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fangjian0423
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[Sentinel](https://github.com/alibaba/Sentinel) 是阿里巴巴开源的分布式系统的流量防卫组件，Sentinel 把流量作为切入点，从流量控制，熔断降级，系统负载保护等多个维度保护服务的稳定性。
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[Dubbo](http://dubbo.apache.org/)是一款高性能Java RPC框架，有对应的[SpringBoot工程](https://github.com/apache/incubator-dubbo-spring-boot-project)。
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[Dubbo](http://dubbo.apache.org/)是一款高性能Java RPC框架，有对应的[SpringBoot工程](https://github.com/apache/dubbo-spring-boot-project)。
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本项目专注于Sentinel与Dubbo的整合，关于Sentinel的更多特性可以查看[sentinel-core-example](https://github.com/spring-cloud-incubator/spring-cloud-alibaba/tree/master/spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example)。
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本项目专注于Sentinel与Dubbo的整合，关于Sentinel的更多特性可以查看[sentinel-core-example](https://github.com/alibaba/spring-cloud-alibaba/tree/master/spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example)。
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## 示例
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1. 首先，修改 pom.xml 文件，引入 Sentinel starter 和 Dubbo starter。
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
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</dependency>
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@@ -112,7 +112,7 @@ Consumer端在服务调用之前，先定义限流规则。
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根据Provider端中发布的定义，使用Dubbo的@Reference注解注入服务对应的Bean：
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@Reference(version = "${foo.service.version}", application = "${dubbo.application.id}",
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url = "dubbo://localhost:12345", timeout = 30000)
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path = "dubbo://localhost:12345", timeout = 30000)
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private FooService fooService;
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由于设置的qps是10。调用15次查看是否被限流：
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@@ -146,4 +146,3 @@ Consumer端：
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1. IDE直接启动：找到主类 `SentinelDubboConsumerApp`，执行 main 方法启动应用。
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2. 打包编译后启动：首先执行 `mvn clean package` 将工程编译打包，然后执行 `java -jar sentinel-dubbo-consumer-example.jar`启动应用。
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# Sentinel Provider Example
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# Sentinel Dubbo Example
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## Project Instruction
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This example illustrates how to use Sentinel starter to implement flow control for Spring Cloud applications.
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@@ -7,7 +7,7 @@ This example illustrates how to use Sentinel starter to implement flow control f
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[Dubbo](http://dubbo.apache.org/) is a high-performance, java based open source RPC framework.
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This example focus on the integration of Sentinel and Dubbo. You can see more features on [sentinel-core-example](https://github.com/spring-cloud-incubator/spring-cloud-alibaba/tree/master/spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example).
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This example focus on the integration of Sentinel and Dubbo. You can see more features on [sentinel-core-example](https://github.com/alibaba/spring-cloud-alibaba/tree/master/spring-cloud-alibaba-examples/sentinel-example/sentinel-core-example).
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## Demo
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@@ -18,7 +18,7 @@ Before we start the demo, let's learn how to connect Sentinel with Dubbo to a Sp
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1. Add dependency spring-cloud-starter-alibaba-sentinel and dubbo-spring-boot-starter in the pom.xml file in your Spring Cloud project.
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
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</dependency>
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@@ -110,7 +110,7 @@ Configure rules:
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Using the `@Reference` annotation to inject service:
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@Reference(version = "${foo.service.version}", application = "${dubbo.application.id}",
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url = "dubbo://localhost:12345", timeout = 30000)
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path = "dubbo://localhost:12345", timeout = 30000)
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private FooService fooService;
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Because QPS is 10, we can see that flow control takes effect in this invocation:
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@@ -143,4 +143,3 @@ Consumer side:
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1. Start in IDE: Find main class `SentinelDubboConsumerApp`, and execute the main method.
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2. Build a fatjar: Execute command `mvn clean package` to build a fatjar, and run command `java -jar sentinel-dubbo-consumer-example.jar` to start the application.
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@@ -25,6 +25,7 @@
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<dependency>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>sentinel-dubbo-api</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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@@ -2,16 +2,16 @@ package com.alibaba.cloud.examples;
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import java.util.Collections;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.boot.builder.SpringApplicationBuilder;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Bean;
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import com.alibaba.csp.sentinel.slots.block.RuleConstant;
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import com.alibaba.csp.sentinel.slots.block.SentinelRpcException;
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import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
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import com.alibaba.csp.sentinel.slots.block.flow.FlowRuleManager;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.boot.builder.SpringApplicationBuilder;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Bean;
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/**
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* @author fangjian
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*/
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@@ -26,7 +26,8 @@ public class SentinelDubboConsumerApp {
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public static void main(String[] args) {
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FlowRule flowRule = new FlowRule();
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flowRule.setResource("com.alibaba.cloud.examples.FooService:hello(java.lang.String)");
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flowRule.setResource(
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"com.alibaba.cloud.examples.FooService:hello(java.lang.String)");
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flowRule.setCount(10);
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flowRule.setGrade(RuleConstant.FLOW_GRADE_QPS);
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flowRule.setLimitApp("default");
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@@ -25,6 +25,7 @@
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<dependency>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>sentinel-dubbo-api</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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