70_pic_center 2]
2.  添加控制规则，此规则表示当前QPS限制为1![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70_pic_center 3]
3.  快速刷新当前页面，发现已被限流  
    ![在这里插入图片描述][20201017114226266.png_pic_center]

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[20201017114226266.png_pic_center]: https://img-blog.csdnimg.cn/20201017114226266.png#pic_center